globalchange  > 全球变化的国际研究计划
DOI: 10.1139/cjfas-2018-0152
WOS ID: WOS:000477599400011
Title:
Warm winters reduce landscape-scale variability in the duration of egg incubation for coho salmon (Oncorhynchus kisutch) on the Copper River Delta, Alaska
Author: Adelfio, Luca A.1,2; Wondzell, Steven M.3; Mantua, Nathan J.4; Reeves, Gordon H.3
Corresponding Author: Adelfio, Luca A.
Source Publication: CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
ISSN: 0706-652X
EISSN: 1205-7533
Publishing Year: 2019
Volume: 76, Issue:8, Pages:1362-1375
Language: 英语
WOS Keyword: SOUTH-CENTRAL ALASKA ; STREAMBED TEMPERATURE DYNAMICS ; CLIMATE-CHANGE ; WATER TEMPERATURE ; CHINOOK SALMON ; THERMAL HETEROGENEITY ; CARNATION-CREEK ; BRITISH-COLUMBIA ; SOCKEYE-SALMON ; PACIFIC SALMON
WOS Category: Fisheries ; Marine & Freshwater Biology
WOS Research Area: Fisheries ; Marine & Freshwater Biology
English Abstract:

We quantified the sum of daily mean temperature above 0 degrees C and modeled incubation duration using water temperature data collected at 12 coho salmon (Oncorhynchus kisutch) spawning sites during two incubation periods with cool, snowdominant conditions and three incubation periods with anomalously warm, rain-transitional conditions, a proxy for a future climate scenario. Warmer water temperatures during warm-rain-transitional winters yielded a 58-day reduction in the median duration of egg incubation; however, the magnitude of change at individual sites varied widely and was controlled by water source. At groundwater-fed sites, temperature variations were strongly attenuated, leading to small interannual differences in incubation duration that were relatively insensitive to short-term changes in air temperature. In contrast, modeled incubation duration was shortened by up to 3 months during warm-rain-transitional winters at precipitation-fed sites. Remarkably, our modeling showed increased uniformity in incubation duration across the landscape during warm-rain-transitional winters. The potential loss of diversity in incubation duration during warmer winters, in isolation, may reduce portfolio effects in this region's coho salmon population by promoting greater synchronization in the time of spawning.


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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/143998
Appears in Collections:全球变化的国际研究计划

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Affiliation: 1.US Forest Serv, USDA, Chugach Natl Forest, POB 280, Cordova, AK 99574 USA
2.Oregon State Univ, Water Resources Grad Program, 116 Gilmore Hall, Corvallis, OR 97331 USA
3.US Forest Serv, USDA, Pacific Northwest Res Stn, 3200 SW Jefferson Way, Corvallis, OR 97331 USA
4.NOAA, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, 110 McAllister Way, Santa Cruz, CA 95060 USA

Recommended Citation:
Adelfio, Luca A.,Wondzell, Steven M.,Mantua, Nathan J.,et al. Warm winters reduce landscape-scale variability in the duration of egg incubation for coho salmon (Oncorhynchus kisutch) on the Copper River Delta, Alaska[J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,2019-01-01,76(8):1362-1375
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