Benthic Macroinvertebrate Communities in the Lower Illinois River Basin

Benthic macroinvertebrate community samples were collected at eight stream stations during 1996 and 1997 as part of the National Water-Quality Assessment program (NAWQA), in the lower Illinois River Basin. Invertebrate collections were made in accordance with the NAWQA protocols for quantitative (Richest-Targeted Habitat) and qualitative (Qualitative-Multiple Habitat) samples (Cuffney and others, 1993).

During each station visit, one quantitative and one qualitative sample were collected. The quantitative sample was a composite of macroinvertebrates from about 10 submerged tree branches. Branches were cut underwater, gathered in a 425µm mesh net, and all invertebrates were washed or picked from the branches. The average length and average diameter of each branch were measured and used to calculate an approximate surface area. The qualitative sample was collected from many habitat types within the sampling reach to obtain as complete a list of invertebrate taxa as possible. All samples were preserved in formalin, and processed by the USGS National Water-Quality Laboratory.

Benthic Macroinvertebrate Communities During September 1996 - Part 2

Samples were collected from eleven stream reaches at six stream stations in the lower Illinois River Basin. Part 2 (below) of the results table has data from five samples, Part 1 has data from six samples, and data are also available for September 1997 . Phylum, Class, Order, Suborder, Family, Subfamily, and Tribe are listed and arranged according to the current USGS National Water-Quality Laboratory taxonomic hierarchy.

[Qn, quantitative sample; Ql, qualitative sample; sp., species; A, Adults; LV, Larvae; P, Pupae; *, present in qualitative sample; -, not found]
  05572000
Sangamon River at Monticello, Ill.		 05583000
Sangamon River near Oakford, Ill.		 05584500
La Moine River at Colmar, Ill.
 
  Reach A
9/12/1996		 Reach B
9/12/1996		 Reach C
9/13/1996		 Reach A
9/10/1996		 Reach A
9/11/1996
 
Surface area (m2) of quantitative sample 0.21 0.22 0.15 0.25 0.30
Taxon Life Stage
Qn
Ql
Qn
Ql
Qn
Ql
Qn
Ql
Qn
Ql
Platyhelminthes
Turbellaria
Turbellaria - - - - - - - - - -
Nematoda
Nematoda - - - * - - - - - -
Nematomorpha
Nematomorpha - - - - - * - - - -
Mollusca
Gastropoda
Gastropoda - - - - - - - - - -
Ancylidae
Ferrissia sp. - - - - - - - - - -
Physidae
Physidae - - - - - - - - - -
Physella sp. - * - * - * - - - -
Bivalvia
Bivalvia - - - - - - - - - -
Corbiculacea - - - - - - - - - -
Sphaeriidae
Sphaeriidae - - - - - - - - - -
Sphaeriinae 1 - - - - - - - - -
Annelida
Oligochaeta
Oligochaeta - - - - - - 64 - - -
Naididae
Naididae 16 - 32 - 1 - 48 - - -
Tubificidae
Tubificidae - - - - - * - * - *
Branchiura sowerbyi Beddard - - - * - - - - - -
Hirudinea
Glossiphoniidae
Glossiphoniidae - - - - - - - - - -
Arthropoda
Acari
Hydrachnidia 56 - 32 - - - - - 8 -
Malacostraca
Decapoda
Cambaridae
Cambaridae - - - * - * - - - -
Orconectes sp. - - 1 - - * - - - -
Isopoda
Asellidae
Caecidotea sp. - - - - - - - - - *
Amphipoda
Amphipoda - - - - 8 - - - - -
Gammaridae
Gammarus sp. - - - - - - - - - -
Hyalellidae
Hyalella azteca (Saussure) - - - - - - - - - -
Collembola
Collembola - - - - - - - - - - -
Collembola A - - - - - * - - - -
Insecta
Ephemeroptera
Ephemeroptera A - - - - - - 16 - - -
Ephemeroptera LV 96 - 80 - 24 - 80 - 120 -
Carapacea
Baetiscidae
Baetisca sp. LV - - - - - - - - - -
Furcatergalia
Ephemeridae
Hexagenia sp. LV - * - * - - - - - -
Caenidae
Caenidae LV - - 32 - - - - - - -
Caenis sp. LV 129 - - - 8 * - - 16 -
Leptohyphidae
Tricorythodes sp. LV 374 * 155 * 160 * - * 32 -
Pisciforma
Baetidae
Baetidae LV 248 * 224 * 120 - 208 * 176 *
Baetis sp. LV 24 * - * 32 * - - 40 -
Baetis flavistriga McDunnough LV - - - - - - - - - -
Baetis intercalaris McDunnough LV - - - - - - - - - -
Callibaetis sp. LV - - - - - - - - - -
Labiobaetis sp. LV - - - - - - - * - -
Setisura
Heptageniidae
Heptageniidae LV 201 - 435 * 160 - - - 265 *
Heptagenia sp. LV - - - - - - - - - -
Leucrocuta sp. LV - - - - - - - - - *
Stenacron sp. LV - - 1 - - - - - - -
Stenacron interpunctatum (Say) LV - * - * - - - - - *
Stenonema sp. LV 56 * 81 * 24 * - - 122 -
Stenonema exiguum Traver LV - * - * - * - - - *
Stenonema mexicanum (Ulmer) LV - - - - - - - * - -
Stenonema pulchellum (Walsh) LV - - - - - - - - 1 -
Stenonema terminatum (Walsh) LV - * - * - * - - - *
Isonychiidae
Isonychia sp. LV - * 5 * - * - * 54 *
Odonata
Zygoptera
Zygoptera LV - - - - - - - - - -
Calopterygidae
Calopterygidae LV - - - - - - - - - -
Calopteryx maculata (Beauvois) LV - - - - - - - - - -
Hetaerina sp. LV - - - - - - - - - -
Hetaerina americana (Fabricius) LV - - - - - - - - - -
Coenagrionidae
Coenagrionidae LV 16 * 16 - 16 * - - - -
Argia sp. LV 32 * 39 * - * - * - *
Enallagma sp. LV - - - - - - - - - -
Anisoptera
Aeshnidae
Boyeria sp. LV - - - - - - - - - -
Boyeria vinosa (Say) LV - * - * - * - - - *
Nasiaeschna pentacantha (Rambur) LV - - - - - * - - - -
Gomphidae
Gomphidae LV - - - - - - - - - -
Gomphus sp. LV - - - - - * - - - *
Macromiidae
Macromia taeniolata Rambur LV - - - - - - - - - -
Hemiptera
Hemiptera LV - - - - - - - - - -
Heteroptera
Belostomatidae
Belostomatinae
Belostoma flumineum Say - - - - - - - - - - -
Belostoma flumineum Say A - - - * - - - - - -
Corixidae
Corixidae - - - - - - - 5 - - -
Corixidae LV - - - - - - - - - -
Corixinae
Corixini
Palmacorixa sp. A - - - - - - - - - -
Palmacorixa gillettei Abbott - - - - - - - - - - -
Trichocorixa sp. - - - - - - - 1 - - -
Trichocorixa sp. A - - - - - - - * - -
Gerridae
Gerridae - - - - - - - - - 8 -
Gerrinae
Aquarius sp. LV - - - - - - - - - -
Rhagodotarsinae
Rheumatobates sp. - - - - - - - - - - -
Rheumatobates sp. A - - - - - - - * - *
Rheumatobates sp. LV - * - * - * - - - -
Trepobatinae
Metrobates sp. A - * - - - * - - - *
Metrobates sp. LV - - - - - - - - - -
Trepobates sp. LV - * - - - - - - - -
Mesoveliidae
Mesovelia sp. LV - - - - - - - - - -
Naucoridae
Naucorinae
Pelocoris sp. A - - - - - - - - - -
Nepidae
Nepa apiculata Uhler - - - - - - - - - - -
Veliidae
Veliidae - - - - - - - - - - -
Microveliinae
Microvelia sp. LV - - - - - - - - - *
Rhagoveliinae
Rhagovelia sp. - - - - - - - - - - -
Rhagovelia sp. A - - - - - * - * - *
Rhagovelia sp. LV - - - - - - - - - -
Megaloptera
Corydalidae
Corydalinae
Corydalus cornutus (Linnaeus) LV - - - - - - - * 3 *
Sialidae
Sialis sp. LV - - - - - * - - - -
Trichoptera
Trichoptera LV 48 - - - - - 176 - 8 -
Spicipalpia
Hydroptilidae
Hydroptilidae LV - - - - - - - - - -
Hydroptilidae P 8 - 1 - - - - - - -
Hydroptilinae
Hydroptila angusta Ross P - - - - - - - - - -
Hydroptila sp. LV - - - - - - - - - -
Hydroptila sp. P 8 - - - 8 - - - - -
Ochrotrichia tarsalis (Hagen) P - - - - - - - - - -
Annulipalpia
Philopotamidae
Chimarrinae
Chimarra sp. LV - - - - - - - - - -
Hydropsychidae
Hydropsychidae LV 1137 * 641 * 232 - 1072 * 392 *
Hydropsychinae
Ceratopsyche sp. LV - - - - - - - - - -
Ceratopsyche sp. P - - - - - - - - - -
Cheumatopsyche sp. LV 25 * 36 - - * - * 8 *
Cheumatopsyche sp. P - - - - - - - - - -
Cheumatopsyche pettiti (Banks) P - - - - - - - - - -
Hydropsyche sp. LV 305 - 600 - 312 - 865 - 72 -
Hydropsyche sp. P - - 3 - 9 - 1 * - -
Hydropsyche betteni Ross/depravata Hagen LV - - - - - - - - - -
Hydropsyche bidens Ross/orris Ross LV 8 - - - - - - - - -
Hydropsyche bidens Ross LV 40 * 172 - 138 * 946 * 24 -
Hydropsyche depravata group LV - - - - - - - - - -
Hydropsyche rossi Flint, Voshell, and Parker/simulans Ross LV 41 * 91 * 72 * 144 * - *
Hydropsyche rossi Flint, Voshell, and Parker/simulans Ross P - - - - - * - - - -
Potamyia flava (Hagen) LV - - - - - - - * - *
Polycentropodidae
Polycentropodinae
Neureclipsis sp. LV - * - * 8 * - - - -
Paranyctiophylax sp. LV - - - - - - - - - -
Integripalpia
Leptoceridae
Leptoceridae LV 8 - - - - - - - - -
Leptocerinae
Ceraclea sp. LV 16 - - - - - - - - -
Nectopsyche sp. LV 8 - - * - - - - - -
Nectopsyche candida (Hagen) LV - - - - - * - - - -
Oecetis sp. LV - - - - - - - - - -
Coleoptera
Adephaga
Carabidae
Carabidae A - - - - - - - - - -
Dytiscidae
Colymbetinae
Coptotomini
Coptotomus sp. A - - - - - * - - - -
Laccophilinae
Laccophilini
Laccophilus sp. A - - - - - - - - - -
Gyrinidae
Dineutus assimilis (Kirby) A - - - - - - - - - -
Gyrinus analis Say A - - - * - - - * - -
Haliplidae
Peltodytes sp. A - - - - - - - - - -
Polyphaga
Staphylinidae
Staphylinidae A - - - - - - - - - -
Hydrophilidae
Hydrophilidae LV - * - - - - - - - -
Berosus sp. A - - - - - - - - - -
Berosus sp. LV - - - - - - - - - -
Enochrus sp. A - - - - - - - - - -
Tropisternus blatchleyi d'Orchymont A - - - - - - - - - -
Tropisternus lateralis (Fabricius) A - - - - - - - - - -
Scirtidae
Scirtidae LV - * - * - * - - - *
Dryopidae
Helichus lithophilus (Germar) A - * 4 * 8 * - - 11 *
Elmidae
Elmidae LV - - 65 - - - - - 16 -
Elmidae P - - - - - * - - - -
Ancyronyx variegata (Germar) A - * - * - - - - - -
Ancyronyx variegata (Germar) LV 8 - - * - * - - - -
Dubiraphia sp. A 8 * - * - * - - - -
Dubiraphia sp. LV - - - * - - - - - *
Macronychus glabratus Say A 18 * 26 * 65 * - - 1 *
Macronychus glabratus Say LV 56 * 48 * 24 * - - - -
Stenelmis sp. A 1 * 15 * 33 * - - - *
Stenelmis sp. LV 42 * 16 * 8 - - - 9 *
Stenelmis grossa Sanderson A - * - - - - - - - *
Chrysomelidae
Chrysomelidae A - - - - - - - - - -
Diptera
Diptera A - * - - - - - - - -
Diptera LV - - - - - - - - - -
Diptera P - - - - - - - - 8 -
Nematocera
Ceratopogonidae
Ceratopogoninae
Ceratopogonidae P - - - - - - - - - -
Bezzia/Palpomyia sp. LV - - - - - - - - - -
Probezzia sp. LV - - - - - - - - - *
Forcipomyiinae
Atrichopogon sp. LV - - - - - - - - - -
Atrichopogon sp. P - - - - - - - - - -
Forcipomyia sp. P - - - - - - - - - -
Chironomidae
Chironomidae A - - - - - - - * - -
Chironomidae LV 281 * 261 * 128 * 2404 * 284 *
Chironomidae P 40 - 16 - 32 - 64 - 8 -
Chironominae
Chironominae P - * - * - * - * - *
Chironomini
Chironomini LV - - - * - * - * - *
Axarus sp. LV - - - - - - - - - -
Chironomus sp. LV - - - - - * - - - -
Cryptochironomus sp. LV - * - - - - - - - *
Cryptotendipes sp. LV - - - - - - - - - -
Dicrotendipes sp. LV - * - * - * - - - *
Glyptotendipes sp. LV - - - - - - - * - *
Harnischia sp. LV - - - - - - - - - *
Microtendipes sp. LV - - - - - - - - - -
Parachironomus sp. LV - - - * - - - * - -
Paralauterborniella sp. LV - - - - - - - - - -
Paratendipes sp. LV - - - - - - - - - -
Phaenopsectra sp. LV - - - - - - - - - -
Polypedilum sp. LV - * - * - * - * - *
Robackia sp. LV - - - - - * - - - -
Tribelos sp. LV - - - - - * - - - -
Xestochironomus sp. LV - - - * - - - - - -
Tanytarsini
Tanytarsini LV - - - * - - - - - -
Cladotanytarsus sp. LV - - - - - - - - - *
Paratanytarsus sp. LV - - - - - - - - - -
Rheotanytarsus sp. LV - * - * - * - * - *
Tanytarsus sp. LV - - - * - * - - - *
Orthocladiinae
Orthocladiinae LV - - - * - - - - - -
Corynoneura sp. LV - - - - - - - * - -
Cricotopus sp. LV - - - - - - - * - -
Cricotopus/Orthocladius sp. LV - - - - - - - * - -
Nanocladius sp. LV - - - - - - - - - -
Rheocricotopus sp. LV - * - * - * - - - *
Thienemanniella sp. LV - - - - - - - - - -
Tanypodinae
Tanypodinae LV - - - - - * - - - -
Tanypodinae P - - - - - * - - - -
Macropelopiini
Macropelopia sp. LV - - - - - - - - - *
Pentaneurini
Pentaneurini LV - - - - - - - - - -
Ablabesmyia sp. LV - * - * - * - - - *
Labrundinia sp. LV - - - * - - - - - -
Larsia sp. LV - * - - - - - * - *
Nilotanypus sp. LV - * - * - * - - - -
Thienemannimyia group sp. LV - * - * - * - * - *
Procladiini
Procladius sp. LV - * - - - - - - - -
Culicidae
Culicidae LV - - - - - - - - - -
Culicidae P - - - - - - - - - -
Anopheles sp. LV - - - - - * - - - -
Simuliidae
Simuliidae LV - * - * - * 114 * 8 -
Simuliidae P - - - - - - - - - -
Simulium sp. LV - - - * - - - * - -
Simulium sp. P - - - - - - - - - -
Tipulidae
Tipulidae LV - - - - - * - - - -
Brachycera
Empididae
Empididae LV - - - - 8 - - - - -
Empididae P - - - - - - - - - -
Chelifera/Hemerodromia sp. P - * 16 * - - - * - -
Hemerodromia sp. LV 64 - 83 * 41 - 32 - 16 -
Ephydridae
Ephydridae LV - - - - - - - - - -
Ephydra sp. LV - * - * - - - - - -
Tabanidae
Tabanidae LV - * - * - - - - - -


Introduction

Surface-Water Data

Ground-Water Data

Precipitation Data

Biological Data