American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage
American eel are likely to encounter and pass through hydropower turbines, particularly during the downstream spawning migration, where exposure to stressors can potentially lead to injuries and mortality. Previous research has recovered dead eels downstream of hydropower facilities and, for some fi...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2019-01-01
|
| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | https://www.kmae-journal.org/articles/kmae/full_html/2019/01/kmae180107/kmae180107.html |
| _version_ | 1819210984978382848 |
|---|---|
| author | Pflugrath Brett D. Harnish Ryan Rhode Briana Beirao Bernardo Engbrecht Kristin Stephenson John R. Colotelo Alison H. |
| author_facet | Pflugrath Brett D. Harnish Ryan Rhode Briana Beirao Bernardo Engbrecht Kristin Stephenson John R. Colotelo Alison H. |
| author_sort | Pflugrath Brett D. |
| collection | DOAJ |
| description | American eel are likely to encounter and pass through hydropower turbines, particularly during the downstream spawning migration, where exposure to stressors can potentially lead to injuries and mortality. Previous research has recovered dead eels downstream of hydropower facilities and, for some fish, injuries were easily attributed to blade strike; however, others showed no external signs of injury suggesting that other stressors, such as rapid decompression may be a potential source of mortality. For this research, yellow– and silver-phase American eel were held and allowed to acclimate to 172 kPa (absolute pressure) in hyper/hypobaric hydro-chambers for about 1 d. After acclimation, the state of buoyancy was determined prior to exposure to a rapid decompression simulating pressures encountered during hydroturbine passage. Fish were then examined for signs of barotrauma. Eel did not attain a state of neutral buoyancy but rather maintained negative buoyancy suggesting that eels, and possibly other benthic species, likely maintain a state of negative buoyancy to facilitate occupancy on or near the substrate. Additionally, eel were found to be resilient to rapid decompression, displaying no instantaneous mortality and minimal injuries, suggesting that barotrauma is not likely a major concern for American eel passing downstream through hydroturbines. |
| first_indexed | 2024-12-23T06:19:52Z |
| format | Article |
| id | doaj.art-1487cb360a5e477097729825505355d7 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-12-23T06:19:52Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-1487cb360a5e477097729825505355d72022-12-21T17:57:12ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022019-01-0104202010.1051/kmae/2019012kmae180107American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passagePflugrath Brett D.Harnish RyanRhode BrianaBeirao BernardoEngbrecht KristinStephenson John R.Colotelo Alison H.American eel are likely to encounter and pass through hydropower turbines, particularly during the downstream spawning migration, where exposure to stressors can potentially lead to injuries and mortality. Previous research has recovered dead eels downstream of hydropower facilities and, for some fish, injuries were easily attributed to blade strike; however, others showed no external signs of injury suggesting that other stressors, such as rapid decompression may be a potential source of mortality. For this research, yellow– and silver-phase American eel were held and allowed to acclimate to 172 kPa (absolute pressure) in hyper/hypobaric hydro-chambers for about 1 d. After acclimation, the state of buoyancy was determined prior to exposure to a rapid decompression simulating pressures encountered during hydroturbine passage. Fish were then examined for signs of barotrauma. Eel did not attain a state of neutral buoyancy but rather maintained negative buoyancy suggesting that eels, and possibly other benthic species, likely maintain a state of negative buoyancy to facilitate occupancy on or near the substrate. Additionally, eel were found to be resilient to rapid decompression, displaying no instantaneous mortality and minimal injuries, suggesting that barotrauma is not likely a major concern for American eel passing downstream through hydroturbines.https://www.kmae-journal.org/articles/kmae/full_html/2019/01/kmae180107/kmae180107.htmldownstream fish passagerapid decompressionhydropowerswim bladderhyperbarichypobaric |
| spellingShingle | Pflugrath Brett D. Harnish Ryan Rhode Briana Beirao Bernardo Engbrecht Kristin Stephenson John R. Colotelo Alison H. American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage Knowledge and Management of Aquatic Ecosystems downstream fish passage rapid decompression hydropower swim bladder hyperbaric hypobaric |
| title | American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| title_full | American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| title_fullStr | American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| title_full_unstemmed | American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| title_short | American eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| title_sort | american eel state of buoyancy and barotrauma susceptibility associated with hydroturbine passage |
| topic | downstream fish passage rapid decompression hydropower swim bladder hyperbaric hypobaric |
| url | https://www.kmae-journal.org/articles/kmae/full_html/2019/01/kmae180107/kmae180107.html |
| work_keys_str_mv | AT pflugrathbrettd americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT harnishryan americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT rhodebriana americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT beiraobernardo americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT engbrechtkristin americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT stephensonjohnr americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage AT coloteloalisonh americaneelstateofbuoyancyandbarotraumasusceptibilityassociatedwithhydroturbinepassage |