University of Massachusetts Amherst ScholarWorks@UMass Amherst International Conference on Engineering and Ecohydrology for Fish Passage International Conference on Engineering and Ecohydrology for Fish Passage 2017 Jun 20th, 4:50 PM - 5:10 PM Attraction 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 See next page for additional authors Follow this and additional works at: http://scholarworks.umass.edu/fishpassage_conference Quintella, Bernardo; Mateus, C. S.; Alexandre, C. M.; Pereira, E.; Belo, A. F.; Oliveira, R.; and Almeida, P. R., "Attraction and Passage Efficiency of a Vertical-Slot Fish Pass for Sea Lamprey" (2017). International Conference on Engineering and Ecohydrology for Fish Passage. 4. http://scholarworks.umass.edu/fishpassage_conference/2017/june20/4 This Event is brought to you for free and open access by the Fish Passage Community at UMass Amherst at ScholarWorks@UMass Amherst. It has been accepted for inclusion in International Conference on Engineering and Ecohydrology for Fish Passage by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact scholarworks@library.umass.edu.
Presenter Information Bernardo Quintella, C. S. Mateus, C. M. Alexandre, E. Pereira, A. F. Belo, R. Oliveira, and P. R. Almeida This event is available at ScholarWorks@UMass Amherst: http://scholarworks.umass.edu/fishpassage_conference/2017/june20/4
ATTRACTION 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.ALMEIDA
Outline Sea lamprey background Coimbra fishway (River Mondego) Attraction efficiency Lamprey counts / statistical model Passage efficiency PIT tagging Pre & post operational monitoring Conclusions
Sea 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 RedList, 2014) Pop. trend: stable
Socio-economic relevance Gastronomy festivals Cultural Heritage Lamprey Brotherhood
Threats - commercial fishing FYKE net Drift TRAMMEL net PESQUEIRAS(traps) Hoop net
Threats obstacles to migration Mateus et al. (2012) End. Spec. Res. MINHO 174 km (69%) habitat loss DOURO 496 km (96%) habitat loss River Mondego TEJO 483 km (76%) habitat loss Historical lamprey records GUADIANA 516 km (80%) habitat loss 80% of the habitat lost in the Iberian Peninsula
River Mondego Availablefreshwater habitat for anadromous fish: 15 km ATLANT. OCEAN Coimbra Dam
River Mondego Availablefreshwater habitat for anadromous fish: ~60 km Coimbra Fishway Built 2011 4x habitat increment in RiverMondego; 5% Nationallevel
Coimbra Dam/fishway Top view ENTRANCE Coimbra Fishway Monitoring building
Main target species: Allis shad Sea lamprey Coimbra Fishway Length 125m Nº pools 23 Pool dim. Pool depth 4.5x3.0m 1.5-2.0m Flow discharge 1-1.5m 3 s -1 Attraction flow +0.5-1.0m 3 s - 1 Current veloc. (slots) Dissipated power 1.2-1.5ms -1 <150Watt/m 3
Attraction efficiency - methods 4 spawning seasons 2013-2016 Continuous video recording system Sea lamprey counts made a posteriori Statistical models - relate environmental predictors with counts Monitoring window Video camera Image recording system
Attraction efficiency - counts Number lampreys 8000 7000 6000 5000 4000 3000 2000 1000 Total/year 2013 = 8,333 2014 =21,977 2015 = 9,998 2016 = 9,414 0 January February March April May June
Attraction efficiency - counts Set of data used (subsample -peak of spawningmigration) Lamprey counts (cumulative %) 2013 100 90 80 70 60 50 40 30 20 10 0 1/jan 1/fev 1/mar 1/abr 1/mai 1/jun 2015 100 90 80 70 60 50 40 30 20 10 0 1/jan 1/fev 1/mar 1/abr 1/mai 1/jun 2014 100 90 80 70 60 50 40 30 20 10 0 1/jan 1/fev 1/mar 1/abr 1/mai 1/jun 80% 80% 2016 100 90 80 70 60 50 40 30 20 10 0 1/jan 1/fev 1/mar 1/abr 1/mai 1/jun 80% 80% Date
Attraction efficiency - predictors Pre-selected predictors to relate withthe sea lamprey counts: Water temperature (Temp - C) Specific Condutivity (SpeCon -µs/cm) Turbidity (Turb -FNU) Discharge Flow (Flow -m 3 /s) Lunar Cycle (LunCyc Full Moon; Last Quarter; New Moon; FirsQuarter) DayPeriod (DayPer - Night,Sunrise; Day;Sunset) Photoperiod (Phot -Daylengthinhours) N.B:Variables highly correlated (r> 0.8 ) wereexcluded fromthe analysis
Attraction efficiency BRT model Predictors explanatorypercentages: 2013 2014 Flow 81.0% Flow 28.6% Conductivity 10.8% Conductivity 8.5% Turbidity 3.2% Turbidity 14.8% Temperature 3.0% Temperature 33.6% Day period 1.7% R 2 = 0.80 Day period 8.9% R 2 = 0.8 Lunar cycle 0.4% Lunar cycle 5.7% 2015 2016 Flow 6.3% Flow 34.5% Conductivity 23.2% Conductivity 13.7% Turbidity 33.9% Turbidity 17.0% Temperature 25.1% Temperature 12.7% Day period Lunar cycle 2.9% 8.3% Day period Lunar cycle 21.8% R 2 = 0.87 R 2 = 0.86 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 0.0% 20.0% 40.0% 60.0% 80.0% 100.0%
Attraction efficiency BRT model Flow: lowflowsincrease theattraction efficiency for sea lamprey fitted function 2013 2014 2015 2016 flow (81%) flow (28,6%) flow (6,4%) fow(34,6%) Block-stone substrate Low Flow High Flow Fish Pass Entrance Fish Pass Exit
Attraction efficiency BRT model Flow: lowflowsincrease theattraction efficiency for sea lamprey 400 m 3 /s (High flow) 20 m 3 /s (Low flow)
Attraction efficiency BRT model Temperature: peak of activity from15-19 C fitted function 2013 2014 2015 2016 temp. (3,0%) temp. (33,6%) temp. (25,1%) temp. (12,8%) BBC BBC
Attraction efficiency BRT model Day period: nocturnalactivity pattern duringfishwaynegotiation 2013 2014 Frequency (nº lampreys) 1000 800 600 400 200 0 1200 1000 800 600 400 200 0 2015 2000 1500 1000 500 0 1200 1000 800 600 400 200 0 2016 Hour
Passage efficiency PIT tagging ATLANTIC OCEAN Capture Fyke net PIT tagging Tagged lampreys release site PIT antenna Coimbra Dam (fishway)
Passage efficiency PIT tagging PIT tagging 2014 spawning season Time between release and 1 st detection at the fishwaypit antenna Fishway efficiency 31% 38% 19% Successful Unsuccessful 30% 6% 6% <7 8-15 16-23 24-32 >32 Time (nº days) 70% #225 sea lampreys PIT tagged in April 2014
Fishwayefficiency for lampreys PIT tagging 2015 spawning season Fishway efficiency 9% 10% 20% 19% Successful Unsuccessful 16% Jan Feb Mar Apr 84% #103 sea lampreys PIT tagged Jan-Apr 2015
Pre a post operational monitoring Pre a post operational monitoring lamprey abundance Ammocoetesurvey Electric fishing monitoring #34 sampling stations Coimbra Fishway downstream upstream
Pre a post operational monitoring Pre a post operational monitoring lamprey abundance Ammocoete survey 40.0 x 14 CPUE (nº lampreys/hour) 35.0 30.0 25.0 20.0 15.0 10.0 5.0 x 38 Downstream fishway Upstream fishway 0.0 2011 2012 2013 2014 2015 2016 Year
Conclusions Attraction efficiency of Coimbra fishwayfor sea lamprey is mainly conditioned by flow and temperature; It is possible to improve the attractiveness of the fishway through 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 ammocoeteabundance in the upstream stretch.
Acknowledgements Funding: Coimbra fishway monitoring program (http://apambiente.wix.com/pppeixescoimbra) PROMAR project - Habitat restoration for diadromous fish in River Mondego (http://www.rhpdm.uevora.pt/)