Incorporating thermal requirements into flow regime development for multiple Pacific salmonid species in regulated rivers.
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| Title: | Incorporating thermal requirements into flow regime development for multiple Pacific salmonid species in regulated rivers. |
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| Authors: | He, Li-Ming1 lhe2006@gmail.com, Marcinkevage, Cathy1 cathy.marcinkevage@noaa.gov |
| Source: | Ecological Engineering. Feb2017, Vol. 99, p141-158. 18p. |
| Subjects: | Salmonidae, Water temperature, Classification of fish, Warmwater fishing, Endangered Species Act of 1973 (U.S.) |
| Geographic Terms: | Central Valley (Calif. : Valley) |
| Abstract: | It has long been recognized that altered flow regimes and warm water temperature are among major stressors that have contributed to the precipitous decline of salmonid populations in California’s Central Valley, resulting in many of them being listed as endangered or threatened pursuant to the U.S. Endangered Species Act. While it is widely acknowledged that water temperature affects all freshwater life stages of salmonids, it has not been a focus when developing instream flow requirements. In this study, we developed a framework that incorporates water temperature requirements into flow regime development for multiple Pacific salmonid species. We applied this framework to Clear Creek, an upper Central Valley stream that supports three salmonid species and has been regulated by reservoir releases for instream flow since 1963 when Whiskeytown dam was built. The analysis of flow data indicated that from the pre-project ( i.e. , pre-dam) period to post- project period, flow magnitude was reduced by 45–76% for flood flows, 43% for spring pulse flows, and 27–53% for monthly average flows from January through May. Water temperature from 1996 to 2013 exceeded the U.S. Environmental Protection Agency recommended criteria for salmonids from May to October, with most exceedances occurring in September, followed by May and October. Statistical analyses suggested that the abundances of both adult and juvenile salmonids in Clear Creek were strongly correlated to flow magnitude, water temperature, or both. Higher flows that coincided with adult immigration were correlated to higher numbers of adults spawning in Clear Creek, which in turn produced a higher number of juveniles; however, higher flows that occurred during the early life stages ( e.g ., fry) appeared to reduce the number of outmigrating juveniles. Higher water temperatures in the immigration, spawning, and juvenile rearing periods were correlated with reduced numbers of both adult and juvenile spring-run Chinook salmon in Clear Creek. High water temperatures in June and July were correlated with reduced number of outmigrating juvenile steelhead. Adult or juvenile fall-run Chinook salmon showed either a curvilinear or linear relationship with water temperature during their immigration, spawning, and rearing periods. Based on the pre-project flow and strong correlation between fish abundance and flow or water temperature, we developed a flow regime that incorporates water temperature requirements and other needs of different life stages of salmonids. The flow regime includes the following elements: winter and spring base flow, summer and fall water temperature sustaining flow, winter floodplain inundation flow, and spring pulse flow. This approach can be applied to other regulated streams for developing flow regimes to conserve and recover listed salmonid species. [ABSTRACT FROM AUTHOR] |
| Copyright of Ecological Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 120518065 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Incorporating thermal requirements into flow regime development for multiple Pacific salmonid species in regulated rivers. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22He%2C+Li-Ming%22">He, Li-Ming</searchLink><relatesTo>1</relatesTo><i> lhe2006@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Marcinkevage%2C+Cathy%22">Marcinkevage, Cathy</searchLink><relatesTo>1</relatesTo><i> cathy.marcinkevage@noaa.gov</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ecological+Engineering%22">Ecological Engineering</searchLink>. Feb2017, Vol. 99, p141-158. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Salmonidae%22">Salmonidae</searchLink><br /><searchLink fieldCode="DE" term="%22Water+temperature%22">Water temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Classification+of+fish%22">Classification of fish</searchLink><br /><searchLink fieldCode="DE" term="%22Warmwater+fishing%22">Warmwater fishing</searchLink><br /><searchLink fieldCode="DE" term="%22Endangered+Species+Act+of+1973+%28U%2ES%2E%29%22">Endangered Species Act of 1973 (U.S.)</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Central+Valley+%28Calif%2E+%3A+Valley%29%22">Central Valley (Calif. : Valley)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: It has long been recognized that altered flow regimes and warm water temperature are among major stressors that have contributed to the precipitous decline of salmonid populations in California’s Central Valley, resulting in many of them being listed as endangered or threatened pursuant to the U.S. Endangered Species Act. While it is widely acknowledged that water temperature affects all freshwater life stages of salmonids, it has not been a focus when developing instream flow requirements. In this study, we developed a framework that incorporates water temperature requirements into flow regime development for multiple Pacific salmonid species. We applied this framework to Clear Creek, an upper Central Valley stream that supports three salmonid species and has been regulated by reservoir releases for instream flow since 1963 when Whiskeytown dam was built. The analysis of flow data indicated that from the pre-project ( i.e. , pre-dam) period to post- project period, flow magnitude was reduced by 45–76% for flood flows, 43% for spring pulse flows, and 27–53% for monthly average flows from January through May. Water temperature from 1996 to 2013 exceeded the U.S. Environmental Protection Agency recommended criteria for salmonids from May to October, with most exceedances occurring in September, followed by May and October. Statistical analyses suggested that the abundances of both adult and juvenile salmonids in Clear Creek were strongly correlated to flow magnitude, water temperature, or both. Higher flows that coincided with adult immigration were correlated to higher numbers of adults spawning in Clear Creek, which in turn produced a higher number of juveniles; however, higher flows that occurred during the early life stages ( e.g ., fry) appeared to reduce the number of outmigrating juveniles. Higher water temperatures in the immigration, spawning, and juvenile rearing periods were correlated with reduced numbers of both adult and juvenile spring-run Chinook salmon in Clear Creek. High water temperatures in June and July were correlated with reduced number of outmigrating juvenile steelhead. Adult or juvenile fall-run Chinook salmon showed either a curvilinear or linear relationship with water temperature during their immigration, spawning, and rearing periods. Based on the pre-project flow and strong correlation between fish abundance and flow or water temperature, we developed a flow regime that incorporates water temperature requirements and other needs of different life stages of salmonids. The flow regime includes the following elements: winter and spring base flow, summer and fall water temperature sustaining flow, winter floodplain inundation flow, and spring pulse flow. This approach can be applied to other regulated streams for developing flow regimes to conserve and recover listed salmonid species. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ecological Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ecoleng.2016.11.009 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 141 Subjects: – SubjectFull: Salmonidae Type: general – SubjectFull: Water temperature Type: general – SubjectFull: Classification of fish Type: general – SubjectFull: Warmwater fishing Type: general – SubjectFull: Endangered Species Act of 1973 (U.S.) Type: general – SubjectFull: Central Valley (Calif. : Valley) Type: general Titles: – TitleFull: Incorporating thermal requirements into flow regime development for multiple Pacific salmonid species in regulated rivers. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: He, Li-Ming – PersonEntity: Name: NameFull: Marcinkevage, Cathy IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 09258574 Numbering: – Type: volume Value: 99 Titles: – TitleFull: Ecological Engineering Type: main |
| ResultId | 1 |
