Post on 14-Apr-2020
PISCO‐UCSBFishCommunitySurvey
Training
ObjectivesofPISCO
• Along‐term,largescale‐ecologicalstudyofpatternsandprocesses
• Anunprecedentedinterdisciplinaryefforttostudycoastalrockyreefecosystems(e.g.,ecologists,physicaloceanographers,physiologists,geneticists)
• Communication betweenscientists,managers,policy‐makers,andusergroups
• Anovelinterdisciplinarytrainingprogram
Toinitiateandmaintain:
•TotestforhypothesizedeffectsoftheestablishmentofmarineprotectedareasincentralandsouthernCalifornia(MLPA)andtheChannelIslands(CIMR)
‐ Ifineffectiveandwithoutevaluation,providesfalsesenseofsecurity• jeopardizesresource,especiallyifotherexistingregulationsarerelaxed
‐ Criticaltorefiningdesignandadaptivemanagement:• thesoonerbenefits/costsdetermined,themorerapidlyaspectsofdesigncanberefined
Why Evaluate MPAs?(Besideslegalrequirements)
‐ Ifsuccessisdocumented,canmotivateactioninotherplaces
EvaluatingCIMPAs‐ SomeQuestions:
AretherechangesinMPA’srelativetooutsideareas?
‐ Speciescomposition‐ Abundance‐ Sizeoforganisms‐ Reproductivepotential
Arepopulationsaffectedontheoutside(adultspilloverorlarvaeexport)?
HowdoesrecruitmentaffectabundanceinsideandoutsideofMPA’s?
Howdoeshabitataffectanychanges?Ishabitatitselfchanged?
Santa Barbara Channel
Unequal distribution of human use
Strong gradient in SST
Incorporatingspatialvariabilityintoassessment
Regionaleffectsoncommunitystructure
BigCreek
Lopez
Esalen
Bluefish
Weston
Monastery
Stillwater
HopkinsMacabee
HopkinsMarineLifeRefuge
PointLobosEcologicalReserve
BigCreekEcologicalReserve
Divingsurveys1999‐ present
MPA
Reference
Humansasdeterminantsofcommunitystructure
South
Inside
discriminant functions of fish densityMultivariate descriptors of differences in fish assemblages
DF2(Reserve
Status)
Outside
DF1 (Regional) North
ES‐01ES‐02
ES‐03
ES‐04LO‐01
LO‐02
LO‐03
LO‐04
BC‐01
BC‐02BC‐03
BC‐04
BF‐04BF‐03
BF‐02
BF‐01
BF‐00
BF‐99
MO‐99
WS‐01WS‐02
WS‐03
WS‐04
MO‐00
MO‐01MO‐02
MO‐03
MO‐04
ST‐00
ST‐01
ST‐02ST‐03
ST‐04ST‐99
BigCreek
Hopkins
PointLobos
HP‐99
HP‐00
HP‐01
HP‐02
HP‐03HP‐04
MB‐99MB‐00
MB‐01
MB‐02MB‐03
MB‐04
ES‐01ES‐02
ES‐03
ES‐04LO‐01
LO‐02
LO‐03
LO‐04
BC‐01
BC‐02BC‐03
BC‐04
BF‐04BF‐03
BF‐02
BF‐01
BF‐00
BF‐99
MO‐99
WS‐01WS‐02
WS‐03
WS‐04
MO‐00
MO‐01MO‐02
MO‐03
MO‐04
ST‐00
ST‐01
ST‐02ST‐03
ST‐04ST‐99
BigCreek
Hopkins
PointLobos
HP‐99
HP‐00
HP‐01
HP‐02
HP‐03HP‐04
MB‐99MB‐00
MB‐01
MB‐02MB‐03
MB‐04
discriminant functions of fish density
Multivariate descriptors of differences in fish assemblages
DF2(Reserve
Status)
DF1 (Regional)South
Inside
OutsideNorth
1 2 3 4 5 6 7 8 9 10 11 12 13 140.0
0.5
1.0
1.5
2.0
1 2 3 4 5 6 7 8 9 10 11 12 130.0
0.1
0.2
0.3
0.4
0.5
0.6
Site number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Biom
ass
(t ha
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 180.0
0.1
0.2
0.3
0.4
0.5
0.6
Targeted species Non-targeted species
InOut
1 2 3 4 5 6 7 8 9 10 11 12 130.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
C) ANA D) ANA
E) SCI F) SCI
1 2 3 4 5 6 7 8 9 10 11 12 13 140.0
0.5
1.0
1.5
2.0A) SBI B) SBI
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 160.0
0.2
0.4
0.6
0.8
1.0
1.2 G) SRI
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 160.0
0.2
0.4
0.6
0.8
1.0
1.2 H) SRI
Fine Scale Monitoring in the Channel Islands MPAs
Targeted species are more abundant within the MPAs
-but the magnitude of the difference depends on geography
HamiltonandCaselle(2015)Proc.R.Soc.BCaselleetal.(2015)NatureScientificReports
Trophicinteractions
2.Marineprotectedareasand“paired”comparisonsitesa) ExistingMPAs:Hopkins,PtLobos,BigCreekb) AnticipatedMLPAMPAsinCentralandSo.CAc) ChannelIslandsMarineReserves
WhenJune‐October(early=invertebrateandalgae;later=fish)
Where1. Differentoceanographicregimes
a) NorthandsouthofMontereyBayb) CarmelBayc) BigSurcoast‐ Cayucosd) SantaBarbaraChannel
AnnualSurveyDesign
……
Time
Site
Area
Zone(5,10,15,20m)
1999 200n
1 2 253
1 2
I IM O
Transects30x2x2m
……
Sampledesign‐Fish
Annualsurveys
OM
……
Time
Site
Area
Zone(5‐10,15‐20m)
1999 200n
1 2 253
1 2
I O
Transects30x2x2m
……
Sampledesign‐FishChannelIslandsModification
Annualsurveys
3
Coastline
Fishtransectdistribution
5m
10m
15m
20m
12m
5m
20m
Algae/invertebratetransectdistribution
Approach:Within‐siteSamplingDesign
2m
2m
Fishdensitysizes
What
1.Allidentifiablenon‐crypticfishes‐ e.g.,rockfishes,surfperches,greenlings
2.Estimatesizes‐ totallengthtonearestcentimeter
3.Threelevelsinwatercolumn‐ bottom‐midwater‐ surfacecanopy(whenkelpreachessurface)
AnnualSurveys
Visualtransectoverview
FishSurveysPhase1– mid‐water,bottom
Diver2‐ countsmidwaterfish‐ staysjustaheadofbottomdiver
Diver1 ‐ laystape‐ countsbottomfish
FishSurveysPhase2– canopy
Diver2 ‐Laystape‐Countcanopyfish
Entiretransectduration:<20min
Diver1 ‐Safetystop‐buddyforcanopydiver
SurveyMethodsandCountingRules1.Transectlocation:depthanddistancefromshore
supersedesouteredgeofforest (ie.Donotadjustlocationsforedgesofkelpbed)
2.Droptobottom(together)atpre‐determineddepth
3. Identifystartanddirection
4. Securetransecttapetokelpplantorrock
5.Midwaterdiverbegins,staysahead,andmaintainsvisualcontactwithbottomdiver(constrainedbydepth)
6. Exceptforshallowestdepthzone,midwaterdiverstaysatleast3‐5mabovebottom(>1mabovebottomdiver’swindow)
7. Onlycountahead,neverlookbacktocountbehindyou
8.Maintainreasonablespeed(speedcanbiascounts)
9. Sequentialwindowsof2‐3m(usehabitatmarkers)
10. First:countlargemobileexposedfishes‐‐ SNAPSHOT
11. Second:searchandcountunexposedfishes
12. Repeatnextwindow
13. Endoftransect:“pop”andrewindtransecttape,regroup,randomnumberofkickstostartofnexttransect
14.Highrelief‐‐ contourrockandmaintaindepth
15.Sand‐‐ ifheadedoffreef>4m,redirecttransect
SurveyMethodsandCountingRules
Visualtransects‐ Part1Technique
1. Dimension:30x2x2m
2. Movingwindows
3. Movinginbounds
4. TheStop,Scan,Searchapproach
5. Whentowrite?
6. OnwhatdoIwrite,whenIneedtowrite?
MovingWindows
2m
Lookahead,butnottoofarahead
MovingWindows
MovingInBounds
MovingInBounds
MovingInBounds
Uselandmarkstohelpdividethetransect
MovingInBounds
Stop,Scan,Search
Mobile,shoalingspecies
Sedentary,solitary,crypticspecies
Stop,Scan,Search
Stop,Scan,Search
Stop,Scan,Search
Structureyourcounts,developroutine
Stop,Scan,Search
Visualtransects‐ Part2
1. Mytransectline’snotstraight?‐ topography(contouring)‐ systematicnavigationdeviations‐whybotherwithbearingsanyway?(bias)
Whatif…
2. Iseemtobeinthewrongplace?‐ ‘structuralzeroes’e.g.,sand‐ OOZE‐ ‘OutofZoneExperience’or‘HowIlearnedtolovethe30mzone’
3. Thatsheepheadlooksawfullyfamiliar?
4. There’sabigrockinmyway?
Thecanopytransect
1. Counter:2mbelowsurface
2. Fastentape‐ followbearing
3. Lookup,keepslateup
4. Lookthrough,notatthecanopy
5. Maintainbounds
Recap:Visualtransecttechnique
1. Dimension:30x2x2m
2. Movingwindows
3. Movinginbounds
4. TheStop,Scan,Searchapproach
5. Whentowrite?
6. OnwhatdoIwrite,whenIneedtowrite?
Time
Accuracy
0%
100%
Theprogressfunction
Thereishope!
Questions?
WhendoIwriteallthisstuffdown?
1. Afterscanatbeginningofbound,recordmobileexposedspecies
2. Atendofbound,recordunexposedspecies
3. Whenyouhavemorethan3talliestoremember
4. Wheneveryouneedto
Goldenrule:Neverloweryourslate!
OnwhatdoIwriteallthisstuffdown?
DATE: OBSERVER: Detritus? Y / N TIME IN TIME OUTTEMP(F) TX1 TX2 TX3 TX4
VIS(m) TX1 TX2 TX3 TX4
ZONE-ONLY USE: IN, INMID, OUTMID, OUT SURGE(L,M,H) TX1 TX2 TX3 TX4
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
SITE: BUDDY:
SIDE: N S E W Cen
Heading:
1
B
35
50
60
SMYS
2(8)
14(25)
1(15)
(8)(9)(10)(11)
DATE: OBSERVER: Detritus? Y / N TIME IN TIME OUTTEMP(F) TX1 TX2 TX3 TX4
VIS(m) TX1 TX2 TX3 TX4ZONE-ONLY USE: IN, INMID, OUTMID, OUT SURGE(L,M,H) TX1 TX2 TX3 TX4
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
SITE: BUDDY:
SIDE: N S E W Cen
Heading:
SATR
1(12)111 4
2(25)11 4
4(15)4, 5 13
TL in parenthesesCount outside of parenthesesAdd up and circle totals for each size
DATE: OBSERVER: Detritus? Y / N TIME IN TIME OUTTEMP(F) TX1 TX2 TX3 TX4
VIS(m) TX1 TX2 TX3 TX4
ZONE-ONLY USE: IN, INMID, OUTMID, OUT SURGE(L,M,H) TX1 TX2 TX3 TX4
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
SITE: BUDDY:
SIDE: N S E W Cen
Heading:Point Dume6 Aug 2016 Jenn 1005 1040
1620 22
16
SATR SMYS SMEL OPIC SCAR HDEC ELAT DVAC2(30)2(4)15 (14)
8(26) 13 (2)
30(2)1(14)1(12)2(13),3(20)
9(14)
12(5)1224
1(24) 2(25)
22(4)
17 (5)
1(10)9109(3)
SFLA1(30)1(35)1(38)
BFRE
5(10),8,74(6),5,7
KGB
8(12)4,7 3(12)4(5)
4(15)4(5),59
Keegan110 L M
1
INMID
25
75
1620M
2
INMID
25
75
3
INMID
25
75
SATR SMEL ELAT DVAC
19
20
16
Actualsampledatasheet
DataRecordingProtocols
Sizeoffish shouldbeincentimetersinparentheses
Data should be placed on data sheets in the following manner:
Numberoffish countedshouldbeplacedtotheleftorrightofthesizeofthefishoutsideparentheseswithnumbersseparatedbycommasasfollows:(12)9,15,1OR1(12)IIIII,10,IIII
SizeRangeswillbeacceptablewhenthediverfeelsthathe/sheisunabletoreasonablyestimatetheactualsizeofeachindividualfish(i.e.schoolsofblues,aggregationsofYOY’s).
Rangesshouldbekeptwithina5cmbin(forexample25‐30or30‐35),butifpossible,smallerbinsshouldbemade.
WhendenotingMalevs.FemaleFish (KelpGreenlingandSheephead),makesymbolsclear(♀ and♂).Itisacceptabletouse(FandM)forthesamepurpose.
Allsmall,crypticsculpins/gobieswillNOT berecordedexceptforjuvenileCabezon
OliveandYellowtailRockfish aretobegroupedinanOYTcategory.
Fishthatareunknown shouldbeclassifiedtothebestspecificpossibilities(suchas“smelt”(jackortop),or“whiteperch”or“silverperch”),orintothenearesttaxonomicgroupingpossible(i.e.genusorfamily).Ifneitherthespecificpossibilities,noragenusorfamilycanbediscerned,fishshouldberecordedas“unknown”withadescriptionforimmediatetopsideinvestigation.Nounknownbeyondtheaboveparametersshallbeleftassuchwithoutapproval.(Ifyouencounterafishthatyoudonotrecognize,hitthebooksrightaway!Drawpictures,noteshape,markings,andbehavioranddescribeittotheotherdiversassoonasyougetoutofthewater.)
Zone(I,IM,OM,O):Adivisionofthesideinto4categoriesrepresentingonshore(5m)‐offshore(20m)stratificationortargetedbottomdepths(m)fortransects.
SIDE Adivisionofthesiteintotwoorthreeareas,referredtoassides,dependingontheirrelativepositionalongthecoast.
Level(BMC):Lettercodeforthepositionofthetransectinthewatercolumn(BottomorMidwaterorCanopy)
Visibility:Thediverestimationofhorizontalvisibilityoneachtransect.Measuredbyreelinginthetapeandnotingthedistanceatwhichtheendofthetapecanfirstbeseen.InMETERS
Transect:Anumberrepresentingoneofthethree/fourtransectssampledwithinthesamezone.Withtheheadingandzone,thisdescribesthelocationofeachtransectrelativetoallothers.
Depth:Averageactualdepthofthetransectestimatedbythediveratthebeginningofthetransect.
DATE: OBSERVER: Detritus? Y / N TIME IN TIME OUTTEMP(F) TX1 TX2 TX3 TX4
VIS(m) TX1 TX2 TX3 TX4ZONE-ONLY USE: IN, INMID, OUTMID, OUT SURGE(L,M,H) TX1 TX2 TX3 TX4
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
SITE: BUDDY:
SIDE: N S E W Cen
Heading:
DATE: OBSERVER: Detritus? Y / N TIME IN TIME OUTTEMP(F) TX1 TX2 TX3 TX4
VIS(m) TX1 TX2 TX3 TX4ZONE-ONLY USE: IN, INMID, OUTMID, OUT SURGE(L,M,H) TX1 TX2 TX3 TX4
FISH >TRANSECT
ZONE
LEVELB M C
DEPTH
CAN %
SITE: BUDDY:
SIDE: N S E W Cen
Heading:
Heading:Compassdirectionoftransectalongisobath
Temp:Thetemperatureoneachtransectmeasuredbythediverscomputers.
Surge:Diverestimationofmagnitudeofhorizontaldisplacementoneachtransect,recordedatdepth(L)ight‐ nosignificantsurge(M)oderate‐ noticeablelateralmovement,divermustcompensate.(H)igh‐ significantsurge,divermovedoutoftransectboundswhennotholdingon
Canopy%:Anestimateoftheamountofkelpcoverpertransect(kelpwithinthesamplingarea,notatthesurfaceexceptinthecaseofthecanopytransect)
Sizing
SizingFishUnderwater
1. Totallength
2. Aidstosizingfish
3. Factorsthatcontributetoover‐orunder‐estimation
1.Totallength
TotallengthTargetaccuracy± 10%
**Exception:Batraysmeasurewingspan
2.Aidstosizingfish
1. Slatemarks
2. Transecttapemarks
3. Handmeasurements(measureyourhand)
4. Bracketing(withhabitatfeatures)
5. Comparativeapproach(withhabitatfeatures)
6. Recalibrationduringdive(checkyourself)
3.Factorsthatcontributetounderandoverestimationofsize
1. Lowlight
2. Dullbodycolor
3. Poorvisibility
4.Objectsinforeground
5. Deep‐bodiedfish
Underestimation Overestimation
1. Brightlight
2. Brightbodycolor
3. Goodvisibility
4. Objectsinbackground
5. Elongatefish
Fishsizingexercises
1. Sizinginanimateobjects/fishmodels‐checkaccuracybymeasuringobjectaftersizeestimateiswrittendown
2. Sizinglivefish‐Workinpairs‐ Identifyandsizefishencountered(andanythingelsethatgetsinyourway)‐ Practicewithindividualfishaswellasschoolswitharangeofsizes‐ Comparenotes
SafetyConsiderations1. Diveprofiles
‐ approvedbyDSO‐wellwithinno‐decompressionlimits‐maximumdepth20m‐ 3‐5minsafetystopsmandatoryondivesbelow10m
2. Airconsumption‐ safetyoverdatacollection(500psiminimum)
3. Buddysystem‐membersofadiveteamarealwaysinvisualcontact
4. Seaconditions‐ divingwillonlybeconductedinsafeconditions
5. Liveboating‐ fishteamsaresometimeslive‐boated