What Have We Lost? Modeling Dam Impacts on American Shad Populations Through Their Native Range
dc.contributor.author | Zydlewski, Joseph | |
dc.contributor.author | Stich, Daniel S. | |
dc.contributor.author | Roy, Samuel | |
dc.contributor.author | Bailey, Michael | |
dc.contributor.author | Sheehan, Timothy | |
dc.contributor.author | Sprankle, Kenneth | |
dc.date.accessioned | 2023-01-06T20:08:37Z | |
dc.date.available | 2023-01-06T20:08:37Z | |
dc.date.issued | 2021-10 | |
dc.identifier.citation | Zydlewski J, Stich DS, Roy S, Bailey M, Sheehan T and Sprankle K (2021) What Have We Lost? Modeling Dam Impacts on American Shad Populations Through Their Native Range. Front. Mar. Sci. 8:734213. doi: 10.3389/fmars.2021.734213 | en_US |
dc.identifier.doi | https://doi.org/10.3389/fmars.2021.734213 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12648/8061 | |
dc.description.abstract | American shad (Alosa sapidissima) are native to the east coast of North America from the St. Johns River, Florida, to the St. Lawrence River region in Canada. Since the 1800s, dams have reduced access to spawning habitat. To assess the impact of dams, we estimated the historically accessed spawning habitat in coastal rivers (485,618 river segments with 21,113 current dams) based on (i) width, (ii) distance from seawater, and (iii) slope (to exclude natural barriers to migration) combined with local knowledge. Estimated habitat available prior to dam construction (2,752 km2) was 41% greater than current fully accessible habitat (1,639 km2). River-specific population models were developed using habitat estimates and latitudinally appropriate life history parameters (e.g., size at age, maturity, iteroparity). Estimated coast-wide annual production potential was 69.1 million spawners compared with a dammed scenario (41.8 million spawners). Even with optimistic fish passage performance assumed for all dams (even if passage is completely absent), the dam-imposed deficit was alleviated by fewer than 3 million spawners. We estimate that in rivers modeled without dams, 98,000 metric tons of marine sourced biomass and nutrients were annually delivered, 60% of which was retained through carcasses, gametes and metabolic waste. Damming is estimated to have reduced this by more than one third. Based on our results, dams represent a significant and acute constraint to the population and, with other human impacts, reduce the fishery potential and ecological services attributed to the species. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Frontiers | en_US |
dc.relation.url | https://github.com/danStich/anadrofish | en_US |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | American shad | en_US |
dc.subject | Alosa sapidissima | en_US |
dc.subject | Diadromous fish | en_US |
dc.subject | Migration, dam | en_US |
dc.subject | Fish passage | en_US |
dc.subject | Marine derived nutrients | en_US |
dc.title | What Have We Lost? Modeling Dam Impacts on American Shad Populations Through Their Native Range | en_US |
dc.type | Article/Review | en_US |
dc.source.journaltitle | Frontiers in Marine Science | en_US |
dc.description.version | VoR | en_US |
refterms.dateFOA | 2023-01-06T20:08:38Z | |
dc.description.institution | SUNY Oneonta | en_US |
dc.description.department | Biology | en_US |
dc.description.degreelevel | N/A | en_US |
dc.accessibility.statement | Electronic Accessibility Statement: SUNY Oneonta is committed to providing equal access to college information by ensuring our digital content is accessible by everyone regardless of physical, sensory, or cognitive ability. This item has been checked by Adobe Acrobat Accessibility Check and remediated with the following result: [Remediation: title, language // Hazards: no tags, alt text]. To request further accessibility remediation on this SOAR repository item for your specific needs, please contact openaccess@oneonta.edu. | en_US |