Alexandre, C. M.

Almeida, P. R.

Belo, A. F.

Mateus, C. S.

Oliveira, R.

Pereira, E.

Quintella, Bernardo

English

ScholarWorks@UMass Amherst

University of Massachusetts AmherstScholarWorks@UMass AmherstInternational Conference on Engineering andEcohydrology for Fish PassageInternational Conference on Engineering andEcohydrology for Fish Passage 2017Jun 20th, 4:50 PM - 5:10 PMAttraction and Passage Efficiency of a Vertical-SlotFish Pass for Sea LampreyBernardo QuintellaC. S. MateusC. M. AlexandreE. PereiraA. F. BeloSee next page for additional authorsFollow this and additional works at: https://scholarworks.umass.edu/fishpassage_conferenceThis Event is brought to you for free and open access by the Fish Passage Community at UMass Amherst at ScholarWorks@UMass Amherst. It hasbeen accepted for inclusion in International Conference on Engineering and Ecohydrology for Fish Passage by an authorized administrator ofScholarWorks@UMass Amherst. For more information, please contact scholarworks@library.umass.edu.Quintella, Bernardo; Mateus, C. S.; Alexandre, C. M.; Pereira, E.; Belo, A. F.; Oliveira, R.; and Almeida, P. R., "Attraction and PassageEfficiency of a Vertical-Slot Fish Pass for Sea Lamprey" (2017). International Conference on Engineering and Ecohydrology for FishPassage. 4.https://scholarworks.umass.edu/fishpassage_conference/2017/June20/4Presenter InformationBernardo Quintella, C. S. Mateus, C. M. Alexandre, E. Pereira, A. F. Belo, R. Oliveira, and P. R. AlmeidaThis event is available at ScholarWorks@UMass Amherst: https://scholarworks.umass.edu/fishpassage_conference/2017/June20/4ATTRACTION AND PASSAGE EFFICIENCY OF A VERTICAL-SLOT FISH PASS FOR SEA LAMPREY Bernardo QUINTELLA, C.S. MATEUS, C.M.ALEXANDRE, E. PEREIRA, A.F. BELO, R. OLIVEIRA,P.R. ALMEIDAOutline• Sea lamprey background• Coimbra fishway (River Mondego)• Attraction efficiency• Lamprey counts / statistical model• Passage efficiency• PIT tagging• Pre & post operational monitoring• ConclusionsSea lamprey background• Anadromous species (1.2 m length; 2.3 kg weight)• Worldwide distribution  - both sides North Atlantic• “Vulnerable” (Portuguese Red List, 2005)• “Least concern” (Global IUCN Red List, 2014)• Pop. trend: stableSocio-economic relevanceGastronomy festivalsCultural HeritageLamprey BrotherhoodThreats - commercial fishing FYKE net Drift TRAMMEL net PESQUEIRAS (traps)Hoop netThreats – obstacles to migration Mateus et al. (2012) End. Spec. Res.MINHO – 174 km(69%) habitat lossDOURO – 496 km(96%) habitat lossTEJO – 483 km(76%) habitat lossGUADIANA – 516 km(80%) habitat loss 80%of the habitat lost in the Iberian Peninsulal Historical lamprey recordsRiver MondegoAvailable freshwater habitat for anadromous fish:  15 km River MondegoATLANT.                OCEANCoimbra DamAvailable freshwater habitat for anadromous fish:  ~60 km ü 4x habitat increment in River Mondego;ü 5% National levelCoimbra FishwayBuilt 2011River MondegoCoimbra FishwayMonitoring buildingENTRANCECoimbra Dam/fishwayTop viewCoimbra FishwayLength 125mNº pools 23Pool dim. 4.5x3.0mPool depth 1.5-2.0mFlow discharge 1-1.5m3s-1Attraction flow +0.5-1.0m3s-1Current veloc. (slots)1.2-1.5ms-1Dissipated power<150Watt/m3Main target species:Sea lampreyAllis shadAttraction efficiency - methods• 4 spawning seasons 2013-2016• Continuous video recording system• Sea lamprey counts made a posteriori• Statistical models - relate environmental predictors with countsMonitoring window Video camera Image recording systemAttraction efficiency - counts010002000300040005000600070008000January February March April May JuneNumber  lampreys2013201420152016Total/year= 8,333= 21,977= 9,998= 9,414Attraction efficiency - countsSet of data used (subsample - peak of spawning migration) 01020304050607080901001/jan 1/fev 1/mar 1/abr 1/mai 1/jun201301020304050607080901001/jan 1/fev 1/mar 1/abr 1/mai 1/jun201401020304050607080901001/jan 1/fev 1/mar 1/abr 1/mai 1/jun201501020304050607080901001/jan 1/fev 1/mar 1/abr 1/mai 1/jun201680% 80%80% 80%Lamprey counts (cumulative %)DateAttraction efficiency - predictorsN.B: Variables highly correlated (r > |0.8|) were excluded from the analysisPre-selected predictors to relate with the sea lamprey counts: • Water temperature (Temp - °C)• Specific Condutivity (SpeCon - µS/cm)• Turbidity (Turb - FNU)• Discharge Flow (Flow - m3/s)• Lunar Cycle (LunCyc – Full Moon; Last Quarter; NewMoon; Firs Quarter)• Day Period (DayPer - Night, Sunrise; Day; Sunset)• Photoperiod (Phot - Day length in hours)Attraction efficiency – BRT model0.4%1.7%3.0%3.2%10.8%81.0%Lunar cycleDay periodTemperatureTurbidityConductivityFlow20135.7%8.9%33.6%14.8%8.5%28.6%Lunar cycleDay periodTemperatureTurbidityConductivityFlow20148.3%2.9%25.1%33.9%23.2%6.3%0.0% 20.0% 40.0% 60.0% 80.0% 100.0%Lunar cycleDay periodTemperatureTurbidityConductivityFlow201521.8%12.7%17.0%13.7%34.5%0.0% 20.0% 40.0% 60.0% 80.0% 100.0%Lunar cycleDay periodTemperatureTurbidityConductivityFlow2016Predictors explanatory percentages: R2 = 0.80 R2 = 0.8R2 = 0.87 R2 = 0.86Attraction efficiency – BRT modelFlow: low flows increase the attraction efficiency for sea lampreyflow (81%) flow (28,6%) flow (6,4%) fow (34,6%)fitted function 2013 201420152016High FlowFish Pass EntranceFish Pass ExitLow FlowBlock-stonesubstrateAttraction efficiency – BRT modelFlow: low flows increase the attraction efficiency for sea lamprey400 m3/s(High flow)20 m3/s(Low flow)Attraction efficiency – BRT modelTemperature: peak of activity from 15-19 °C temp. (3,0%) temp. (33,6%) temp. (25,1%) temp. (12,8%)fitted function 2013 201420152016BBC © BBC ©Attraction efficiency – BRT modelDay period: nocturnal activity pattern during fishway negotiation0200400600800100020130500100015002000201402004006008001000120020150200400600800100012002016Frequency (nº lampreys)HourCoimbraDam (fishway)Tagged lampreysrelease siteATLANTIC            OCEANPassage efficiency – PIT taggingCapture–Fyke netPIT taggingPIT antennaPIT tagging 2014 spawning season#225 sea lampreys PIT tagged in April 201431%38%6% 6%19%<7 8-15 16-23 24-32 >32Time (nº days)Time between release and 1st detection at the fishway PIT antennaPassage efficiency – PIT tagging30%70%Fishway efficiencySuccessfulUnsuccessfulPIT tagging 2015 spawning seasonFishway efficiency for lampreys#103 sea lampreys PIT tagged Jan-Apr 201516%84%Fishway efficiencySuccessfulUnsuccessful9% 10%20% 19%Jan Feb Mar AprCoimbraFishwaydownstream upstreamAmmocoete surveyPre a post operational monitoringPre a post operational monitoring – lamprey abundanceElectric fishing monitoring#34 sampling stations0.05.010.015.020.025.030.035.040.02011 2012 2013 2014 2015 2016CPUE (nº lampreys/hour)Year¢ Downstream fishway¢ Upstream fishwayAmmocoete surveyPre a post operational monitoring – lamprey abundancex 14x 38Pre a post operational monitoringConclusions• Attraction efficiency of Coimbra fishway for sea lamprey is mainly conditioned by flow and temperature;• It is possible to improve the attractiveness of the fishwaythrough flow regulation (3 large dams upstream) during a certain period of the spawning migration (water reach 14-18°C temperature) and night period;• Passage efficiency can be improved but 30% was enough to promote a 38x increment in ammocoete abundance in the upstream stretch.AcknowledgementsFunding:Ø Coimbra fishway monitoring program (http://apambiente.wix.com/pppeixescoimbra)Ø PROMAR project - Habitat restoration for diadromous fish in River Mondego (http://www.rhpdm.uevora.pt/)

Attraction and Passage Efficiency of a Vertical-Slot Fish Pass for Sea Lamprey

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Attraction and Passage Efficiency of a Vertical-Slot Fish Pass for Sea Lamprey

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