nieuwe zoekopdracht
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Estuarine and early-marine survival of transported and in-river migrant Snake River spring Chinook salmon smolts
Rechisky, E.L.; Welch, D.W.; Porter, A.D.; Jacobs-Scott, M.C.; Winchell, P.M.; McKern, J.L. (2012). Estuarine and early-marine survival of transported and in-river migrant Snake River spring Chinook salmon smolts. NPG Scientific Reports 2(448): 9 pp. http://dx.doi.org/10.1038/srep00448
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoorden
    Overleving; Smolts; Marien; Brak water

Auteurs  Top 
  • Rechisky, E.L.
  • Welch, D.W.
  • Porter, A.D.
  • Jacobs-Scott, M.C.
  • Winchell, P.M.
  • McKern, J.L.

Abstract
    Many juvenile Snake River Chinook salmon are transported downriver to avoid hydroelectric dams in the Columbia River basin. As mortality to the final dam is ~50%, transported fish should return as adults at roughly double the rate of nontransported fish; however, the benefit of transportation has not been realized consistently. “Delayed” mortality caused by transportation-induced stress is one hypothesis to explain reduced returns of transported fish. Differential timing of ocean entry is another. We used a large-scale acoustic telemetry array to test whether survival of transported juvenile spring Chinook is reduced relative to in-river migrant control groups after synchronizing ocean entry timing. During the initial 750 km, 1 month long migration after release, we found no evidence of decreased estuarine or ocean survival of transported groups; therefore, decreased survival to adulthood for transported Chinook is likely caused by factors other than delayed effects of transportation, such as earlier ocean entry.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ, voor meer informatie contacteer .