Barry, B.

Lowry, M.

Lucas, M.

Macaya, C.

Silva, E.

Silva, S.

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 21st, 3:15 PM - 3:30 PMOcean Connections: European River LampreyLampetra fluviatilis Passage Efficacy at a TidalBarrage Using a Navigation Lock as a Novel FishPassS. SilvaDurham UniversityM. LowryDurham UniversityC. MacayaDurham UniversityB. BarryDurham UniversityE. SilvaDurham UniversitySee 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.Silva, S.; Lowry, M.; Macaya, C.; Barry, B.; Silva, E.; and Lucas, M., "Ocean Connections: European River Lamprey Lampetra fluviatilisPassage Efficacy at a Tidal Barrage Using a Navigation Lock as a Novel Fish Pass" (2016). International Conference on Engineering andEcohydrology for Fish Passage. 45.https://scholarworks.umass.edu/fishpassage_conference/2016/June21/45Presenter InformationS. Silva, M. Lowry, C. Macaya, B. Barry, E. Silva, and M. LucasThis event is available at ScholarWorks@UMass Amherst: https://scholarworks.umass.edu/fishpassage_conference/2016/June21/45European River Lamprey Lampetra fluviatilis passage efficacy at a tidal barrage using a navigation lock as a novel fish passSilva, S; Lowry, M; Macaya, C; Barry, B., Silva, E & Lucas, M.21-06-2016Introduction Lock-and-dam structures abundant around the world Diadromous fishes specially affected Affecting access to the whole basin Using locks as fish passes potential alternative Aim of this study Effectiveness of using locks at tidal barrages for European river lamprey passage Attraction and passage by any other routesStudy site River Derwent (UK) Barmby Barrage first obstacle Relevant obstacle for lamprey passage (Lucas et al. 2009)Barmby barrage Causes: Physical obstruction? Velocity barrier?  Lock as a vertical slot fish pass ~40 cm gap between gates ~ 4 hours per ebbing tide  Sluices remain open for several hours more BackgroundExperimental design Study split into 2 elements: CAN lamprey pass through lock (PIT telemetry) WILL they enter lock (acoustic telemetry)Eel potPit Telemetry PIT telemetry Fine scale tracking in lock (passage efficiency) Two arrays (time of passage, passage efficiency) Two pilot trials and ten trials Acoustic telemetry Attraction Alternative routes Behaviour% lamprey attemptingPassage efficiencyTime of passage Eleven trials (~ 4 h per trial). N = 267 (10 radio tagged)Acoustic telemetry (Will they use the lock?) 69 KHz n = 59 (> 380-390 mm) 1 at flooding tide, 2 at ebbing tide Range receivers ~100 m RESULTS Efficiency of downstream PIT array: 90% (combined for both PIT arrays = 99%) - supported by radio telemetry observationsYES, THEY CAN PASS THROUGH THE LOCKRelease siteLampreys attemptingper trial (%). Mean, SEPassage efficiency per trial (%). Mean, SEPassage from released per trial (%). Mean, SELock93.3 ± 2.6(80.0-100)66.4 ± 5.9(31.8-96.4)62.7 ± 6.7(29.7-96.4)DSLock54.8 ± 7.3(22.2-81.8)78.1 ± 8.1(31.8-100.0)42.6 ± 7.6(11.1-80.0)PIT telemetry (lock passage)Passage time of PIT tagged lamprey through the lockRelease siteRelease-First ups lock SE Min MaxFirst lock-First ups lock SE Min MaxLock 57.0 6.2 1.7 331.9 39.6 6.0 0.6 238.3DSlock 64.1 8.7 5.4 229.3 13.0 2.5 0.2 53.7Lock+DSlock 59.2 5.1 1.7 331.8 31.4 4.4 0.2 238.301020304050607080Frequency (%)Time passage upstream gates (min)DSLockLockOutliers: lamprey attempting to pass Barmby barrageAcoustic telemetry 21 out of 59 (36%) lamprey attempting to pass the barrage (based upon individual residence times at Derwent mouth, relative to group averages)Acoustic telemetry Lamprey passing: 16 out of 21 attempting: 76% obstruction passage efficiency!! But:  15 (out of 16) passing through the sluices!!!! (low attraction)Acoustic telemetry Lamprey passing: 16 out of 21 attempting: 76% obstruction passage efficiency!! But:  15 (out of 16) passing through the sluices!!!! (low attraction)Therefore:YES, THEY CAN PASS THROUGH THE LOCKbutNO, THEY DO NOT USE IT (THEY ARE NOT ATRACTED TO IT) Head Lower head when lamprey passed the lock (Mann Whitney U test, p < 0.05) (PIT) Lower head when migrating to Derwent (Mann Whitney U test, p < 0.05) (Acoustic) Higher time of passage with higher head (Pearson, p < 0.05) (PIT and Acoustic)Factors affecting lamprey passagey = 1.4265x - 0.0482R² = 0.62y = 7.7397x1.9832R² = 0.690601201802403000 0.05 0.1 0.15Time of passage of the lock from release (min)Head  (m)lockDSlockLineal (lock)Potencial (DSlock) Head Lower when lamprey passed the lock (Mann Whitney U, p < 0.05) (PIT) Lower when migrating to Derwent (Mann Whitney U, p < 0.05) (acoustic) Higher time of passage with higher head (Pearson, p < 0.05) (PIT and acoustic) Tidal cycle Flooding tide: Sluices and lock close (not access nor attraction)Factors affecting lamprey passageRelease tide NAttempting [n (%)] Passing (n)Obstruction pass. effic. (%)Pass. fromreleased (%)Flooding 24 3 (12.5%) 2 67 8Ebbing 35 18 (51.4%) 14 78 40Conclusions Lamprey can pass through locks Passage through sluices possible  Specific conditions (more studies needed) Advantages of lock: less flow velocity (head split in two), lessturbulence Problem: attraction must be maximized Three main factors to maximize passage in tidal barriers: Access (period of sluices-locks open) Discharge (attraction) Low flow velocity (< 1.3-1.5 m s-1)Thank you so much for your attentionLamprey capture and tagging procedureSedating Measuring and weightingTagging (PIT, acoustic, radio) Recovering (ca. 1h)Eel potPIT telemetry (can they pass through the lock?) 32 mm PIT tag Two release points (within and downstream the lock) Eleven trials (~ 4 h per trial). N = 257 Two PIT arrays (three loops per array) 10 radio tagged lamprey also releasedInsulated copper multistrand wire used to form electromagnetic induction antennaLamprey passing the barrage (acoustic detections)0123419:30 19:45 20:00 20:15 20:30LoggersTime (h:min)ApproachingPassingUpstreamUpstream barrageDownstream barrage 2LockDownstream barrage 1-1.40-1.20-1.00-0.80-0.60-0.40-0.200.000.200.40-5-4-3-2-1012345612-Dec 13-Dec 14-Dec 15-Dec 16-DecHead (m)Meters or Acoustic logging stationSP Water level dws [m] Water level ups [m] 351 353 356 357 358 361 367 371 375 376 382 Head differenceSluices fully openSluices fully close-0.40-0.30-0.20-0.100.000.100.20-5-4-3-2-1012345630-Nov 1-DecHead (m)Meters or Acoustic logging stationSP Water level dws [m] Water level ups [m] 343 344 345 348 349 Head differenceSluices fully openSluices fully close

Ocean Connections: European River Lamprey Lampetra fluviatilis Passage Efficacy at a Tidal Barrage Using a Navigation Lock as a Novel Fish Pass

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Ocean Connections: European River Lamprey Lampetra fluviatilis Passage Efficacy at a Tidal Barrage Using a Navigation Lock as a Novel Fish Pass

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