Patrick Connolly, Ph.D.

Science and Products

• Science
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  October 25, 2013

  Dam removal: synthesis of ecological and physical responses

  Dam decommissioning is rapidly emerging as an important river restoration strategy in the U.S., with several major removals recently completed or in progress. But few studies have evaluated the far-reaching consequences of these significant environmental perturbations, especially those resulting from removals of large (>10-15 m tall) structures during the last decade. In particular, interactions b

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  John Wesley Powell Center for Analysis and Synthesis

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  October 25, 2013

  Dam removal: synthesis of ecological and physical responses

  Dam decommissioning is rapidly emerging as an important river restoration strategy in the U.S., with several major removals recently completed or in progress. But few studies have evaluated the far-reaching consequences of these significant environmental perturbations, especially those resulting from removals of large (>10-15 m tall) structures during the last decade. In particular, interactions b

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  December 31, 2010

  Climate Change Threats to Fish Habitat Connectivity

  Many fish species, including mountain whitefish and bull trout, need a variety of habitat types throughout their different life stages that include appropriate water temperatures, flows, refugia from predators, and adequate food. Key to a fish finding and using these different habitats is the connectivity between them. Changing conditions in the future, including increased air and water temperatur

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  Climate Adaptation Science Centers

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  December 31, 2010

  Climate Change Threats to Fish Habitat Connectivity

  Many fish species, including mountain whitefish and bull trout, need a variety of habitat types throughout their different life stages that include appropriate water temperatures, flows, refugia from predators, and adequate food. Key to a fish finding and using these different habitats is the connectivity between them. Changing conditions in the future, including increased air and water temperatur

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• Publications
  Filter Total Items: 84

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  February 1, 2018

  Wind River Subbasin Restoration, Annual report of U.S. Geological Survey activities, January 2016 through December 2016

  We used Passive Integrated Transponder (PIT)-tagging and a series of instream PIT-tag interrogation systems (PTISs) to investigate life-histories, populations, and efficacy of habitat restoration actions for steelhead Oncorhynchus mykiss in the Wind River subbasin, WA. Our tagging focused on parr in headwaters areas of the subbasin and our instream readers provided information on movement of these

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  September 12, 2017

  Risk assessment for the reintroduction of anadromous salmonids upstream of Chief Joseph and Grand Coulee Dams, Northeastern Washington

  The Upper Columbia United Tribes (UCUT; Spokane, Colville, Kootenai, Coeur d’Alene, and Kalispel Tribes) and Washington Department of Fish and Wildlife want to reintroduce anadromous salmonids to their historical range to restore ecosystem function and lost cultural and spiritual relationships in the upper Columbia River, northeastern Washington. The UCUT contracted with the U.S. Geological Survey

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  Ecosystems, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL), Fish Health Program (FHP)

  August 11, 2017

  Dam removal: Listening in

  Dam removal is widely used as an approach for river restoration in the United States. The increase in dam removals—particularly large dams—and associated dam-removal studies over the last few decades motivated a working group at the USGS John Wesley Powell Center for Analysis and Synthesis to review and synthesize available studies of dam removals and their findings. Based on dam removals thus far

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  Ecosystems, Natural Hazards, Water Resources, Fisheries Program (unpublished), Volcano Hazards, Volcano Science Center, Forest and Rangeland Ecosystem Science Center, John Wesley Powell Center for Analysis and Synthesis, Oregon Water Science Center, Pacific Coastal and Marine Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  March 17, 2017

  Wind River Subbasin Restoration, annual report of U.S. Geological Survey activities: Parr monitoring and instream passive integrated transponder detection, January 1, 2015 – December 31, 2015

  We used Passive Integrated Transponder (PIT)-tagging and a series of instream PIT-tag interrogation systems (PTIS) to investigate life-histories, populations, and efficacy of habitat restoration actions for steelhead Oncorhynchus mykiss in the Wind River subbasin, WA. Our tagging focused on parr in headwater areas of the subbasin and our PTISs provide information on movement of these parr, which i

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  Ecosystems, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  January 19, 2017

  Instream PIT-tag detection system. Report B

  Abstract not available 

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center

  September 1, 2016

  Synthesis of common management concerns associated with dam removal

  Managers make decisions regarding if and how to remove dams in spite of uncertainty surrounding physical and ecological responses, and stakeholders often raise concerns about certain negative effects, regardless of whether or not these concerns are warranted at a particular site. We used a dam-removal science database supplemented with other information sources to explore seven frequently-raised c

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  Ecosystems, Species Management Research Program, Fort Collins Science Center, John Wesley Powell Center for Analysis and Synthesis, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  April 6, 2016

  Salmon and steelhead in the White Salmon River after the removal of Condit Dam–Planning efforts and recolonization results

  Condit Dam, at river kilometer 5.3 on the White Salmon River, Washington, was breached in 2011 and completely removed in 2012. This action opened habitat to migratory fish for the first time in 100 years. The White Salmon Working Group was formed to create plans for fish salvage in preparation for fish recolonization and to prescribe the actions necessary to restore anadromous salmonid populations

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  Ecosystems, Fisheries Program (unpublished), Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  September 6, 2015

  Influence of stream characteristics and age class interactions on populations of coastal cutthroat trout

  No abstract available.

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center

  August 3, 2015

  Biomass of coastal cutthroat trout in unlogged and previously clearcut basins in the central Coast Range of Oregon

  Populations of coastal cutthroat trout Oncorhynchus clarki clarki were sampled in 16 Oregon headwater streams during 1991–1993. These streams were above upstream migration barriers and distributed among basins that had been logged 20–30 and 40–60 years ago and basins that had not been logged but had burned 125–150 years ago. The objective of our study was to characterize the populations and habita

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center

  May 5, 2015

  Wind River subbasin restoration: Annual report of U.S. Geological Survey activities January 2014 through December 2014

  Executive Summary The Wind River subbasin in southwest Washington State provides habitat for a population of wild Lower Columbia River steelhead Oncorhynchus mykiss, which are listed as threatened under the Endangered Species Act. No hatchery steelhead have been planted in the Wind River subbasin since 1994, and hatchery adults are estimated to be less than one percent of adults in any year (Thoma

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  January 1, 2015

  Biotic and abiotic influences on abundance and distribution of nonnative Chinook salmon and native ESA-listed steelhead in the Wind River, Washington

  Biotic and abiotic factors influence fish populations and distributions. Concerns have been raised about the influence of hatchery fish on wild populations. Carson National Fish Hatchery produces spring Chinook salmon Oncorhynchus tshawytscha in the Wind River, Washington, and some spawn in the river. Managers were concerned that Chinook salmon could negatively affect wild steelhead O. mykiss and

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

  August 7, 2014

  Spatial complexity reduces interaction strengths in the meta-food web of a river floodplain mosaic

  Theory states that both the spatial complexity of landscapes and the strength of interactions between consumers and their resources are important for maintaining biodiversity and the 'balance of nature.' Spatial complexity is hypothesized to promote biodiversity by reducing potential for competitive exclusion; whereas, models show weak trophic interactions can enhance stability and maintain biodiv

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  Ecosystems, Fisheries Program (unpublished), Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
• News
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  October 8, 2015

  Western Fisheries Science News, September 2015 | Issue 3.9

  Using Challenges and Prizes to Find Innovative Solutions

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  February 3, 2014

  Western Fisheries Science News, January 2014 | Issue 2.1

  The Secret Lives of Mountain Whitefish

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