TPWD 1955 F-5-R-2 #163: Inventory of species present in Oak Creek Reservoir at Blackwell, Texas

STATE Texas PROJECT NOo Fm5mR-22 Job Bud PERIOD June 222 195% _ Max 12 1955 Segment Completion Report lawrence S, Campbell Project Leader William Ga McClelland Assistant Project Leader TITLE Inventory of species present in Oak Creek Reservoir at Blackwell, Texaso OBJECTIVES To determine the species present and their relative abundance as well as to determine the ecolo ical factors influencin their distributiono g PROCEDURE Fortymeight gill net collections were made at twelve netting stations in Oak Greek Reservoiri Experimental nylon gill nets, measuring 125 fta long x 8 fto in depth and made up in five, 25 ft, sections were usedo Mesh size for these nets inn creased progressively in each following section at onemhalf inch intervals; beginning 'with eneminch.mesh and terminating with a threeminch mesh sectiono Thirtymthree seining collections were made at twelve seining stations in the reservoirg In nearly all collections? both 26 ftu é” mesh hag seines and 15 its é” mes;,common sense seines were asedo To estimate relative abundance9 a count was made o if all individuals taken in two hauls with a 26 tta e” mesh be seine for each collecm ‘ u l a In addition to that work other seining collections were made to determine seam canal distribution of species and to secure samples of fry after the spring spawning ._ 1 1 “isheso For this latter worhy four ftt common sense seines with %" mesh and 1/16” mesh were usedo Water analysis for dissolved carbon dioxide and oxygen content was taken each month and surface temperature, pH; and climatic conditions were recorded for each netting and seining collectiono Turbidity was taken for six collectionso Netting collection samples were weighed, measured and sexed in the fielda A sample of each species were examined for stomach content, and organs requiring laboraw tory study were _reserved in 10% formalino FINDING During the segment the lake receded to approximately l3§370 acre feet volume? a loss of approximately 8:000 acre feet; and refilled to about 303000 acre feet in May 19550 The lakes water remained clear (000 turbidityDO The maximum carbon dioxide cone tent recorded during the segment was 7&5 ppm and the lowest dissolved oxygen content was 5“ m. Maximum surface tem erature recorded was 8 0 F6 and the minimum record was 89 Fa PIT) . verage pH was 8040 As shown in Table No0 I; fortymeight net collections captured 1,12% indiviw duals of thirteen specieso Gray redhorse suckers (Moxostoma congestum} were taken for the first time during the segment as were flathead catfish iPilodictus olivaris) and white bass (Morons chrysops)a The flatheads captured were believed to be fish previously released in stockinga Carp (Cyprinu§_carpio) were not taken in collections during the segmentfi although 1953 netting captured one of these fisha Southern chanw nel catfish (ictalurus punctatus) and sunfishes (Lepomis) were more numerous than in previous collections, and largemouth black bass (Micropterus salmoides), gizzard shad (Dorosona cepedianumJ5 and river carp suckers (Carpiodes_carpio§ decreased numericallyo m Seining Collections: During the segment thirtywthree seining collections captured l,h7h indivim duals of seventeen speciesa New species collected were white bass (Morons chr sops) long nose gem (lepisosteus osseus), warmouth bass (ChaenObryttus coronariusi, golden shiner (Notemigonus:chrysoleucasj, plains minnow (Hyhognathus placitus§ and a (Notropisd whose identity has not been confirmedo Increases were apparent in populations of red ahiners {Retropis lutrensis)? and spotted sunfish {Lepomis punctatus), and mosquito fish {fiamhusia affinisiy white crappie (Pomoxis annularisi, and parrot minnows (Pimem phales vigilax) decreasedo Remarks: A continuance has been requested and approved for this job for next segmento SUMMARY io The volume of the lake receded 8,000 acre feet and refilled t0 8 new maxim mum of 30j000 acre feeto 20 Netting results indicate increases in southern channel catfish.and sunm fishesy and decreases in largemouth black.bass3 gissard shed} and river carp suckerso 30 White bass and fiathead catfish were taken for the first time during the segment? and increases in red shiners and spotted sunfish.tahen by seine ing were apparento so A continuation of this gob was requested and approved for next segmentu Hedwc H Zoeewom ooHHmoaMoSm wees Cow Geese momeeeowe a ee a we memowem QSH% bows meweg Oneo Zoeo Umoo mono mayo zone been _Em% Hoeow Zoo flea Wang W easemosm omemeameea 0 am 0 o o ;o .H@ _Hm me am we: _~mw Pmamm meow Hm: omeeaoamm nmeeao m r H : mm m w o w my ow Hem Page; wm,sm mew emeomomamsm Damage 0 o o o o o o o o m we aw Foam more mmm Zenomaoem ooomomdce o o o o o o o o o o m m OHQ 0mm mmm beooeasoaem messeomem o o o o o o o m a o m we awe “we mew seaweeem beacons m p m m m m ow ow m mm Ham awe Hesse or me mp0 mawoaeoaem ooaemeam o o o o o o o o o o m m new 0mm mew Haemosecm eceaamacm m m m m o m H o o w Hem Hem Roomy Hoomw ow: zwoeowdeecm mmHeQMQmm o o H o H w H o m w a Hm Forw woom mwm Zoeoom crewmowm o w o o o H o m o o 0 HQ Hamm moon mwr eoaoeom meeewmeom o o m o o o o H so 4 my em womw momm mm: meseomemm m m we rm am we r or m mm was won mmomp emcee mmm G e we 3 5a .5 so n. me am. was. {as Sons Poona Hdem HH mmwowom QOHHeodwoom wees cow macaw weaeeeowe moeowem qsww bomo Onea 204° demo wedg Ewe. peso Sew Hodmw Woww omaeemnm meeossm ow me o o 0 or am yo me .Ho: snow eoaeoeam Heaemsmsm mm How :r we mm woo a «W mm mow weumo Zoeeowem <moomdom o o Pw o m 0 MP Hr m mm :GmH enameemomm awesome 0 Hp 4 o mw m as so my me momm madamemaeSm eomooasm 0 ma m r we m m ow m em meow aoameHmoeem neeemoemeomm o o o r em 4 my mm we won 49mm wonmoem oommmwmooe : r m o 0 mo Ho wH Hm mH worm omwoeommm omcweo o o O m a O H H m we nwm Homemomemcm cmmmom o o o o m o o m r em .mH Ewoeooeeeom mmHEOHmem m r m H w o o : Hm mm mama Eocene owewmoom o o o o m o r Hw m we Harm choewm someoowHeom MH Hw m Hw H: m m Hm Hm wm mgrm bewoeHm owmoeHHom r Hm w m 0 o mH m HP 4H ;.@m emeoaam aaoeoooeeem o 0 so 0 m m o m m m; Hfimw HewoeMm ammmHOdwm O o o Hw m o O m Hm ww moms emeoaom message Wm mm we we 0 e o m m How o.ww Qwecoooemeeom noeoosewom o m m o o t w w a Hm Homm Hmo mmo Hem 4 Fem Ham mam mew steer Hoooo C) 2.4 §._J L20