EARLY MARINE ECOLOGY OF JUVENILE CHUM SALMON (ONCORHYNCHUS KETA)
This report does not constitute a publication and is for information only. All data herein are to be considered provisional and shall not be cited without the author’s permission. MANUSCRIPT IS NOT TO BE CITED WITHOUT THE AUTHORS ’ PERMISSION Little is known about the estuarine residence of juvenile...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.4913 http://www.arlis.org/docs/vol1/E/775487223.pdf |
| Summary: | This report does not constitute a publication and is for information only. All data herein are to be considered provisional and shall not be cited without the author’s permission. MANUSCRIPT IS NOT TO BE CITED WITHOUT THE AUTHORS ’ PERMISSION Little is known about the estuarine residence of juvenile chum salmon (Oncorhynchus keta) in western Alaska. It is at this stage, however, that juveniles might experience high mortality rates that may ultimately determine year class strength. Recent fluctuations in the abundance of chum salmon in the Kuskokwim River have demonstrated a need for more information on chum salmon life history, but particularly on factors impacting the critical estuarine life stage. Here we present results on spatial and temporal patterns of estuarine distribution, diet, and condition of chum salmon juveniles in 2003 and 2004 in Kuskokwim Bay. In addition, we used spatially-explicit foraging/bioenergetic modeling to assess the growth potential of Kuskokwim Bay habitats for outmigrating juvenile chum salmon in 2004, based on an intensive field sampling program in that year. Based on zooplankton abundance, water temperatures |
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