Amaral, Susana

Branco, Paulo

Ferreira, Teresa

Katopodis, Christos

Pinheiro, António

Santos, José Maria

Silva, Ana

Viseu, Teresa

English

ScholarWorks@UMass Amherst

University of Massachusetts AmherstScholarWorks@UMass AmherstInternational Conference on Engineering andEcohydrology for Fish PassageInternational Conference on Engineering andEcohydrology for Fish Passage 2016Jun 20th, 5:00 PM - 5:15 PMInternational Case Studies: The FISHMOVEProject: Development of Mitigation Measures forSmall Instream Obstacles to Fish Migration inPortuguese StreamsJosé Maria SantosUniversity of LisbonPaulo BrancoUniversity of LisbonSusana AmaralUniversity of LisbonAna SilvaUniversity of LisbonTeresa FerreiraUniversity of LisbonSee 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.Santos, José Maria; Branco, Paulo; Amaral, Susana; Silva, Ana; Ferreira, Teresa; Pinheiro, António; Viseu, Teresa; and Katopodis,Christos, "International Case Studies: The FISHMOVE Project: Development of Mitigation Measures for Small Instream Obstacles toFish Migration in Portuguese Streams" (2016). International Conference on Engineering and Ecohydrology for Fish Passage. 10.https://scholarworks.umass.edu/fishpassage_conference/2016/June20/10Presenter InformationJosé Maria Santos, Paulo Branco, Susana Amaral, Ana Silva, Teresa Ferreira, António Pinheiro, Teresa Viseu,and Christos KatopodisThis event is available at ScholarWorks@UMass Amherst: https://scholarworks.umass.edu/fishpassage_conference/2016/June20/10The FISHMOVE project - Development ofmitigation measures for small instream obstaclesto fish migration in Portuguese streams*CEF – Forest Research CentreSchool of Agriculture, University of LisbonTel. ++351 213 653 489, Fax. ++351 213 653 338jmsantos@isa.ulisboa.pt, http://forbiocef.org/jssantos/ José Maria Santos*, Paulo Branco, Susana Amaral, Ana Silva, Teresa Ferreira, António Pinheiro, Teresa Viseu, Christos KatopodisGoals:• To evaluate the effect of small instream obstacles on the migratory movements ofnative Iberian cyprinids;• To evaluate fish movement performance through most common existing fishways;• To know migratory behaviour of Iberian cyprinids upon facing fishways;• propose mitigation measures / guidelines to improve connectivity of Portuguese rivers.Projeto FISHMOVE - Development of mitigation measures for small instream obstacles to fish migration in Portuguese streams (PTDC/AGR-CFL/117761/2010)EFFECT OF DIFFERENT FLOW REGIMES ON UPSTREAMMOVEMENTS OF CYPRINID FISHES IN POOL-TYPEFISHWAYS Fishways were mostly designed according to criteriadeveloped in northern European rivers Specific fish assemblage composition, primarily dominated bylarge potamodromous and small resident cyprinid fishes Weaker swimmersMigratory patterns less known Species afford legislative protection under EWFD Pool-type fishways represent more than 80% of the fishways in Portugal, in particular the pool-and-weir design (80%) 0 20 40 60 80 100Nature-likeFish LiftFish LockVertical slotPool-and-weir%National Forest Authority (2010)IntroductionMost of them (>50%) not hydraulically adequate for target species(Santos et al. 2012)PlungingStreamingClay (1995)Target speciesIberian barbel (Luciobarbus bocagei)Iberian chub (Squalius pyrenaicus)Flow regimes Study cyprinid species performance upon negotiating an experimental pool-typefishway subjected to different flow regimesGoalpotamodromous / benthic / medium-sizedresident / water column / small-sized• 3 schools of 5 fish for each species• 48 hours of acclimation to the lab• 30 min of acclimation to the fishway• 90 min (experimental trial)• 17 h – 01 h – natural migration period• 2 independent observers• 2 videocamerasExperimental design80%                            Streaming98.6%   Notch Streaming76.2%  Success StreamingBarbel Chub67.9%                         Streaming95.1%   Notch Streaming78.3%   Success StreamingResults Plunging flow regime limits the access of fish to the surface notch – effectively reducing the area available for cross-wall negotiation; Streaming flow regime proved to be more effective on aiding fish upstream movements for both species – contributing to a more holistic fishway;ConclusionsMore info ?CAN BOULDER PLACEMENT IMPROVE FISHWAYNEGOTIATION?* Shamloo, H.; Rajaratnam, N.; Katopodis, C., 2001: Hydraulics of simple habitat structures.  J. Hydraul. Res. 39, 351-366.Previous hydraulics studies (e.g. Shamloo et al. 2001*) demonstrated that boulder placementincrease spatial hydraulic heterogeneity which may facilitate upstream fish movement performance.Boulder placement has been used with success in naturalfishways to improve connectivity for fish Resting areas for fish Creation of microchannels (interconnected lowstress pathways) for fish movementsNature-like fishways©FAO (2002)Pool-type fishways ?Increasing interest has been expressed in the placement of boulders at the bottom of these facilities. So far few studies have considered the effect of boulder placement on fish passage performanceIntroduction1. Boulder densityLow density High densityIberian barbel (Luciobarbus bocagei)Wild fish – ElectrofishingHigh discharge*(62.7 L.s-1)Low discharge(38.5 L.s-1)High density (12)Low density (8)Low density (8)High density (12)50%50%20%30%(5.3 ± 4.2 min.)*(12.1± 6.5 min.)2. Boulder highHigh discharge(62.7 L.s-1)Low bouldersHigh boulders55%60%High discharge(62.7 L.s-1)Low bouldersHigh boulders55%60%Higher transit times7.1 ± 5.8 minLower transit times2.6 ± 1.6 min Boulders placed at the bottom of pool-type fishways act as drivers for fish movements Fish passage success was flow-related, but a higher density combined with increased Q reduced transit time for successful upstream passage Higher boulders (lower relative depth of flow) potentiate highspatial hydraulic heterogeneity Boulder placement facilitates fish movements while turning thefishway into a more nature-mimicking structureConclusionsMore info ?Movements of a potamodromous cyprinid past anexperimental weir with variable height and plungepool depth Fragmentation of river networks has been pointed out as one of themost serious threats to the sustainability of fish populations. Total or partial blockage of migratory movements Changes in water depth and velocity patterns Formation of vertical drops that change the hydraulic environment Although far more numerous than dams, the impact of small weirs on fish movements have received much less attention.Number of large dams: > 50,000Number of small obstacles: > 1,000.000 (Lucas et al. 2009)IntroductionHD16 Combinations of D x H D10 cm20 cm30 cm50 cmH5 cm10 cm15 cm25 cmXEvaluate the passage performance of a potamodromous cyprinid, the Iberianbarbel (Luciobarbus bocagei) when encountering small weirs of varying heights(H) associated with variable plunge pool depths (D).GoalExperimental weir (PVC modules)HDExperimental facility (LNEC)Source d.f SS MS F PD 3 160.30 53.43 5.46 0.004H 3 137.30 45.76 4.68 0.006D x H 9 266.02 29.55 3.02 0.005Residuals(PerMANOVA, p < 0.01)1 3 495024192-way PerMANOVA: effects of  D, H and D x H on the total number of successesPaiwase comparisons: 20 cm (D20) with the highest passage successX 25 cm (H25) with the lowest passage successResults Passage success was inhibited with configurations of lower depths in association with higher jumps Contrarily to expected, passage success did not increase with higher depths and lower height of jumps Successful negotiation of small weirs seems to be a more complex phenomenon where both variables interact to set the most effective hydraulic conditions for fish.  These outcomes are useful to define design criteria for the requalification of small barriers to improve fish passage and habitat connectivity.ConclusionsThankyou!Acknowledgements:Funding:FishMove (PTDC/AGR-CFL/117761/2010)To submit manuscripts:tandfonline.com/tjoeTJoE topics Broadly based on the Ecohydraulic trilogy:• aquatic biota movements, swim ability & passage systems• e-flows, i.e. environmental, instream or ecological flows• small to large scale habitat or ecological restoration, including dam removal

International Case Studies: The FISHMOVE Project: Development of Mitigation Measures for Small Instream Obstacles to Fish Migration in Portuguese Streams

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International Case Studies: The FISHMOVE Project: Development of Mitigation Measures for Small Instream Obstacles to Fish Migration in Portuguese Streams

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