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20080868 Ver 2_2020_Sweep_Tables_I-1_thru_I-32_20210701
Table I-1. Raw data from benthic sweep samples collected in May 2020 at each station in all 15 creeks in the PCS study. Benthic organisms were not counted beyond 100 individuals in any sample. Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up I Down Annelida Clitellata Enchytraeidae sp. Naididae Naididae sp. Naididae sp. w/ hair Naididae sp. w/o hair Limnodrilus hoffineisteri Paranais litoralis Tubificoides heterochaetus Rhynchobdellida Piscicolidae Myzobdella lugubris Polychaeta Ampharetidae Amphicteis floridus Capitellidae Heteromastus filiformis Mediomastus ambiseta Nereididae Laeonereis culveri Neanthes succinea Phyllodocidae Eteone heteropoda Spionidae Polydora cornuta Streblospio benedicti - - - - 24 - 8 1 5 - 8 9 3 2 - - 8 - 20 - - - 1 - 2 - 35 17 3 1 - - - - - 2 - - - - - - - - - - - - - - - - - - - 2 - - - - - - - - - - - - 3 5 - - - - - - - - - - - - - - - - - - - - 130 100 207 - 6 - 49 4 - - 1 - 2 5 - - 1 1 4 3 - 7 - 1 7 2 12 7 2 - 21 11 3 - - - 20 - - - - - - - - - - - - - - - - - - 2 4 - 4 - - - - - - 3 - - - - - - - - - - - - 1 - - - - 3 - - - 1 1 2 - - - - - 2 - 6 - - - 3 - - - - - - - - 27 - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - 2 3 - - - - - - - 3 - 53 - 108 146 4 8 23 - - 11 41 11 5 2 - 2 - 126 1 1 - 98 2 63 48 4 19 31 3 - - - - - - - - - - - - - - - - 2 - - - 12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 - - - - - - - - - 1 6 - 1 3 - 3 - - - 3 1 - - - 10 - 1 1 - - - - - - - 3 - - - - - - - - - - - - - - - - - - - - - - 4 1 - - - - - - - - - - - - 2 2 - 13 - 5 - 6 - 9 - - 29 1 - 3 4 1 - 1 5 8 13 5 - - - - - - 2 32 - 37 - 1 2 4 1 - - - 4 2 18 9 4 3 9 105 - 2 4 43 - - 1 2 - 6 3 - 1 3 - - - 2 - - - - 4 - - 1 23 - 6 - - 2 - - 2 - Arthropoda Arachnida Acari sp. Insecta Coleoptera Hydrophilidae Berosus sp. Tropisternus lateralis nimbatus Haliplidae Peltodytes sp. Psephenidae Ectopria nervosa Noteridae Hydrocanthus oblongus Diptera Ceratopogonidae Atrichopogon sp. Bezzia/Palpomyia complex Dasyhelea sp. Chironomidae Apedilum sp. Chironomus decorus Chrysops sp. Clinotanypus sp. Cricotopus sp. Dicrotendipes nervosus Goeldichironomus devineyae - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - 1 - - - - 6 - - - 5 - - - 19 - - - 1 - 8 - - - 19 - 28 50 165 36 27 - 1 1 - - - - - - - - - - - - - - - - - - - - - - - - 6 - - - 22 - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - 3 - - - - - - - - - - - - - - - 3 - 2 - 3 - - - 3 - - - - - - - 4 - 3 - 2 - 3 - 3 6 3 - 3 - - - - - - - - - 3 - - - - - - - - - - - - - - - - 2 - - - - - - - - - - - 1 24 8 3 12 - - - - 2 - 11 7 - - - - - - - - - - - 6 - 1 60 15 3 129 3 3 1 1 1 4 - - 15 - 17 26 - - 37 2 - 10 3 25 5 3 - 1 - - - - - - 2 - - - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - 2 - - - - 1 - 8 - 73 2 9 2 37 - 1 1 1 - - - 1 5 - 3 - - - 4 8 27 76 2 5 1 15 1 - - - 14 37 - 5 49 9 67 43 34 103 9 - 53 - 92 25 - - - 13 92 182 64 105 - 5 I-1 Table I-1. (continued). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up I Down Glyptotendipes sp. Kiefferulus sp. Orthocladiinae sp. Parachironomus sp. Polypedilum sp. Tanypus neopunctipennis Tanytarsus sp. Tribelos jucundus Curculionidae sp. Dolichopodidae Dolichopodidae sp. Ephydridae sp. Tabanidae Tabanus sp. Stratiomyidae sp. Euchelicerata Trombidiformes sp. Hemiptera Belostomatidae Abedus/Belostoma sp. Belostoma flumineum Belostoma lutarium Collembola Corixidae Corixidae sp. Sigara sp. Trichocorixa calve Trichocorixa kanza Trichocorixa louisianae Trichocorixa sexcinta Gerridae Trepobates inermis Naucoridae Pelocoris femoratus Sminthuridae sp. Pleidae Neoplea striola Poduridae sp. Veliidae Steinovelia stagnalis Odonata Coenagrionidae Enallagma sp. Ischnurasp. Libellulidae Libellula sp. Perithemis tenera Mesoveliinae Mesovelia mulsanti Nepidae Ranatra nigra - - - - - - 1 - - - - - - - - - - - - - 9 1 - - - - - - - - 2 - - - - - - - 1 - - - - - 1 - - - - - - - - - - - 2 - - - - - - - - - - - 19 1 8 - - - - - - - - 2 - - - - - - 2 1 - 1 1 - - - - - - - - - - - - - - - - - - 2 - - - - - - - - - - - - - 12 - 27 - 5 - - - - - - - - - - - - - - - - - - - - - - - 2 16 - 19 10 19 9 131 4 - - - - - - - 5 - - 4 - - 51 - 127 300 17 22 21 2 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - 1 3 - - - - - - - - - - - - 1 - - - - - - - - - - - 1 - - 2 6 1 - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - 1 2 - - - - - - - - - - - - 3 - - - - - - 2 - - - - - - 1 - - - - - - - - - - - - - - - - - - - 6 - 2 - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - 3 2 3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 1 - - - - - - - - - 1 - - - - 1 - - - - - - - - - - - - - - - 10 - 6 - 104 - - 2 100 23 234 241 110 147 8 - 12 - 41 42 - - 3 1 - 4 - - 4 - - - - - - - - - - - 2 1 - 1 - - - - - - - - - - - - - - - - - - 6 - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 3 - - - 1 - - - 1 - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - 1 1 - - - - 1 2 - - - - - - - - - - - - 1 - 12 - - 1 46 11 96 88 36 89 2 1 5 1 3 9 - - - - - - - - 1 - 4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 2 - - - - 1 - - - - - - - - - - - - - - - - - - - 13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - 1 - - - - - - 2 - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - - - 1 - - 2 1 3 2 - - - 1 - - 2 - - - - - 2 - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - 1 - - - - - - - - 2 - - - - 1 - - - - - - - - - - - - 1 - - - - - 3 - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - 1 - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - 3 - - 4 1 - 1-2 Table I-1. (continued). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up I Down Malacostraca Amphipoda Corophiidae Apocorophium lacustre Apocorophium louisianum Apocorophium sp. Gammaridae Gammarus mucronatus Gammarustigrinus Haustoriidae sp. Lepidactylus dytiscus Oedicerotidae Ameroculodescomplex Talitridae Orchestia uhleri Decapoda Palaemonidae Palaemonetes pugio Panopeidae Rhithropanopeus harrisii Portunidae Callinectes sapidus Isopoda Anthuridae Cyathura polita Bopyroidea Probopyrus pandalicola Idoteidae Edotia montosa Erichsonella filiformis Ligiidae Ligia exotica Sphaeromatidae Cassidinidea lunifrons Mysida Mysidae Americamysis almyra Ostracoda Candonidae Candonidae sp. Cytherideidae Cyprideis littoralis Tanaidacea Leptocheliidae Hageriarapax Maxillopoda Sessila Balanidae Balanus subalbidus Balanus improvisus - 1 - 2 - 9 - 18 - 2 1 1 - - - - - - - 1 - 8 - - 84 106 - - 1 46 - - - - 94 51 - 54 5 9 48 48 36 10 2 6 26 4 199 14 5 1 202 40 48 - 105 174 - - - - - 22 300 300 - 288 132 125 259 200 225 35 32 45 267 49 258 66 4 5 300 232 300 230 300 300 4 290 - - - - - 35 - 18 6 150 - - - - 5 126 98 5 6 17 - 23 - 3 - - - - - - 300 300 300 300 300 255 300 244 88 139 142 201 76 84 76 181 100 69 300 276 5 270 300 252 300 284 30 286 211 177 - - - - - - - - - - - - - - - 7 - - - - - 30 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - 1 - - - - 15 11 - 9 8 3 32 1 - - 25 4 - - - - - - 3 - - - - - - 2 8 27 - 17 3 4 4 2 1 4 1 6 3 6 8 4 228 135 27 6 - - 1 39 - 93 - 4 - 6 6 4 - 7 - 1 - - - 1 - - - - - 1 - 1 - 1 - - - - - 1 - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - 2 - 2 - 4 - 2 - 2 - 1 - 1 1 - 1 1 - 1 - 5 2 2 - 2 - - - - - - - - - - - 2 - - - - - - - - - - - - - - - - - - - 2 - - - - - - - - 2 3 1 1 - - - 1 32 6 - 5 - 4 - 2 - - - 1 - - - - - - - - - - - - - - - 1 1 17 - 1 - 1 - - - - - - - - - - - - - - - - - - - - - - - 1 - - - 2 - - - - - - - - - - - - - 5 6 13 10 2 11 1 16 21 78 59 32 21 5 - 28 3 29 5 - - 17 - 17 30 28 17 16 1 3 82 13 227 - - 73 1 - - - - - - - 5 5 5 108 - - - - - - - - - 1 - - - - - 14 - - - - - 1 - - - - - - - - - - - - - 2 - - 3 - - 122 204 300 203 214 2 300 47 2 3 6 4 3 27 11 17 1 8 1 184 18 244 226 38 15 300 6 - - - - - 211 - 4 - 193 - 34 10 205 - 40 27 90 - 3 - 1 - 197 - - 3 218 - - - - - - - - - 6 - - - - - - - 2 - 1 - - - - - 4 - 2 - - - - - - - - - - - - - 5 - - - - - 61 - 1 - - - 3 - - - - - - - - 1-3 Table I-1. (concluded). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Mollusca Bivalvia Cyrenoididae Cyrenoida floridana Dreissenidae Mytilopsis leucophaeata Mactridae Mulinia lateralis Rangia cuneata Mytilidae Geukensia demissa Tellinidae Macoma tents Gastropoda Archaeopulmonata Ellobiidae Detracia floridana Basommatophora Physidae sp. (physalphysella) Hydrobiidae Littoridinops tenuipes Littorinadae Littorina irrorata Nudibranchia sp. Platyhelminthes sp. 3 3 2 2 1 - - - - 6 - - - - - - - 11 - 1 - - - 9 1 - - 6 - - 4 - - - - 169 6 4 - - - 29 1 - 2 - - 1 - 1 - - - 6 1 - - 3 - 6 2 4 2 2 - - - - - - - - - - - - - - 2 - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - 4 - - - - - - - - - - - - - 1 - - - - - - - 1 2 - - 4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - 10 - - - 2 6 - - - - - - - - - - 1 - 52- - - - - - - - - - - - - - - - - - - - - - - - - - - 38 12 23 8 268 300 62 300 193 150 300 300 225 230 53 28 300 73 182 242 9 - 300 160 300 300 300 300 300 141 - - - - - - - - - 1 - - - 1 - - - - - - - - - - - - - - - - - - - - - - - 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - 8 - - - - - - 1 - - - - - - - - 1 - 38 - - - - - - Total taxa 16 17 20 18 27 23 15 32 24 30 19 26 22 24 21 17 28 18 34 29 18 22 21 21 25 28 26 25 22 22 — = Species not collected at station 1-4 Table 1-2. Taxa collected in May 2020 from each benthic sweep sample station in all 15 creeks in the PCS study. Taxa for which EBI was calculated are shown with a * and other taxa are shown with a V. Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) control Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek control ( ) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Annelida Clitellata Enchytraeidae sp. - - - - * - * * * - * * * * - - * - * - - - * - * - * * * * Naididae Naididae sp. - - - - - * - - - - - - - - - - - - - - - - - - - * - - - - Naididae sp. w/ hair - - - - - - - - * * - - - - - - - - - - - - - - - - - - - - Naididae sp. w/o hair * * * - * - * * - - * - * * - - * * * * - * - * * * * * * - Limnodrilus hoffmeisteri * * * - - - * - - - - - - - - - - - - - - - - - - * * - * - Paranais litoralis - - - - - * - - - - - - - - - - - - * - - - - * - - - * * * Tubificoides heterochaetus - - - - - * - * - - - * - - - - - - - - * - - - - - - - - - Rhynchobdellida Piscicolidae Myzobdella lugubris - - - - - - - - - - - - - - - - - - - - V V - - - - - - - - Polychaeta Ampharetidae Amphicteis fioridus - * - * * * * * - - * * * * * - * - * * * - * * * * * * * * Capitellidae Heteromastus filiformis - - - - - - - - - - - - - - - - * - - - * - - - - - - - - - Mediomastus ambiseta - - - - - - - - - - - - - - - - - - - - * - - - - - - - - - Nereididae Laeonereis culvert * * - * * - - * - - - * * - - - * - * * - - - - - - - * - - Neanthes succinea - - - - - - - - - - - - - - - - - - - - * * - - - - - - - - Phyllodocidae Eteone heteropoda - - - - * * - * - * - * - * - - * * - * * * - * * * * * - - Spionidae Polydora cornuta - - - - * * - * - * * * * - - - * * * * * * * * - * * * - - Streblospio benedicti * * - * * - * * - - - * - - - - * - - * * - * - - * - - * - Arthropoda Arachnida Acari sp. - - - - - - - - - - - V - - - - - - - - - - - - - - - - - - Insecta Coleoptera Hydrophilidae Berosus sp. - - - - * - - - * - - - * - - - * - * - - - * - * * * * * - Tropisternus lateralis nimbatus _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ V V Haliplidae Peltodytes sp. - - - - - - - - - - - - - - - - - - - - - - - - * - - - * - Psephenidae Ectopria nervosa - - - - - - - - - - - - - - V - - - - - - - - - - - - - - - Noteridae Hydrocanthus oblongus - - - - - - - - - - - - - - - - - - - - - - - - - - V - - - Diptera Ceratopogonidae Atrichopogon sp. - - - - - - - - - - - - - - * - - - - - - - - - - - - - - Bezzia/Palpomyia complex * - * - * - - - * - - - - - - - * - * - * - * - * * * - * - Dasyhelea sp. - - - - - - - - V - - - - - - - - - - - - - - - - V - - - - Chironomidae Apedilum sp. - - - - - - - * * * * * - - - - * - * * - - - - - - - - - - Chironomus decorus - * - * * * * * * * * * * * - - * - * * - - * * - * * * * * Chrysops sp. - - - - - - - - - - - - - - - - - - * - - - - - - * - - - - Clinotanypus sp. - - * - - - - - - - - - - - - - - - - - - - - - - - - - - - Cricotopus sp. - - - - - - - - - - - - - - - - - - * - - - - - * - - - - * Dicrotendipes nervosus - * - * * * * * - - * * - - - * * - * - - - * * * * * * * * Goeldichironomus devineyae * - - - * * - * * * * * * * * - * - * * - - - * * * * * - * I-5 Table 1-2 (continued). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Glyptotendipes sp. - - - - - - * - - - - - - - - - - - - - * * - - - - - - - - Kiefferulus sp. - V - - - - - - - - - - - - - - - - - - - - - - - - - - - - Orthocladiinae sp. - - - - - - - V - - - - - V - - - - - - - - - - - V - - - - Parachironomus sp. - - - - - - - * * * - - - - - - - - * - - - - - - * * - * * Polypedilum sp. - - - - - - - - - - - - - - - - - - * - - - - - - - - - - - Tanypus neopunctipennis - - * - * - * - - - - - - - - - - - - - - - - - - - - - - - Tanytarsus sp. * * - * * * * * * - - - - - - - * - - * - - * - * * * * * * Tribelos jucundus V - - - - - - - - - V - - V V - - - - - - - - - - - - V - - Curculionidae sp. - - - - - - - - - - V - V V - - - - - - - - - - - - V - - Dolichopodidae Dolichopodidae sp. - - - - - - - - - * - - * * * - - - * - - - - - - - - - - - Ephydridae sp. V Tabanidae Tabanussp. - - - - - - - - - - - - - - - - - - - - - - - - - - * - - - Stratiomyidae sp. - - - - - - - - - - - - - - - - - - - - V - - - - - - - - - Euchelicerata Trombidiformes sp. V V V V Hemiptera Belostomatidae AbedusBelostoma sp. - - * - - - - - - - - - - - - - - - - - - - * - * - - - - - Belostoma flumineum - - - - - - - - - V - - - - - - - - - - - - - - V V V - - - Belostoma lutarium - - - - - - - - - - - - - - - - - - - - - - - - - - - - V V Collembola - - - - - - - - - V - - - - V - - - - - - - - - - - - - - - Corixidae Corixidae sp. * - * - * - - * * * * * * * * - * - * * - - * * - * - - * - Sigara sp. - - - - - - - - - - * * - * - - - - - - - - - - - - - - - - Trichocorixa calve - - V - - - - - - - - - - - - - - - - - - - - - - - - - - - Trichocorixa kanza V V - - - V - - - V - - - - - - - - - - - - - - - - - - - - Trichocorixa louisianae - - V - - - - - - - - - V V - - - - V V - - - - - - - - - - Trichocorixa sexcintca - - - - * - - * * * * * * * * * * * * * - - - - - - - - * - Gerridae Trepobates inermis V - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Naucoridae Pelocoris femoratus - - * - - - - - - - - - - - - - - - - - - - - - - - - - - - Sminthuridae sp. - - - V V - - - - V - - - - - - - - - - - - - - - - - - - V Pleidae Neoplea striola - - - - - - - - - - - - - - - - - - - - - - - - - - - - - V Poduridae sp. V V Veliidae Steinovelia stagnalis - - - - - - - - - - - - - - V - - - - - - - - - - - - - - - Odonata Coenagrionidae Enallagma sp. - - - - - * - - * * * * - - - * - - * - - - - - - - - - - - lschnura sp. - - - - - - - - - - - - - - - - V - - - - - - - - - - - - - Libellulidae Libellula sp. - - - - - - - - * - - - - * - - - - - - - - - - - - * - - - Perithemis tenera - - V - - - - - - - - - - - - - - - - - - - V - - - - - - - Mesoveliinae Mesovelia mulsanti - - V - - - - V - - - - - - - - - - - - - - - - - - - - - - Nepidae Ranatra nigra - - - - - - - - - - - - - - - - - - - - - - * - * - - * * - 1-6 Table 1-2 (continued). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Malacostraca Amphipoda Corophiidae Apocorophium lacustre - * - * - * - * - * * * - - - - - - - * - * - - * * - - * * Apocorophium louisianum - - - - * * - * * * * * * * * * * * * * * * * * * - * * - - Apocorophium sp. - - - * * * - * * * * * * * * * * * * * * * * * * * * * * * Gammaridae Gammarus mucronatus - - - - - * - * * * - - - - * * * * * * - * - * - - - - - - Gammarus tigrinus * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Haustoriidae Lepidactylus dytiscus - - - - - - - - - - - - - - - * - - - - - * - - - - - - - - Oedicerotidae Ameroculodes complex - - - - - - - - - - - - - - - - - - - - - * - - - - - - - - Talitridae Orchestia uhleri - - - * - - - - * * - * * * * * - - * * - - - - - - * - - - Decapoda Palaemonidae Palaemonetes pugio - - - * * * - * * * * * * * * * * * * * * * * * - - * * - * Panopeidae Rhithropanopeus harrisii - * - * * * - * - * - - - * - - - - - * - * - * - - - - - * Portunidae Callinectes sapidus - - - - - - - - - - - - - - - - - - - - * - - - - - - - - Isopoda Anthuridae Cyathura polita - - - * - * - * - * - * - * - * * - * * - * - * * * - * - - Bopyroidea Probopyrus pandalicola - - - - - V - - - - - - - - - - - - - - - - - - - - - - - V Idoteidae Edotia montosa - - - - - - - - * * * * - - - * * * - * - * - * - - - * - - Erichsonella filiformis - - - - - - - - - - - - - V V V - V - V - - - - - - - - - - Ligiidae Ligia exotica- Sphaeromatidae Cassidinidea lunifinns - * * * * * * * * * * * * * * - * * * * - - * - * * * * * * Mysida Mysidae Americamysis almyra * * * * - - * * - - - - - - - * * * * - - - - - - - - - * - Ostracoda Candonidae Candonidae sp. - - - - V - - - - - V - - - - - - - - - - - - - V - - V - - Cytherideidae Cyprideis littoralis V V V V V V V V V V V V V V V V V V V V V V V V V V V Tanaidacea Leptocheliidae Hargeria rapax - - - - - * - * - - - * * * - * * * - * - * - * - - * * - - Maxillopoda Sessila Balanidae Balanus subalbidus - - - - - - - * - - - - - - - * - * - - - - - * - * - - - - Balanus improvisus - - - - - - - - - * - - - - - * - * - - - * - - - - - - - - I-7 Table 1-2 (concluded). Taxonomic hierarchy Broomfield Creek SCUT1 (control) Jacks Creek Little Creek (control) Jacobs Creek PA2 (control) Drinkwater Creek Long Creek (control) Tooley Creek Muddy Creek (control) Huddles Cut Porter Creek DCUT11 DCUT19 (control) Duck Creek (control) Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Up Down Mollusca Bivalvia Cyrenoididae Cyrenoida floridana - - - - V - - - - - - - V - V - - - V V - - V - - V - - - - Dreissenidae Mytilopsis leucophaeata * * * - - - * * - * - - * - * - - - * * - - * - * * * * * - Mactridae Mulinia lateralis - - - - - - - - - - - * - - - - - - - - - - - - - - - - Rangia cuneata - - - - - - - * - - - - - - - - - - - - - - - * - - - - Mytilidae Geukensia demissa - - - - - - - - - * - - - - - - - * * - - * - - - - - - - - Tellinidae Ma coma tenta - - - - - - - - - - - - - - - - - - - - * - - - - - - - - - Gastropoda Archaeopulmonata Ellobiidae Detracia floridana - - - - - - - - - - - - - - V - - - V V - - - - - - - - - - Basommatophora Physidae sp. (physalphysella) V - V - - - - - - - - - - - - - - - - - - - - - - - - - - - Hydrobiidae Littoridinops tenuipes * * * * * * * * * * * * * * * * * * * * * - * * * * * * * * Littorinadae Littorina irrorata - - - - - - - - - * - - - * - - - - - - - - - - - - - - - - Nudibranchia sp. - - - - - - - V - - - - - - - - - - - - - - - - - - - - - - Platyhelminthes sp. - - - - - V - - - - - - V - - - - - - - - V - V - - - - - - Total taxa 17 17 19 18 26 21 15 32 23 32 20 26 23 27 20 17 28 18 36 29 18 21 21 21 24 28 27 26 22 22 — = Species not collected at station 1-8 Table 1-3. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Broomfield Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/o hair 130 1.0 100 100.0 Limnodrilus hoffineisteri 21 1.0 10 10.0 Polychaeta Laeonereis culveri 1 1.0 1 1.0 Streblospio benedicti 1 1.1 1 1.1 Arthropoda Insecta Diptera Bezzia/Palmonyia complex 3 2.3 3 6.9 Goeldichironomus devineyae 1 2.0 1 2.0 Tanytarsus sp. 2 2.3 1 2.3 Hemiptera Corixidae sp. 10 1.3 10 13.0 Malacostraca Amphipoda Gammarus tigrinus 300 2.0 100 200.0 Mysida Americamysis almyra 3 2.2 3 6.6 Mollusca Bivalvia Veneroida Mytilopsis leucophaeta 169 1.5 100 150.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 38 2.0 30 60.0 Total 360 452.9 Estuarine Biotic Index = 1.54 Total taxa = 16 Total taxa with sensitivity values = 11 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-9 Table 1-4. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Broomfield Creek downstream station in May of 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/o hair 100 1.0 100 100.0 Limnodrilus hoffmeisteri 11 1.0 10 10.0 Polychaeta Amphicteis floridus 53 2.0 30 60.0 Laeonereis culveri 6 1.0 3 3.0 Streblospio benedicti 2 1.1 1 1.1 Arthropoda I nsecta Diptera Chironomus decorous 6 1.0 3 3.0 Dicrotendipes nervosus 8 1.0 3 3.0 Tanytarsus sp. 16 2.3 10 23.0 Malacostraca Amphipoda Apocorophium lacustre 1 2.2 1 2.2 Gammarus tigrinus 300 2.0 100 200.0 Decapoda Rhithropanopeus harrisii 4 2.5 3 7.5 Isopoda Cassidinidea lunifrons 5 2.0 3 6.0 Mysida Americamysis almyra 82 2.2 30 66.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeta 6 1.5 3 4.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 12 2.0 10 20.0 Total 310 509.3 Estuarine Biotic Index = 1.58 Total taxa = 17 Total taxa with sensitivity values = 14 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-10 Table 1-5. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the SCUT1 upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/o hair 207 1.0 100 100.0 Limnodrilus hoffmeisteri 3 1.0 3 3.0 Arthropoda Insecta Diptera Bezzia/Palmonyia complex 2 2.3 1 2.3 Clinotanypus sp. 1 1.4 1 1.4 Tanypus neopunctipennis 12 1.0 10 10.0 Hemiptera Abedus/Belostoma 1 1.0 1 1.0 Corixidae sp. 6 1.3 3 3.9 Pelocoris femoratus 1 2.3 1 2.3 Trichocorixa sexcinta 1 1.0 1 1.0 Malacostraca Amphipoda Gammarus tigrinus 300 2.0 100 200.0 Isopoda Cassidinidea lunifrons 6 2.0 3 6.0 Mysida Americamysis almyra 13 2.2 10 22.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeta 4 1.5 3 4.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 23 2.0 10 20.0 Total 247 377.4 Estuarine Biotic Index = 1.53 Total taxa = 20 Total taxa with sensitivity values = 12 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. Table 1-6. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the SCUT1 downstream station in May of 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Polychaeta Amphicteis floridus 108 2.0 100 200.0 Laeonereis culveri 1 1.0 1 1.0 Streblospio benedicti 6 1.1 3 3.3 Arthropoda I nsecta Diptera Chironomus decorous 1 1.0 1 1.0 Dicrotendipes nervosus 73 1.0 30 30.0 Tanytarsus sp. 19 2.3 10 23.0 Malacostraca Amphipoda Apocorophium lacustre 2 2.2 1 2.2 Apocorophium sp. 22 2.2 10 22.0 Gammarus tigrinus 300 2.0 100 200.0 Orchestia uhleri 1 2.0 1 2.0 Decapoda Palaemonetes pugio 2 2.5 1 2.5 Rhithropanopeus harrisii 6 2.5 3 7.5 Isopoda Cassidinidea lunifrons 13 2.0 10 20.0 Cyathura polita 2 2.0 1 2.0 Mysida Americamysis almyra 227 2.2 100 220.0 Mollusca Gastropoda Veneroida Littoridinops tenuipes 8 2.0 3 6.0 Total 375 742.5 Estuarine Biotic Index = 1.98 Total taxa = 18 Total taxa with sensitivity values = 15 'Only those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-12 Table 1-7. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacks Creek upstream station in Ma 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 24 1.0 10 10.0 Naididae sp. w/o hair 6 1.0 3 3.0 Polychaeta Amphicteis floridus 146 2.0 100 200.0 Eteone heteropoda 2 1.6 1 1.6 Laeonereis culveri 3 1.0 1 1.0 Polydora cornuta 2 1.2 1 1.2 Streblospio benedicti 3 1.1 3 3.3 Arthropoda I nsecta Coleoptera Berosus sp. 6 1.5 3 4.5 Di pte ra Bezzia/Palmonyia complex 3 2.3 3 6.9 Chironomus decorus 60 1.0 30 30.0 Dicrotendipes nervosus 2 1.0 1 1.0 Goeldichironomus devineyae 14 2.0 10 20.0 Tanypus neopunctipennis 27 1.0 10 10.0 Tanytarsus sp. 10 2.3 10 23.0 Hemiptera Corixidae sp. 104 1.3 100 130.0 Trichocorixa sexcincta 12 1.0 10 10.0 Malacostraca Amphipoda Apocorophium louisianum 94 2.2 30 66.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 300 2.0 100 200.0 Decapoda Palaemonetes pugio 8 2.5 3 7.5 Rhithropanopeus harrisii 6 2.5 3 7.5 Isopoda Cassidinidea lunifrons 10 2.0 10 20.0 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 268 2.0 100 200.0 Total 642 1,176.5 Estuarine Biotic Index = 1.83 Total taxa = 27 Total taxa with sensitivity values = 21 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-13 Table 1-8. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacks Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. 2 1.0 1 1.0 Paranais litoralis 3 1.1 3 3.3 Tubificoides heterochaetus 2 1.1 1 1.1 Polychaeta Amphecteis floridus 4 2.0 3 6.0 Eteone heteropoda 2 1.6 1 1.6 Polydora cornuta 32 1.2 30 36.0 Arthropoda Insecta Diptera Chironomus decorus 15 1.0 10 10.0 Dicrotendipes nervosus 9 1.0 3 3.0 Goeldichironomus devineyae 37 2.0 30 60.0 Tanytarsus sp. 19 2.3 10 23.0 Odonata Enallagma sp. 1 1.5 1 1.5 Malacostraca Amphipoda Apocophorium lacustre 9 2.2 3 6.6 Apocorophium louisianum 51 2.2 30 66.0 Apocophorium sp. 300 2.2 100 220.0 Gammarus mucronatus 35 2.3 30 69.0 Gammarus tigrinus 255 2.0 100 200.0 Decapoda Palaemonetes pugio 27 2.5 10 25.0 Rhithropanopeus harrisii 4 2.5 3 7.5 Isopoda Cassidinidea lunifrons 2 2.0 1 2.0 Cyathura polita 2 2.0 1 2.0 Tanaidacea Hargeria rapax 211 1.6 100 160.0 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 571 1,104.6 Estuarine Biotic Index = 1.93 Total taxa = 23 Total taxa with sensitivity values = 19 aOnly those taxa for which a sensitivity value is available are displayed. "Total number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-14 Table 1-9. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Little Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 8 1.0 3 3.0 Naididae sp. w/o hair 49 1.0 30 30.0 Limnodrilus hoffineisteri 20 1.0 10 10.0 Polychaeta Amphicteis floridus 8 2.0 3 6.0 Streblospio benedicti 1 1.1 1 1.1 Arthropoda I nsecta Diptera Chironomus decorus 3 1.0 3 3.0 Dicrotendipes nervosus 2 1.0 1 1.0 Glyptotendipes sp. 1 1.3 1 1.3 Tanypus neopunctipennis 5 1.0 3 3.0 Tanytarsus sp. 9 2.3 3 6.9 Malacostraca Amphipoda Gammarus tigrinus 300 2.0 100 200.0 Isopoda Cassidinidea lunifrons 11 2.0 10 20.0 Mysida Americamysis almyra 73 2.2 30 66.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 29 1.5 10 15.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 62 2.0 30 60.0 Total 238 426.3 Estuarine Biotic Index = 1.79 Total taxa = 15 Total taxa with sensitivity values = 14 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-15 Table 1-10. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Little Creek downstream station in May 2020. Species/taxona Number of individuals" Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 1 1.0 1 1.0 Naididae sp. w/o hair 4 1.0 3 3.0 Tubificoides heterochaetus 6 1.1 3 3.3 Polychaeta Amphicteis floridus 23 2.0 10 20.0 Eteone heteropoda 13 1.6 10 16.0 Laeonereis culveri 3 1.0 3 3.0 Polydora cornuta 37 1.2 30 36.0 Streblospio benedicti 3 1.1 3 3.3 Arthropoda Insecta Diptera Apedilum sp. 1 4.0 1 4.0 Chironomus decorus 129 1.0 100 100.0 Dicrotendipes nervosus 37 1.0 30 30.0 Goeldichironomus devineyae 5 2.0 3 6.0 Parachironomus sp. 19 1.1 10 11.0 Tanytarsus sp. 131 2.3 100 230.0 Hemiptera Corixidae sp. 2 1.3 1 1.3 Trichocorixa sexcinta 1 1.0 1 1.0 Malacostraca Apocorophium lacustre 18 2.2 10 22.0 Apocorophium louisianum 54 2.2 30 66.0 Apocorophium sp. 288 2.2 100 220.0 Gammarus mucronatus 18 2.3 10 23.0 Gammarus tigrinus 244 2.0 100 200.0 Decapoda Palaemonetes pugio 17 2.5 10 25.0 Rhithropanopeus harrisii 7 2.5 3 7.5 Isopoda Cassidinidea lunifrons 1 2.0 1 2.0 Cyathura polita 4 2.0 3 6.0 Mysida Americamysis almyra 1 2.2 1 2.2 Hargeria rapax 4 1.6 3 4.8 Maxillopoda Sessilia Balanus subalbidus 6 2.0 3 6.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 1 1.5 1 1.5 Rangia cuneata 1 1.0 1 1.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 685 1,255.9 Estuarine Biotic Index = 1.83 Total taxa = 32 Total taxa with sensitivity values = 28 aOnly those taxa for which a sensitivity value is available are displayed. "Total number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-16 Table I-11. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacobs Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 5 1.0 3 3.0 Naididae sp. w/ hair 3 1.0 3 3.0 Arthropoda Insecta Coleoptera Berosus sp. 5 1.5 3 4.5 Diptera Apedilum sp. 24 4.0 10 40.0 Bezzia/Palpomyia sp. 3 2.3 3 6.9 Chironomus decorus 3 1.0 3 3.0 Goeldichironomus devineyae 49 2.0 30 60.0 Parachironomus sp. 1 1.1 1 1.1 Tanytarsus sp. 4 2.3 3 6.9 Hemiptera sp. Corixidae sp. 100 1.3 100 130.0 Trichocorixa sexcinta 46 1.0 30 30.0 Odonata Enallagma sp. 2 1.5 1 1.5 Libellula sp. 2 1.1 1 1.1 Malacostraca Amphipoda Apocorophium louisianum 5 2.2 3 6.6 Apocorophium sp. 132 2.2 100 220.0 Gammarus mucronatus 6 2.3 3 6.9 Gammarus tigrinus 88 2.0 30 60.0 Orchestia uhleri 15 2.0 10 20.0 Decapoda Palaemonetes pugio 3 2.5 3 7.5 Isopoda Cassidinidea lunifrons 16 2.0 10 20.0 Edotia montosa 2 2.6 1 2.6 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 193 2.0 100 200.0 Total 451 834.6 Estuarine Biotic Index = 1.85 Total taxa = 24 Total taxa with sensitivity values = 20 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-17 Table 1-12. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacobs Creek downstream station in May 2020. Species/taxona Number of individuals" Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/ hair 5 1.0 3 3.0 Polychaeta Eteone heteropoda 5 1.6 3 4.8 Polydora cornuta 1 1.2 1 1.2 Arthropoda Insecta Diptera Apedilum sp. 8 4.0 3 12.0 Chironomus decorus 3 1.0 3 3.0 Dicrotendipes nervosus 1 1.0 1 1.0 Dolichopodidae sp. 1 1.0 1 1.0 Goeldichironomus devineyae 9 2.0 3 6.0 Parachironomus sp. 8 1.1 3 3.3 Hemiptera Corixidae sp. 23 1.3 10 13.0 Trichocorixa sexcinta 11 1.0 10 10.0 Odonata Enallagma sp. 1 1.5 1 1.5 Malacostraca Amphipoda Apocorophium lacustre 2 2.2 1 2.2 Apocorophium louisianum 9 2.2 3 6.6 Apocorophium sp. 125 2.2 100 220.0 Gammarus mucronatus 150 2.3 100 230.0 Gammarus tigrinus 139 2.0 100 200.0 Orchestra uhleri 11 2.0 10 20.0 Decapoda Palaemonetes pugio 4 2.5 3 7.5 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 21 2.0 10 20.0 Cyathura polita 2 2.0 1 2.0 Edotia montosa 3 2.6 3 7.8 Maxillopoda Sessilia Balanus improvisus 5 2.0 3 6.0 Tanaidacea Hargeria rapax 193 1.6 100 160.0 Mollusca Bivalvia Mytiloida Geukensia demissa 1 3.4 1 3.4 Veneroida Mytilopsis leucophaeata 2 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 150 2.0 100 200.0 Littorina irrorata 1 1.0 1 1.0 Total 580 1,150.3 Estuarine Biotic Index = 1.98 Total taxa = 30 Total taxa with sensitivity values = 27 'Only those taxa for which a sensitivity value is available are displayed. "Total number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-18 Table 1-13. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the PA2 Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 8 1.0 3 3.0 Naididae sp. w/o hair 1 1.0 1 1.0 Polychaeta Amphicteis floridus 11 2.0 10 20.0 Polydora cornuta 2 1.2 1 1.2 Arthropoda I nsecta Diptera Apedilum sp. 3 4.0 3 12.0 Chironomus decorus 1 1.0 1 1.0 Dicrotendipes nervosus 1 1.0 1 1.0 Goeldichironomus devineyae 67 2.0 30 60.0 He mi pte ra Corixidae sp. 234 1.3 100 130.0 Sigara sp. 2 1.4 1 1.4 Trichocorixa sexcinta 96 1.0 30 30.0 Odonata Enallagma sp. 3 1.5 3 4.5 Malacostraca Amphipoda Apocorophium lacustre 1 2.2 1 2.2 Apocorophium louisianum 48 2.2 30 66.0 Apocorophium sp. 259 2.2 100 220.0 Gammarus tigrinus 142 2.0 100 200.0 Decapoda Palaemonetes pugio 4 2.5 3 7.5 Isopoda Cassidinidea lunifrons 78 2.0 30 60.0 Edotia montosa 1 2.6 1 2.6 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 549 1,023.4 Estuarine Biotic Index = 1.86 Total taxa = 19 Total taxa with sensitivity values = 17 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-19 Table 1-14. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the PA2 Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 9 1.0 3 3.0 Tubificoides heterochaetus 3 1.1 3 3.3 Polychaeta Amphicteis floridus 41 2.0 30 60.0 Eteone heteropoda 6 1.6 3 4.8 Laeonereis culveri 3 1.0 3 3.0 Polydora cornuta 4 1.2 3 3.6 Streblospio benedicti 2 1.1 1 1.1 Arthropoda I nsecta Di pte ra Apedilum sp. 12 4.0 3 12.0 Chironomus decorus 1 1.0 1 1.0 Dicrotendipes nervosus 1 1.0 1 1.0 Goeldichironomus devineyae 43 2.0 30 60.0 Hemiptera Corixidae sp. 241 1.3 100 130.0 Sigara sp. 1 1.4 1 1.4 Trichocorixa sexcinta 88 1.0 30 30.0 Odonata Enallagma sp. 2 1.5 1 1.5 Malacostraca Amphipoda Apocorophium lacustre 1 2.2 1 2.2 Apocorophium louisianum 48 2.2 30 66.0 Apocorophium sp. 200 2.2 100 220.0 Gammarus tigrinus 201 2.0 100 200.0 Orchestia uhleri 9 2.0 3 6.0 Decapoda Palaemonetes pugio 2 2.5 1 2.5 Isopoda Cassidinidea lunifrons 59 2.0 30 60.0 Cyathura polita 2 2.0 1 2.0 Edotia montosa 1 2.6 1 2.6 Tanaidacea Hargeria rapax 34 1.6 30 48.0 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 610 1,125.0 Estuarine Biotic Index = 1.84 Total taxa = 26 Total taxa with sensitivity values = 23 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-20 Table 1-15. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Drinkwater Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 3 1.0 3 3.0 Naididae sp. w/o hair 2 1.0 1 1.0 Polychaeta Amphicteis floridus 11 2.0 10 20.0 Laeonereis culveri 1 1.0 1 1.0 Polydora cornuta 1 1.2 1 1.2 Arthropoda Insecta Coleoptera Berosus sp. 19 1.5 10 15.0 Diptera Chironomus decorus 1 1.0 1 1.0 Dolichopodidae sp. 2 1.0 1 1.0 Goeldichironomus devineyae 34 2.0 30 60.0 Hemiptera Corixidae sp. 110 1.3 100 130.0 Trichocorixa sexcinta 36 1.0 30 30.0 Malacostraca Amphipoda Apocorophium louisianum 36 2.2 30 66.0 Apocorophium sp. 225 2.2 100 220.0 Gammarus tigrinus 76 2.0 30 60.0 Orchestia uhleri 8 2.0 3 6.0 Decapoda Palaemonetes pugio 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 32 2.0 30 60.0 Tanaidacea Hargeria rapax 10 1.6 10 16.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 1 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 225 2.0 100 200.0 Total 493 895.2 Estuarine Biotic Index = 1.82 Total taxa = 22 Total taxa with sensitivity values = 18 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-21 Table 1-16. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Drinkwater Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (TV)° Abundance value (n) Product of (TV)(n) Annelida Clitellata Enchytraeidae sp. 2 1.0 1 1.0 Naididae sp. w/o hair 5 1.0 3 3.0 Polychaeta Amphicteis floridus 5 2.0 3 6.0 Eteone heteropoda 9 1.6 3 4.8 Arthropoda Insecta Diptera Chironomus decorus 4 1.0 3 3.0 Dolichopodidae sp. 6 1.0 3 3.0 Goeldichironomus devineyae 103 2.0 100 200.0 Hemiptera Corixidae sp. 147 1.3 100 130.0 Sigara sp. 1 1.4 1 1.4 Trichocorixa sexcinta 89 1.0 30 30.0 Odonata Libellula sp. 1 1.1 1 1.1 Malacostraca Amphipoda Apocophorium louisianum 10 2.2 10 22.0 Apocorophium sp. 35 2.2 30 66.0 Gammarus tigrinus 84 2.0 30 60.0 Orchestia uhleri 3 2.0 3 6.0 Decapoda Palaemonetes pugio 4 2.5 3 7.5 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 21 2.0 10 20.0 Cyathura polita 1 2.0 1 2.0 Ligia exotica 1 1.0 1 1.0 Tanaidacea Hargeria rapax 205 1.6 100 160.0 Mollusca Bivalvia Veneroida Mulinia lateralis 2 2.3 1 2.3 Gastropoda Neotaenioglossa Littoridinops tenuipes 230 2.0 100 200.0 Littorina irrorata 1 1.0 1 1.0 Total 539 933.6 Estuarine Biotic Index = 1.73 Total taxa = 24 Total taxa with sensitivity values = 21 a Only those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-22 Table 1-17. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Long Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Polychaeta Amphicteis floridus 2 2.0 1 2.0 Arthropoda I nsecta Diptera Atrichopogon sp. 3 2.3 3 6.9 Dolichopodidae sp. 1 1.0 1 1.0 Goeldichironomus devineyae 9 2.0 3 6.0 Hemiptera Corixidae sp. 8 1.3 3 3.9 Trichocorixa sexcinta 2 1.0 1 1.0 Malacostraca Amphipoda Apocorophium louisianum 2 2.2 1 2.2 Apocorophium sp. 32 2.2 30 66.0 Gammarus mucronatus 5 2.3 3 6.9 Gammarus tigrinus 76 2.0 30 60.0 Orchestia uhleri 32 2.0 30 60.0 Decapoda Palaemonetes pugio 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 5 2.0 3 6.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 1 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenupies 53 2.0 30 60.0 Total 141 285.9 Estuarine Biotic Index = 2.03 Total taxa = 21 Total taxa with sensitivity values = 13 'Only those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-23 Table 1-18. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Long Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Arthropoda I nsecta Diptera Dicrotendipes nervosus 1 1.0 1 1.0 He mi pte ra Trichocorixa sexcinta 1 1.0 1 1.0 Odonata Enallagma sp. 1 1.5 1 1.5 Malacostraca Amphipoda Apocorophium louisianum 6 2.2 3 6.6 Apocorophium sp. 45 2.2 30 66.0 Gammarus mucronatus 126 2.3 100 230.0 Gammarus tigrinus 181 2.0 100 200.0 Lepidactylus dytiscus 7 3.5 3 10.5 Orchestia uhleri 1 2.0 1 2.0 Decapoda Palaemonetes pugio 6 2.5 3 7.5 Isopoda Cyathura polita 1 2.0 1 2.0 Edotia montosa 1 2.6 1 2.6 Mysida Americamysis almyra 5 2.2 3 6.6 Tanaidacea Hargeria rapax 40 1.6 30 48.0 Maxillopoda Sessilia Balanus improvisus 61 2.0 30 60.0 Balanus subalbidus 2 2.0 1 2.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 28 2.0 10 20.0 Total 319 667.3 Estuarine Biotic Index = 2.09 Total taxa = 17 Total taxa with sensitivity values = 16 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-24 Table 1-19. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Tooley Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 8 1.0 3 3.0 Naididae sp. w/o hair 1 1.0 1 1.0 Polychaeta Amphicteis floridus 2 2.0 1 2.0 Eteone heteropoda 29 1.6 10 16.0 Heteromastus filiformis 2 1.1 1 1.1 Laeonereis culveri 10 1.0 10 10.0 Polydora cornuta 4 1.2 3 3.6 Streblospio benedicti 4 1.1 3 3.3 Arthropoda Insecta Coleoptera Berosus sp. 1 1.5 1 1.5 Diptera Apedilum sp. 2 4.0 1 4.0 Bezzia/Palpomyia sp. 4 2.3 3 6.9 Chironomus decorus 15 1.0 10 10.0 Dicrotendipes nervosus 5 1.0 3 3.0 Goeldichironomus devineyae 53 2.0 30 60.0 Tanytarsus sp. 5 2.3 3 6.9 Hemiptera Corixidae sp. 12 1.3 10 13.0 Trichocorixa sexcinta 5 1.0 3 3.0 Malacostraca Amphipoda Apocorophium louisianum 26 2.2 10 22.0 Apocorophium sp. 267 2.2 100 220.0 Gammarus mucronatus 98 2.3 30 69.0 Gammarus tigrinus 100 2.0 100 200.0 Decapoda Palaemonetes pugio 3 2.5 3 7.5 Isopoda Cassidinidea lunifrons 28 2.0 10 20.0 Cyathura polita 1 2.0 1 2.0 Edotia montosa 32 2.6 30 78.0 Mysida Americamysis almyra 5 2.2 3 6.6 Tanaidacea Hargeria rapax 27 1.6 10 16.0 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 493 989.4 Estuarine Biotic Index = 2.01 Total taxa = 28 Total taxa with sensitivity values = 26 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-25 Table 1-20. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Tooley Creek downstream station in May of 2020. Species/taxona Number of individuals" Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/o hair 1 1.0 1 1.0 Annelida Polychaeta Eteone heteropoda 1 1.6 1 1.6 Polydora cornuta 2 1.2 1 1.2 Arthropoda Insecta Hemiptera Trichocorixa sexcinta 1 1.0 1 1.0 Malacostraca Amphipoda Apocorophium louisianum 4 2.2 3 6.6 Apocorophium sp. 49 2.2 30 66.0 Gammarus mucronatus 5 2.3 3 6.9 Gammarus tigrinus 69 2.0 30 60.0 Decapoda Palaemonetes pugio 6 2.5 3 7.5 Isopoda Cassidinidea lunifrons 3 2.0 3 6.0 Edotia montosa 6 2.6 3 7.8 Ligia exotica 2 1.0 1 1.0 Mysida Americamysis almyra 5 2.2 3 6.6 Tanaidacea Hargeria rapax 90 1.6 30 48.0 Maxillopoda Sessilia Balanus improvisus 1 2.0 1 2.0 Balanus subalbidus 1 2.0 1 2.0 Mollusca Bivalvia Mytiloida Geukensia demissa 1 3.4 1 3.4 Gastropoda Neotaenioglossa Littoridinops tenuipes 73 2.0 30 60.0 Total 146 288.6 Estuarine Biotic Index = 1.98 Total taxa = 18 Total taxa with sensitivity values = 17 aOnly those taxa for which a sensitivity value is available are displayed. "Total number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-26 Table 1-21. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Muddy Creek upstream station in May 2020. Species/taxona Number of individuals" Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 20 1.0 10 10.0 Naididae w/o hair 4 1.0 3 3.0 Paranais litoralis 1 1.1 1 1.1 Polychaeta Amphicteis floridus 126 2.0 100 200.0 Laeonereis culveri 1 1.0 1 1.0 Polydora cornuta 18 1.2 10 12.0 Arthropoda Insecta Coleoptera Berosus sp. 8 1.5 3 4.5 Diptera Apedilum sp. 11 4.0 10 40.0 Bezzia/Palpomyia complex 3 2.3 3 6.9 Chironomus decorus 17 1.0 10 10.0 Chrysops sp. 1 2.2 1 2.2 Cricotopus sp. 1 1.4 1 1.4 Dicrotendipes nervosus 3 1.0 3 3.0 Dolichopodidae sp. 1 1.0 1 1.0 Goeldichironomus devineyae 92 2.0 30 60.0 Parachironomus sp. 2 1.1 1 1.1 Polypedilum sp. 2 1.5 1 1.5 Hemiptera Corixidae sp. 41 1.3 30 39.0 Trichocorixa sexcinta 3 1.0 3 3.0 Odonata Enallagma sp. 2 1.5 1 1.5 Malacostraca Amphipoda Apocorophium louisianum 199 2.2 100 220.0 Apocorophium sp. 258 2.2 100 220.0 Gammarus mucronatus 6 2.3 3 6.9 Gammarus tigrinus 300 2.0 100 200.0 Orchestia uhleri 25 2.0 10 20.0 Decapoda Palaemonetes pugio 8 2.5 3 7.5 Isopoda Cassidinidea lunifrons 29 2.0 10 20.0 Cyathura polita 1 2.0 1 2.0 Mysida Americamysis almyra 108 2.2 100 220.0 Mollusca Bivalvia Mytiloida Geukensia demissa 2 3.4 1 3.4 Mytilopsis leucophaeata 6 1.5 3 4.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 182 2.0 100 200.0 Total 754 1,526.5 Estuarine Biotic Index = 2.02 Total taxa = 34 Total taxa with sensitivity values = 29 aOnly those taxa for which a sensitivity value is available are displayed. "Total number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-27 Table 1-22. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Muddy Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae w/o hair sp. 3 1.0 3 3.0 Polychaeta Amphicteis floridus 1 2.0 1 2.0 Eteone heteropoda 3 1.6 3 4.8 Laeonereis culveri 1 1.0 1 1.0 Polydora cornuta 9 1.2 3 3.6 Streblospio benedicti 1 1.1 1 1.1 Arthropoda I nsecta Diptera Apedilum sp. 7 4.0 3 12.0 Chironomus decorus 26 1.0 10 10.0 Goeldichironomus devineyae 25 2.0 10 20.0 Tanytarsus sp. 4 2.3 3 6.9 Hemiptera Corixidae sp. 42 1.3 30 39.0 Trichocorixa sexcinta 9 1.0 3 3.0 Malacostraca Amphipoda Apocorophium lacustre 1 2.2 1 2.2 Apocorophium louisianum 14 2.2 10 22.0 Apocorophium sp. 66 2.2 30 66.0 Gammarus mucronatus 17 2.3 10 23.0 Gammarus tigrinus 276 2.0 100 200.0 Orchestia uhleri 4 2.0 3 6.0 Decapoda Palaemonetes pugio 4 2.5 3 7.5 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 5 2.0 3 6.0 Cyathura polita 1 2.0 1 2.0 Edotia montosa 5 2.6 3 7.8 Tanaidacea Hargeria rapax 3 1.6 3 4.8 Mollusca Bivalvia Veneroida Mytilopsis leucophaeta 1 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 242 2.0 100 200.0 Total 340 657.7 Estuarine Biotic Index = 1.93 Total taxa = 29 Total taxa with sensitivity values = 24 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-28 Table 1-23. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Huddles Cut upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Hirudinea Myzobdella lugubris 2 1.5 1 1.5 Clitellata Tubificoides heterochaetus 27 1.1 10 11.0 Polychaeta Amphicteis floridus 1 2.0 1 2.0 Eteone heteropda 4 1.6 3 4.8 Heteromastus filiformis 12 1.1 10 11.0 Mediomastus ambiseta 31 2.0 30 60.0 Neanthes succinea 4 1.7 3 5.1 Polydora cornuta 4 1.2 3 3.6 Streblospio benedicti 23 1.1 10 11.0 Arthropoda I nsecta Diptera Bezzia/Palpomyia complex 2 2.3 1 2.3 Glyptotendipes sp. 9 1.3 3 3.9 Malacostraca Amphipoda Apocorophium louisianum 5 2.2 3 6.6 Apocorophium sp. 4 2.2 3 6.6 Gammarus tigrinus 5 2.0 3 6.0 Decapoda Palaemonetes pugio 228 2.5 100 250.0 Mollusca Bivalvia Macoma tenta 1 2.0 1 2.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 9 2.0 3 6.0 Total 188 393.4 Estuarine Biotic Index = 2.09 Total taxa = 18 Total taxa with sensitivity values = 16 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-29 Table 1-24. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Huddles Cut downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Hirudinea Myzobdella lugubris 3 1.5 3 4.5 Clitellata Naididae sp. w/o hair 7 1.0 3 3.0 Polychaeta Eteone heteropoda 1 1.6 1 1.6 Neanthes succinea 1 1.7 1 1.7 Polydora cornuta 3 1.2 3 3.6 Arthropoda I nsecta Diptera Glyptotendipes sp. 1 1.3 1 1.3 Malacostraca Amphipoda Ameroculodes complex 1 2.6 1 2.6 Apocorophium lacustre 8 2.2 3 6.6 Apocorophium louisianum 1 2.2 1 2.2 Apocorophium sp. 5 2.2 3 6.6 Gammarus mucronatus 23 2.3 10 23.0 Gammarus tigrinus 270 2.0 100 200.0 Lepidactylus dytiscus 30 3.5 30 105.0 Decapoda Callinectes sapidus 1 2.3 1 2.3 Palaemonetes pugio 135 2.5 100 250.0 Rhithropanopeus harrisii 1 2.5 1 2.5 I sopoda Cyathura polita 1 2.0 1 2.0 Edotia montosa 4 2.6 3 7.8 Hargeria rapax 1 1.6 1 1.6 Maxillopoda Sessilia Balanus improvisus 3 2.0 3 6.0 Mollusca Bivalvia Mytiloida Geukensia demissa 4 3.4 3 10.2 Total 273 644.1 Estuarine Biotic Index = 2.36 Total taxa = 22 Total taxa with sensitivity values = 20 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-30 Table 1-25. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Porter Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 1 1.0 1 1.0 Polychaeta Amphicteis floridus 98 2.0 30 60.0 Streblospio benedicti 6 1.1 3 3.3 Arthropoda I nsecta Coleoptera Berosus sp. 19 1.5 10 15.0 Diptera Bezzia/Palpomyia complex 3 2.3 3 6.9 Chironomus decorus 37 1.0 30 30.0 Dicrotendipes nervosus 4 1.0 3 3.0 Polydora cornuta 9 1.2 3 3.6 Tanytarsus sp. 51 2.3 30 69.0 Hemiptera Abedus/Belostoma complex 6 1.0 3 3.0 Corixidae sp. 3 1.3 3 3.9 Ranatra nigra 1 2.6 1 2.6 Malacostraca Amphipoda Apocorophium louisianum 202 2.2 100 220.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 300 2.0 100 200.0 Decapoda Palaemonetes pugio 27 2.5 10 25.0 Isopoda Cassidinidea lunifrons 17 2.0 10 20.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 3 1.5 3 4.5 Gastropoda Littoridinops tenuipes 300 2.0 100 200.0 Total 543 1,090.8 Estuarine Biotic Index = 2.01 Total taxa = 21 Total taxa with sensitivity values = 18 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-31 Table 1-26. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Porter Creek downstream station in May of 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/o hair 1 1 1 1.0 Paranais litoralis 3 1.1 3 3.3 Polychaeta Amphicteis floridus 2 2.0 1 2.0 Eteone heteropoda 1 1.6 1 1.6 Polydora cornuta 105 1.2 100 120.0 Arthropoda I nsecta Diptera Chironomus decorus 2 1.0 1 1.0 Dicrotendipes nervosus 8 1.0 3 3.0 Goeldichironomus devineyae 13 2.0 10 20.0 Hemiptera Corixidae sp. 1 1.3 1 1.3 Malacostraca Amphipoda Apocorophium louisianum 40 2.2 30 66.0 Apocorophium sp. 232 2.2 100 220.0 Gammarus mucronatus 3 2.3 3 6.9 Gammarus tigrinus 252 2.0 100 200.0 Decapoda Palaemonetes pugio 6 2.5 3 7.5 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cyathura polita 5 2.0 3 6.0 Edotia montosa 2 2.6 1 2.6 Tanaidacea Hargeria rapax 197 1.6 100 160.0 Maxillopoda Sessilia Balanus subalbidus 4 2.0 3 6.0 Mollusca Gastropoda Littoridinops tenuipes 160 2.0 100 200.0 Total 565 1,030.7 Estuarine Biotic Index = 1.82 Total taxa = 21 Total taxa with sensitivity values = 18 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. 'Sensitivity values provided by NCDWR. 1-32 Table 1-27. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT11 upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 2 1.0 1 1.0 Naididae sp. w/o hair 7 1.0 3 3.0 Polychaeta Amphicteis floridus 63 2.0 30 60.0 Eteone heteropoda 5 1.6 3 4.8 Arthropoda Insecta Coleoptera Berosus sp. 28 1.5 10 15.0 Peltodytes sp. 6 1.4 3 4.2 Diptera Bezzia/Palmonyia complex 3 2.3 3 6.9 Cricotopus sp. 2 1.4 1 1.4 Dicrotendipes nervosus 27 1.0 10 10.0 Goeldichironomus devineyae 92 2.0 30 60.0 Tanytarsus sp. 127 2.3 100 230.0 Hemiptera Abedus/Belostoma 2 1.0 1 1.0 Ranatra nigra 3 2.6 3 7.8 Odonata Enallagma sp. 2 1.5 1 1.5 Malacostraca Amphipoda Apocophorium lacustre 84 2.2 30 66.0 Apocophorium louisianum 48 2.2 30 66.0 Apocophorium sp. 300 2.2 100 220.0 Gammarus tigrinus 300 2.0 100 200.0 Isopoda Cassidinidea lunifrons 17 2.0 10 20.0 Cyathura polita 2 2.0 1 2.0 Mollusca Bivalvia Mytilopsis leucophaeta 6 1.5 3 4.5 Gastropoda Littoridinops tenuipes 300 2.0 100 200.0 Total 573 1,185.1 Estuarine Biotic Index = 2.07 Total taxa = 25 Total taxa with sensitivity values = 21 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-33 Table 1-28. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT11 downstream station in May of 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. 2 1 1 1.0 Naididae sp. w/o hair 2 1 1 1.0 Limnodrilus hoffmeisteri 2 1 1 1.0 Polychaeta Amphicteis floridus 48 2.0 30 60.0 Eteone heteropoda 8 1.6 3 4.8 Polydora cornuta 2 1.2 1 1.2 Streblospio benedicti 2 1.1 1 1.1 Arthropoda I nsecta Coleoptera Berosus sp. 50 1.5 30 45.0 Diptera Bezzia/Palpomyia complex 6 2.3 3 6.9 Chironomus decorous 10 1.0 10 10.0 Chrysops sp. 2 2.2 1 2.2 Dicrotendipes nervosus 76 1.0 30 30.0 Goeldichironomus devineyae 182 2.0 100 200.0 Parachironomus sp. 2 1.1 1 1.1 Tanytarsus sp. 300 2.3 100 230.0 Hemiptera Corixidae sp. 4 1.3 3 3.9 Malacostraca Amphipoda Apocorophium lacustre 106 2.2 100 220.0 Apocorophium sp. 230 2.2 100 220.0 Gammarus tigrinus 284 2.0 100 200.0 Isopoda Cassidinidea lunifrons 30 2.0 30 60.0 Cyathura polita 2 2.0 1 2.0 Maxillopoda Sessilia Balanus subalbidus 2 2.0 1 2.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeta 2 1.5 1 1.5 Rangia cuneata 4 1.0 3 3.0 Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 752 1,507.7 Estuarine Biotic Index = 2.00 Total taxa = 28 Total taxa with sensitivity values = 22 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-34 Table 1-29. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT19 upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 35 1.0 30 30.0 Naididae sp. w/o hair 12 1.0 10 10.0 Limnodrilus hoffmeisteri 4 1.0 3 3.0 Polychaeta Amphicteis floridus 4 2.0 3 6.0 Eteone heteropoda 13 1.6 10 16.0 Polydora cornuta 4 1.2 3 3.6 Arthropoda I nsecta Coleoptera Berosus sp. 165 1.5 100 150.0 Diptera Bezzia/Palpomyia complex 3 2.3 3 6.9 Chironomus decorus 3 1.0 3 3.0 Dicrotendipes nervosus 2 1.0 1 1.0 Goeldichironomus devineyae 64 2.0 30 60.0 Parachironomus sp. 1 1.1 1 1.1 Tabanus sp. 4 1.4 3 4.2 Tanytarsus sp. 17 2.3 10 23.0 Odonata Libellula sp. 1 1.1 1 1.1 Malacostraca Amphipoda Apocorophium louisianum 105 2.2 100 220.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 30 2.0 30 60.0 Orchestia uhleri 3 2.0 3 6.0 Decapoda Palaemonetes pugio 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 28 2.0 10 20.0 Tanaidacea Hargeria rapax 3 1.6 3 4.8 Mollusca Bivalvia Veneroida Mytilopsis leucopaeata 4 1.5 3 4.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 561 1,056.7 Estuarine Biotic Index = 1.88 Total taxa = 26 Total taxa with sensitivity values = 22 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-35 Table 1-30. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT19 downstream station in May of 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 17 1.0 10 10.0 Naididae sp. w/o hair 7 1.0 3 3.0 Paranais litoralis 1 1.1 1 1.1 Polychaeta Amphicteis floridus 19 2.0 10 20.0 Eteone heteropoda 5 1.6 3 4.8 Laeonereis culveri 3 1.0 3 3.0 Polydora cornuta 43 1.2 30 36.0 Arthropoda Insecta Coleoptera Berosus sp. 36 1.5 30 45.0 Diptera Chironomus decorus 25 1.0 10 10.0 Dicrotendipes nervosus 5 1.0 3 3.0 Goeldichironomus devineyae 105 2.0 100 200.0 Tanytarsus sp. 22 2.3 10 23.0 Hemiptera Ranatra nigra 4 2.6 3 7.8 Malacostraca Amphipoda Apocorophium louisianum 174 2.2 100 220.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 286 2.0 100 200.0 Decapoda Palaemonetes pugio 39 2.5 30 75.0 Isopoda Cassidinidea lunifrons 17 2.0 10 20.0 Cyathura polita 2 2.0 1 2.0 Edotia montosa 1 2.6 1 2.6 Tanaidacea Hargeria rapax 218 1.6 100 160.0 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 2 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 759 1,467.8 Estuarine Biotic Index = 1.93 Total taxa = 25 Total taxa with sensitivity values = 21 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. °Sensitivity values provided by NCDWR. 1-36 Table 1-31. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Duck Creek upstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 3 1.0 3 3.0 Naididae sp. w/o hair 2 1.0 1 1.0 Limnodrilus hoffmeisteri 4 1.0 3 3.0 Paranais litoralis 1 1.1 1 1.1 Polychaeta Amphicteis floridus 31 2.0 30 60.0 Streblospio benedicti 2 1.1 1 1.1 Arthropoda I nsecta Coleoptera Berosus sp. 27 1.5 10 15.0 Peltodytes sp. 22 1.4 10 14.0 Diptera Bezzia/Palpomyia complex 3 2.3 3 6.9 Chironomus decorous 5 1.0 3 3.0 Dicrotendipes nervosus 1 1.0 1 1.0 Parachironomus sp. 1 1.1 1 1.1 Tanytarsus sp. 21 2.3 10 23.0 Hemiptera Corixidae sp. 4 1.3 3 3.9 Ranatra nigra 1 2.6 1 2.6 Trichocorixa sexcinta 1 1.0 1 1.0 Malacostraca Amphipoda Apocophorium lacustre 1 2.2 1 2.2 Apocophorium sp. 4 2.2 3 6.6 Gammarus tigrinus 211 2.0 100 200.0 Isopoda Cassidindea lunifrons 16 2.0 10 20.0 Mysida Americamysis almyra 1 2.2 1 2.2 Mollusca Bivalvia Veneroida Mytilopsis leucophaeata 2 1.5 1 1.5 Gastropoda Neotaenioglossa Littoridinops tenuipes 300 2.0 100 200.0 Total 298 573.2 Estuarine Biotic Index = 1.92 Total taxa = 22 Total taxa with sensitivity values = 18 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-37 Table 1-32. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Duck Creek downstream station in May 2020. Species/taxona Number of individualsb Sensitivity value (SV)c Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 1 1.0 1 1.0 Paranais litoralis 2 1.1 1 1.1 Polychaeta Amphicteis floridus 3 2.0 3 6.0 Arthropoda Insecta Diptera Chironomus decorus 3 1.0 3 3.0 Cricotopus sp. 1 1.4 1 1.4 Dicrotendipes nervosus 15 1.0 10 10.0 Goeldichironomus devineyae 5 2.0 3 6.0 Parachironomus sp. 1 1.1 1 1.1 Tanytarsus sp. 2 2.3 1 2.3 Malacostraca Amphipoda Apocorophium lacustre 46 2.2 30 66.0 Apocorophium sp. 290 2.2 100 220.0 Gammarus tigrinus 177 2.0 100 200.0 Decapoda Palaemonetes pugio 93 2.5 30 75.0 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 1 2.0 1 2.0 Mollusca Gastropoda Neotaenioglossa Littoridinops tenuipes 141 2.0 100 200.0 Total 386 797.4 Estuarine Biotic Index = 2.07 Total taxa = 22 Total taxa with sensitivity values = 15 aOnly those taxa for which a sensitivity value is available are displayed. bTotal number of individuals caught in all three sweep replicates. `Sensitivity values provided by NCDWR. 1-38