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You searched for: Author "Welch, David W." Remove constraint Author: "Welch, David W." Subject rivers Remove constraint Subject: rivers Text Availability Full Text Remove constraint Text Availability: Full Text
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1. Influence of multiple dam passage on survival of juvenile Chinook salmon in the Columbia River estuary and coastal ocean

Author:
Welch, David W.,   et al.   ; Rechisky, Erin L.; Porter, Aswea D.; Jacobs-Scott, Melinda C.; Winchell, Paul M.;     Show all 5 Authors
Source:
Proceedings of the National Academy of Sciences of the United States of America 2013 v.110 no.17 pp. 6883-6888
ISSN:
0027-8424
Subject:
Oncorhynchus tshawytscha; adults; dams (hydrology); estuaries; juveniles; mortality; rivers; spring; telemetry; Columbia River; Pacific Ocean; Snake River
Abstract:
... Multiple dam passage during seaward migration is thought to reduce the subsequent survival of Snake River Chinook salmon. This hypothesis developed because juvenile Chinook salmon from the Snake River, the Columbia River’s largest tributary, migrate >700 km through eight hydropower dams and have lower adult return rates than downstream populations that migrate through only 3 or 4 dams. Using a lar ...
DOI:
10.1073/pnas.1219910110
PubMed:
23576733
PubMed Central:
PMC3637724

2. In situ measurement of coastal ocean movements and survival of juvenile Pacific salmon

Author:
Welch, David W.,   et al.   ; Melnychuk, Michael C.; Payne, John C.; Rechisky, Erin L.; Porter, Aswea D.; Jackson, George D.; Ward, Bruce R.; Vincent, Stephen P.; Wood, Chris C.; Semmens, Jayson;     Show all 10 Authors
Source:
Proceedings of the National Academy of Sciences of the United States of America 2011 v.108 no.21 pp. 8708-8713
ISSN:
0027-8424
Subject:
climate change; fisheries management; juveniles; marine fish; mortality; rivers; salmon; smolts; watersheds; Atlantic Ocean
Abstract:
... Many salmon populations in both the Pacific and Atlantic Oceans have experienced sharply decreasing returns and high ocean mortality in the past two decades, with some populations facing extirpation if current marine survival trends continue. Our inability to monitor the movements of marine fish or to directly measure their survival precludes experimental tests of theories concerning the factors r ...
DOI:
10.1073/pnas.1014044108
PubMed:
21558442
PubMed Central:
PMC3102360