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HomeMy WebLinkAbout2019 I-1 thru I-32 SweepsTable 1-1. Raw data from benthic sweep samples collected in May 2019 at each station in all 15 creeks in the PCS study. Benthic organisms were not counted beyond 100 individuals in any sample. Taxonomic hierarch Y Broomfield Creek SCUT1 control Jacks Creek Little Creek (control) � Jacobs Creek PA2 control Drinkwater Creek Long Creek control Tooley CreekHuddles Creek trol Cut Porter Creek DCUT11 DCUT19 control Duck Creek (control) ) U Down U Down U Down U Down U Down U Down U Down U Down U DownDown FMuddy Up Down Up Down Up Down Up Down Up Down Annelida Clitellata Enchytraeidae sp. 1 - 16 4 2 20 128 46 14 8 4 2 1 3 13 1 2 Glossiphoniidae sp. 2 4 - - - - - - - - - - - - - - - Naididae Naididae sp. - - - - 3 - 3 - - Naididae sp. w/ hair 16 38 4 - - 8 1 4 1 - - - - - - - - 3 - - - 8 8 Dero sp. 6 63 17 16 57 12 4 - - 8 82 3 136 9 9 14 7 - 48 2 67 71 190 4 269 Limnodrilus hoffineisteri - 1 2 - 4 - 4 - 4 - - - - - 11 - 6 - - - Limnodrilus sp. 1 - - - - - - - Naididae sp. w/o hair 8 73 127 - 16 - 12 68 6 90 - 36 30 9 6 4 4 2 10 6 152 4 2 - 6 16 2 10 Paranais litoralis - 4 - 4 - 1 20 22 - - 4 - - 10 1 - 1 2 1 - - 2 Tubificoides heterochaetus 4 - 1 - - - 26 - 6 Nais sp. - 12 6 - - - 36 - Pristina sp. 60 1 - - 233 - Piscicolidae Myzobdella lugubris - - 1 - - - - - - - - - - 2 1 1 - - - - - 2 Polychaeta Ampharetidae Amphicteis floridus 208 75 40 39 12 52 6 13 76 13 20 38 43 65 1 8 4 42 2 32 64 Capitellidae Heteromastus filiformis - - - - - - - - - - - - - - - - Mediomastus ambiseta - - - - - - - Nereididae Laeonereis culveri - 2 - 2 Neanthes succinea 1 - 1 - Spionidae Marenzelleria viridis - - - - - - - Polydora cornuta 1 1 4 - 12 5 2 6 2 Streblos io benedicti - - - 2 5 - - - 4 - - Arthropoda Arachnida Acari sp. - - - 16 - 2 8 2 - 4 - Crustacea Daphnia sp. - 24 - - 6 20 52 - - - - - - Balanus subalbidus 1 - 1 2 - - - 1 1 13 11 Balanus sp. - - - - - 1 - - Balanus improvisus 5 - 2 - Hageria rapax - - 8 3 33 100 - 1 Hexapoda Collembola Collembola sp. 2 1 1 - 1 - Anurida maritima - - - - 4 - 1 2 - - - Sminthuridae sp. 4 1 6 - 2 1 27 4 2 12 Insecta Insecta sp. - - - - - 18 Coleoptera Dystiscidae Celina sp. 4 - - 16 - Hydaticus bimarginatus - 2 Laccornis difformis - - 2 Neoporus sp. 1 - Gyrinidae - Dineutus carolinus 1 1-1 Table 1-1. (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) U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down U Down Hydrophilidae - - - - Berosus sp. 1 2 4 4 9 2 1 4 22 8 Tropisternus quadristriatus - - - - - - - - 4 - - - - - - Haliplidae Peltodytes sp. 2 2 2 4 5 2 1 2 - 2 - Diptera Ceratopogonidae Atrichopogon sp. - - - - - - - - - - - - - - - - - - - 2 - - 3 - Begia/Palpomyia complex 4 2 1 16 2 24 46 2 38 1 14 5 6 2 19 7 4 8 2 7 4 Chaoboridae Chaoborus albatus - - - - - - - - - - - - - - - - - Chironomidae Apedilum sp. - - - - - - - - - - 5 - - - - - - - Chironomus decorus 15 9 46 300 108 2 12 132 109 184 38 20 24 234 18 29 31 36 11 94 4 42 7 3 6 44 93 117 Chironomus sp. - - - - - - - - - - - - - - - - - 24 - - - - - - 2 - - Chironomus stigmaterus 68 1 8 32 28 3 2 44 10 3 1 22 4 40 Cladopelma sp. - - - - - - - - - - - - - - Clinotanypus sp. - 6 2 Cladotanytarsus sp. 1 4 - - Coelotanypus sp. - 19 - - - - - - - Cricotopus sp. 1 4 5 8 8 4 2 4 11 2 Cryptochironomus sp. 2 1 10 1 - - - - - - - - Cryptotendipes sp. - - - - - - 2 Dasyhelea sp. - 1 - - - - - 1 4 - - - - 8 - 8 3 - - - - - - - - Dicrotendipes nervosus 18 50 7 7 4 115 44 19 - 12 2 4 4 20 3 4 4 2 5 3 5 7 132 194 108 117 40 50 Dicrotendipes w/ tubule - - - - - - 50 - - - - - - - - - - - - - - - - - Endochironomus sp. 14 13 2 11 12 - 4 1 12 1 8 46 17 - 5 - - 16 1 - 1 2 - Glyptotendipes sp. - - - - 140 104 4 2 2 - - - - 20 - 4 - 18 1 5 11 - - - - 12 5 Goeldichironomus devineyae 1 2 - 2 8 46 4 52 134 204 204 300 41 63 176 15 80 63 54 69 36 3 24 31 8 5 28 35 9 6 Goeldichironomus holoprasinus 16 6 40 35 12 - - 3 - - - - 20 - - - 4 - 58 2 - 1 - - - - 12 - 34 - Kiefferulus sp. 20 25 13 99 16 8 - - 8 - 12 2 - 15 162 Larsia sp. - - - - - - - - - - - - - 13 - Limnophyes sp. 2 2 2 3 24 10 4 2 1 - - 5 - Nanocladius sp. 2 - - - - - - - - 8 14 6 Natarsia sp. - - - - 2 - - Orthocladiinae sp. - - - - - - - 4 - - 1 - 9 6 2 2 2 Parachironomus sp. 1 3 - 4 4 5 - 1 8 4 2 2 70 15 9 123 26 17 - 1 4 - - 1 4 1 Polypedilum sp. 31 15 8 25 4 - - 2 - - - - - - - - - - - 4 - - 1 - - 5 Procladius sp. - 6 5 11 - 4 - 1 8 1 1 4 7 Tanypodinae sp. - - 12 - - - - - - - - - - - - - - Tanypus neopunctipennis 2 10 30 - 92 4 - 1 4 16 34 3 - 1 2 10 12 46 Tanytarsus limneticus - - - - 144 12 4 - 6 8 218 4 - 14 - - - - - - 2 Tanytarsus sp. 2 22 1 11 148 112 4 7 130 76 148 54 36 13 180 13 16 13 10 6 85 3 75 63 91 274 127 116 1 Dolichopodidae Dolichopodidae sp. - - - 1 - 4 12 - 3 - - - - - - - - - - - - - Ephydridae Ephydridae sp. - - 8 - 1 Stratiomyidae Stratiomyidae sp. - - 2 Ephemeroptera Baetidae sp. - 1 Caenis sp. - - - - - - - - - - 10 - - - - - - Callibaetis sp. 13 3 2 3 4 1 8 1 2 8 100 56 37 - 6 2 2 1-2 Table 1-1. (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 U Down Up Down Up Down Up Down Up Down Up Down Hemiptera Belostomatidae Abedus/Belostoma sp. - 3 1 8 3 4 4 2 1 10 1 4 12 15 51 30 28 2 2 Belostoma flumineum 1 - - - - - - - - 2 - - 8 - - - 2 1 - Belostoma lutarium - 1 - - - - - - - - - - 2 - - - - - - 1 - 2 - - - Corixidae Corixidae sp. 29 109 45 3 220 247 234 2 16 5 172 16 10 300 77 87 40 86 64 - 18 11 77 Sigara sp. 2 - - - - Trichocorixa calva 3 8 3 - - - 92 - - - - - - - - - - - - 10 Trichocorma sexcinta - - - 64 56 - 1 80 2 3 60 14 11 24 24 10 28 1 9 Veliidae Platyvelia brachialis - - - - - 1 - - - - - - - - Microvelia sp. - 1 Veliidae sp. - 4 - Girridae Gerridae sp. 1 Rheumatobates tenuipes Hebridae Merragata sp. 1 Mesoveliidae Mesovelia mulsanti. - 2 Nepidae - - - Ranatra sp. - - - - 4 - 8 2 6 Ranatra nigra 1 - - 1 - - 2 - - 5 4 Renatra australis - - 4 - - - - 1 - - - - - - Naucoridae Pelocoris temoratus 1 - - 12 1 1 - 4 1 3 1 Lepidoptera Pyralidae Pyralidae sp. 1 - - - - - - - - - Odonata Aeshnidae Aeshna sp. - - - 1 Nasiaeschna pentacantha - - - 1 - - Coenagrionidae Enallagma sp. 12 14 3 15 88 19 2 18 4 52 48 7 2 226 15 91 37 98 62 1 22 3 13 10 8 29 2 Ischnura sp. 2 1 1 - - - 1 - 4 - - - - 4 - 4 - - 1 - - - - 3 - Libellulidae - - Brachymesia gravida - - - 4 - - - - Libellulidae sp. 8 - - - - Libellula sp. - 4 - 2 4 6 Pachydiplax longipennis - - 1 - - - - Perithemis tenera 1 4 - - - 2 Trichoptera Oecetis cinerascens - - 4 - - 4 4 4 - Oecetis inconspicua 3 4 - 4 - - - Malacostraca Amphipoda Corophiidae Apocorophium lacustre - 50 1 2 16 - - 3 19 8 6 29 28 6 27 20 - 10 2 7 Apocorophium louisianum 24 109 1 42 132 120 284 8 31 76 13 113 124 14 205 9 1 22 9 - Apocorophium sp. 116 295 18 108 233 224 300 35 216 190 112 140 247 98 300 29 1 107 - 1 - 21 - 26 Gammaridae Gammarustigrinus 7 49 1 133 120 183 300 90 18 139 12 84 207 147 152 68 93 164 132 190 1 7 109 184 122 67 145 18 214 186 300 1-3 Table 1-1. (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 U Down Up Down Up Down Up Down Up Down Up Down Talitridae Uhlorchestia uhleri 2 1 1 1 2 Decapoda Megalops sp. 1 - - 1 Cambaridae Procambarus sp. - - - - 8 - - - - - - - - - - - - - - - - - - Palaemonidae Palaemonetes pugio 1 3 12 20 - 50 2 34 16 6 11 8 20 10 15 6 23 144 150 12 2 73 115 Panopeidae Rhithropanopeus harrisii 1 4 - - 1 - 1 2 - 1 - 1 1 Isopoda Anthuridae Cyathura polita 7 - 9 2 - - - - - - - 1 5 Bopyridae Probopyrus pandalicola 2 2 4 - 2 - 2 - - Idoteidae Edotia sp. - - - - - - - - - - - - - - - - 4 - - - - - - - - Sphaeromatidae Cassidinidea lunifrons 2 21 3 116 76 27 8 5 16 29 80 88 54 14 74 13 15 32 80 27 5 58 93 52 17 14 4 6 15 Mysida Mysidae Americamysis almyra - - 2 - 8 165 - 3 - 19 - - - - - 300 2 1 - 33 - - - - - - - - - Ostracoda Candonidae Candonidae sp. 23 2 7 59 112 6 - 2 - - - 4 2 16 - - - 140 - 3 28 - - 12 2 6 - 1 Cytherideidae Cyprideis littoralis 1 83 3 53 144 19 154 47 26 1 4 4 - - 94 2 35 10 29 121 109 26 16 26 36 42 108 46 Mol lusca Bivalvia Bivalvia sp. - - 19 - - - - - 4 - - - 2 - - - 2 Mytilidae Geukensia demissa - - - - - - - - - - 1 - Dreissenidae Mytilopsis leucophaeata - 5 4 8 104 1 10 2 1 1 4 1 6 13 Mactridae Mactridae sp. 1 Rangia cuneata Tellinidae Macoma balthica Macoma tents Gastropoda Basommatophora Ancylidae sp. - - 6 - - 4 - - - - Physidae sp. (physalphysella) 14 13 6 32 - - 34 1 - - - 12 3 - 2 - - 3 2 6 1 - - 64 - Neotaenioglossa Hydrobiidae Littoridinops sp. 40 1 25 12 216 300 30 251 300 300 300 300 62 300 242 221 100 300 144 300 221 18 249 250 40 147 258 300 46 189 Littorinadae Littorina irrorata - - - - - 2 - - Nematoda Nematoda sp. 2 Platyhelminthes Plat helminthes sp. - - - - 4 - - - - - - 2 - - - - - - - - - - 2 - - - - - - Total taxa 30 41 28 35 36 33 24 36 32 34 31 31 30 26 40 23 32 32 40 29 26 16 33 25 30 32 25 32 29 24 — = Species not collected at station 1-4 Table 1-2. Taxa collected in May 2019 from each benthic sweep sample station in all 13 creeks in the PCS study. Taxa for which EBI was calculated are shown with a * and other taxa are shown with a ✓ 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) U Down U 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 Clitel lata Enchytraeidae sp. * * * * * * Glossiphoniidae sp. Naididae Naididae sp. Naididae sp. w/ hair Dero sp. Limnodrilus hoffineisteri Limnodrilus sp. Naididae sp. w/o hair * * * * * * * * * * * * * * Paranais litoralis * * Tubificoides heterochaetus Nais sp. Pristina sp. ✓ ✓ ✓ Piscicolidae Myzobdella lugubris ✓ ✓ ✓ ✓ ✓ Polychaeta Ampharetidae Amphicteis flondus * * * * * * * * * * * Capitellidae Heteromastus filiformis Mediomastus ambiseta Nereididae Laeonereis culveri Neanthes succinea Spionidae Marenzelleria viddis Polydora cornuta Streblos io benedicti Arthropoda Arachnida Acari sp. ✓ ✓ ✓ ✓ ✓ Crustacea Daphnia sp. ✓ ✓ ✓ ✓ Balanus subalbidus Balanus sp. Balanus improvisus Hageria rapax Hexapoda Collembola Collembola sp. Anurida maritima ✓ ✓ ✓ Sminthuridae sp. ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Insecta Insecta sp. Coleoptera Dystiscidae Celina sp. ✓ ✓ Hydaticus bimarginatus Laccornis difformis ✓ Neoporus sp. Gyrinidae Dineutus carohnus ✓ 1-5 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 Hydrophilidae Berosus sp. Tropisternus quadristriatus Haliplidae Peltodytes sp. Diptera Ceratopogonidae Atrichopogon sp. Bezzia/Palpomyia complex * * * * * * * * * * * Chaoboridae Chaoborus albatus Chironomidae Apedilum sp. Chironomus decorus * * * * * * * * * * * * * * * * * * Chironomus sp. Chironomus stigmaterus ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Cladopelma sp. Clinotanypus sp. Cladotanytarsus sp. Coelotanypus sp. Cricotopus sp. Cryptochironomus sp. Cryptotendipes sp. Dasyhelea sp. Dicrotendipes nervosus * * * * * * * * * * * * * * * * * Dicrotendipes w/ tubule Endochironomus sp. * * * * * * * Glyptotendipes sp. * * * Goeldichironomus devineyae * * * * * * * * * * * * * * * * * * * Goeldichironomus holoprasinus ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Kiefferulus sp. ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Larsia sp. Limnophyes sp. ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Nanocladius sp. Natarsia sp. Orthocladiinae sp. ✓ ✓ ✓ ✓ ✓ ✓ ✓ Parachironomus sp. * * * * * * * * * * * Polypedilum sp. Procladius sp. * * * * * * * * * A Tanypodinae sp. ✓ Tanypus neopunctipennis * * * * * Tanytarsus limneticus ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Tanytarsus sp. Dolichopodidae Dolichopodidae sp. Ephydridae Ephydridae sp. ✓ ✓ Stratiomyidae Stratiomyidae sp. Ephemeroptera Baetidae sp. Caenis sp. Callibaetis sp. * * * * * * Z9 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 Hemiptera Belostomatidae Abedus/Belostoma sp. * * * * * * * * Belostoma flumineum Belostoma lutarium ✓ ✓ ✓ ✓ Corixidae Corixidae sp. Sigara sp. Trichocorixa calva ✓ ✓ ✓ ✓ ✓ Trichocorixa sexcinta * * * * * Veliidae Platyvelia brachialis ✓ Microvelia sp. ✓ Veliidae sp. Girridae Gerridae sp. Rheumatobates tenuipes Hebridae Merragata sp. ✓ Mesoveliidae Mesovelia mulsanti. ✓ Nepidae Ranatra sp. Ranatra nigra Renatra australis Naucoridae Pelocons femoratus Lepidoptera Pyralidae Pyralidae sp. Odonata Aeshnidae Aeshna sp. Nasiaeschna pentacantha Coenagrionidae Enallagma sp. Ischnura sp. Libellulidae Brachymesia gravida Libellulidae sp. Libellula sp. Pachydiplax longipennis Perithemis tenera ✓ ✓ ✓ Trichoptera Oecetis cinerascens Oecetis inconspicua Malacostraca Amphipoda Corophiidae Apocorophium lacustre * * * * * * * Apocorophium louisianum * * * * * * * * * Apocorophium sp. Gammaridae Gammarus tigrinus * * * * * * * * * * * * * * * * * * * * 1-7 Table 1-2. (concludedl 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 Talitridae Uhlorchestia uhleri Decapoda Megalops sp. Cambaridae Procambarus sp. Palaemonidae Palaemonetes pugio * * * * * * * * * * * * Panopeidae Rhithropanopeus harrisii Isopoda Anthuridae Cyathura polita Bopyridae Probopyrus pandalicola ✓ ✓ ✓ ✓ ✓ Idoteidae Edotia sp. Sphaeromatidae Cassidinidea lunifrons * * * * * * * * * * * * * * * * * * * Mysida Mysidae Americamysis almyra Ostracoda Candonidae Candonidae sp. ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Cytherideidae Cyprideis littoralis ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Mol Iusca Bivalvia Bivalvia sp. ✓ ✓ ✓ ✓ Mytilidae Geukensia demissa Dreissenidae Mytilopsis leucophaeata * * * Mactridae Mactridae sp. Rangia cuneata Tellinidae Macoma balthica Macoma tents Gastropoda Basommatophora Ancylidae sp. ✓ ✓ Physidae sp. (physalphysella) * * * * Neotaenioglossa Hydrobiidae Littondinops sp. * * * * * * * * * * * * * * * * * * * * Littorinadae Littonna irrorata Nematoda Nematoda sp. ✓ Platyhelminthes Plat helminthes sp. ✓ ✓ - Total taxa 30 41 28 35 37 33 24 36 32 34 31 31 30 26 40 23 32 32 40 29 26 16 33 25 30 32 25 32 29 24 —' = Species not collected at station w Table 1-3. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Broomfield Swamp Creek upstream station in May 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Naididae sp. w/o hair 8 1.0 3 3.0 Naididae sp. w/hair 16 1.0 10 10.0 Dero sp. 6 1.0 3 3.0 Arthropoda I nsecta Coleoptera Peltodytes sp. 2 1.4 1 1.4 Diptera Cryptochironomus sp. 2 1.0 1 1.0 Dicrotendipes nervosus 18 1.0 10 10.0 Endochironomus sp. 14 1.1 10 11.0 Goeldichironomus devineyae 1 2.0 1 2.0 Parachironomus sp. 1 1.1 1 1.1 Polypedilum sp. 31 1.5 30 45.0 Tanypus neopunctipennis 2 1.0 1 1.0 Tanytarsus sp. 2 2.3 1 2.3 Hemiptera Corixidae sp. 29 1.3 10 13.0 Odonata Enallagma sp. 12 1.5 10 15.0 Ischnura sp. 1 1.0 1 1.0 Ranatra nigra 1 2.6 1 2.6 Ephemeroptera Callibaetis sp. 13 1.1 10 11.0 Lepidoptera Pyralidae sp. 1 2.6 1 2.6 Malacostraca Amphipoda Gammarus tigrinus 7 2.0 3 6.0 Decapoda Palaemonetes pugio 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 2 2.0 1 2.0 Mollusca Gastropoda Littoridinops sp. 40 2.0 30 60.0 Physidae sp. (physa/physella) 14 1.3 10 13.0 Total 150 219.5 Estuarine Biotic Index = 1.46 Total taxa = 30 Total taxa with sensitivitv 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. 1-9 Table 1-4. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Broomfield Swamp Creek downstream station in May of 2019. S ecies/taxona Number of individual sb Sensitivity value SV ° Abundance value n Product of S n Annelida Clitellata Enchytraeidae sp. 1 1 1 1.0 Naididae sp. w/o hair 73 1.0 30 30.0 Limnodrilus hoffineisteri 1 1.0 1 1.0 Paranais litoralis 4 1.1 3 3.3 Naididae sp. w/hair 38 1.0 30 30.0 Dero sp. 63 1.0 30 30.0 Polychaeta Polydora cornuta 1 1.2 1 1.2 Arthropoda Insecta Coleoptera Peltodytes sp. 2 1.4 1 1.4 Diptera Bezzia/Palpomyia complex 4 2.3 3 6.9 Chironomus decorus 15 1.0 10 10.0 Cryptochironomus sp. 1 1.0 1 1.0 Dasyhelea sp. 1 2.8 1 2.8 Dicrotendipes nervosus 50 1.0 30 30.0 Endochironomus sp. 13 1.1 10 11.0 Goeldichironomus devineyae 2 2.0 1 2.0 Parachironomus sp. 6 1.1 3 3.3 Polypedilum sp. 31 1.5 10 15.0 Procladius sp. 6 1.2 3 3.6 Tanypus neopunctipennis 10 1.0 10 10.0 Tanytarsus sp. 22 2.3 10 23.0 Hemiptera Corixidae sp. 103 1.3 100 130.0 Odonata Enallagma sp. 14 1.5 10 15.0 Ischnura sp. 1 1.0 1 1.0 Trichopetera Oecetis inconspicua 3 4.6 3 13.8 Ephemeroptera Callibaetis sp. 3 1.1 3 3.3 Malacostraca Amphipoda Gammarus tigrinus 49 2.0 30 60.0 Isopoda Cassidinidea lunifrons 21 2.0 10 20.0 Mollusca Bivalvia Mytilopsis Ieucophaeta 5 1.5 3 4.5 Gastropoda Littoridinops sp. 1 2.0 1 2.0 Physidae sp. (physa/physella) 13 1.3 10 13.0 Total 360 479.1 Estuarine Biotic Index = 1.34 Total taxa = 41 Total taxa with sensitivitv values = 28 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Naididae sp. w/o hair 127 1.0 100 100.0 Limnodrilus hoffineisteri 2 1.0 1 1.0 Arthropoda I nsecta Coleoptera Peltodytes sp. 2 1.4 1 1.4 Diptera Chironomus decorus 9 1.0 3 3.0 Coelotanypus sp. 1 1.8 10 18.0 Cryptochironomus sp. 10 1.0 10 10.0 Dicrotendipes nervosus 7 1.0 3 3.0 Endochironmus sp. 2 1.1 1 1.1 Polypedilum sp. 8 1.5 3 4.5 Procladius sp. 5 1.2 3 3.6 Tanypus neopunctipennis 30 1.0 30 30.0 Tanytarsus sp. 1 2.3 1 2.3 Hemiptera Corixidae sp. 45 1.3 30 39.0 Odonata Enallagma sp. 3 1.5 3 4.5 Ischnura sp. 1 1.0 1 1.0 Ephemeroptera Callibaetis sp. 2 1.1 1 1.1 Malacostraca Amphipoda Gammarus tigrinus 1 2.0 1 2.0 Isopoda Americamysis almyra 2 2.2 1 2.2 Cassidinidea lunifrons 3 2.0 3 6.0 Mollusca Gastropoda Littoridinops sp. 25 2.0 10 20.0 Physidae sp. (physa/physella) 6 1.3 3 3.9 Total 219 257.6 Estuarine Biotic Index = 1.18 Total taxa = 28 Total taxa with sensitivitv 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. 1m Table 1-6. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the SCUT1 downstream station in May of 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Naididae sp. w/hair 4 1 3 3.0 Dero sp. 17 1 10 10.0 Naididae sp. w/o hair 0.0 Nais sp. 12 1.3 10 13.0 Polychaeta Polydora cornuta 1 1.2 1 1.2 Arthropoda Insecta Coleoptera Berosus sp. 1 1.5 1 1.5 Diptera Bezzia/Palpomyia complex 2 2.3 1 2.3 Chironomus decorus 46 1.0 30 30.0 Cricotopus sp. 1 1.4 1 1.4 Cryptochironomus sp. 1 1.0 1 1.0 Dicrotendipes nervosus 7 1.0 3 3.0 Endochironmus sp. 11 1.1 10 11.0 Goeldichironomus devineyae 2 2.0 1 2.0 Parachironomus sp. 4 1.1 3 3.3 Polypedilum sp. 25 1.5 10 15.0 Procladius sp. 11 1.2 10 12.0 Tanytarsus sp. 11 2.3 10 23.0 Hemiptera Abedus/Belastoma sp. 3 1.0 3 3.0 Corixidae sp. 3 1.3 3 3.9 Odonata Enallagma sp. 15 1.5 10 15.0 Trichoptera Oecetis inconspicua 4 4.6 3 13.8 Ephemeroptera Callibaetis sp. 3 1.1 3 3.3 Malacostraca Amphipoda Gammarus tigrinus 133 2.0 100 200.0 Decapoda Palaemonetes pugio 3 2.5 3 7.5 Isopoda Cassidinidea lunifrons 116 2.0 100 200.0 Mollusca Gastropoda Littoridinops sp. 12 2.0 10 20.0 Physidae sp. (physa/physella) 32 1.3 30 39.0 Total I 1 370 638.2 Estuarine Biotic Index = 1.72 Total taxa = 35 Total taxa with sensitivitv values = 25 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 1-7. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacks Creek upstream station in May 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 16 1.0 10 10.0 Naididae sp. Wo hair 16 1.0 10 10.0 Limnodrilus hoffmeisteri 4 1.0 3 3.0 Dero sp. 16 1.0 10 10.0 Polychaeta Amphicteis floridus 208 2.0 100 200.0 Arthropoda Insecta Diptera Chironomus decorus 300 1.0 100 100.0 Dicrotendipes nervosus 4 1.0 3 3.0 Endochironomus sp. 12 1.1 10 11.0 Goeldichironomus devineyae 8 2.0 3 6.0 Glytotendipes sp. 140 1.3 100 130.0 Parachironomus sp. 4 1.1 3 3.3 Polypedilum sp. 4 1.5 3 4.5 Tanypus neopunctipennis 92 1.0 30 30.0 Tanytarsus sp. 148 2.3 100 230.0 Hemiptera Corixidae sp. 220 1.3 100 130.0 Ranatra australis 4 2.6 3 7.8 Trichocorixa sexcincta 64 1.0 30 30.0 Odonata Enallagma sp. 88 1.5 30 45.0 Ephemeroptera Callibaetis sp. 4 1.1 3 3.3 Malacostraca Amphipoda Apocorophium louisianum 24 2.2 10 22.0 Apocorophium sp. 116 2.2 100 220.0 Gammarus tigrinus 120 2.0 100 200.0 Decapoda Palaemonetes pugio 12 2.5 10 25.0 Isopoda Cassidinidea lunifrons 76 2.0 30 60.0 Mysida Americamysis almyra 8 2.2 3 6.6 Mollusca Bivalvia Mytilopsis leucophaeata 4 1.5 3 4.5 Gastropoda Littoridinops sp. 216 2.0 100 200.0 Total 1 1007 1,705.0 Estuarine Biotic Index = 1.69 Total taxa = 37 Total taxa with sensitivitv 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. 1-13 Table 1-8. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacks Creek downstream station in Mav 2019. Species/taxona Number of individualsb Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 4 1.0 3 3.0 Dero sp. 57 1.0 30 30.0 Naididae sp. w/o hair 12 1.0 10 10.0 Tubificoides heterochaetus 4 1.1 3 3.3 Polychaeta Amphecteis floridus 75 2.0 30 60.0 Polydora cornuta 4 1.2 3 3.6 Arthropoda Crustacea Balanus subalbidus 1 2.0 1 2.0 Insecta Diptera Beezia/Palpomyia complex 1 2.3 1 2.3 Chironomus decorus 108 1.0 100 100.0 Cladotanytarsus sp. 4 3.9 3 11.7 Dicrotendipes nervosus 115 1.0 100 100.0 Goeldichironomus devineyae 46 2.0 30 60.0 Glyptotendipes sp. 104 1.3 100 130.0 Parachironomus sp. 5 1.1 3 3.3 Tanypus neopunctipennis 4 1.0 3 3.0 Tanytarsus sp. 112 2.3 100 230.0 Hemiptera Corixidae sp. 247 1.3 100 130.0 Trichocorixa sexcinta 56 1.0 30 30.0 Odonata Enallagma sp. 19 1.5 10 15.0 Ephemeroptera Callibaetis sp. 1 1.1 1 1.1 Trichoptera Oecetis cinerascens 4 3.3 3 9.9 Malacostraca Amphipoda Apocorophium lacustre 59 2.2 30 66.0 Apocorophium louisianum 109 2.2 100 220.0 Apocorophium sp. 295 2.2 100 220.0 Gammarus tigrinus 183 2.0 100 200.0 Decapoda Palaemonetes pugio 20 2.5 10 25.0 Isopoda Cassidinidea lunifrons 27 2.0 10 20.0 Cyathura polita 7 2.0 3 6.0 Mysida Americamysis almyra 165 2.2 100 220.0 Mollusca Bivalvia Mytilopsis leucophaeata 8 1.5 3 4.5 Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 1220 2,119.7 Estuarine Biotic Index = 1.74 Total taxa = 33 Total taxa with sensitivitv values = 27 aOnly those taxa for which a sensitivity value is available are displayed bTotal number of individuals caught in all three sweep replicates. 1-14 Table 1-9. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Little Creek upstream station in May 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 2 1.0 1 1.0 Naididae sp. w/hair 8 1.0 3 3.0 Dero sp. 4 1.0 10 10.0 Naididae sp. w/o hair 68 1.0 30 30.0 Limnodrilus hoffineisteri 4 1.0 3 3.0 Paranais litoralis 4 1.1 3 3.3 Nais sp. 6 1.3 3 3.9 A rth ropoda Insecta Coleptera Hydaticus bimarginatus 2 1.1 1 1.1 Diptera Chironomus decorus 2 1.0 1 1.0 Dicrotendipes nervosus 44 1.0 30 30.0 Endochironomus sp. 4 1.1 3 3.3 Goeldichironomus devineyae 4 2.0 3 6.0 Glyptotendipes sp. 4 1.3 3 3.9 Tanytarsus sp. 4 2.3 3 6.9 Hemiptera Corixidae sp. 234 1.3 100 130.0 Ephemeroptera Callibaetis sp. 8 1.1 3 3.3 Odonata Enallagma sp. 2 1.5 1 1.5 Malacostraca Amphipoda Gammarus tigrinus 300 2.0 100 200.0 Decapoda Procambarus sp. 8 1.7 3 5.1 Isopoda Cassidinidea lunifrons 8 2.0 3 6.0 Mollusca Bivalvia Mytilopsis leucophaeata 104 1.5 100 150.0 Gastropoda Littoridinops sp. 30 2.0 30 60.0 Physidae sp. (physa/physella) 34 1.3 30 39.0 Total 467 701.3 Estuarine Biotic Index = 1.50 Total taxa = 24 Total taxa with sensitivitv values = 19 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Naididae sp. w/hair 1 1.0 1 1.0 Dero sp. 4 1.0 3 3.0 Naididae sp. w/o hair 6 1.0 3 3.0 Polychaeta Streblospio benedicti 2 1.1 1 1.1 A rth ropoda Crustacea Balanus subalbidus 2 2.0 1 2.0 Insecta Diptera Chironomus decorus 12 1.0 10 10.0 Dasyhelea sp. 1 2.8 1 2.8 Dicrotendipes nervosus 19 1.0 10 10.0 Dolichopodidae sp. 1 1.1 1 1.1 Endochironomus sp. 1 1.1 1 1.1 Goeldichironomus devineyae 52 2.0 30 60.0 Glyptotendipes sp. 2 1.3 1 1.3 Procladius sp. 4 1.2 3 3.6 Tanypus neopunctipennis 1 1.0 1 1.0 Tanytarsus sp. 7 2.3 10 23.0 Hemiptera Abedus/Belastoma sp. 1 1.0 1 1.0 Corixidae sp. 2 1.3 1 1.3 Trichocorixa sexcinta 1 1.0 1 1.0 Ephemeroptera Callibaetis sp. 1 1.1 1 1.1 Malacostraca Apocorophium lacustre 1 2.2 1 2.2 Apocorophium louisianum 1 2.2 1 2.2 Apocorophium sp. 18 2.2 10 22.0 Gammarus tigrinus 90 2.0 30 60.0 Decapoda Palaemonetes pugio 50 2.5 30 75.0 Isopoda Cassidinidea lunifrons 5 2.0 3 6.0 Mysida Americamysis almyra 3 2.2 3 6.6 Mollusca Bivalvia Mytilopsis leucophaeata 1 1.5 1 1.5 Gastropoda Littoridinops sp. 251 2 100 200.0 Physidae sp. (physa/physella) 1 1.3 1 1.3 Total 261 505.2 Estuarine Biotic Index = 1.94 Total taxa = 36 Total taxa with sensitivity values = 26 ISM. Table 1-11 Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Jacobs Creek upstream station in May 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 20 1.0 10 10.0 Naididae sp. w/hair 4 1.0 3 3.0 Naididae sp. w/o hair 90 1.0 30 30.0 Polychaeta Amphicteis floridus 40 2.0 30 60.0 Arthropoda Insecta Coleoptera Berosus sp. 2 1.5 1 1.5 Peltodytes sp. 2 1.4 1 1.4 Diptera Bezzia/Palpomyia complex 16 2.3 10 23.0 Chironomus decorus 132 1.0 100 100.0 Cricotopus sp. 4 1.4 3 4.2 Dasyhelea sp. 4 2.8 3 8.4 Endochironomus sp. 12 1.1 10 11.0 Goeldichironomus devineyae 134 2.0 100 200.0 Glyptotendipes sp. 2 1.0 1 1.0 Polypedium sp. 2 1.5 1 1.5 Tanypus neopunctipennis 4 1.0 3 3.0 Tanytarsus sp. 130 2.3 100 230.0 Hemiptera Abedus/Belastoma sp. 8 1.0 3 3.0 Corixidae sp. 16 1.3 10 13.0 Sigara sp. 2 1.4 1 1.4 Odonata Enallagma sp. 18 1.5 10 15.0 Ephemeroptera Callibaetis sp. 2 1.1 1 1.1 Malacostraca Amphipoda Apocorophium lacustre 2 2.2 1 2.2 Apocorophium louisianum 42 2.2 30 66.0 Apocorophium sp. 108 2.2 100 220.0 Gammarus tigrinus 18 2.0 10 20.0 Decapoda Palaemonetes pugio 2 2.5 1 2.5 Isopoda Cassidinidea lunifrons 16 2.0 10 20.0 Mollusca Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 1 683 1,252.2 Estuarine Biotic Index = 1.83 Total taxa = 32 Total taxa with sensitivitv values = 25 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 M av 2019. Species/taxona Number of individualsb Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae w/hair 1 1.0 1 1.0 Paranais litoralis 1 1.1 1 1.1 Tubificoides heterochaetus 1 1.1 1 1.1 Polychaeta Amphicteis floridus 39 2.0 30 60.0 Neanthes succinea 1 1.7 1 1.7 Streblospio benedicti 5 1.1 3 3.3 Arthropoda Crustacea Balanus improvisus 5 2.0 3 6.0 Hargeria rapax 8 1.6 3 4.8 Insecta Diptera Bezzia/Palpomyia complex 2 2.3 1 2.3 Chironomus decorus 109 1.0 100 100.0 Cricotopus sp. 5 1.4 3 4.2 Dicrotendipes nervosus 12 1.0 10 10.0 Dolichopodidae sp. 4 1.0 3 3.0 Endochironomus sp. 1 1.1 1 1.1 Goeldichironomus devineyae 204 2.0 100 200.0 Parachironomus sp. 1 1.1 1 1.1 Tanytarsus sp. 76 2.3 30 69.0 Hemiptera Abedus/Belastoma sp. 3 1.0 3 3.0 Corixidae sp. 5 1.3 3 3.9 Odonata Enallagma sp. 4 1.5 3 4.5 Ischnura sp. 1 1.0 1 1.0 Libellula sp. 4 1.1 3 3.3 Malacostraca Amphipoda Apocorophium lacustre 16 2.2 10 22.0 Apocorophium louisianum 132 2.2 100 220.0 Apocorophium sp. 233 2.2 100 220.0 Gammarus tigrinus 139 2.0 100 200.0 Decapoda Palaemonetes pugio 34 2.5 30 75.0 Isopoda Cassidinidea lunifrons 29 2.0 10 20.0 Cyathura polita 9 2.0 3 6.0 Mysida Americamysis almyra 19 2.2 10 22.0 Mollusca Bivalvia Mytilopsis leucophaeata 10 1.5 10 15.0 Gastropoda Littoridinops sp. 300 2.0 100 200.0 Littorina irrorata 2 1.0 1 1.0 Total 1 1 779 1 1,486.4 Estuarine Biotic Index = 1.91 Total taxa = 34 Total taxa with sensitivitv values = 32 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. 1-18 Table 1-13. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the PA2 Creek upstream station in May 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 128 1.0 100 100.0 Naididae sp. w/hair Dero sp. 6 1.0 3 3.0 Naididae sp. w/o hair 36 1.0 30 30.0 Limnodrilus hoffineisteri 4 1.0 3 3.0 Paranais litoralis 20 1.1 10 11.0 Polychaeta Amphicteis floridus 12 2.0 10 20.0 A rth ropoda Insecta Coleoptera Berosus sp. 4 1.5 3 4.5 Diptera Bezzia/Palpomyia complex 24 2.3 10 23.0 Chironomus decorus 184 1.0 100 100.0 Cricotopus sp. 8 1.4 3 4.2 Dolichipodidae sp. 12 1.0 10 10.0 Endochironomus sp. 8 1.1 3 3.3 Goeldichironomus devineyae 204 2.0 100 200.0 Parachironomus sp. 8 1.1 3 3.3 Tanypus neopunctipennis 16 1.0 10 10.0 Tanytarsus sp. 148 2.3 100 230.0 Hemiptera Abedus/Belastoma sp. 4 1.0 3 3.0 Corixidae sp. 172 1.3 100 130.0 Trichocorixa sexcinta 80 1.0 30 30.0 Odonata Enallagma sp. 52 1.5 30 45.0 Trichoptera Oecetis inconspicua 4 4.6 3 13.8 Malacostraca Amphipoda Apocorophium louisianum 120 2.2 100 220.0 Apocorophium sp. 224 2.2 100 220.0 Gammarus tigrinus 12 2.0 10 20.0 Decapoda Palaemonetes pugio 16 2.5 10 25.0 Isopoda Cassidinidea lunifrons 80 2.0 30 60.0 Mollusca Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 1014 1,722.1 Estuarine Biotic Index = 1.70 Total taxa = 31 Total taxa with sensitivity values = 22 aOnly those taxa for which a sensitivity value is available are displayed b Total 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 46 1.0 30 30.0 Naididae sp. w/hair Dero sp. 82 1.0 30 30.0 Naididae sp. w/o hair 30 1.0 30 30.0 Paranais litoralis 22 1.1 10 11.0 Polychaeta Amphicteis floridus 52 2.0 30 60.0 Arthropoda I nsecta Coleoptera Berosus sp. 4 1.5 3 4.5 Diptera Bezzia/Palpomyia complex 46 2.3 30 69.0 Chironomus decorus 38 1.0 30 30.0 Cricotopus sp. 8 1.4 3 4.2 Dicrotendipes nervosus 2 1.0 1 1.0 Endochironomus sp. 46 1.1 30 33.0 Goeldichironomus devineyae 300 2.0 100 200.0 Parachironomus sp. 4 1.1 3 3.3 Tanytarsus sp. 54 2.3 30 69.0 Ephemeroptera Callibaetis sp. 8 1.1 3 3.3 Hemiptera Abedus/Belastoma sp. 4 1.0 3 3.0 Corixidae sp. 16 1.3 10 13.0 Trichocorixa sexcinta 2 1.0 3 3.0 Pelocoris femoratus 12 2.3 10 23.0 Odonata Enallagma sp. 48 1.5 30 45.0 Ischnura sp. 4 1.0 3 3.0 Malacostraca Amphipoda Apocorophium louisianum 284 2.2 100 220.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 84 2.0 30 60.0 Decapoda Palaemonetes pugio 6 2.5 3 7.5 Isopoda Cassidinidea lunifrons 88 2.0 30 60.0 Mollusca Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 785 1,435.8 Estuarine Biotic Index = 1.83 Total taxa = 31 Total taxa with sensitivitv 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Enchytraeidae sp. 14 1.0 10 10.0 Naididae sp. w/hair Dero sp. 3 1.0 3 3.0 Naididae sp. w/out hair 9 1.0 3 3.0 Polychaeta Amphicteis floridus 6 2.0 3 6.0 Laeonereis culveri 2 1.0 1 1.0 Arthropoda Insecta Coleoptera Berosus sp. 9 1.5 3 4.5 Diptera Bezzia/Palmonyia complex 2 2.3 1 2.3 Chironomus decorus 20 1.0 10 10.0 Cricotopus sp. 4 1.4 3 4.2 Dicrotendipes nervosus 4 1.0 3 3.0 Dolichipodidae sp. 3 1.0 3 3.0 Endochironomus sp. 17 1.1 10 11.0 Goeldichironomus devineyae 41 2.0 30 60.0 Parachironomus sp. 2 1.1 1 1.1 Procladius sp. 1 1.2 1 1.2 Tanytarsus sp. 36 2.3 30 69.0 Hemiptera Abed us/Belostoma sp. 2 1.0 1 1.0 Corixidae sp. 10 1.3 10 13.0 Trichocorixa sexcinta 3 1.0 3 3.0 Ranatra nigra 1 2.6 1 2.6 Odonata Enallagma sp. 7 1.5 3 4.5 Malacostraca Amphipoda Apocorophium lacustre 3 2.2 3 6.6 Apocorophium louisianum 8 2.2 3 6.6 Apocorophium sp. 35 2.2 30 66.0 Gammarus tigrinus 207 2.0 100 200.0 Isopoda Cassidinidea lunifrons 54 2.0 30 60.0 Mollusca Bivalvia Mytilopsis leucophaeata 2 1.5 1 1.5 Gastropoda Littoridinops sp. 62 2.0 30 60.0 Total I 1 330 617.1 Estuarine Biotic Index = 1.87 Total taxa = 30 Total taxa with sensitivitv values = 25 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 I-16. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Drinkwater Creek downstream station in May 2019. Species/taxona Number of individualsb Sensitivity value (TV)' Abundance value (n) Product of (TV)(n) Annelida Clitellata Naididae sp. w/o hair 6 1.0 3 3.0 Polychaeta Amphicteis floridus 13 2.0 10 20.0 Arthropoda Insecta Diptera Chironomus decorus 24 1.0 10 10.0 Dicrotendipes nervosus 4 1.0 3 3.0 Goeldichironomus devineyae 63 2.0 30 60.0 Parachironomus sp. 2 1.1 1 1.1 Tanytarsus sp. 13 2.3 10 23.0 Hemiptera Abedus/Belastoma sp. 1 1.0 1 1.0 Pelocoris femoratus 1 2.3 1 2.3 Odonata Enallagma sp. 2 1.5 1 1.5 Crustacea Malacostraca Amphipoda Apocophorium lacustre 19 2.2 10 22.0 Apocophorium louisianum 31 2.2 30 66.0 Apocorophium sp. 216 2.2 100 220.0 Gammarus tigrinus 147 2.0 100 200.0 Uhlorchestia uhleri 2 2.0 1 2.0 Decapoda Paleomonetes pugio 11 2.5 10 25.0 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 14 2.0 10 20.0 Cyathura polita 2 2.0 1 2.0 Tanaidacea Hargeria rapax 3 1.6 3 4.8 Maxillopoda Sessilia Balanus subalbidus 1 2.0 1 2.0 Mollusca Bivalvia Mytilopsis leucophaeata 1 1.5 1 1.5 Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 1 438 892.7 Estuarine Biotic Index = 2.04 Total taxa = 26 Total taxa with sensitivitv values = 22 '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 2019. Species/taxona Number of individualsb Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae w/hair Dero sp. 136 1.0 100 100.0 Naididae w/out hair 4 1.0 3 3.0 Paranais litoralis 4 1.1 3 3.3 Polychaeta Amphicteis floridus 76 2.0 30 60.0 Polydora cornuta 12 1.2 10 12.0 Arthropoda Insecta Diptera Bezzia/Palpomyia complex 38 2.3 30 69.0 Chironomus decorus 234 1.0 100 100.0 Clinotanypus sp. 6 1.4 3 4.2 Dasyhelea sp. 8 2.8 3 8.4 Dicrotendipes nervosus 20 1.0 10 10.0 Glyptotendipes sp. 20 1.3 10 13.0 Goeldichironomus devineyae 176 2.0 100 200.0 Parachironomus sp. 70 1.1 30 33.0 Procladius sp. 8 1.2 3 3.6 Tanypus neopunctipennis 34 1.0 30 30.0 Tanytarsus sp. 180 2.3 100 230.0 Ephemeroptera Caenis sp. 10 2.1 10 21.0 Callibaetis sp. 100 1.1 100 110.0 Hemiptera Abedus/Belastoma sp. 10 1.0 10 10.0 Corixidae sp. 300 1.3 100 130.0 Trichocorixa sexcinta 60 1.0 30 30.0 Ranatra sp. 4 2.6 3 7.8 Odonata Enallagma sp. 226 1.5 100 150.0 Trichoptera Oecetis cinerascens 4 3.3 3 9.9 Malacostraca Amphipoda Apocorophium lacustrum 8 2.2 3 6.6 Apocorophium louisianum 76 2.2 30 66.0 Apocorophium sp. 190 2.2 100 220.0 Gammarus tigrinus 152 2.0 100 200.0 Decapoda Palaemonetes pugio 8 2.5 3 7.5 Rhithropanopeus harrisii 4 2.5 3 7.5 Isopoda Cassidinidea lunifrons 74 2.0 30 60.0 Gastropoda Littoridinops sp. 242 2.0 100 200.0 Physidae sp. (physa/physella) 12 1.3 10 13.0 Total 1300 2,128.8 Estuarine Biotic Index = 1.64 Total taxa = 40 Total taxa with sensitivitv values = 28 '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 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Arthropoda Insecta Di pte ra Bezzia/Palpomyia sp. 1 2.3 1 2.3 Chironomus decorus 18 1.0 10 10.0 Dicrotendipes nervosus 3 1.0 3 3.0 Goeldichironomus devineyae 15 2.0 10 20.0 Parachironomus sp. 15 1.1 10 11.0 Tanytarsus sp. 13 2.3 10 23.0 Ephemeroptera Callibaetis sp. 56 1.0 30 33.0 Hemiptera Abedus/Belastoma sp. 1 1.0 1 1.0 Corixidae sp. 77 1.3 30 39.0 Trichocorixa sexcinta 14 1.0 10 10.0 Odonata Enallagma sp. 15 1.5 10 15.0 Malacostraca Amphipoda Apocorophium lacustre 6 2.2 3 6.6 Apocorophium louisianum 13 2.2 10 22.0 Apocorophium sp. 112 2.2 100 220.0 Gammarus tigrinus 68 2.0 30 60.0 Decapoda Palaemonetes pugio 10 2.5 10 25.0 Isopoda Americamysis almyra 300 2.2 100 220.0 Cassidinidea lunifrons 13 2.0 10 20.0 Tanaidacea Hargeria rapax 33 1.6 30 48.0 Mollusca Bivalvia Geukensia demissa 1 3.4 1 3.4 Mytilopsis leucophaeata 1 1.5 1 1.5 Gastropoda Littoridinops sp. 221 2.0 100 200.0 Physidae sp. (physa/physella) 3 1.3 3 3.9 Total 523 997.7 Estuarine Biotic Index = 1.91 Total taxa = 23 Total taxa with sensitivity values = 22 aOnly those taxa for which a sensitivity value is available are displayed TTotal 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 2019. Number of Sensitivity Abundance Product of Species/taxona individuals value (SW value (n) (SV)(n) Annelida Clitellata Enchytraeidae sp. 8 1.0 3 3.0 Naididae w/hair Dero sp. 9 1.0 3 3.0 Naididae w/out hair 4 1.0 3 3.0 Polychaeta Amphicteis floridus 13 2.0 10 20.0 Arthropoda Insecta Coleoptera Peltodytes sp. 4 1.4 3 4.2 Diptera Apedilu m sp. 5 4.0 3 12.0 Bezzia/Palmonyia complex 14 2.3 10 23.0 Chironomus decorus 29 1.0 10 10.0 Dasyhelea sp. 8 2.8 3 8.4 Dicrotendipes nervosus 4 1.0 3 3.0 Endochironomus sp. 5 1.1 3 3.3 Glyptotendipes sp. 4 1.3 3 3.9 Goeldichironomus devineyae 80 2.0 30 60.0 Parachironomus sp. 9 1.1 3 3.3 Tanypus neopunctipennis 3 1.0 3 3.0 Tanytarsus sp. 16 2.3 10 23.0 Ephemeroptera Callibaetis sp. 37 1.1 30 33.0 Hemiptera Corixdae sp. 87 1.3 30 39.0 Trichocorixa sexcinta 11 1.0 10 10.0 Pelocoris femoratus 1 2.3 1 2.3 Odonata Enallagma sp. 91 1.5 30 45.0 Ischnura sp. 4 1.0 3 3.0 Malacostraca Amphipoda Apocorophium lacustre 29 2.2 10 22.0 Apocorophium louisianum 113 2.2 100 220.0 Apocorophium sp. 140 2.2 100 220.0 Gammarus tigrinus 93 2.0 30 60.0 Decapoda Palaemonetes pugio 10 2.5 10 25.0 Isopoda Cassidinidea lunifrons 15 2.0 10 20.0 Mysida Americamysis almyra 2 2.2 1 2.2 Mollusca Bivalvia Mytilopsis leucophaeta 4 1.5 3 4.5 Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 571 1.092.1 Estuarine Biotic Index = 1.91 Total taxa = 32 Total taxa with sensitivitv values = 28 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 2019. Species/taxona Number of individualsb Sensitivity value (SV)° Abundance value (n) Product of (SV)(n) Annelida Clitellata Enchytraeidae sp. 4 1.0 3 3.0 Naididae w/hair Dero sp. 9 1.0 3 3.0 Naididae w/out hair 2 1.0 1 1.0 Polychaeta Amphicteis floridus 20 2.0 10 20.0 Polydura cornuta 5 1.2 3 3.6 Arthropoda Insecta Coleoptera Peltodytes sp. 5 1.4 3 4.2 Tropisternus quadristriatus 4 1.1 3 3.3 Diptera Bezzia/Palmonyia complex 5 2.3 3 6.9 Chironomus decorus 31 1.0 30 30.0 Dasyhelea sp. 3 2.8 3 8.4 Dicrotendipes nervosus 4 1.0 3 3.0 Goeldichironomus devineyae 63 2.0 30 60.0 Parachironomus sp. 123 1.1 100 110.0 Tanytarsus sp. 13 2.3 10 23.0 Hemiptera Abedus/Belastoma sp. 4 1.0 3 3.0 Corixdae sp. 40 1.3 30 39.0 Trichocorixa sexcinta 24 1.0 10 10.0 Ranatra australis 1 2.3 1 2.3 Odonata Enallagma sp. 37 1.5 30 45.0 Crustacea Hargeria rapax 100 1.6 100 160.0 Malacostraca Amphipoda Apocorophium lacustre 28 2.2 10 22.0 Apocorophium louisianum 124 2.2 100 220.0 Apocorophium sp. 247 2.2 100 220.0 Gammarus tigrinus 164 2.0 100 200.0 Uhlorchestia uhleri 1 2.0 1 2.0 Decapoda Palaemonetes pugio 15 2.5 10 25.0 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 32 2.0 30 60.0 Edotia sp. 4 2.6 3 7.8 Mysida Americamysis almyra 1 2.2 1 2.2 Mollusca Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 835 1,500.2 Estuarine Biotic Index = 1.80 Total taxa = 32 Total taxa with sensitivity values = 28 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. 1-26 Table 1-21. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Muddy Creek upstream station in May 2019. S ecies/taxona Number of individual sb Sensitivity value SV ° Abundance value n Product of S n Annelida Clitellata Enchytraeidae sp. 2 1.0 1 1.0 Naididae w/hair Dero sp. 14 1.0 10 10.0 Naididae Wout hair 10 1.0 10 10.0 Paranais litoralis 10 1.1 10 11.0 Polychaeta Amphicteis floridus 38 2.0 30 60.0 Polydora cornuta 2 1.2 1 1.2 Arthropoda Insecta Coleoptera Berosus sp. 2 1.5 1 1.5 Peltodytes sp. 2 1.4 1 1.4 Diptera Bezzia/Palpomyia complex 6 2.3 3 6.9 Chironomus decorus 36 1.0 30 30.0 Chironomus sp. 24 1.0 10 10.0 Clinotanypus sp. 2 1.4 1 1.4 Cricotopus sp. 2 1.4 1 1.4 Dicrotendipes nervosus 2 1.0 1 1.0 Glyptotendipes sp. 18 1.3 10 13.0 Goeldichironomus devineyae 54 2.0 30 60.0 Parachironomus sp. 26 1.1 10 11.0 Tanytarsus sp. 10 2.3 10 23.0 Ephemeroptera Callibaetis sp. 6 1.1 3 3.3 Hemiptera Abedus/Belostoma complex 12 1.0 10 10.0 Corixidae sp. 86 1.3 30 39.0 Trichorixa sexcinta 24 1.0 10 10.0 Pelocoris femoratus 4 2.3 3 6.9 Ranatra nigra 2 2.6 1 2.6 Odonata Enallagma sp. 98 1.5 30 45.0 Ischnura sp. 4 1.0 3 3.0 Trichoptera Oecetis cinerascens 4 3.3 3 9.9 Malacostraca Amphipoda Apocorophium lacustre 6 2.2 3 6.6 Apocorophium louisianum 14 2.2 10 22.0 Apocorophium sp. 98 2.2 30 66.0 Gammarus tigrinus 132 2.0 100 200.0 Decapoda Palaemonetes pugio 6 2.5 3 7.5 Isopoda Cassidinidea lunifrons 80 2.0 30 60.0 Gastropoda Littoridinops sp. 144 2.0 100 200.0 Physidae sp. (physa/physella) 2 1.3 1 1.3 Total 540 946.9 Estuarine Biotic Index = 1.75 Total taxa = 40 Total taxa with sensitivitv values = 28 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. 1-27 Table 1-22. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Muddy Creek downstream station in May 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Naididae sp. w/hair Dero sp. 7 1.0 3 3.0 Polychaeta Amphicteis floridus 43 2.0 30 60.0 Polydora cornuta 6 1.2 3 3.6 Streblospio benedicti 4 1.1 3 3.3 A rth ropoda I nsecta Coleoptera Peltodytes sp. 1 1.4 1 1.4 Diptera Chironomus decorus 11 1.0 10 10.0 Dicrotendipes nervosus 5 1.0 3 3.0 Glyptotendipes sp. 1 1.3 1 1.3 Goeldichironomus devineyae 69 2.0 30 60.0 Parachironomus sp. 17 1.1 10 11.0 Tanytarsus sp. 6 2.3 3 6.9 Ephemeroptera Callibaetis sp. 2 1.1 1 1.1 Hemiptera Abedus/Belastoma sp. 15 1.0 10 10.0 Corixidae sp. 64 1.3 30 39.0 Trichocorixa sexcinta 10 1.0 10 10.0 Odonata Enallagma sp. 62 1.5 30 45.0 Trichoptera Oecetis cinerascens 4 3.3 3 9.9 Malacostraca Amphipoda Apocorophium lacustre 27 2.2 10 22.0 Apocorophium louisianum 205 2.2 100 220.0 Apocorophium sp. 300 2.2 100 220.0 Gammarus tigrinus 190 2.0 100 200.0 Decapoda Palaemonetes pugio 23 2.5 10 25.0 Rhithrhopanopeus harrish 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 27 2.0 10 20.0 Mysida Americamysis almyra 33 2.2 30 66.0 Mollusca Bivalvia Mytilopsis leucophaeta 1 1.5 1 1.5 Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total 643 1,255.5 Estuarine Biotic Index = 1.95 Total taxa = 29 Total taxa with sensitivitv values = 25 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 2019. 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 Naididae sp. w/o hair 6 1.0 3 3.0 Naididae sp. 3 1.0 3 3.0 Paranais litoralis 1 1.1 1 1.1 Tubificoides heterochaetus 23 1.1 10 11.0 Polychaeta Amphicteis floridus 65 2.0 30 60.0 Neanthes succinea 1 1.7 1 1.7 Polydora cornuta 2 1.2 1 1.2 Arthropoda I nsecta Diptera Bezzia/Palpomyia complex 2 2.3 1 2.3 Chironomus decorus 94 1.0 30 30.0 Cricotopus sp. 4 1.4 3 4.2 Goeldichironomus devineyae 36 2.0 30 60.0 Tanypus neopunctipennis 1 1.0 1 1.0 Tanytarsus sp. 85 2.3 30 69.0 Odonata Enallagma sp. 1 1.5 1 1.5 Malacostraca Amphipoda Apocorophium lacustre 20 2.2 10 22.0 Apocorophium louisianum 9 2.2 3 6.6 Apocorophium sp. 29 2.2 10 22.0 Gammarus tigrinus 7 2.0 3 6.0 Decapoda Palaemonetes pugio 144 2.5 100 250.0 Rhithropanopeus harrisii 2 2.5 1 2.5 Isopoda Cassidinea lunifrons 5 2.0 3 6.0 Maxillopoda Sessilia Balanus improvisus 2 2.0 1 2.0 Mollusca Gastropoda Littoridinops sp. 221 2.0 100 200.0 Total 377 767.1 Estuarine Biotic Index = 2.03 Total taxa = 26 Total taxa with sensitivitv values = 21 '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. 1-29 Table 1-24. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Huddles Cut downstream station in May 2019. 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 Polychaeta Amphicteis floridus 1 2.0 1 2.0 Arthropoda I nsecta Diptera Chironomus decorus 4 1.0 3 3.0 Dicrotendipes nervosus 3 1.0 3 3.0 Goeldichironomus devineyae 3 2.0 3 6.0 Tanytarsus sp. 3 2.3 3 6.9 Malacostraca Amphipoda Apocorophium louisianum 1 2.2 1 2.2 Apocorophium sp. 1 2.2 1 2.2 Gammarus tigrinus 109 2.0 100 200.0 Decapoda Palaemonetes pugio 150 2.5 100 250.0 Maxillopoda Sessilia Balanus subalbidus 1 2.0 1 2.0 Balanus sp. 1 2.0 1 2.0 Mollusca Gastropoda Littoridinops sp. 18 2.0 10 20.0 Total 230 502.3 Estuarine Biotic Index = 2.18 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. 1-30 Table 1-25. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the Porter Creek upstream station in May 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Dero sp. 48 1.0 30 30.0 Enchytraeidae sp. 13 1.0 10 10.0 Limnodrilus hoffineisteri 11 1.0 10 10.0 Naididae sp. w/hair 3 1.0 3 3.0 Naididae sp. w/o hair 152 1.0 100 100.0 Polychaeta Amphicteis floridus 8 2.0 3 6.0 Arthropoda I nsecta Diptera Bezzia/Palpomyia complex 19 2.3 10 23.0 Chironomus decorus 42 1.0 30 30.0 Dicrotendipes nervosus 5 1.0 3 3.0 Endochironomus sp. 16 1.1 10 11.0 Glyptotendipes sp. 5 1.3 3 3.9 Goeldichironomus devineyae 24 2.0 10 20.0 Larsia sp. 13 1.3 10 13.0 Polypedilum sp. 4 1.5 3 4.5 Procladius sp. 1 1.2 1 1.2 Tanypus neopunctipennis 2 1.0 1 1.0 Tanytarsus sp. 75 2.3 30 69.0 Hemiptera Corixidae sp. 18 1.3 10 13.0 Pelocoris femoratus 1 2.3 1 2.3 Ranatra sp. 8 2.6 3 7.8 Trichochorixa sexcinta 28 1.0 10 10.0 Odonata Enallagma sp. 22 1.5 10 15.0 Ischnrua sp. 1 1.0 1 1.0 Pachydiplax longipennis 1 1.0 1 1.0 Malacostraca Amphipoda Gammarus tigrinus 184 2.0 100 200.0 Uhlorchestia uhleri 1 2.0 1 2.0 Isopoda Cassidinidea lunifrons 58 2.0 30 60.0 Mollusca Bivalvia Mytilopsis leucophaeata 6 1.5 3 4.5 Gastropoda Littoridinops sp. 249 2.0 100 200.0 Physidae sp. (physa/physella) 3 1.3 3 3.9 Total 540 859.1 Estuarine Biotic Index = 1.59 Total taxa = 33 Total taxa with sensitivitv values = 28 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 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Dero sp. 2 1.0 1 1.0 Naididae sp. w/o hair 4 1.0 3 3.0 Paranais litoralis 1 1.1 1 1.1 Polychaeta Amphicteis floridus 4 2.0 3 6.0 Laeonereis culveri 2 1.0 1 1.0 Arthropoda I nsecta Diptera Chironomus decorus 7 1.0 3 3.0 Dicrotendipes nervosus 7 1.0 3 3.0 Endochironomus sp. 1 1.1 1 1.1 Glyptotendipes sp. 11 1.3 10 13.0 Goeldichironomus devineyae 31 2.0 30 60.0 Parachironomus sp. 1 1.1 1 1.1 Hemiptera Trichochorixa sexcinta 1 1.0 1 1.0 Odonata Enallagma sp. 3 1.5 3 4.5 Malacostraca Amphipoda Apocorophium lacustre 10 2.2 10 22.0 Apocorophium louisianum 22 2.2 10 22.0 Apocorophium sp. 107 2.2 100 220.0 Gammarus tigrinus 122 2.0 100 200.0 Decapoda Palaemonetes pugio 12 2.5 10 25.0 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 93 2.0 30 60.0 Maxillopoda Sessilia Balanus subalbidus 13 2.0 10 20.0 Mollusca Bivalvia Mytilopsis leucophaeata 13 1.5 10 15.0 Gastropoda Littoridinops sp. 250 2.0 100 200.0 Physidae sp. (physa/physella) 2 1.3 1 1.3 Total 443 886.6 Estuarine Biotic Index = 2.00 Total taxa = 25 Total taxa with sensitivity values = 22 aOnly those taxa for which a sensitivity value is available are displayed TTotal 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Dero sp. 67 1.0 30 30.0 Enchytraeidae sp. 1 1.0 1 1.0 Limnodrilus hoffineisteri 6 1.0 3 3.0 Naididae sp. w/o hair 2 1.0 1 1.0 Naididae sp. 2 1.0 3 3.0 Paranais litoralis 2 1.1 1 1.1 Arthropoda I nsecta Coleoptera Berosus sp. 1 1.5 1 1.5 Peltodytes sp. 2 1.4 1 1.4 Diptera Bezzia/Palmonyia complex 7 2.3 3 6.9 Chironomus decorus 3 1.0 3 3.0 Cricotopus sp. 11 1.4 10 14.0 Dicrotendipes nervosus 132 1.0 100 100.0 Goeldichironomus devineyae 8 2.0 3 6.0 Nanocladius sp. 8 2.0 3 6.0 Parachironomus sp. 4 1.1 3 3.3 Procladius sp. 1 1.2 1 1.2 Tanytarsus sp. 63 2.3 30 69.0 Hemiptera Abedus/Belastoma sp. 51 1.0 30 30.0 Microvelia sp. 1 1.3 1 1.3 Pelocoris femoratus 3 2.3 3 6.9 Odonata Enallagma sp. 13 1.5 10 15.0 Libellula sp. 2 1.1 1 1.1 Malacostraca Amphipoda Gammarus tigrinus 67 2.0 30 60.0 Uhlorchorestia uhleri 1 2.0 1 2.0 Isopoda Cassidinidea lunifrons 52 2.0 30 60.0 Mollusca Gastropoda Littoridinops sp. 40 2.0 30 60.0 Physidae sp. (physa/physella) 6 1.3 3 3.9 Total 336 491.6 Estuarine Biotic Index =1.46 Total taxa = 30 Total taxa with sensitivitv 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. 1-33 Table 1-28. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT11 downstream station in May of 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value n Product of SV n Annelida Clitellata Dero sp. 71 1.0 30 30.0 Paranais litoralis 1 1.0 1 1.0 Polychaeta Amphicteis floridus 42 2.0 30 60.0 Arthropoda I nsecta Coleoptera Berosus sp. 4 1.5 3 4.5 Diptera Atrichopogon sp. 2 2.3 1 2.3 Bezzia/Palmonyia complex 4 2.3 3 6.9 Chironomus decorus 6 1.0 3 3.0 Cricotopus sp. 2 1.4 1 1.4 Dicrotendipes nervosus 194 1.0 100 100.0 Goeldichironomus devineyae 5 2.0 3 6.0 Nanocladius sp. 14 2.0 10 20.0 Polypedilum sp. 1 1.5 1 1.5 Procladius sp. 4 1.2 3 3.6 Tanytarsus sp. 91 2.3 30 69.0 Hemiptera Abedus/Belastoma sp. 30 1.0 30 30.0 Corixidae sp. 11 1.3 10 13.0 Pelocoris femoratus 1 2.3 1 2.3 Ranatra sp. 2 2.6 1 2.6 Odonata Enallagma sp. 10 1.5 10 15.0 Malacostraca Amphipoda Apocorophium sp. 1 2.2 1 2.2 Gammarus tigrinus 145 2.0 100 200.0 Uhlorchorestia uhleri 2 2.0 1 2.0 Isopoda Cassidinidea lunifrons 17 2.0 10 20.0 Mollusca Gastropoda Littoridinops sp. 147 2.0 100 200.0 Physidae sp. (physa/physella) 1 1.3 1 1.3 Total 484 797.6 Estuarine Biotic Index = 1.65 Total taxa = 32 Total taxa with sensitivitv 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. 1-34 Table 1-29. Estuarine Biotic Index (EBI) calculations for benthic sweep samples at the DCUT19 upstream station in May 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Dero sp. 190 1.0 100 100.0 Naididae sp. w/o hair 6 1.0 3 3.0 Polychaeta Amphicteis floridus 2 2.0 1 2.0 Arthropoda I nse cta Coleoptera Bersus sp. 22 1.5 10 15.0 Peltodytes sp. 2 1.4 1 1.4 Di pte ra Bezzia/Palpomyia complex 8 2.3 3 6.9 Chironomus decorus 44 1.0 30 30.0 Chironomus sp. 2 1.0 1 1.0 Dicrotendipes nervosus 108 1.0 100 100.0 Goeldichironomus devineyae 28 2.0 10 20.0 Tanypus neopunctipennis . 10 1.0 10 10.0 Tanytarsus sp. 274 2.3 100 230.0 He mi pte ra Abedus/Belastoma sp. 28 1.0 10 10.0 Odonata Enallagma sp. 8 1.5 3 4.5 Libellula sp. 4 1.1 3 3.3 Malacostraca Amphipoda Gammarus tigrinus 18 2.0 10 20.0 Decapoda Palaemonetes pugio 2 2.5 1 2.5 Isopoda Cassidinidea lunifrons 14 2.0 10 20.0 Mollusca Gastropoda Littoridinops sp. 258 2.0 100 200.0 Total 506 779.6 Estuarine Biotic Index = 1.54 Total taxa = 25 Total taxa with sensitivitv values = 17 aOnly those taxa for which a sensitivity value is available are displayed. TTotal 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Dero sp. 4 1.0 3 3.0 Enchytraeidae sp. 2 1.0 1 1.0 Naididae sp. w/hair 8 1.0 3 3.0 Naididae sp. w/o hair 16 1.0 10 10.0 Polychaeta Amphicteis floridus 32 2.0 30 60.0 Arthropoda Crustacea Hargeria rapax 1 1.6 1 1.6 Insecta Coleoptera Bersus sp. 6 1.5 3 4.5 Diptera Bezzia/Palpomyia complex 2 2.3 1 2.3 Chironomus decorus 93 1.0 30 30.0 Dicrotendipes nervosus 117 1.0 100 100.0 Endochironomus sp. 1 1.1 1 1.1 Goeldichironomus devineyae 35 2.0 30 60.0 Naoncladius sp. 6 2.0 3 6.0 Parachironomus sp. 1 1.1 1 1.1 Tanypus neopunctipennis. 12 1.0 10 10.0 Tanytarsus sp. 127 2.3 100 230.0 Ephemeroptera Callibaetis sp. 2 1.1 1 1.1 Hemiptera Abedus/Belastoma sp. 2 1.0 1 1.0 Ranatra nigra 5 2.6 3 7.8 Malacostraca Amphipoda Apocorophium lacustre 2 2.2 1 2.2 Apocorophium louisianum 9 2.2 3 6.6 Apocorophium sp. 21 2.2 10 22.0 Gammarus tigrinus 214 2.0 100 200.0 Decapoda Palaemonetes pugio 73 2.5 30 75.0 Rhithropanopeus harrisii 1 2.5 1 2.5 Isopoda Cassidinidea lunifrons 4 2.0 3 6.0 Cyathura polita 1 2.0 1 2.0 Mollusca Gastropoda Littoridinops sp. 300 2.0 100 200.0 Total I 1 581 1,049.8 Estuarine Biotic Index = 1.81 Total taxa = 32 Total taxa with sensitivitv values = 25 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 2019. Species/taxona Number of individualsb Sensitivity value (SV)` Abundance value (n) Product of (SV)(n) Annelida Clitellata Dero sp. 269 1.0 100 100.0 Naididae sp. w/hair 8 1.0 3 3.0 Naididae sp. w/o hair 2 1.0 1 1.0 Nais sp. 36 1.3 30 39.0 Paranais litoralis 2 1.1 1 1.1 Arthropoda I nsecta Diptera Atrichopogon sp. 3 2.3 3 6.9 Bezzia/Palpomyia complex 7 2.3 3 6.9 Chironomus decorus 117 1.0 100 100.0 Dicrotendipes nervosus 40 1.0 30 30.0 Endochironomus sp. 2 1.1 1 1.1 Glyptotendipes sp. 12 1.3 10 13.0 Goeldichironomus devineyae 9 2.0 3 6.0 Parachironomus sp. 4 1.1 3 3.3 Tanypus neopunctipennis 46 1.0 30 30.0 Tanytarsus sp. 116 2.3 100 230.0 Hemiptera Corixidae sp. 77 1.3 30 39.0 Ranatra nigra 4 2.6 3 7.8 Ranatra sp. 6 2.6 3 7.8 Trichocorixa sexcinta 9 1.0 3 3.0 Odonata Enallagma sp. 29 1.5 10 15.0 Ischnura sp. 3 1.0 3 3.0 Libellula sp. 6 1.1 3 3.3 Malacostraca Amphipoda Gammarus tigrinus 186 2.0 100 200.0 Isopoda Cassidindea lunifrons 6 2.0 3 6.0 Mollusca Gastropoda Littoridinops sp. 46 2.0 30 60.0 Physidae sp. (physa/pysella) 64 1.3 30 39.0 Total 636 955.2 Estuarine Biotic Index = 1.50 Total taxa = 29 Total taxa with sensitivity values = 21 aOnly those taxa for which a sensitivity value is available are displayed TTotal 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 2019. S ecies/taxona Number of individualsb Sensitivity value SV ` Abundance value n Product of SV n Annelida Clitellata Naididae sp. w/o hair 10 1.0 10 10.0 Tubificoides heterochaetus . 6 1.1 3 3.3 Polychaeta Amphicteis floridus 64 2.0 30 60.0 Arthropoda Crustacea Balanus subalbidus 11 2.0 10 20.0 Insecta Diptera Bezzia/Palpomyia complex 4 2.3 3 6.9 Dicrotendipes nervosus 50 1.0 30 30.0 Glyptotendipes sp. 5 1.3 3 3.9 Goeldichironomus devineyae 6 2.0 3 6.0 Parachironomus sp. 1 1.1 1 1.1 Polypedilum sp. 5 1.5 3 4.5 Procladius sp. 7 1.2 3 3.6 Tanytarsus sp. 1 2.3 1 2.3 Hemiptera Abedus/Belastoma sp. 2 1.0 1 1.0 Odonata Enallagma sp. 2 1.5 1 1.5 Malacostraca Amphipoda Apocorophium lacustre 7 2.2 3 6.6 Apocorophium sp. 26 2.2 10 22.0 Gammarus tigrinus 300 2.0 100 200.0 Decapoda Palaemonetes pugio 115 2.5 100 250.0 Rhithropanopeus harrish 1 2.5 3 7.5 Isopoda Cassidindea lunifrons 15 2.0 10 20.0 Cyathura polita 5 2.0 3 6.0 Mollusca Gastropoda 0.0 Littoridinops sp. 189 2.0 100 200.0 Total 431 866.2 Estuarine Biotic Index = 2.01 Total taxa = 24 Total taxa with sensitivitv 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. 1-38