macrobenthic study ofthe northern tributaries of otsego lake ......tributaries that empty into the...

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Macrobenthic study of the northern tributaries of Otsego Lake, summer 1998

Aaron Vanderlipl

INTRODUCTION

During the summer of 1998, macrobenthic collections were taken from four main tributaries that empty into the northern end of Otsego Lake: Cripple Creek, Hayden Creek, Shadow Brook, and White Creek. Twenty-one samples were taken at various locations along these waterways. A similar study was executed three years ago (Fahey, 1995). The 1998 collections were both qualitative and quantitative, giving a list of the invertebrates that inhabit the tributaries along with numerical data to show diversity, dominance, and abundance within these streams. Some conclusions regarding the health of these waters can be expressed by looking at their population profiles, and using the various taxa as indicators of water quality. For example, the orders Trichoptera (caddisflies), Plecoptera (stonetlies), and Ephemeroptera (mayflies) (EPTs) are generally considered good indicators of a high level of oxygen in the water; therefore, their presence and abundance serves as a good indication of a stream's health. The final results of this study, in conj unction with the results of geological/geochemical analysis (Fetterman, 1998), chemical analysis (Poulette, 1998), and fecal bacterial monitoring studies (Ingraham, 1998), will give us a better understanding of the water quality of these tributaries, and ultimately, Otsego Lake.

MATERIALS and METHODS

Samples of macrobenthic organisms were collected 2-4 June 98 at 21 different locations on 4 different tributaries. These included five sites on Cripple Creek, eight on Hayden Creek, five on Shadow Brook, and three on White Creek (Figure 1). Triangle nets, hand sieves, seines, and soft forceps were used to obtain invertebrates for the qualitative samples. They were actively collected dragging a hand sieve or a triangle net through the substrate, along the bank, or through the vegetation of the stream. Also rocks, dead logs and stems, and any larger items found in the stream were searched for invertebrates by using soft forceps. Organisms were also passively collected by stirring up the bottom of the stream and letting the current wash the organisms into the various nets, sieves, and seines, where they could be picked out. These types of samples were done in as many of the microhabitats at each sampling site as possible, so as to give the best representation of the number of different taxa. The quantitative samples were generally done in the riffles of the streams, where available.

Qualitative samples were generally collected using a Hess Sampler. The Hess has a sample space of 0.085 meters2

• It is placed in the riffle so that the collection cup faces down cunent. The area that the sampler encompasses was stirred up by hand, so that the invertebrates were washed down into the collection cup by the current. Larger rocks and debris inside the

1 Capstone experience, SUNY Oneonta, Environmental Sciences program, summer 1998

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SCAL< IN klLOMETUJ

o I J 4

I

Figure 1. Map of the 21 sampling sites on five major tributaries in the Otsego Lake watershed (Adapted from Paulette, 1998).

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sample area were examined and picked of all the organisms that were still clinging to them. At each site two of these Hess samples were taken.

In both the qualitative and quantitative samples, the organisms were preserved in 70% ethyl alcohol in labeled jars and taken back to SUNY Oneonta Biological Field Station. Once back at the field station, the qualitative samples were classified to their respective orders, and within the orders classified down as specifically as possible using taxonomic keys (Harman & Berg, 1971; Merritt & Cummings, 1996; Peckarsky et al., 1990; Pennak, 1953; Harman, 1998). The quantitative samples were dealt with in a different fashion. Once at the field station, a Rose Bengal solution was added to all of the sample jars to stain the organisms, making the removal of organisms and the subsequent removal of detritus easier. After this, the samples were examined under an illuminated magnifier', so that the stained organisms could be picked out of the sediment more efficiently. Once this process was complete, the organisms were keyed to order using the same taxonomic keys.

RESULTS

The results of the qualitative samplings are shown in Tables 1-4. The results of the quantitative samplings are shown in Tables 5-8.

DISCUSSION

When comparing the results of the qualitative samples that were collected on 3 June 98 with those taken on 30 June 95 (White Creek was not in the 1995 study), there was a noticeable increase in the number of sample sites inhabited by Plecoptera, Ephemeroptera, and various orders of Crustacea. There were no Plecoptera at any of the Shadow Brook sites in 1995; they are now located at all five sites, which leads to the belief that the overall health of the stream is improving. There also seems to be a greater diversity of genera per site and stream in 1998 than in 1995. This seems to be the case at every stream and across most sampling sites. Any decrease in the amount of genera was slight and almost unnoticeable. The reason for this could be an increase in the quality of the stream. However, the temporal differences in sampling dates between 1995 and 1998 is over three weeks. This could also explain some differences; in 1995, some of the aquatic insects may have had a chance to complete their life cycles and leave the stream. No conclusions can be drawn from the quantitative data at this time.

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Table 1. Summary of the macrobenthos samples taken from Cripple Creek, summer 1998.

SITE DATE CLASSIFICATION CCI 6/3/98 Mollusca

Bivalvia Sphaeracea

Corbiculidae Corbicula fluminea

Gastropoda Basommatrophora

Lymnaeidae Lymnaea humilis

Physidae Physella gyrina

Viviparidae Viviparus georgianus

Arthropoda Crustacea

Isopoda Asellidae

Lirceus Amphipoda

Talitridae Hyalella

Decapoda Cambaridae

Insecta Ephemeroptera

Caenidae Caenis

Odonata (Anisoptera) Aeshnidae

_________________-"C"-"o<=-r'''_du""l'-"e~ga"'s""tr'-"i"'-da=e

Odonata (Zygoptera) Lestidae

Lestes Coenagrionidae

Enallagmq Anomalagrion/Ischnura

Hemiptera Gerridae

Gerris Limnogonus

Coleoptera Dytiscidae

Celina Haliplidae

Peltodytes Hydrophilidae

Hydrobius Elmidae

Microcylloepus Orconectes rusticus

Diptera

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Table 1 (cont.). Summary of the macrobenthos samples taken from Cripple Creek, summer 1998.

SITE DATE CLASSIFICATION Tipulidae Stratiomyidae

HedriodiscuslOdontomyia Chironomidae

CC2 6/3/98 Mollusca Gastropoda

Basommatrophora Physidae

____~Phvsella~

Lymnaeidae ___________________~LVJJ111aea humilis

Viviparidae Vivivarus geQrgianus

Mesogastropda Hydrobiidae

Amnicola limosa Armelida

Hirudinea Arhynchobdellida

Erpobdellidae Erpobdella


Cladocera Isopoda

Asellidae Lirceus

Amphipoda Talitridae

Hvalella Decapoda

Cambaridae Orconectes rusticus


Caenidae Caenis

Odonata (Zygoptera) Coenagrionidae

Enallagma Hemiptera

Corixidae Cymatia

Trichoptera Leptoceridae

Setodes Coleoptera

Dytiscidae Celina

Haliplidae Peltodytes

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SITE DATE CLASSIFICATION Diptera

Ceratopogonidae BezziaiPalpormyia

Chironornidae CC3 6/3/98 Mollusca

Bivalvia Sphaeracea

Sphaeriidae Pisidium




Isopoda Asellidae


Ephemerellidae Ephemerella Serratella Drunella Attenella

Baetidae Cloeon

Heptageniidae Macdunnoa Epeorus

Odonata (Anisoptera) Petaluridae

Tachopteryx Aeshnidae

Aeshna Odonata (Zygoptera)

Calopterygidae Hetaerina

Plecoptera Pteronarcyidae

Pteronarcvs Leuctridae

Leuctra Nemouridae

Amphinemura Perlidae

Perlesta Acroneuria

Perlodidae Diura

Trichoptera Helicopsychidae

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SITE DATE CLASSIFICATION Helicopsyche

Hydropsychidae Macrostemum

Coleoptera Psephenidae

Psephenus Ectopria

Elmidae Stenelmis

Megaloptera Corydalidae

Nigronia Diptera

Empididae Hemerodromia

Chironomidae CC4 6/3/98 Mollusca

Bivalvia Sphaeracea



Lynmaeidae Lymnaea humilis


Vi viparidae Viviparus geogianus

Arthropoda Cmstacea

Isopoda Asellidae

___________________ Lirceus Decapoda

Cambaridae Orconectes limosus


Siphlonuridae Siphlonurus

Caenidae Caenis

Ephemerellidae Dannella


Boyeria Odonata (Zygoptera)

Lestidae Lestes

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Table 1 (coot.). Summary of the macrobenthos samples taken from Cripple Creek, summer 1998.

SITE DATE CLASSIFICATION Calopterygidae

Hetaerina Hemiptera

Corixidae Palmacorixa Trichocorixa

Trichoptera Limnephilidae

pycllopsvche Coleoptera

Psephenidae Ectopria

Dytiscidae Matus Celina

Diptera Chironomidae

CC5 6/3/98 Annelida Hirudinea

Rhynchobdellida Glossiphoniidae

Placobdella Mollusca





Copepoda Calanoida

Epischura Isopoda

Asellidae Lirceus

Arnphipoda Crangonyctidae

Crangonyx Talitridae

Hvalella Insecta

Ephemeroptera Ephemerellidae

Dannella Attenella Ephemerella

Heptageniidae Leucrocuta Epeorus

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SITE DATE CLASSIFICATION Caenidae

Caenis Odonata (Zygoptera)

Coenagrionidae Enallagma Anomalagrion/lsehnura

Plecoptera Nemouridae

Amphinemura Leuctridae

Leuetra Perlidae

Perlesta Perlodidae

lsoperla Hemiptera

Mesoveliidae Mesovelia

Ochteridae Oehterus

Coleoptera Hydrophilidae

Hvdrobius Elmidae

Stenelmis Diptera

Chironomidae

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Table 2. Summary of the macrobenthos samples taken from Hayden Creek, summer 1998.

SITE DATE CLASSIFICATION HCI 6/3/98 Mollusca

Bivalvia Sphaeracea

Sphaeriidae Musculium Pisidium


Isopoda Asellidae

Lirceus Insecta


Eurylophella Caenidae

Caenis Odonata (Anisoptera)

Gomphidae Hagenius

Odonata (Zygoptera) Coenagri onidae

Enallagma Plecoptera

Nemouridae Amphinemura

Hemiptera Gerridae

Genis Coleoptera

Elmidae Stenelmis

Diptera Ceratopogonidae

Culicoides Tabanidae

Ch,ysops Chironomidae

HC2 6/3/98 Annelida Oligochaeta

Lwnbricina Mollusca

Bivalvia Sphaeracea

Sphaeriidae Musculium


Isopoda Asellidae

Lirceus

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Table 2 (cont.). Sununary of the macrobenthos samples taken from Hayden Creek, sununer 1998.

SITE DATE CLASSIFICATION Amphipoda

Talitridae Hyalella

Decapoda Cambaridae

Orconectes rusticus Insecta

Ephemeroptera Ephemerell idae

Eurylophella Heptageniidae

Stenonema Caenidae

________----'C~a.enis


Argia ____________________--'E~nallagma

Plecoptera Perlidae

Perlesta Hemiptera

Corixidae Palmacorixa

Gerridae Ge'Tis

Veliidae Paravelia

Trichoptera Uenoidae

Neophvlax Limnephilidae

Pycnopsyche Hydropsychidae

Macrostemum Coleoptera

Elmidae Stenelmis

Diptera Empididae

Hem erodromia Chironornidae

HC3 6/3/98 Mollusca Bivalvia

Sphaeracea Sphaeriidae

Sphaerium Gastropoda

Basommatrophora Lyrnnaeidae

Lymnaea humilis

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Table 2 (cont.). Summary of the macrobenthos samples taken from Hayden Creek, summer 1998.

SITE DATE CLASSIFICATION Planorbidae

Gvraulus parvus Arthropoda

Crustacea Isopoda

Asellidae Lirceus

Decapoda Cambaridae


Ephemeroptera Heptageniidae

Stenonema Plecoptera

Perlidae Agnetina

Hemiptera Gerridae

Gerris Corixidae

Palmacorixa Trichoptera

Uenoidae Neophylax

Lirnnephilidae Pycnopsyche

Coleoptera Dytiscidae

Deronectes Laccornis

Elmidae Stenelmis

Diptera Syrphidae

Heliophilus Chironomidae

HC4 6/3/98 Armelida Oligochaeta

Lumbricina Arthropoda

Crustacea Decapoda

Cambaridae Orconectes rllsticlls


Heptageniidae Stenonema Heptagenia

Siphlonuridae

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SITE DATE CLASSIFICATION Amele/us

Ephemerellidae Serra/ella

LeptopWebiidae Paralep/ophlebia

Baetidae Bae/is Cen/rop/ilum


Amphinemura Perlidae

Agne/ina Paragne/ina

Hemiptera Saldidae GelTidae

Gerris Veliidae

Paravelia Trichoptera

Limnephilidae Pycnopsvche

Hydropsychidae Macros/emum

Uenoidae Neophylax

Coleoptera Psephenidae

Psephenus Elmidae

Promoresia S/enelmis

Diptera Tipulidae

Dicrano/a Tipula


Chironomidae HC5 6/4/98 Arthropoda

Crustacea Decapoda

Canbaridae Orconec/ers ru/sicus


Baetidae Bae/is

Ephemerellidae Serra/ella

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Table 2 (coot.). Summary of the macrobenthos samples taken from Hayden Creek, summer 1998.

SITE DATE CLASSIFICATION LeptopWebiidae

Paraleptophlebia Habrophlebiodes

Heptageniidae Epeorus Leucrocuta Stenonema

Plecoptera Nemomidae

Amphinemura Perlodidae

Isoperla Hemiptera

Veliidae Paravelia

Trichoptera Hyclropsychidae

Macrostemulll Coleoptera

Psephenidae Psephenus

Diptera Tipulidae

Dicranota Chironomidae

HC6 6/4/98 Arthropoda Crustacea

Decapoda Cambaridae



Ephemerella SipWonmidae

Siphlonurus Heptageniidae

Epeorus Leucrocuta Stenonema

LeptopWebiidae Habrophlebiodes Paraleptophlebia

Plecoptera Perlidae

Neoperla Paragnetina

Perlodidae Isoperla

Hemiptera Gerridae

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SITE DATE CLASSIFICATION Gerris


Neophylax Hydropsychidae

Macrostemum Limnephilidae

PycnopsFche Polycentropodidae

Cernotina Philopotamidae

Wormaldia Coleoptera


Elmidae Stenelmis

Halipidae Megaloptera

Corydalidae Nigronia

Diptera Tipulidae

Dicranota Chironomidae


Lumbricina Mollusca




Decapoda Cambaridae


Ephemeroptera Leptophlebiidae

Habrophlebiodes Paraleptophlebia

Oligoneuriidae Isonychia

Baetidae Centroptilum

Heptageniidae Leucrocuta Stenonema Epeorus

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SITE DATE CLASSIFICATION Plecoptera

Perlidae Agnetina

Nemouridae Amphinemura

Hemiptera Gerridae

Gerris Trichoptera

Lepidostomatidae Lepidostoma


Helicopsychidae Helicopsvche

Limnephilidae Chvranda

Uenoidae Neophylax

Coleoptera Elmidae

Promoresia Stenelmis Microcylloepus


Limnichidae Lutrochus

Diptera Simuliidae

Simulium Tipulidae Chironomidae

HC8 6/4/98 Mollusca Bivalvia


Pisidium Arthropoda

Crustacea Isopoda

Asellidae Lirceus


Hyalella Insecta


Enallagma Hemiptera

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SITE DATE CLASSIFICATION Corixidae

Palmacorixa Gerridae

Gerris Limnogonus


Bezzia/Palpomyia

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Table 3. Summary ofthe macrobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION SBI 6/4/98 Annelida

Hirudinea Oligochaeta

Lumbricina Mollusca

Bivalvia Sphaeracea






Isopoda Asellidae

Lirceus Insecta

Ephemeroptera Baetidae

Baetis LeptopWebiidae

Paraleptophlebia Habrophlebiodes

Plecoptera Perlodidae

lsoperla Nememidae

Amphinemura Hemiptera



Neophvlax Diptera

Tabanidae Hybomitra

Chironomidae SB2 6/4/98 Annelida

Oligochaeta Lumbricina

Mollusca Gastropoda

Basommatrophora Physidae

Physella gyrina Arthropoda

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Table 3 (cont.). Summary of the macrobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION Crustacea

Decapoda Cambaridae


LeptopWebiidae Habrophlebiodes Leptophlebia

Heptageniidae Stenonema


Anomalagrion/Ischnura Enallagma


Isoperla Hemiptera


Gerridae Neogerris

Trichoptera Linmephilidae

Apatania Pycnopsyche

Coleoptera Haliplidae

Peltodvtes Curculionidae Dytiscidae

Matus Elmidae

Stenelmis Diptera

Tabanidae Chrysops

Chironornidae SB3 6/4/98 Mollusca

Bivalvia Sphaeracea

Sphaeriidae Sphaerium Pisidium


Ancylidae Ferrissia tarda


Alihropoda

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Table 3 (coot.). Summary of the macrobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION Hydrachnidia

Acarifonnes Limnesiidae

Limnesia Crustacea


Hyalella Decapoda

Cambaridae Orconectes obscurus


Heptageniidae Stenonema

LeptopWebiidae Habrophlebiodes

Ephemeridae Ephemera

Caenidae Caenis

Baetidae Baetis

Odonata (Zygoptera) Calopterygidae

Calopteryx Coenagrionidae

AnomalagrionJIschnura Coenagrion


Clioperla Trichoptera

Uenoidae Neophylax

Hydroptilidae Ochrotrichia


Limnephilidae Pycnopsyche

Polycentropodidae Cernotina

Coleoptera Elmidae

Stenelmis Diptera


Chironomidae SB4 6/4/98 Annelida

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Table 3 (cont.). Summary of the macrobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION Oligochaeta

Tubificida Tubificidae

Tasserkidrilus tubifex Mollusca

Bivalvia Sphaeracea




Artlu"opoda Insecta


Serratella Baetidae

Baetis Odonata (Zygoptera)

Calopterygidae Calopteryx


Clioperla Hemiptera


Trichoptera Hydropsychidae

Alacrostemum Coleoptera

Hydrophilidae Berosus

Elmidae Stenelmis

Dytiscidae Matus


Dasyhelea Culicoides

Simuliidae Simulium

Chironomidae SB5 6/4/98 Mollusca

Bivalvia Sphaeracea

Sphaeriidae Sphaerium

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Table 3 (cout.). Summary ofthe macrobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION Gastropoda

Basomrnatrophora Physidae


Crustacea Decapoda



Ephemerellidae Dannella

Caenidae Caenis

Baetidae Baetis

SipWonuridae Ameletus Siphlonurus

Heptageniidae Stenacron Stenonema

LeptopWebiidae Habrophlebiodes


Clioperla Hemiptera



Neaphylax Hydropsychidae

Macrostemum Limnephilidae

Pycnopsyche Coleoptera

Elmidae Stenelmis


Nigronia Diptera


Chironomidae

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Table 4. Summary of the macrobenthos samples taken from White Creek, summer 1998.

SITE DATE CLASSIFICATION WCI 6/2/98 Mollusca

Bivalvia Sphaeracea




Hvalella Decapoda

Cambaridae Insecta


Enallagma Trichoptera

Limnephilidae Hydatophyla.>;

Leptoceridae Ceraclea Triaenodes

Coleoptera Noteridae

Hydrocanthus Dytiscidae

Graphoderus Agabus

Megaloptera Sialidae

Sialis Diptera

Simuliidae Simulium

Tipulidae Tipula

WC2 6/2/98 Mollusca Bivalvia


Pisidium Gastropoda

Basommatrophora Planorbidae

Gvraulus parvus Lymnaeidae

Lymnaea humiIis Physidae


Crustacea Decapoda

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Table 4 (cont.). Summary ofthe macrobenthos samples taken from White Creek, summer 1998.

SITE DATE CLASSIFICATION Cambaridae


Ephemeroptera LeptopWebiidae

Habcophlebiodes Paraleptophlebia

Baetidae Baetia

Ephemerellidae Ephemerella

Heptageniidae Leucrocuta Stenonema Stenacron Heptagenia


Aeshna Odonata (Zygoptera)

Calopterygidae Caloptervx

Coenagrionidae Anomalagrion/Ischnura


Amphinemura Perlodidae

Isoperla Perlidae

Agnetina Hemiptera

Gerridae Gerris

Trichoptera Lepidostomatidae

Lepdiostoma Odontorceridae

Psilotreta Polycentropodidae

Cernotina Limnephilidae

Goera Pseudostenophvlax Pycnopsvche Hydatophylax


Coleoptera Curculionidae Psephenidae

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Table 4 (cont.). Summary of the macrobenthos samples taken from White Creek, summer 1998.

SITE DATE CLASSIFICAnON Psephenus

Dytiscidae Celina


Nigronia Diptera

Chironomidae WC3 6/2/98 Arthropoda

Crustacea Decapoda



Caenidae Caenis

Baetidae Baetis

Heptageniidae Leucrocutia Stenonema Heptagenia Stenacron

Leptophlebiidae Paraleptophlebia

Ephemerelliidae Ephemerella


Diura Diploperla

Perlidae Paragnetina

Hemiptera Gerridae

Gerris Trichoptera

Philopotamidae Dolophilodes

Limnephilidae Helicopsychidae

Helicopsvche Hydroptilidae

Ochrotrichia Hydropsychidae

Homoplectra Sericostomatidae

Agarodes Coleoptera

Psephenidae

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Table 4 (coot.). Summary ofthe macrobenthos samples taken from White Creek, summer 1998.

SITE DATE CLASSIFICAnON Psephenus


Nigronia Diptera

Athericidae Atherix

Tipulidae Tipula

Chironomidae

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Table 5. Quantitative analysis of the macobenthos samples taken from Cripple Creek, summer 1998.

SITE DATE CLASSlFICAnON #/SAMPLE CCI 6/3/98 Annelida

Oligochaeta 26 Hirudinea 1

Mollusca Bivalvia 3 Gastropoda 7


Decapoda 1 Podacopa 6 Amphipoda 19 Isopoda 115

Insecta Ephemeroptera 9 Odonata 4 Trichoptera 9 Coleoptera 29 Diptera 116

CC2 6/3/98 Annelida Hirudinea



Isopoda 1 Amphipoda 2

Insecta Ephemeroptera 1 Trichoptera 3 Diptera 43

CC3 6/3/98 Annelida Oligochaeta 8

Mollusca Gastropoda 3

Arthropoda Hydrachnidia Crustacea

Isopoda 1 Amphipoda 24 Decapoda 3

Insecta Ephemeroptera 78 Plecoptera 25 Trichoptera 8 Coleoptera 23 Megaloptera 2 Diptera 216

CC4 6/3/98 Arthropoda Insecta

Ephemeroptera 77

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Table 5 (cont.). Quantitative analysis of the macobenthos samples taken from Cripple Creek, summer 1998.

SITE DATE CLASSIFICAnON #/SAMPLE Plecoptera 46 Trichoptera 218 Coleoptera 208 Megaloptera 5 Diptera 273

CCS 6/3/98 Platyhelminthes 9 Annelida

Hirudinea Oligochaeta 227

Mollusca Gastropoda 2

AJihropoda Arachnoida Crustacea

Isopoda 94 Amphipoda 54 Decapoda 21

Insecta Ephemeroptera 39 Odonata I Plecoptera 9 Trichoptera 2 Coleoptera 13 Diptera 281

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Table 6. Quantitative analysis of the macobenthos samples taken from Hayden Creek, summer 1998.

SITE DATE CLASSIFICAnON #/SAMPLE HCI 6/3/98 Mollusca

Bivalvia 3 Arthropoda

Insecta Ephemeroptera 8 Coleoptera 1 Diptera 55



Amphipoda 19 Copepoda 7 Isopoda 6 Decapoda 17

Insecta Ephemeroptera 70 Plecoptera 1 Coleoptera 4 Diptera 250

HC3 6/3/98 Annelida Oligochaeta 2



Amphipoda 4 Isopoda 7 Decapoda 28

Insecta Ephemeroptera 28 Plecoptera 8 Hemiptera 1 Coleoptera 35 Trichoptera 134 Diptera 123


Isopoda Decapoda

Insecta Ephemeroptera 107 Plecoptera 6 Trichoptera 40 Coleoptera 38 Diptera 32


HC5 6/4/98 Arthropoda Hydrachnidia

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Table 6 (coot.). Quantitative analysis of the macobenthos samples taken from Hayden Creek, summer 1998.

SITE DATE CLASSIFICAnON #/SAMPLE Insecta

Ephemeroptera 18 Plecoptera 3 Hemiptera 8 Coleoptera 60 Trichoptera 104 Diptera 68 Lepidoptera 1


Arthropoda Hydrachnidia Crustacea

Isopoda Insecta

Ephemeroptera 50 Plecoptera 7 Hemiptera 1 Coleoptera 53 Trichoptera 26 Diptera 26


Decapoda 4 Insecta

Ephemeroptera 109 Plecoptera 4 Hemiptera 1 Trichoptera 37 Coleoptera 81 Megaloptera 1 Diptera 583



Amphipoda 3 Isopoda 1

Insecta Ephemeroptera 2 Plecoptera 2 Coleoptera 2 Diptera 26

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Table 7. Quantitative analysis of the macobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICATION #/SAMPLE SBI 6/4/98 Annelida

Oligochaeta 19 Hirudinea 6

Mollusca Bivalvia Gastropoda


Decapoda 5 Isopoda 11

Insecta Ephemeroptera 18 Odonata 1 Plecoptera 6 Hemiptera 116 Coleoptera 23 Diptera 430

SB2 6/4/98 Annelida o Ii gochaeta 9

Mollusca Bivalvia Gastropoda


Amphipoda Isopoda Decapoda

Insecta Ephemeroptera 27 Plecoptera 10 Hemiptera 1 Trichoptera 323 Coleoptera 33 Diptera 129

SB3 6/4/98 Arthropoda Crustacea

Decapoda 24 Insecta

Ephemeroptera 73 Plecoptera 2 Trichoptera 6 Coleoptera 31 Diptera 252

SB4 6/4/98 Annelida Oligochaeta 8


Decapoda Insecta

Ephemeroptera 9 Plecoptera 1

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Table 7 (cont.). Quantitative analysis of the macobenthos samples taken from Shadow Brook, summer 1998.

SITE DATE CLASSIFICAnON #/SAMPLE Hemiptera 2 Trichoptera 23 Coleoptera 7 Diptera 902

SB5 6/4/98 Arthropoda Crustacea

Decapoda Mollusca

Bivalvia Arthropoda

Insecta Ephemeroptera 13 Trichoptera 26 Coleoptera 14 Megaloptera 1 Diptera 21 Lepidoptera 1

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Table 8. Quantitative analysis ofthe macobenthos samples taken from White Creek, summer 1998.

REFERENCES

Fahey, J. 1995. Benthic Survey of Otsego Lake Tributaries. In 28th Annual Report, SUNY Bio. Fld. Sta., SUNY Oneonta.

Harman, W. N. 1998. Handout on Leeches. Aquatic Biology 384. SUNY Oneonta. 1998.

Hewett, B. L. 1996. Water quality monitoring and benthic community in the Otsego Lake watershed. In 29h Annual Report, SUNY Bio. Fld. Sta., SUNY Oneonta.

Merritt, R. W. and K. W. Cummings. 1996. Aquatic Insects of North America. Kendall/Hunt Publishing Company. Dubuque,lA.

Peckarsky, B. L., P. R. Fraissinet, M. A. Penton, and D. 1. Conklin, Jr. 1990. Freshwater Macroinvertebrates of Northeastern North America. Cornell University Press. Ithaca, NY.

Pennak, R. W. 1989. Freshwater Invertebrates of the United States, 3rd Ed. John Wilet and Sons, Inc. New York.

macrobenthic study ofthe northern tributaries of otsego lake ......tributaries that empty into the...

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