Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin
Dams within the Susquehanna River drainage, Pennsylvania, are potential barriers to migration of diadromous fishes, and many are under consideration for removal to facilitate fish passage. To provide useful input for prioritizing dam removal, we examined relations between landscape-scale factors and...
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ftunivmassamh:oai:scholarworks.umass.edu:fishpassage_journal_articles-1223 2023-05-15T13:28:21+02:00 Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin Kocovsky, P M Ross, R M Dropkin, D S 2008-01-01T08:00:00Z https://scholarworks.umass.edu/fishpassage_journal_articles/224 unknown ScholarWorks@UMass Amherst https://scholarworks.umass.edu/fishpassage_journal_articles/224 Journal Articles Alosa aestivalis Alosa pseudoharengus Alosa sapidissima American eel American shad Anguilla Anguilla rostrata barriers blueback herring dam removal dams eels fish passage habitat herring juvenile mechanisms migration productivity restoration shad Susquehanna River upstream watershed wildlife text 2008 ftunivmassamh 2022-01-09T19:35:49Z Dams within the Susquehanna River drainage, Pennsylvania, are potential barriers to migration of diadromous fishes, and many are under consideration for removal to facilitate fish passage. To provide useful input for prioritizing dam removal, we examined relations between landscape-scale factors and habitat suitability indices (HSIs) for native diadromous species of the Susquehanna River. We used two different methods (U.S. Fish and Wildlife Service method: Stier and Crance [1985], Ross et al. [1993a, 1993b, 19971, and Pardue [ 1983]; Pennsylvania State University method: Carline et al. [ 19941) to calculate HSIs for several life stages of American shad Alosa sapidissima, alewives Alosa pseudoharengus, and blueback herring Alosa aestivalis and a single HSI for American eels Anguilla rostrata based on habitat variables measured at transects spaced every 5 kin on six major Susquehanna River tributaries. Using geographical information systems, we calculated land use and geologic variables upstream from each transect and associated those data with HSIs calculated at each transect. We then performed canonical correlation analysis to determine how HSIs were linked to geologic and land use factors. Canonical correlation analysis identified the proportion of watershed underlain by carbonate rock as a positive correlate of HSIs for all species and life stages except American eels and juvenile blueback herring. We hypothesize that potential mechanisms linking carbonate rock to habitat suitability include increased productivity and buffering capacity. No other consistent patterns of positive or negative correlation between landscape-scale factors and HSIs were evident. This analysis will be useful for prioritizing removal of dams in the Susquehanna River drainage, because it provides a broad perspective on relationships between habitat suitability for diadromous fishes and easily measured landscape factors. This approach can be applied elsewhere to elucidate relationships between fine- and coarse-scale variables and suitability of habitat for fishes Text Anguilla anguilla University of Massachusetts: ScholarWorks@UMass Amherst |
institution |
Open Polar |
collection |
University of Massachusetts: ScholarWorks@UMass Amherst |
op_collection_id |
ftunivmassamh |
language |
unknown |
topic |
Alosa aestivalis Alosa pseudoharengus Alosa sapidissima American eel American shad Anguilla Anguilla rostrata barriers blueback herring dam removal dams eels fish passage habitat herring juvenile mechanisms migration productivity restoration shad Susquehanna River upstream watershed wildlife |
spellingShingle |
Alosa aestivalis Alosa pseudoharengus Alosa sapidissima American eel American shad Anguilla Anguilla rostrata barriers blueback herring dam removal dams eels fish passage habitat herring juvenile mechanisms migration productivity restoration shad Susquehanna River upstream watershed wildlife Kocovsky, P M Ross, R M Dropkin, D S Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
topic_facet |
Alosa aestivalis Alosa pseudoharengus Alosa sapidissima American eel American shad Anguilla Anguilla rostrata barriers blueback herring dam removal dams eels fish passage habitat herring juvenile mechanisms migration productivity restoration shad Susquehanna River upstream watershed wildlife |
description |
Dams within the Susquehanna River drainage, Pennsylvania, are potential barriers to migration of diadromous fishes, and many are under consideration for removal to facilitate fish passage. To provide useful input for prioritizing dam removal, we examined relations between landscape-scale factors and habitat suitability indices (HSIs) for native diadromous species of the Susquehanna River. We used two different methods (U.S. Fish and Wildlife Service method: Stier and Crance [1985], Ross et al. [1993a, 1993b, 19971, and Pardue [ 1983]; Pennsylvania State University method: Carline et al. [ 19941) to calculate HSIs for several life stages of American shad Alosa sapidissima, alewives Alosa pseudoharengus, and blueback herring Alosa aestivalis and a single HSI for American eels Anguilla rostrata based on habitat variables measured at transects spaced every 5 kin on six major Susquehanna River tributaries. Using geographical information systems, we calculated land use and geologic variables upstream from each transect and associated those data with HSIs calculated at each transect. We then performed canonical correlation analysis to determine how HSIs were linked to geologic and land use factors. Canonical correlation analysis identified the proportion of watershed underlain by carbonate rock as a positive correlate of HSIs for all species and life stages except American eels and juvenile blueback herring. We hypothesize that potential mechanisms linking carbonate rock to habitat suitability include increased productivity and buffering capacity. No other consistent patterns of positive or negative correlation between landscape-scale factors and HSIs were evident. This analysis will be useful for prioritizing removal of dams in the Susquehanna River drainage, because it provides a broad perspective on relationships between habitat suitability for diadromous fishes and easily measured landscape factors. This approach can be applied elsewhere to elucidate relationships between fine- and coarse-scale variables and suitability of habitat for fishes |
format |
Text |
author |
Kocovsky, P M Ross, R M Dropkin, D S |
author_facet |
Kocovsky, P M Ross, R M Dropkin, D S |
author_sort |
Kocovsky, P M |
title |
Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
title_short |
Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
title_full |
Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
title_fullStr |
Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
title_full_unstemmed |
Linking landscapes and habitat suitability scores for diadromous fish restoration in the Susquehanna River basin |
title_sort |
linking landscapes and habitat suitability scores for diadromous fish restoration in the susquehanna river basin |
publisher |
ScholarWorks@UMass Amherst |
publishDate |
2008 |
url |
https://scholarworks.umass.edu/fishpassage_journal_articles/224 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Journal Articles |
op_relation |
https://scholarworks.umass.edu/fishpassage_journal_articles/224 |
_version_ |
1766403577298812928 |