Investigations into the Early Life History of Naturally Produced Spring Chinook Salmon and Summer Steelhead in the Grande Ronde River Basin : Annual Report 2000 : Project Period 1 October 1999 to 30 November 2000.

Monzyk, Fred R.

Oregon. Department of Fish and Wildlife.

关键词: Chinook Salmon - Seasonal Distribution - Grande Ronde River Watershed (Or. And Wash.);    Abundance;    Steelhead (Fish) - Seasonal Distribution - Grande Ronde River Watershed (Or. And Wash.);    Juveniles;    Salmon;   

DOI  :  10.2172/798754
RP-ID  :  DOE/BP-00003076-1
RP-ID  :  00003076
RP-ID  :  798754

美国|英语

来源: UNT Digital Library

【 摘 要 】

The authors determined migration timing and abundance of juvenile spring chinook salmon Oncorhynchus tshawytscha and juvenile steelhead/rainbow trout O. mykiss from three populations in the Grande Ronde River basin. Based on migration timing and abundance, two distinct life-history strategies of juvenile spring chinook and O.mykiss could be distinguished. An early migrant group left upper rearing areas from July through January with a peak in the fall. A late migrant group descended from upper rearing areas from February through June with a peak in the spring.