.'/

$rr;:plern*lrl

to

;une

l?'i?

l

3

-c,L

'fu?t7,7

i.::.

'l'/

a--l

i-'{

l

.

':

i:COt.C,-aT

COlilirt

i,i:lTS:,

itiq.

i \)1'

%:

C0F.j:n.i.ji

Iy;i,,iR

ST,,,,i,

I[]l

,Ilt

FIU{,I

L I

)

i.t.li)lts,ltiA,i,

IC,}t

','

0n

l'lay 26'

l??"1

CettLlal'T11i.noi:;

I\ilr.i.ic

St':rvi.cl

(cips)

Corny:iin;.

pr.ecrnfr1i

a

'l'ltct'rnal

Dt:6e6'-',.'lrLi.on

Lr;

fl1,-'

rllinci:i

i)olhirion

cc;rlt.r-ol

ilcert!.

,i-he

Tirc.r,eiaL

I

Demonslration

irrdicaLed

LhaL

crPS i.nlend,lr.l

.t,o

liiil'e

furlhc,r'

bloiogical

i+ot,k

donc aL

Cotf

er:n

i.ake

as

a fac[-fin{ilng

sunrc;,,.

,

Ecololxl

ccrsullanls,

rnc:.

:..

'

perfcrne<i

bhe

flrst,

phasc

of Lhc

flct

fir-rrling,

sul'vey

in

l'ale

Aprll of

r97i.

t'laie"

Lentpet'a"'.1't?1

disso.!.r,oa

ory1i"r,

'p"ofil**,:'

phyloplankion,

zooplank'ton,

benLhic

macroinverlcbretes

anrl

fish

vrcre

sampled

at

fout'sLat'iotts

in

coffeen

Lake.

sLation

l

r,as

rocli.c.rj

i.n

thc

(!i.$cirar.ge

ar.m;

Station'2

j-n

l,ht':

clecp

water.

nest.

ifrn

a*;

SLat,ion

J

ber.ir,cern

SLat1ori

p

arrd

lh*

largest'

arnt

southt'res'u

of ll:e

p).ant;

arrrl

SL:rr.,ior:

A

rrlrct.r'cuur

florn

Lhe

r.ail.,ra;,

briclge.

,

The resul-l,s

of this

facr

fi'di'g

sur,yey

ma;J

bc

srurunari-zed

bri.efr.y.

The

water aL

SLation

l-

was

hornol,lrcrrnious;

aL l.,l.

l-

C from

sur.face

Lo

bot,Lon.

Weak

therrnal

gradicnts

r.rere

fonnd

aL

the

ol,hcr

four

sLations.

Oxygen reclucLion

at

depth

greaLer.than

l nreler

was

erridorL

aL

all

sLert,ions

er.cept

St,irlion

1.

Onl;.

near

thc

bottonr

ar,

station

3

did

Lhe

recor.dc<l

arnounL

farr

beror.r

./

_

!v

,. /1ppm.

,

I

trFrrr

.

Cot'rductivi-ty,

an indj.caLor

of

,timoruil'of

ionizeci

subslancesj

in

water,

,uu"

'

approrimaLely

.

..

IJOO

.

micronthos

al,

:

Si,aliolr

1,

J.2OO

:

aL

Sl:rtions

?

arrd

I

lrrcl

1,O.Jo

at

Station

f.

:Fourteen,,tBxon:of

gr.een

algae,

J

o.t''blue:grcer

algae,

36.ctiatomi;

r,:dino_'

.-.

flagellete

and

/1

eugleuoids

werrc

idcnfifiecl.

Tot,al

phyLoplanlrion

clensity'

',,

1an-ged

trom

J

r5L?

ce1ls per

mL

at,stotion

tt

Lo

gr,l|c)

ot.

Slatiop

3.

1l,l.r".,no"n-

'

' .,,:,';1'

::':

'

:r

:"

:'

:

j

abundance

of

phyLoprankton

in

Ap'il

aL

coffcen

take

(6,7e1

trniLsTinl)

vras

---

siniitor.

Lo

ntunLrer

r+1.;rr:

Lrr!

j'or

llr,.

i.ri\!,i..-

-

,:tt.)1,

i.i.;:rii,l. g;,_,r-ir;tl

I,t;r.

Li,k,,

Srir;gchris

.

,,:

...:

(ffltlS

l9'/i,

srrd

Jl'i

j'1

tty.,l

li)

iy'hr

i.i,

f,r'^,i:-,:1.

ilr;rr;

i.h(i::i:

!.r

r:,i:r,r.+:i

from

lleuton

Lrrl;c (,nt

ryll,

l.9,ll,

:tn4

jl,,i.lj.

I

,

'

'rhe

ugEI:A

(lt?5)

rr1:or'!;+l

?,'jJl

rrlr,;i,.:

,-)!'riI

:r../r,ii

i':.ii;lr

riyir,,if l; {,:,i,,,::

.ir-:

r1il clt

alr!

'i:l?

:

i::

(jr.:loi.:r..r',

,"

Apri) \')?'l

Coifrcn phytcpiani,.Lcrr

v,i,r: <.ir:r,i::.i,.r,i

[..,,

tt7t.,.:,,:

l;),rci.c.,

,r;ir!r:h

,

.

t-t

speciali'y

.'

--

gro'rr

oll

"':tii"sLrirur

surfact:s

i.iiLhr,r'

thi:;

lr;,r

1:l

linllt

+ni-r:

rpi:ci

rs.

,;

.Zoioplankt,on

earnples'inclurie<l

1!

laxon

cf rolifer.$r

?

of cl...rccc,-.riil:s,

aritl.8ofcopcporJs.Smai1]speci.endominal,,.'dLlrezocp1ank|,]tr-.

Tlic neatr

trurnber

of

benthic

rnacloinvcrri..ebraLcs

r.;a:;

]l-]

inCividual

pe}'

sclual'e

fooL

or 1rl9lr

per

squp,rc

meLer.. 'ihis

arnounl

j.r

sirnilar

Lo thcst:

reporLcd

for

Lake

Sangchris

and

llcl+Lon

Lekc.

.

tr':.str

were

colr-ecbe<t

beiveen

Aplil

26

and

i.fa;r 1by

gill.nel,r,

r*bnil"ri

hoop

ncts

and

sc.il.cs.

Cill and

hcop

rrets

wole

sci;

apploxi.rnaLely

?/1

houls

r

per

.

bet.

1l;l,axon

of

fish

'

-:,

were

col-l-ecteci;

loi,al

cafch

r.ras

67tl

irr.:;.v:Cuifi'.

M.rJt

al^urclan!

fish

in

calches

were

8izzard

shad

(z?.g)

,

,.rrite

crappii:

l(.el;)',

:-

.:

.- i

chantrel-

catfislt

(8r7)

and

blucgill

(BrJ).

si.x

large-noulh

bass

were

capt.u'e4,

atrthor.tgh

a'gle's

we.e

malri-ng

goocl

caLches

by

rod

and

'ee].

'..,.

'.,,".Infortnation

available

on

fish

in

Coffeen

Lake'r+as

revj-er*cd

and

Lhe

April

data

aCdetl.

It tt'as concludecl

thal

Coffccn

Iake

is

pr.esenLiy

supnorling

a

goodlishery

for

large-noutti

bass,

whrLc

clappie

and

channel

catllish.,,

'

::ii

..:,1.:

:

t:

Historically,

fj,sh

in

Coffeen

Lal<e

Luic.l

to

eyjrib'iL

pocrer

coprljLiol

-.t-

-.-

then.,smalr

than

t+lren

large, parli.cr.tlar'Iy

for

carrrivcrouc

spccies.

Orntriyot'-

i

.

,jt:

.:a

.:

1..

,,

l

oug'and',plankt;on

fecders

appeBr

Lo

shol

avcrage

gt,owih.

',::.

-J

Blur:gil.ts

ancl

srnal-.l crappic

appear

strurl,e,l;

thLs

may

5e bccalise

ol i,otr

ma4y'1n6i1,tduals

for available

forage.

Largcmoulli

bass

and rarger

i.fr1*

crapple

tlhicl't

can feed

on gizzard

shad

allpeal

Lo

be

6r.owing

wcll.

Char'rel

catfish

are doing

r,rel_l

in

Coffeen

Iake.

:.',

,.;::

.,;;.;

'

:',;', :, .

.

,

.:

'

---

':ja:'aa:

i:.

l:

..

j

'.:1.

:

.

.

,;

l.:,

,,',:...,

i":,

,

'

-)-

'

:i

:i.

.

,

nte''atnaI''pol'''ion

ojl

Lhe

Inct,

f.j.rr,ji,lfi

::i:1.T.:i,

.tr;::

accirT!.,l:=hErj

.fu1;i ii,

.t'o,P-6".,1ilris

.

.

:..

.

parf

of thc

:rurts.l;r'

l+:rli

t,o

:irrr1c.!1

r*r

;lr:,r;-r:4-r:f-irli:-;,-:ar.

fi:i.ies

asanrn.Jjcs||ottofsucccsscfslralrrii.ritill3},|'1.St:inr:scfr:j.til,:.r1i'rc::

It-rJ

I'ecL

IcngLlr,

6 fooL

<ler:Lh,

ilrid

,

.i

/'t,

ln.:h

mr:t:il

:ctl"c

:;.,;r,..ij

,

,i::

.g..:;;1g,..;

;.,

,scrning

'rtae

aLLeinpt,crJ

along

sltorel.i

cr-.r.t"r:li;nririirrg

r,,.,

1.1:,,,

!-r:-.r:,

srrnpli.ni;

Bl'r.jas

of

lhe

ipril

sur'.'{.y.

Sr-.injrirl

!,rt

Cc,i.frr.l;

I;rk,

i::

}:a:r;l;,..rr,rj

bi.ilcrn,

irreguiar

and

r.origlr

shorr:

linr: and

by vq1el.at,lon.

Urifo:.fr:5at,-,L;,,,,:

Lhc

cr.Jes

wilh

mosl

mirct'opltylc

cover

for

yor.ur6

fj.l;hcs

ari:

tii

ificrr.i

L

t-o

scine

anil

Lhc

caLches

arc prcbabl.y

nol

rcprcscnLrrt,lv,:.of

ilrrl

Li.u,:

nrunircl

of

;7oung

f:.sh.

BeCa'lse'of

tlllequaS-

scining

cont!it,ions,

coml:arisclnr;

beL',teen

st,efj.ons

are

<jif!'i-

cu-l-t

Lo

make.

Tl're rnost

abrurclant

spccies

were

gii.:.nrd

chrrl end

bir:erii11

(taute

'

:

1),

,.,.

of

spccies

'

seemrngly

rnost,

ilpo'Larrr,

to

a'grer.s1

?0

yo*ng

la"go.'

mouth

bass

ancl

]

ca',,fislr

wcrc

capLurccl

.

Yorurg

calfish

frequcnLly

occllpy- cleeper

water and

thus

vrere

ortL

of range

of

scines.

Young largemoublr

bass

vrere

segl

in

fhe vegetaLion

in

coves,

al'eas

very ciifficulr,

to

seine

adecluar,cly.,

A11

indiv:iduals

capr,urecl

appcarcd

.i.rr

good

physi.cnl.

conciilion.

,

Although

no definitivc

concl.tisious

.

can

be

cir"ar.rn

concerning

Lhe

populaliop

ayt'itic"

of

the

fish

species

itr

Ooffeen

Iake,

successfrrl

replodnclijn'i,;

;

:

occurri-ng

j-n

rnost game

species

and

r-ecruillnenl

appcars

Lo

be

aclequaLe

Lo

supp'rrt

existing

populations.

AIso,

Lhe

area

ulrstrearn

of

ihc

railviay',

cros"ing

and

other

areas

orrtside

the

cooring

loop

ap1>car

to

bc

cril,ical

toithe

Coffeen

Lake fishery

as

sparuting

ancl

nur.sery

arc)as.

---

:....

'

'

Table l. Younp,-of

-

[lre-year

I rom

Coffcen

Reservolr.

flshes

col;lectcd

.luly

1977

STATION

I

STATION 2

ST/r'l'IOl{

3

S1'/rT

iOl'l

rr

Spec les

Clupcldae

.

Doro:ibma

c.epgd tajtug

Tctal urldae

Ictal.trJus

rratal.J.s

I.

qunc.qatrrs.

'

Centrarchidae

Ml crop_terug

sa lrno.l3qs

Lepomis

cvanellgg

296

56,

::

.1

{

;.:]

.

r4

I8

136

4

18

"t3

r.9

3

2

56

.:''L.inacrochirus

i.

!.!t!:l:g

L. spp.

Pomoxis

annrrl a ris

I

29

4

2

:aa:

'

)

j::::