Protecting and Restoring the Habitats of Anadromous Salmonids in the Lake Washington Watershed, an Urbanizing Ecosystem

Fresh, Kurt L.; Lucchetti, Gino

doi:10.1201/9781439822678.sec7

Cited by 3 publications

(3 citation statements)

References 46 publications

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“…However, the effects of urbanization on salmonids may depend on the spatial pattern of development and stream disturbance. For example, relatively healthy salmonid populations in streams in the vicinity of Seattle, WA, occur only in streams with intact headwaters (Fresh and Lucchetti, 2000). Minimizing disturbance to headwater streams may increase the ecological resilience of these stream systems.…”

Section: Regional Ecosystem Response To Headwater Stream Alterationmentioning

confidence: 99%

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹

Freeman

Pringle

Jackson

2007

J American Water Resour Assoc

485

293

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Cumulatively, headwater streams contribute to maintaining hydrologic connectivity and ecosystem integrity at regional scales. Hydrologic connectivity is the water‐mediated transport of matter, energy and organisms within or between elements of the hydrologic cycle. Headwater streams compose over two‐thirds of total stream length in a typical river drainage and directly connect the upland and riparian landscape to the rest of the stream ecosystem. Altering headwater streams, e.g., by channelization, diversion through pipes, impoundment and burial, modifies fluxes between uplands and downstream river segments and eliminates distinctive habitats. The large‐scale ecological effects of altering headwaters are amplified by land uses that alter runoff and nutrient loads to streams, and by widespread dam construction on larger rivers (which frequently leaves free‐flowing upstream portions of river systems essential to sustaining aquatic biodiversity). We discuss three examples of large‐scale consequences of cumulative headwater alteration. Downstream eutrophication and coastal hypoxia result, in part, from agricultural practices that alter headwaters and wetlands while increasing nutrient runoff. Extensive headwater alteration is also expected to lower secondary productivity of river systems by reducing stream‐system length and trophic subsidies to downstream river segments, affecting aquatic communities and terrestrial wildlife that utilize aquatic resources. Reduced viability of freshwater biota may occur with cumulative headwater alteration, including for species that occupy a range of stream sizes but for which headwater streams diversify the network of interconnected populations or enhance survival for particular life stages. Developing a more predictive understanding of ecological patterns that may emerge on regional scales as a result of headwater alterations will require studies focused on components and pathways that connect headwaters to river, coastal and terrestrial ecosystems. Linkages between headwaters and downstream ecosystems cannot be discounted when addressing large‐scale issues such as hypoxia in the Gulf of Mexico and global losses of biodiversity.

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Section: Regional Ecosystem Response To Headwater Stream Alterationmentioning

confidence: 99%

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹

Freeman

Pringle

Jackson

2007

J American Water Resour Assoc

485

293

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show abstract

“…Lake Washington, located near APL-UW, is a large body of freshwater that has been used as a testing and performance verification site for the MuST. The lake, formed from a glacial trough, has an approximate surface area of 89 km 2 , a maximum depth of 65 meters, 4 and a large number of natural and man-made targets of interest including many shipwrecks, plane wrecks and man-made debris. Strong currents are not present in the lake, and the average water residence time is approximately 2.3 years.…”

Section: Lake Washington Data Fusion Trialsmentioning

confidence: 99%

Augmentation of Down-Looking 3d Sas Data With a High Frequency Multibeam Sonar

MARSTON,

WILLIAMS,

BRAND

et al. 2023

Synthetic Aperture Sonar and Synthetic Aperture Radar 2023

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“…Anadromous salmonids in the Lake Washington basin include sockeye salmon, Chinook salmon, coho salmon, and steelhead (O. mykiss). Sockeye salmon are by far the most abundant anadromous salmonid in the basin with adult returns of sockeye salmon exceeding 350,000 fish in some years (Fresh and Lucchetti 2000).…”

Section: Study Sitementioning

confidence: 99%

Seasonal Movements of Smallmouth Bass in the Lake Washington Ship Canal, Washington

et al. 2012

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Protecting and Restoring the Habitats of Anadromous Salmonids in the Lake Washington Watershed, an Urbanizing Ecosystem

Cited by 3 publications

References 46 publications

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹

Augmentation of Down-Looking 3d Sas Data With a High Frequency Multibeam Sonar

Seasonal Movements of Smallmouth Bass in the Lake Washington Ship Canal, Washington

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Protecting and Restoring the Habitats of Anadromous Salmonids in the Lake Washington Watershed, an Urbanizing Ecosystem

Cited by 3 publications

References 46 publications

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales1

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales1

Augmentation of Down-Looking 3d Sas Data With a High Frequency Multibeam Sonar

Seasonal Movements of Smallmouth Bass in the Lake Washington Ship Canal, Washington

Contact Info

Product

Resources

About

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹

Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological Integrity at Regional Scales¹