Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival?
Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential effects of HPPs include migration delays and associated increased energy d...
Published in: | Sustainability |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2677425 https://doi.org/10.3390/su12187341 |
id |
ftninstnf:oai:brage.nina.no:11250/2677425 |
---|---|
record_format |
openpolar |
spelling |
ftninstnf:oai:brage.nina.no:11250/2677425 2024-06-23T07:51:14+00:00 Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? Baktoft, Henrik Gjelland, Karl Øystein Szabo-Meszaros, Marcell Silva, Ana T. Riha, Milan Økland, Finn Alfredsen, Knut Forseth, Torbjørn 2020 application/pdf https://hdl.handle.net/11250/2677425 https://doi.org/10.3390/su12187341 eng eng Norges forskningsråd: 244022 urn:issn:2071-1050 https://hdl.handle.net/11250/2677425 https://doi.org/10.3390/su12187341 cristin:1827896 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 by the Authors 12 Sustainability 18 high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2020 ftninstnf https://doi.org/10.3390/su12187341 2024-06-07T03:57:56Z Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential effects of HPPs include migration delays and associated increased energy depletion, which potentially results in increased overall mortality. We combined a detailed 3D hydraulic model with high-resolution 3D tracking of tagged kelts (length 73–104 cm) to obtain estimates of kelt movement through water. These estimates were then used in an energetics model to estimate hourly energy expenditure while negotiating the HPP area. Hourly kelt energy expenditure varied between 0.8 and 10.1 kJ × h−1 and was dependent on kelt length. Degree of additional energy depletion can amount to several percent of remaining energy content (our study indicates 4–5 percentage points) potentially leading to reduced post-spawning survival. In turn, this can nullify the iteroparous breeding strategy and jeopardize long-term stability and persistence of Atlantic salmon populations inhabiting HPP rivers. publishedVersion Article in Journal/Newspaper Atlantic salmon Norwegian Institute for Nature Research: Brage NINA Sustainability 12 18 7341 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Baktoft, Henrik Gjelland, Karl Øystein Szabo-Meszaros, Marcell Silva, Ana T. Riha, Milan Økland, Finn Alfredsen, Knut Forseth, Torbjørn Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
topic_facet |
high-resolution 3D telemetry 3D hydraulic modeling anthropogenic structures river connectivity energetics model energy expenditure VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Repeat spawners constitute an important component of Atlantic salmon populations, but survival of post-spawning individuals (kelts) are often compromised by anthropogenic structures such as hydropower plants (HPPs). Potential effects of HPPs include migration delays and associated increased energy depletion, which potentially results in increased overall mortality. We combined a detailed 3D hydraulic model with high-resolution 3D tracking of tagged kelts (length 73–104 cm) to obtain estimates of kelt movement through water. These estimates were then used in an energetics model to estimate hourly energy expenditure while negotiating the HPP area. Hourly kelt energy expenditure varied between 0.8 and 10.1 kJ × h−1 and was dependent on kelt length. Degree of additional energy depletion can amount to several percent of remaining energy content (our study indicates 4–5 percentage points) potentially leading to reduced post-spawning survival. In turn, this can nullify the iteroparous breeding strategy and jeopardize long-term stability and persistence of Atlantic salmon populations inhabiting HPP rivers. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Baktoft, Henrik Gjelland, Karl Øystein Szabo-Meszaros, Marcell Silva, Ana T. Riha, Milan Økland, Finn Alfredsen, Knut Forseth, Torbjørn |
author_facet |
Baktoft, Henrik Gjelland, Karl Øystein Szabo-Meszaros, Marcell Silva, Ana T. Riha, Milan Økland, Finn Alfredsen, Knut Forseth, Torbjørn |
author_sort |
Baktoft, Henrik |
title |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_short |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_full |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_fullStr |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_full_unstemmed |
Can Energy Depletion of Wild Atlantic Salmon Kelts Negotiating Hydropower Facilities Lead to Reduced Survival? |
title_sort |
can energy depletion of wild atlantic salmon kelts negotiating hydropower facilities lead to reduced survival? |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2677425 https://doi.org/10.3390/su12187341 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
12 Sustainability 18 |
op_relation |
Norges forskningsråd: 244022 urn:issn:2071-1050 https://hdl.handle.net/11250/2677425 https://doi.org/10.3390/su12187341 cristin:1827896 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 by the Authors |
op_doi |
https://doi.org/10.3390/su12187341 |
container_title |
Sustainability |
container_volume |
12 |
container_issue |
18 |
container_start_page |
7341 |
_version_ |
1802642252235800576 |