Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System
Decreases in shallow-water habitat area (SWHA) in the Lower Columbia River and Estuary (LCRE) have adversely affected salmonid populations. We investigate the causes by hindcasting SWHA from 1928 to 2004, system-wide, based on daily higher high water (HHW) and system hypsometry. Physics-based regres...
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| Ngôn ngữ: | English |
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Springer
2023
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| Truy cập trực tuyến: | https://link.springer.com/article/10.1007/s12237-023-01229-3 https://dlib.phenikaa-uni.edu.vn/handle/PNK/9442 |
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oai:localhost:PNK-94422023-10-04T03:19:43Z Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System Templeton, William J. Jay, David A. Diefenderfer, Heida L. SWHA HHW Decreases in shallow-water habitat area (SWHA) in the Lower Columbia River and Estuary (LCRE) have adversely affected salmonid populations. We investigate the causes by hindcasting SWHA from 1928 to 2004, system-wide, based on daily higher high water (HHW) and system hypsometry. Physics-based regression models are used to represent HHW along the system as a function of river inflow, tides, and coastal processes, and hypsometry is used to estimate the associated SWHA. Scenario modeling is employed to attribute SWHA losses to levees, flow regulation, diversion, navigational development, and climate-induced hydrologic change, for subsidence scenarios of up to 2 m, and for 0.5 m fill. For zero subsidence, the system-wide annual-average loss of SWHA is 55 ± 5%, or 51 × 105 ha/year; levees have caused the largest decrease (54+5−14 %, or ~ 50 × 105 ha/year). The loss in SWHA due to operation of the hydropower system is small, but spatially and seasonally variable. 2023-10-04T03:19:42Z 2023-10-04T03:19:42Z 2023 Book https://link.springer.com/article/10.1007/s12237-023-01229-3 https://dlib.phenikaa-uni.edu.vn/handle/PNK/9442 en application/pdf Springer |
| institution |
Digital Phenikaa |
| collection |
Digital Phenikaa |
| language |
English |
| topic |
SWHA HHW |
| spellingShingle |
SWHA HHW Templeton, William J. Jay, David A. Diefenderfer, Heida L. Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| description |
Decreases in shallow-water habitat area (SWHA) in the Lower Columbia River and Estuary (LCRE) have adversely affected salmonid populations. We investigate the causes by hindcasting SWHA from 1928 to 2004, system-wide, based on daily higher high water (HHW) and system hypsometry. Physics-based regression models are used to represent HHW along the system as a function of river inflow, tides, and coastal processes, and hypsometry is used to estimate the associated SWHA. Scenario modeling is employed to attribute SWHA losses to levees, flow regulation, diversion, navigational development, and climate-induced hydrologic change, for subsidence scenarios of up to 2 m, and for 0.5 m fill. For zero subsidence, the system-wide annual-average loss of SWHA is 55 ± 5%, or 51 × 105 ha/year; levees have caused the largest decrease (54+5−14
%, or ~ 50 × 105 ha/year). The loss in SWHA due to operation of the hydropower system is small, but spatially and seasonally variable. |
| format |
Book |
| author |
Templeton, William J. Jay, David A. Diefenderfer, Heida L. |
| author_facet |
Templeton, William J. Jay, David A. Diefenderfer, Heida L. |
| author_sort |
Templeton, William J. |
| title |
Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| title_short |
Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| title_full |
Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| title_fullStr |
Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| title_full_unstemmed |
Shallow-Water Habitat in the Lower Columbia River Estuary: A Highly Altered System |
| title_sort |
shallow-water habitat in the lower columbia river estuary: a highly altered system |
| publisher |
Springer |
| publishDate |
2023 |
| url |
https://link.springer.com/article/10.1007/s12237-023-01229-3 https://dlib.phenikaa-uni.edu.vn/handle/PNK/9442 |
| _version_ |
1779307182524727296 |
| score |
8.891695 |