A 11 1010GICAL STUDY or THE CONECUH-ESCAMBIA RIVE R
IN THE VICINITY OF BRE\ITON. ALARAl-I". 19%
Submitted by
E. Cli ff WebberD. R. BayneHend y S eesock
Department of Fisheries and Allied AquaculturesAgrictlltllral Experiment Stati.on
Auburn Universi.ty, labama 3h84q
DeceMber. 1986
Mike StruveFred Leslie
TABLE OF CONTENTS
INTROllUCl'ION ••••••••••••••••••••••••••• ,........................ 1
I. PHYTOPLANKTON COflHUNIT lES, CONECU H-ESCAfIB IRIVER, 1986 •••••••••• ,.................................... 5
n. HACROINVERTERRATE COHNUNlTES, CONECUH-ESCANllIARIVeR, 1986 7
HI. FlSH COHMUNITY STUDIES, CONECUH-ESC"HBIARIVER, 198~ ••••••••••••••••••••••• ,.. ••••• ••••••• ••••••••• 14
LITERATURE CITED................................................ 21
APPENDIX TABLES ,........................ 22
ii
INTRODUCTION
rhe lq86 study is the sixteenth vearlv survev of biological
productivity in the Conecllh-EsC8Qbia Rivers conduct~d by the Rivers and
Reservoirs laboratory of the Department of Fisheries and Allied
Aquacultures of Auburn University. Prlor to this study, the Institute
of Paper Chemistry of Appleton, Wisconsln had conducted lS surveys on
the stretcll of these two rivers he tween Brewton, Alab~ma and Escambia
Bay in Florid a.
The primary object"ive of these yearly studies i.s to rletermine if
P.1sjor chanp.;es in water quality due to paper 111i.11 effluents can be
detected from studies of the blotrt. During the period of low river flO',]
in late Au~ust and September, plankton, macroinvertebrates, anrt fish
populations \Jere <;ar:1pled at stations above and below the discharge froM
the Contailler Cocporatioll of America paper mill. The results of the
lq86 study are summarized in this report.
Water level in the river fluctuated significantly only once during
the sampling period. Sample stations ""ere located in the SfWle I!eneral
vicinity as those utilized ill previous surveys. The location of all
stations Are shOlvn 'in Figures 1 and 2, which are maps of the Conecuh and
Escambia Rivers. Table 1 rrovides a rlescripti.on of each station
including physical and hydrological features of each location. The
mi.leage index ~vas calclllated \Islng the Brewton Lake outfall as mile 0.0.
Stations upstream of the olitEall were assigned negati.ve distances.
I
Fi f',u r' 1, Sample S l " ( i on s I\ ill (he C.011e clIll Rive r,
Mili
. IeN
I
I rIl rcw(~n (Ir~ .. " ")/l,~f/I. . >.........~~/ ... --,-r-i ' , .' 'f' " , . .
r .' . I ~r0. : -ro ·1I
'2 ~M 'r~ urder Creek
/~~l~~, Brewton Loke [('"' If ~) Edwords
([olntofOi J!b~ I1ririschugel e go
lI'nllord ... :···· " ." '(, . (If I
~I--::~'-"-:0-..--" \'.~' ~":'rt1~ ".-........: (,
o~)
Little ~"'....---Esc:lmbi:l~ IY \..C1 5~ 6 -
Creek 1)- -'~ .,II .' - '__ ~l;l.
Fl:l.,,~ i Ie
F i)', \I I \' '
Pine Barre
Corp.
~ns3.Col3.
3
Litelc ESC3.:nbi a
Creek
J ~i cs
Table I
Description of sampling stations on the Conecuh-Escambia Rivers, lq86
~lilea~e
Index;' Station
-9.9
Location
Vicinity ofEdward's Ilridge
Current
Rapid
Location of Sample
Left bank (downstream), 500 ydsbelo\} Edwa rd' s Il ridge
-6.9
-0.3
2 In Murrier Creek,upstream from mouth
Just above Gay Lake
Just below Gay Lake
Rapid
Raoid
Rapid
Right bank of creek(d O\ms t ream)
Left bank f river(downs t ream)
Left hank of river(downstream)
o. I
1.0
3. I
5
6
7
One hundred fifty ds Rapiddownstream Conta inerCorporation Outfall
1 mile downstream RapidContaLner CorporationOutfall near Pollard
Above mouth Little RapidEscambia Creek
Right hank of river(downstream)
Right hank of river(downst ream)
Left bank of river(d O\.ns t ream)
5.7.
8.6
20. I
R
9
10
II
VicInIty of pipelinecrossing
Century Brirlge,Flo rId a
Pine Barren, Florida
Nol ino, Florida
Rapid
Rapid
Rapii
Rapid
Uostream pipelille3/4 mile, left bank(downst ream)
Upstream of bridge400 yds, right bank(downst ream)
Left hank of river(upstream), 1/2 mileup river
East side DE river
12 Cottage Hill Landing Moderate Both sides of river
*Mileage hased on Brewton Lake outfnll as 0.0. Upstream distancesexpressed as ne~1tive.
4
I. PHYTOPLANKTON CONl'lliNITIES, CONECUH-ESCANBI RIVE R, 1986
Phytoplankton saMples were collected at three stations by
preserving 500 ml of river water with merthiolate (1·leber 1973). Two
samples to/ere collected at each site, counted J identified and mean
numbers of algae reported for that location.
Previous studies of this river system have established the fact
that phvtoplankton densities are usuall. 10\01. Tvpically, riverine
habitats with morlerate to rapid flows and sudden fluctuations in water
level do not slipport dense plankton communities. ni.~ltOTTlS usual] v occur
in higher numhers in runninR waters as they are washed free from arious
substrates (logs, rocks, debris) on which they grOl'. The fact that
relrltively large numbers of green and blue-green algae \vere found in the
samnies was indicative of the runoff fro~ streamside ponels and swamps
(Table 2).
5
Table 2
Ph toplankters collected at selected stations in theConecuh-Escambia River, 21 AURust 1986
Station
A19a1 Taxa 6 12
Diatoms (Chrysophvta)
Phytoplankters/ml
PennateCentricOther
Green Algae (Chlorophyta)
FilamentousCoccoidFlagellates
BlueRreen Algae (Cyanophyta)
Fi lamentousCoccoid
Other Pigmented flagellates
Total
6
27839o
o16 l110
16137
26
787
51780
7
o245199
53
1333
8648
5
o91
140
15135
19
539
n. rl~CROINVERTEBRATF. COHHUNIT rES. CONECUH-ESCAI1B IA RIVE R, 19Rh
~1acroi.nvertebrate communities weLe again sampled to evaluate
extended-term water tlualLty above and belOlv the rlischar,e-e frol11 the
Bre"ton Hill of Container Corporation of America (CC~). This Has the
list biolog-Lcal survey f: this ri.ver system dOCllmenting long-term
effects on the benthos by oaper-making effluents from cc~.
PROCEDURES
~r[ificial substrates (plate samplers) "ere used to sample the
macroinvertebrate comnunity. This is a ~tandardized technique allowing
quantitative comparisons between locations in a river systeln like the
Conecuh-Escambia (Weber 1973). Each sampler consisted of a set of nine
3 x 3 x 1/8 lnch plexi~lass plates placed on an eve bolt and separated
by l/R i.nch-thick spacers. The upper and Im.,rer surfaces of each plate
were sanded providing a textured s [face for organism attachment. The
total surface area (exclusive DE edges) for each sampler was one square
f"ot. The plate samplers were suspended l to 2 feet belo\ol the surface
of the '''ater. Four samplers were placed at each station.
During 1986 plate samplers were placed in the river on 21 August
for a four week incubation. In retrieving a sampler, the suspending
line ,"as slo,y-Iv lifted until the sampler was just under th~ ~.,ater
surEace~ a ~ide-mouthed container was then slipped under the sampler and
the plates were held in tile container of water. The container with its
contents was stored in an ice cllest for return to the laboratory. In
the laboratory macroinvertebrates were scraped from the plates~ sieved
7
through a U.S. Standal-d No. 30 screen (0.5 mm mesh) and preserved in 70%
alcohol until they could he counted and identified.
RESULTS AND DISCUSSIO
Current aquatic studIes relating bi.ological productivity and \vater
quality still rely on benthic macroinvertebrate abundance and diversity
as an indicator of stream conditions. Additionally, macroinvertebrates
are often categorized on the basis of tllelr tolerance to a range of
environmental stresses, particularly organic enrichment. Organisms that
survive anI a narr w ranj!e of environmental strp-ss are called
intolerant forms. Organism~ that can witllstand wide fluctuations in
habitat disturhances are called tolerant. Organisms tllat CRn tolerate
occasiollal periods of stressed conditions are called partially tolerant.
This system of cla~~lEicatjon has been based Mainlv on the response of
tile organism to organic enrichment.
Tlle river bottom within the studV area was composed mostly of
sll; Etin~ sands. During periods of high water the cnrrent is swift and
the canacity Ear transDorting sand is great. This results in scouring
of the various substrates colonized by lllacroi.nvertebrates and IIsually
reduces benthic abundance. The multiple plate s~mplers allo«ed a
reasonable comparison between sample stations even though these
substrates were subjected to the scouring action of suspended sediment.
R
The macroinvertebrate fauna at e~ch station consisted mostly of
immature aquatic insects in three orders: ephemeropterans (mayflies),
trichopter?ns (caddlsflies) and dipterans (micio;es and blackflies)
(Tables 3 and 4). Standino; crops (abundance) varied widely he tween
stations. Station 5 just below the eCA outfall and station q near
Century Bridge had the highest macroinv€rtebrate densities (Table 4).
Conversely station 4 located just below Gay Lake had the lowest
macroinvertebrate density. Excluding station 4, macroinvertebrate
abundance at stations above tIle eeA outfall were similar to densities
found at stations 6-12. Th~ higher density just below the CCA outfall
may indicate nutrient enrichlnent in the river. Species richness, as
measured by the number of. different taKR, \"C:1S highest at statLon I near
Edward's Rridge (Table 3).
Hacroinvertebrate community structure consisted mostly of taxa
adapted to erosional habItats typical in a river like the Conecuh.
Examples of these taxa include mayflies (Stenonema spp., Heptagenia
spp., Caenis spp. and Tricorythodes spr.), caddisfil.es (Hydropsvche
51'1'" Cheumatopsyche 51'1'" and Oecetis sop.), beetles (Elmidae),
stoneflies (Perlidae) and ciipterans (Simulium sop. and various mid~es).
The morphological adaotations of these insects ~re related primarily to
problems of feerling and growtll rather than conceallnent from predators
and competition (Cummins lQ72).
The classification of macroinvertebrates as intolerant) partially
tolerant and tolerant was monified Erom previous reports base on
9
Table 3
Number of taxR collected at each station in theConecuh-Escambia River, 18 September 1986
Stations
Taxon 1 2 1 4 5 6 7 8 9 10 11 12
TurbelJaria 0 0 1 0 I 1 I n () 0 0 0Oligochaeta 1 1 I 1 1 1 I I I 1 0 nHirudinea n 0 n 0 1 n 0 n 0 n 0 0Ostracoda 0 0 0 0 1 0 0 0 0 n 0 (1
Amphipoda 0 0 0 0 n 0 0 0 0 0 () 1HydracarLna 1 1 0 1 0 I 1 0 I 0 1 1Ephemeroptera '; 5 5 'i 2 J 4 4 5 5 6 5Odonata 1 0 0 2 1 I 0 0 0 0 1 2Plecoptera I I 1 1 2 2 2 () 1 1 2 0"Iegaloptera I 1 I 0 I 1 I I I 1 1 0Trichoptera 1\ 5 7 5 4 6 3 6 5 10 q 6Coleoptera I 1 I 1 1 1 2 1 2 2 1 1Diptera 22 16 II 11 10 8 4 12 7 10 9 19~Iollusca 0 0 0 2 5 1 2 1 1 I I 2
Total 39 31 30 31 30 26 21 26 24 31 31 37
No. Samplers 4 3 3 4 4 3 2 4 4 3 4 I,
Taxa/Sampler 10 10 10 8 8 9 I 1 7 n 10 8 q
10
Table 4
~tajor insect orders and Flverage abllndance of ore:anisms/ft2
collected at stations i.n the Conecuh-Escambia River,IR Sep tembe r 19R6
Stations
Taxon 1 2 3 4 5 6 7 8 9 10 11 12
Epheme roptera 30 I I 19 15 51 18 30 27 27 1,4 48 38
Odonati'l 0 0 2 0 I) 0 0 2
Plecoptera 2 2 4 2 2 2 0 1 2 4 0
Hegalopteri'l 1 n 1 I) 3 0
Tr lchopte [a 191 168 173 8 87 171. 70 34 166 38 33 32
Coleoptera 3 4 1 1 2 2 2 5
01 pte ra 69 :::!l, 156 2R 708 374 175 36 382 327 274 165
Total 297 207 354 55 854 571 2RI 101 57R 414 365 242
11
Table 5
Number of taxa classed as intolerant, ~rtially tolerant andtolerant collected at st:qtions In the Conecuh-Escambia
Ri ver, lil Seotember 19i16
Station
1
2
J
4
5
7
8
9
lO
II
l2
Intolerant
2
2
5
J
2
J
4
h
J
Partially Tolerant
26
21
21
19
16
12
20
16
20
22
24
12
Tolerant
8
6
J
J
4
1
2
2
o
4
additional information regarding certain genera (Georgia Water
Quality Control Board 1972; lVeber 1973; Hilsenhoff 1977). Addltionally
scation 1 had the Most insects classified as tolerant, whereas stations
to and 11 had the most intolerant insect taxa present (Table 5).
In summary, the plate samples did not reveal any deleterious
effects of Container Corporation of ~merica effluents on benthic
macroinvertebrates in the ConeclIh-Esc.ambia River. The 80pendix includes
tables listing all macroinvertebrates collected at each station along
with their tolerance classification and average density.
13
Ill. FISH COmlUNITY STUDiES, CONECUH-ESCAHBIA RIVER, IQS6
Th~ same sites sampled durin~ previous studies, above Edward's
Rridge and below Pollard Landing, were electrofishecl on 18 September
lQS6. Catch data are presented for each station in Tables 6 and 7.
Both sampling sites \"rere electroflshed for Eorty-five l'1i nutes. At
Edward's Bridge 268 fish were captured representing 21 species from In
families. At Pollard Landing a total of 227 fish representing is
sppcies from 11 families were cRptllred. S yen species of sport fishes
(Centrarchidae) l4ere collected at Edl4ard' s Bridge and five species at
Pollard Landing. Fifty-four centrarchids l4eighin~ a total of 2.0 kg
\vere captured at EdwArd's Bridge and 3q centrat-chjds l"elghing a total of
2.0 kg were collected at Pollard Landing. Numerous ynung-Qf-the-year
centrarchids were pl~esent at bOI:h locatlons.
Diverse and apparently healthy fish conmuniti s existed at both
sampling sites during the 1986 study. Based on these data, there is no
evidence of adverse impAct on fish cOMmunities below the cc~ outfall.
Table 6
Electrofishing data collected during forty-five mjnutes of shocking Inthe Conecuh-Escambia River near Edward's Bridge, IB September 1986
Species
Lepisosteidae (gar family)Lepisosteus oculatus (spotted gar)
Clupeidae (herring family)Dorosoma cepedianum (gizzard shad)
Number
2
1
Length( cm)
3853
26
\,eight(grams)
78502
laJ
Cyprinidae (minnow familv)Notropis longirostris (longnose shiner) 2
24
No tropis texanlls (weed shi ne r) 67
Notropis venustus (blacktail shiner) J75026Iq
8
Carostom:idae (Slicker family)Carpiodes velifer (highEln carpsucker) 16
15
4/ea5/ea5/ea
5/ea5/ea7
'ilea51ea6/ea7 lea8/eaq
16161617181920222727272q
292
.5/ea
.7 leaIlea
1 lea2/ea3
.il/eaIlea2/eaJ/ea4 lea6
48545559729096
[242142602772a3J27348
Table 6 (continued)
Length l;eightSpecies Number (em) (~rallls)
30 35736 521
Hoxostoma Doecilurum (blacktail 9 6 2red horse) 7 3
8 4l8 58
2 19/ea 69/ea20 7520 792J 9122 9838 493
Ie talu rid ae (freshwater catfish family)Ictalurus punctatus (channe I catflsh) 30 209
Pvlodictis olivari.s (flatheAd catfish) 2 25 l4027 l7R
Atherinidae (silverslde family)Labidesthes sicculus ( brook 1 5 .5
sil verside)
Centrarch idae (sunfish family)AmblopIi tes rupestris ( rock hass) [9 132
Lepomis macrochirus (bllleglll) 3 7 611 16l2 29
2 14/ea 46/ea
Lepomis negalotis (longear sunfish) 6 4/ea l/ea5 2
2 6/ea 4/ea2 7/ea 5/ea7 8/ea 7/ea6 8/ea 9/ea2 9/ea 10/ea
l6
Table Ii (continued)
Length WeightSpecies Number (cm) (grams)
8 9/ea 13/ea2 [Olea 16/ea
12 3314 5316 93
Lepomis microlophus (redear sunfish 3 11 17shellc racked 20 143
23 243
Hicropterus punctulatus (spotted bass) 1 12 17
~1icropterus salmoides (largemouth hass) 4 18 6021 12923 14527 247
Pomoxis nigromaculatus (black crappie) 1 27 257
Percidae ( perch family)Percina caorodes (logperch) 1 9 5
Percina nigrofasciata ( blackbancted 2 4 lea .6/eadarter) 3 51ea l/ea
7 3
'hgilidae (mulle t family)'lugil cephalus ( strioed mullet) 2 )(, 598
42 889
Soleidae ( sale fami.ly)Trinectes maculatus (hogchoker) 3 5 3
6 3r, 5
3 7lea 7/ea2 7lea 8/ea
17
Table 7
Electro[LshLng data collected during forty-five minutes of shocking inti,e Conecuh-~scambiaRiver near Pollard Landing, lR September 19R6
Species
Lepisosteidae (~ar family)Lepisosteus oculatus (spotted gar)
Amiidae (bowfin family)Amia calva (bowfin)
Numher
3
Length(em)
424648
42
"eight(grams)
262349393
818
Anguillidae (freshwater eel family)Anguilla rostrata (American eel) I
Cyprinidae (minnow family)Notropis longjrostris (longnose 2
shiner)
Notropis texanus (\"eed shiner) 1817
Notropis venustus (blacktail shiner) 4iO343613
33
3
Catostomidae (sucker family)Carpiodes velifer (highfin carpsucker) 8
3
Moxostona poeciluruQ (blacktail 6redhorse) 2
Iii
55
s/ea
S/ea6/e~
4/eaS/eaS/ea6/ea7 leaR/eaR/ea9
10/ea
1619/ea192022252R3031
89/ea
3SR
Ilea
I lea2/ea
.7 lealIea2/ea2/ea3/ca4/eaS/ea6
10/en
5193/ea
100101169196343395435
56/ea
Speeics
Table 7 (continued)
Numher
22
Length( cm)
10/ea10/ea2022243239
Height(grams)
9/ea12/ea90
LIO1503';3689
Ictaluridae (freshwater catfish family)Pylodictis olivaris (flathead catfish)
Cyprinodontidae (killifish family)Fundulus olivaceous (blackspotted
topminnow)
Centrarchidae (sunfish family)Lepomis macrochirus (bluegill)
Lepomis megalotis (longea. sunfish)
Lepomis microlophus (redear sunfishshellcracker)
Micropterus punctulatus (spotted bass)
19
5
1
25
2.3554
2
2
713161722
5/ea1112L516IR
5/ea7/ea9/ea
IO/eaL21214II,
L523
10Ll
5254653
113
4
Ilea24285381
130
2/ea6/ea
14/"a17/ea29315267
58274
817
Specles
Table 7 (continued)
NumberLength
( em)\,eight(grams)
Hicropterus salnoides (largemouth bass) 9 8 S9 89 10
10 I lII 1617 7424 17730 12131 J6J
Percidae ( perch family)Percina nigrofasciata ( blackbanded 2 Slea Ilea
darter) 2 S/ea 2/ea2 olea 2/ea
7 1
t1ugi I idae (mullet family)Hugil cephalus (striped mullet) 19 714
Soleidae (sale family)Trinectes maculatus (hogchoker) 2 8 8
8 10
20
Cummins, K. \.J.Oglesby, R.Ecology andNe\v York.
LITERATURE CITED
1972. What is a River?--Zoological Description. In:T., Carlson, C. A., and NcCanll, J. A. (Ed,;;.), RiverMan. 465 pp., pp. }}-51. Academic Press, London and
Georgia Water Quality Control Roard. 1972. Chattahoochee River BasinStudy. Ga. I'tr. Qual. Cont. Bd., .\tlanta, GA. 206 pp.
Hilsenhoff, I,. L. 1977.streams. TechnicalResources, Nadisol1,
Use of arthropods to evaluate water quality ofllulletin No. 100, Department of NaturalIH.
I,eber, C. l. (Ed.). 1973. lIiological field and laboratory methods [ormeasurinS?; the quallty of surface waters and effluents .. U.S.Environmental Protection Agency, Washington, nco
21
APPENDIX TARLES
22
Table 8
Benthic maccolovertebrates collected from plate sample rs in theConecuh-Escambia River near Ed\.Jard l s Bridge (S ta tion 1) •
18 September 1986
1'lal:e SamplerReplicate
AveragzTaxon Tolerance A B C D :IIa./ft
Oligochaeta T 5 2 3 3 3
Hyd racarina 1'T 1 0 0 +:';:
EphemeropteraIJnidenti fied 9 0 3Baetidae
Baetis spp. 1'T 0 0 10 0 3Unidentlfied 4 0 I) 8 3
CaenidaeCaenis spp. PT 21 14 1 4 LO
Heptagen l idaeStenonema spp. PT 3 5 3 3
OligonenriidaeIsonychia spp. I 3 0 () 0 +
TricorythidaeTricorythodes spp. 1'T 10 LO 1 6 7
OdonataCoenag-rionidae
I\rgia spp. PT 0 0 i) +
PlecopteraUnidentified I) I) 0 I +Peridae
Unidentified I) 0 0 +
NegalopteraCorydal id ae
Corvdalus cornutus PT 0 2 0 0 +
Tei chopteraUniden U fied 1 I) 0 0 +lIyd ropsychldae
Cheumatopsyche spp. T 3 I) I) 1 IHacronema spp. I 4 4 1 1 3Unidentif il~J 8~ () 194 393 168
23
Table 8 (con ti nuec1)
Plate SamplerRe plica te
Taxon Tolerance C DAverav,Z
A B No.jft
HydroptilidaeHyd roptila spp. PT 6 I 4 3
LeptoceridaeNectopsyche candida PT 0 0 I 0 +Nectopsyche spp. PT 20 I 0 0 5Oecetis sp. PT J 2 5 l J
PolycentropodidaeNeu recli psis spp. T 1 13 4 0 5
Pupa I 0 0 0 +
ColeopteraElmidae () 2 0 0 +Adults I J l J 2
DipteraChi ronomidae
Ablabesmyia para ;anta PT 3 0 0 0 +Anatopynia sp. America 0 0 2 0 +Chironomus spp. T 0 0 2 0 +Cladotanytarslts spp. 0 lJ 0 0 JConchapelopia spp. PT 0 ? 0 2 ICorynoneura spp. PT 9 7 5 5 7Cricotopus bicinctus T J 2 J 0 2Cricotopus sp. I PT 3 0 3 2 2Cryptochironomus fulvus PT 0 2 0 0 +Dicrotendipes lobus T 0 2 2 2 2Glyptotendipes spp. T 0 () 2 0 +Nanocladius spp. PT J 0 J 2 2Nilotanypus 5pp. PT 6 0 2 0 2Nilothauma spp. PT J 0 0 0 +Orthocladinae J 7. 2 2 2Parachironomus monochromus PT 0 0 2 0 +Pentaneura sp. PT 0 0 2 0 +Polypedilum convictum PT 14 2 0 5 5Pseudochironomus spp. T 3 0 0 0 +Rheotanytarsus spp. PT 14 5 R l5 11
24
Tahle 8 (continued)
Plate SamplerReplicate
Taxon Tolerance A B c DAverag2No./ft
Tanytarsus spp.Thienemanniella spp.
AdultsPupaSimuliidae
Simulium spp.Pupa
Total NumberlS mpler
PTPT
PT
] 5 R 7 66 4 5 17 82 2 1 ] 21 2 2 ] 2
5 0 1 0 20 1 0 0 +
251 120 283 491 287
?*Indicates less than one organism/ft-.
25
Table 9
Benthic macro invertebrates collected from plate samplers in theConecuh-E scamb La River in '1urder Creek (Station 2) •
[R September [986
Plate SamplerReplicate
Avera gzTaxon Tolerance A B C D* No./ft
Oligochaeta T 1 1 9 4
Hydracarina PT 0 2 f) +,,,',
Epher:1eropte raUnidentified 3 0 1RA.etidae
Unidenti fied 0 2 1Caenidae
Caenis spp. PT f) () +Heptagenlldae
Stenonema spp. PT 2 9 8 6Oligoneuriidae
Isonychia spp. 1 0 0 +T r icoryt hidae
Tricorythodes spp. PT 0 +
PlecopteraUniden ti fled 0 0 +Peridae
Acroneuria spp. 1 2 0 0 +
~1egaloptera
CorydalidaeCorydalus cornutus PT 1 1 2
TrichopteraBrachycentridae
Brachycentrus spp. PT 0 0 +Hyd rops ychidae
Cheumatopsyche spp. T 4 0 2 2Hyd ropsyche spp. PT 14 14 18 15IJniden tH led 124 154 [(,2 147
Hyd roptil idaeIlvd roptila spp. PT 0 +
26
Table g (contlnued)
Plate SaMPlerRepllcate
TcJXDn Tolerance A B C D*AveragzNo./ft
Leptocerldaeecetis sp. PT 0 2 2 1
Pupa 1 2 1 1
ColeopteraElmidae l
Di pte raChi ronoPlidae
Ablabesmyia parajanta PT 0 1 0 +Chironomus spp. T 0 1 0 +Conchapelopia spp. PT 0 l 0 +Corynoneura spp. PT 0 0 1 +Cricotopus btcinc tus T 0 0 l +Cricotopus sp. I PT 0 0 l +Glvptotentipes spp. T 0 0 1 +Nanocladius SPp. PT 2 l 10 4Nilotanypus spp. PT 0 0 2 +Nilothauma spO· PT 0 0 1 +Orthocladiinae 0 0 1 +Parachironomus monochromus T 1 0 0 +Polypedilum convictum PT 1 J 2 1Polypedilum spp. PT 0 0 l +Rheotanytarsus spp. PT 2 1 2 2Thienemanniella spp. PT 1 0 5 2
Adults J 0 0 +Pupa 1 0 0 +Simuliidae
Si.mulium spp. PT 0 J 3 1
Total Number/Sampler l63 200 240 201
i,p late sampler lost.?
1'0'. Indica tes less than one organism/ft- .
27
Table 10
Benthic oacroinvertehrates collected f l-om plate samplers in theConecuh-E scamhi a River just above Gay Lake (Station 3) ,
18 September 198(,
Plate SamplerRepl icate
AveragzTaxon Tolerance A B C D", No./ft
Turhe llarta PT 0 0 I +~';~':
Oligochaeta T 1 2 3 2
Ephemeropt raUnidentified 0 1 3 1Baetidae
Baetis spp. PT 0 2 0 +Unident lEi.ed 3 0 15 r,
CaenidaeCaenis sop. PT 2 r, 2 3Heptageniidae
Stenonema spp. PT 3 3 6 401 i.goneur iidae
Isonychia spp. I 2 0TI· i.corythidae
Tricorythodes spp. PT 4 1 3 3
PlecopteraUnidentif led 0 0 +'?erlidae
A.c coneu ria spp. I I 0 0 +Neope rla s PI" I 0 1 0 +Paragnetina kansensis I 0 I 0 +
'IegalopteraCorydalidae
Corydallls cornutus PT 0 0 3
TrichopteraHydropsychidae
Chellmatopsyche spp. T 5 4 5 5Hyd ropsyche spp. PT 29 53 31 38~!ac ronema spp. I 2 4 1 2Unidenti Eied 60 15 I 152 12 I
28
Table 10 (continued)
Plate SamplerRepl icate
Taxon Tolerance A B CAveral'\~
No. / Et-
HydroptilidaeJlydroptila sop.
LeptoceridaeCeraclea spp.Oecetis sp.Unid en tif ie
Polycentropodidae~eureclipsis spp.
Pupa
PT 1
PT 0 2 l lPT 0 1 0 +
0 0 l +
T 3 I 01 4 1 Z
ColeopteraElmidaeAdults 2 o o +
Di.pteraChi rononid ae
Conchapelopia spp.Corynoneura spp.Cricotopus sp. tEukiefferiella sp.Nilotanypus spp.Polypedilum convictumRheocricotopus spp.Rheotanytarsus spp.Tanytarsus spp.Thienemanniella spp.
AdultsPupaSimuliidae
Simulium spp.Pupa
Total Number/Sampler
PTPTPTPTPTPTPTPTPTPT
PT
0 0 3 10 0 3 l0 2 3 20 2 0 +0 2 0 +5 1 l 19 120 2 0 +5 20 37 2l1 4 3 37 7 9 80 1 +2 2 3 2
54 15 200 906 2 29 12
119 308 540 322
*Plate saMpler lost.?
:':~:lndicates less than one organlsm/ft-.
29
Table 11
Renthic macroinvertebrates collected from plate samplers in theConecuh-Escambia River just below Gay Lake (S tation 4) ,
If! September 1986
Plate SamplerReplicatp
AveragzTaxon Tolerance A B C D No./ft
Oligochaeta T 1 1 0 +*
Hydracarina PT 0 0 0 1 +
CrhemeropteraHniden ti fied 2 1 3 2Baetidae
UnidentIfied 3 0 1 4 2Caenictae
Caenis spp. PT 6 2 0 2Heptae;eniidae
Stenonema spp. PT 0 0 2 0 +01 Lgoneuriidae
Isonychia spp. I 0 a 2 a +Tricorythidae
Tricorythodes spp. I'T 5 18 4 7
OdonataCoenagrionidae
Argia furnipennis PT 0 a 0 +Hac romiidae
lacromia spp. I 0 1 0 0 +
PlecopteraPerlidae
Acroneuria spp. I 0 1 0 3
Tr ichopteraUniden tifled 2 a 1 a +lIydropsychidae
Hyd ropsyche sop. I'T 1 0 0 1 +Unidenti fied a a 3 0 +
HydroptilidaeHydroptila spp. PT 1 0 a a +
30
Table 11 (continued)
Plate SamplerReplicate
Averag,Taxon Tolerance A B C D No. /ft-
LeptoceridaeNectopsyche sop. PT 1 0 [) 0 +Oecetis spp. PT 0 0 1 1 +
PolycentropodidaeNeureclipsis spp. T 3 0 0 0 +UnidentLfied 0 0 1 0 +
ColeopteraElm ldaeAdults [) n 0 +
DipteraChironomidae
Chironomini [) [) n +Cladotanytarsus spp. 4 2 2 3 3Conchapelopia sop. PT 0 0 1 0 +Corynoneura s pp. PT 2 0 1 1 1Cricotopus remus PT 1 0 0 0 +CricotoPllS sp. I PT 0 2 [) 0 +Dicrotendioes spp. T 0 2 0 0 +Nanocladius spp. PT 12 II 0 2 6Polvoedilum convictum PT 1 0 4 1 2Polvoedilum halterale PT 1 0 0 0 +Rheotanytarsus spp. PT 2 0 f, 11 2Tanytarsus spp. PT 6 [) 1 0 2Thienemanniella spp. PT 0 2 5 0 2
Adults 3 3 11 I 2Pupa 2 1 1 [) 1Simul iirlae
Simulium spp.Pupa 0 0 [) +
31
Table II (continued)
Plate SamplerReplicate
Taxon Tole ranee A B c DAvera gzNo./ft
MolluscaGas t ropoda
P lanorbidaeGyraulus spp.
PhysidaePhysa sop.
Total Number/Sampler
*lndicates less than Olle organism/ft 2 •
32
f) 0 0
o 0 a
58 35 57 23
+
+
43
Table 12
Benthjc macroinvertebrates collected from plate samplers in theConecuh-Escambia River .i ust below the CCA outfaJI (Station 5) ,
113 Septemer 1986
Plate SamplerReplicate
Avera!,,,Taxon Tolerance A B C D No./ft-
Tu rbe 11ari a 0 0 54 28 21
Oligochaeta 1'1' 76 128 4 20 57
HirurlineaGlossiphoniJ dae T 0 0 0 4 I
Os t racod a 0 0 26 79 26
EphemeropteraVniden tif led 32 28 0 f) ['j
Ca.:nidaeCaenis spp. pT 30 [4 [ [ [4
TricorythidaeTricorythodes spp. PT 28 48 9 I, 22
OdonataCorduliidae
Neurocordulia molesta 0 0 0 +,'l'
Plecopte raPerlidae
Acroneuria spp. I 0 0 0 +Neoperla spp. I 1 4 [
Nef';alopteraCorydalidae
Corydalus cornutus PT 0 0 +
TrichopteraHydropsychidae
Hydropsyche spp. pT 22 1 0 0 6Leptoceridae
Nectopsyche spp. 1'T 4 0 0 0 1Oecetis sp. PT 8 0 0 0 2
33
Table 12 (continued)
Pla te SamplerReolicate
AveragzTaxon Tolerance A '3 C 0 No./ft
PolycentropodidaeNeurecliosis spp. T 43 157 47 61 77
Pupa 0 I 0 0 +
Coleop teeaElmid ae n I n 5 2Adults 4 3 () I ~
DipteraPupa 4 0 a aCeratopogonidae
Palpomyia spp. PT () a () 4 IChi ronollri dae
Ablabesmyia parajanta PT 213 228 56 143 160Chironomus spp. T l2~ l14 63 hi 92Clinotanypus spp. 0 0 7 a 2Cryptochironomus rulvus PT 43 a () 20 16Cryptochironomus spp. PT 0 a 0 20 5Glyptotendipes spp. T 43 0 28 a 18Nanocladius spp. PT 171 38 0 0 52Parachlronomus monochromus PT 341 571 14 246 293Polvpedilum balterale PT 43 a a 20 16Tanypodinae 43 0 0 n II
Adults '1 n n 4 IPupa 60 92 12 4 42
~lolll1 scaGastroporla
Ancyl idaeLaevapex spp. a a 0 4 I
Phvs idaePhysa spp. 0 4 29 39 IS
34
Table 12 (continued)
Plate SamplerReplicate
Taxon Tolerance A B c DAverag~
No./ft-
PlanorbidaeGyraulus spp. 4 0 0 0
Unidentified 0 1 0 0 +
Pe l"cypoda I, 0 5 0 2
Total Number/Sampler 1346 1434 355 779 979
?,':1 ndlcates less than one organism/ft-.
15
Table 13
Benthic macroinvertebrates collected from plate samplers in theConecuh-Escamhia River one nile ciownstream from the eGA outfall
(Station 6), 18 September 1986
P late SamplerReplicate
Taxon Tolerance A B CAverag,No./ft-
Tli rbe 11ari a
Oligochaeta
Hyd rae rina
EpheoeropteraUnidentifiedCaenidae
Caenis spp.Heptageniidae
Stenonema spn.Tdcorythidae
Tricorythodes sop.
PT
T
PT
PT
PT
PT
0 0 +:',:':
5 0 8 I,
0 0 9 3
4 I, 0 3
0 1 0 +
1 2 0 1
3 17 20 13
OdonataCordliliidae
Neurocordulia molesta
PlecopteraPerlidae
Neooerla sop.Paragnetina spp.
~Iegaloptera
CorydalidaeCorydalus cornutus
II
PT
o
o1
1
1
no
o
o
Io
1
+
++
+
Trichopte l~a
Brachycen t ri.d aeBrachycentrus spp.
Hyd wpsychid aeCheliMatopsyche spp.Hydropsyche spp.Unidentified
I
TPT
36
3 0
1 034 20
152 245
o
o1432
Table l3 (continued)
Plate SamplerReplicate
Taxon
LeptoceridaeCeraclea spp.Oecetis sp.
Polycentrnporllrlae~eureclipsis spp.
Pupa
Tolerance
PTPT
T
A
o1
oo
lJ
11
o1
C
o8
2o
Averaf!.'iNo./ft-
+3
++
ColeopteraDytiscidae o o 1 +
DipteraChi ronomid ae
Chironomus sop.Conchapelopia spp.Nanocladius spo.Parachironomus monochromusPolypedilum convictumRheotanytarsus spp.Thienenanniella SpOe
AdultsPupaStmul i i.dae
Sinulium spp.Pupa
TPTPTPTPTPTPT
PT
o 14 I)
8 0 2059136199o 0 20
1713615993 54 8025 0 20o 0 8
11, 24 8
14 to 01 2 I)
59
1317
1047615
315
81
HolluscaGastropoda
l\ncylidGleLaevapex spp. o o +
Total Number/Sampler
*Plate sampler lost.**lndicates less than one organism/ft 2 .
37
437 670 611 573
Table I'
Renthic macroinvertebrates collected from plate samplers in theConeclIh-Escambi.a River above mouth of Little Escambi a Creek
(Station 7), IR September 1986
Taxon
Turbellaria
Oligochaet;'l
Hydracarina
EphemeropteraUnidentifiedBaetidae
llnidenti fledCaenidae
Caenis sop.H pt agen U dae
Stenonema spp_Tricorythldae
Tricorythodes spp.
Plate SamplerReolicate
Ave rag,Tolerance A B c* D~: No./ft-
PT 0 2
T 7 4 6
PT 1 0 +i:'!':
0 3 2
16 R 12
PT n +
PT 6 9 8
PT 6 8 7
PlecopteraPerlidae
Attaneuria ruralisParagnetina spp.
tlegalopteraCoryda lldae
Corydalus cornutus
TrichopteraBrachycentridae
Rrachycentrus spp.Hydropsvchidae
Hvdroosyche SOD.Leptoceridae
Oecetis sn.
II
PT
I
PT
PT
38
oo
I
1
48
11
1
Q
88
o
++
1
+
68
+
Table 14 (continued)
Plate SaMplerReplicate
Taxon
ColeopteraElmidaeAdultsGyrinidae
Dineutus spp.
Tolerance
I
A
II
I
B
1o
o
Ave ra!(ZNo./ft
I+
+
DipteraChi ronolllidae
Polypedilurn convictumRheotanytarsus spp.Thienemanniella spp.
AdultsPupaSimul i. idae
Simulium spp.Pupa
PTPTPT
PT
25 f\7 5645 87 6660 7 34
1 0 +7 2 5
14 10 120 2 I
HolluscaGastropoda
Ancyl idaeLaevapex spp.
PhysidaePhvsa sop.
Total Number/Sanpler
*Plate sampler lost.**Indicates less than one organism!ft 2 .
39
o
o
243 323
+
+
283
Table 15
Benthic macroinvertebrates cOllec ted from plate sample rs in theConecuh-Escambia River three-folll'ths mile upstream of the
Pipeline Crossing (Station 8), 18 September 1986
Plate SamplerReplicate
AveragzTaxon Tolerance A B C D No./ft
Oligochaeta T 0 3 5 2
EpheflleropteraUnidentifled 2 0 0 4 2Bqetidae
Unidentified 0 2 8 3Caenidae
Caenis spp. PT 0 0 2 +--,
HeptagenlLdaeStenonema spp. PT 8 17 3 7 9
Tri cory t hid a eTricorvthodes spp. PT 13 16 5 14 12
Hegalopte,-aCorydal idae
Corydalus cornutus PT 1 0 0 0 +
TrichopteraUnidentified 6 0 0 0 2Bra chycellt r idae
Brachycentrus spp. I I) I) I) +Hydropsychidae
Cheul'latopsyche spp. T I) I) I) I +Hydropsvche spp. PT 3 0 1 2 2lInid en t l tied 12 31 2 44 22
LeptoceridaeNectopsvche candida PT 0 0 2 0 +Nectopsyche spp. PT 1 0 2 0 +Oecetis sp. PT 1 2 I) 1
PolycentropodidaeNeureclipsis spp. T 4 1 3 0 2
Pupa 0 0 I 0 +
40
Table l5 (continued)
Plate SamplerReplicate
AveragzTaxon Tolerance A B C [) No./ft
ColeopteraElmid ae 0 [) 0 l +Adults 1 0 0 5 ~
[)ipteraChi. ronoloidae
-\blabesmyia parajanta PT 3 (1 0 0 +Chi ronomi ni 0 0 2 n +Chironomus spp. PT 0 2 0 2 1Corynoneura spp. PT 5 0 3 0 2Nanocladius spP. PT 2 2 [) 11 1Nilotanypus spp. PT 2 0 [) n +Nilothauma spp. rT [) 0 [) 2 +Pentaneura spp. PT 0 0 2 0 +Polypedilum convictum PT 2 2 2 11 4Rheotanytarsus spp. PT 7 13 7 16 11Tanytarsus spp. PT 0 5 3 5 3Thienemanniella spp. PT 3 ~ 5 9 5
Adults 0 0 0 2 +Pupa 1 l 2 2 2Simuliidae
Simulium spp. PT 2 (1 0 0 +
HolluscaGastropoda
AncylidaeLaevapex spp. 1 8 [) 3 3
Total Number/Sampler ill 107 53 l41 96
?:<:Indicates less tlldn one organism/ft-.
41
Table 16
Benthic mac ro inve rte bra tes collected from plate samplers in theConecuh-Escambia River jus t upstream of Century lIridge
(S tation 9) , IB September I QS6
Plate SamplerReplicate
AveraglJTaxon Tolerance A II C D No./ft"
OlLgochaeta I J 2 2 S 4
Hydracarina PI 3 5 0 2 3
EphemeropteraUnid en tlf ied 7 0 0 0 2Baetidae
Unident Lfied 5 0 2 4 3Caenidae
Caenis spp. PT 1 0 2 0 +~.{
Heptageni LdaeS tenonema spp. PT 15 6 0 4 6
01 ig onelj r i.irlaelsonychia spp. I 0 I 0 0 +
TricorythidaeTricorythodes snp. PT 8 17 3 29 14
PlecopteraPe rlidaeUniden ti fLed 1 0 0 0 +
HegalopteraCorydalld ae
Corydallis cornutus PT 1 2
TrichopteraHvd roosychid ae
Chellmatopsyche spp. T 0 J 0 0 +Hydropsyche spp. I' 13 22 27 45 27Uniden t Lfied 113 120 72 220 131
Hyrl roptil idaeHydroptila spp. PT 2 LL 0 J 4
42
Table l6 (continued)
Plate SamplerRepl lca te
ToleranceAverag2
Taxon A B C D No./ft
LeptoceridaeCeraclea sop. PT 2 0 0 0 +Oecetis sp. PT 0 2 0 0 +
Pupa 0 2 l 2 1
ColeopteraDytiscidae 0 () 0 2 +Elmi.daeAdults 0 0 0 +
DipteraChi. ronomidae
Euki.ef feri.ella spp. PI 14 12 21 26 18Nilotanypus s Pl" PT 0 0 () 13 3PolypediluM convictum PI 233 146 1"6 211 194Rheocricotopus spp. PT 0 () 10 0 3Rheotany t a rSllS spp. PT 82 L34 2l 26 66Tanyt a rsini 14 0 0 0 4Thienemanniella spp. PT 0 0 21 51 t9
Adults 0 2 0 I +Pupa 4 4 2 10 5Simul lldae
Simulium spp. PT 66 102 4 96 67Pupa 1 6 0 2 2
fl.folluscaGast ropoda
AncylidaeLaevapex spp. 1 2 () 2
'fatal Number/Sampler
7*Indicates less than Qile organism/ft-.
41
5R9 600 17 76t 582
Table 17
Benthic macroinvertebrates collected from plate samplers in tIleC:onecuh-Escambia River at Pine Harren, Florida (Station LO))
tR September 19~6
Plat" SamplerReplicate
Taxon
Oligochaeta
EphemeropteraUnidentifiedBaetidae
Uniden tiE ledCaen i.dae
Caenis spp.Heptag niidae
Stenonema spp.01 igoneur i.idae
Isonychia spp.Tricoryr hidae
Tricorvthodes spp.
PlecopteraPedidae
Neopeda spp.
HegalopteraCorydalid ae
Corydalus cornutus
Trichopte raBrachycentridae
Brachycentrus spp.Hyd ropsychidae
Cheumaropsyche spp.Hydropsyche spp.Hacronema spp.UnldentiEied
Hvdropti lidaeHvdroprila 51'1"
Tolerance
T
PT
PT
I
PI
I
PI
I
TPTI
PT
44
3
5
18
5
1
2
2
2
2
o2
II5
o
B
o
5
to
t8
6
9
5
o
310
724
1
C
o
o
1
25
10
o
t4
o
1
(]
o27
16
I)
AveragiNo. / ft
3
5
20
7
+
2
1
158
15
+
Table 17 (continued)
Plate SamplerReplicate
Averag2Taxon Tolerance A B C D-;'-r No./ft
Leptoceri.daeCeraclea spp. PT 0 I 0 +Nectopsyche spp. PT 2 5 0 2Oecetis sp. PT 1 1 0 +Oecetis spp. PT 1 1 0 +Adult 0 1 0 +
PhilopotamidaeChimarra spp. I 0 1 0 +
ColeopteraElmidae 0 +Gyrinidae
Dineutus spp. I 0 0 +
DlpteraChi ronomid ae
Ablabesmyia parajanta PT 6 0 0 2Conchapelopia spp. PT 6 13 0 6Corvnoneura spp. PT 0 () 5 2Cricotopus sp. I PT 6 0 0 2Nanocladius spp. PT Ij 13 0 6Polypedilum convictum PT 57 147 45 83Rheotanytarsus s pp. PT 44 161 27 77Tanypodinae 0 0 5 2Tanytarsus spp. PT 0 0 5 2Thienemanniella spp. PT 38 0 32 23
Adults 0 0 9 3Pupa 5 9 4 6Simuliid ~e
Simulium spp. PT 39 231 48 106Pupa 2 19 0 7
45
Table [7 (continued)
Plate SamplerReplicate
Taxon
!1011uscaGastrop da
Ancyl idaeLaevapex spp.
Tolerance A
o
B
1
c
o
D*Averagf)'1o./ft-
+
Total Number/Sampler
*Plate sampler lost**lndicates less than one organism/ft 2 .
273 706 256 412
Table 18
Ben thi.c rna c ro inve r te brrt t es collected froPl plate s.:t.mplers ill theConecuh-Escambia River at Nalina, Flori.da (Station 11 ) •
18 September 198(,
Plate SamplerReplicate
AveragTaxon Tolerance A B C D No.!ft-
Hyd racarina PT 0 2 4 I) 2
EphemeroPteraUnidentif ied 2 8 2 3Baetidae
Baetis spp. PT 0 30 0 0 8Uni.dentified 21 0 8 1.8 12
CaenidaeCaenis spp. PT 21 10 16 12
Heptagen LidaeHeptagenia spp. PT 0 3 0 0 +"Stenonema spp. PT 5 3 0 3 3Unidentified 0 ] 4 I) 2
OligoneuriidaeIsonychia spp. I 0 2 0 2
T r ie Drv t hidaeTricorythodes spo. PT 4 4 12 4 6
OdonataZygoptera 0 0 0 +
PlecopteraUnidentified 0 0 6 I) 2
Attaneuria ruralis I 0 I) 1 0 +Neoperla spp. I 0 0 0 l +
~·Iegalopte raCorydalidae
Corydaills cornutus PI 0 7 2 ]
TrichopteraUnidentlE ied 0 0 4 0Brachycent ridae
Brachycentrus spp. I 1 0 0 2 +
47
Table 18 (continued)
Plate SamplerReplicate
AAveragz
Taxon Tolerance B C D No./ft
HydropsychidaeHydropsyche spp. PT 10 i 1 i 6Hacronema spp. I 4 4 2 5 4UnidentifLed 12 15 8 12 12
Hyd ropti 1 idaeHyd roptila spp. PT a 6 0 4 3
LeptoceridaeCeraclea spp. PT a a a 2 +Nectopsvche spp. PT 0 0 0 1 +Oecetis sp. 1'T 0 1 0 1 +Oeceti.s spp. PT 2 0 0 a +
Philopa tamid aeChi.marra spp. I 0 5 2
ColeopteraElmid ae 3 0 0 I 1Adults 0 0 4 1 1
DipteraChi ranomid ae
'\blabesmyia para.ianta PT 0 4 0 0 1Nanocladius spp. PT 0 12 12 8 8Orthocladi inae a 0 12 0 3Pentaneura spp. PT 0 0 0 8 2Polypedilurn convictum PT 22i 35 2M, 131 159Polypedilum halterale PI 0 0 0 8 2Rheotanytarsus spp. PT 23 35 0 24 21Tanytarsus spp. PI 0 0 12 0 3Thienemanniella spp. PT 34 12 12 10 19
Adults 0 1 0 0 +Pupa 4 0 16 1 5Simul Lidae
Simulium spp. PT i6 69 2L, 1i 4iPupa 4 5 4 0 3
48
Table 18 (cont[nued)
Plate SamplerReplica te
Taxon Tolerance A B c DAveragzNo./ft
UnIden ti fied insect larvae 0 1 0 0 +
'loll uscaGast ropodaAncylidae
l..aevapex spp. 0 5 () 2
Total Number/Sampler 455 261 421 299 359
7~'(lndicates less than one organ [sm/ ft-.
49
Table 19
Benthic macroinvertebrates collected frol!l plate samplers i.n theConecuh-E scambia River near Cottage Hill Landing
(Station 12) , 18 Se ptember 1986
Plate SamplerReplicate
Avera gzTaxon Tolerance A B C D No./ft
Amphipoda 0 0 0 1 +~I:
Hyd ra ca ri. na PT 1 0 2
E Pheme ro pte raUnidenti Eled 3 3 4 2 3Baeticlae
Baetis spp. PT 0 0 10 0 3Unidentified 1 6 0 0 2
CRenidaeCaenis spp. PT 4 22 4 34 16
HeptageniidaeStenonema spp. PT 5 0 2 2 2
01 igoneuri telaeIsonychia spp. I 0 0 +
Tr lcorythidaeTricorythodes spp. PT 3 20 2 20 11
OdonataCoenagri onidae
I\rgia spp. PT 0 0 0 1 +Cordllilidae
Neurocordulia molesta PT 0 0 0 1 +
TrichopteraUniden tiE led 0 4 4 0 2lIydropsychidae
llyd ropsyc he spp. PT 0 1 0 0 +Hacronema spp. I 2 I, 3 0 2Unidentified 0 5 0 4 0
L
Hydropti UdaeHydroptila spp. PT 0 11 5 6 6Pupa 0 1 0 1 +
50
Table 19 (continued)
Plate SamplerReplicate
TaxonAvera~2
Tolerance A B C D No. lEt
LeptoceridaeNectopsvche sop. PT a 2 2 a IUnidentified a a a 6 2Pupa I a a a +
PhilopotamldaeChimarra spp. I a a 1 (] +
PolycenrropodidaeNeureclipsis spp. T l I 9 7 2l 12
Pupa 3 a a a +
ColeopteraUnidentified a a a 2 +Elmidae a (] a 8 2Adult I (] (] 5 2
DlpteraChi ronomid ae
Ablabesmyia parajanta PT 7 32 16 10 16ericatapus bicinctus T a a 8 a 2Cricotopus remus PT 2 a 8 20 8Cricatopus s p. I PT 7 2 l 8 149 46Corynoneura s pD. PT a a 8 a 2Cryptochironomus fulvus PT a a a 10 3Dicrotendipes lobus T (] 2l a a 5Nanocladius SDp. PT 2 a 16 lO 7Nilo tanypus spp. PT (] 5 a a lNilothaurna spp. 2 a a (] +Polypedilum convictum PT 5 a l6 a 5Polypedilum halterale PT 2 5 a (] 2Pseudochironomus spp. T 2 0 0 10 3Rheotanytarsus spp. PT 5 5 0 0 3Tanytarsus spp. PT 2 16 8 20 l2Thienemanniella spp. PT 22 26 lO l 0 37Tribelos fuscicornis PT 0 a 8 () 2Xenochironomus xenolabis 0 0 0 20 5
51
Table 19 (continued)
Plate SamplerReplicate
Taxon
AdultsPupaSimuliidae
Simulium spp.
Tolerance
PT
A
o1
o
R
n1
o
c
2J
1
D
(1
6
o
Averag2No./ft
+3
+
MolluscaGastropoda
Ancyl idaeLaevapex spp. 1 o o o +
Pelecypoda
Total Number/Sampler
*Indicates less tl13n one organism!ft2
•
52
1 0 0 0
97 221 248 371
+
234
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