GSTDTAP  > 气候变化
DOI10.1111/gcb.14483
Effects of climate and demography on reproductive phenology of a harvested marine fish population
Rogers, Lauren A.; Dougherty, Annette B.
2019-02-01
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2019
卷号25期号:2页码:708-720
文章类型Article
语种英语
国家USA
英文摘要

Shifts in phenology are a well-documented ecological response to changes in climate, which may or may not be adaptive for a species depending on the climate sensitivity of other ecosystem processes. Furthermore, phenology may be affected by factors in addition to climate, which may accentuate or dampen climate-driven phenological responses. In this study, we investigate how climate and population demographic structure jointly affect spawning phenology of a fish species of major commercial importance: walleye pollock (Gadus chalcogrammus). We use 32 years of data from ichthyoplankton surveys to reconstruct timing of pollock reproduction in the Gulf of Alaska and find that the mean date of spawning has varied by over 3 weeks throughout the last >3 decades. Climate clearly drives variation in spawn timing, with warmer temperatures leading to an earlier and more protracted spawning period, consistent with expectations of advanced spring phenology under warming. However, the effects of temperature were nonlinear, such that additional warming above a threshold value had no additional effect on phenology. Population demographics were equally as important as temperature: An older and more age-diverse spawning stock tended to spawn earlier and over a longer duration than a younger stock. Our models suggest that demographic shifts associated with sustainable harvest rates could shift the mean spawning date 7 days later and shorten the spawning season by 9 days relative to an unfished population, independent of thermal conditions. Projections under climate change suggest that spawn timing will become more stable for walleye pollock in the future, but it is unknown what the consequences of this stabilization will be for the synchrony of first-feeding larvae with production of zooplankton prey in spring. With ongoing warming in the world's oceans, knowledge of the mechanisms underlying reproductive phenology can improve our ability to monitor and manage species under changing climate conditions.


英文关键词age truncation hatch dates ichthyoplankton larval fish match-mismatch recruitment spawning temperature walleye pollock
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000456028900026
WOS关键词POLLOCK THERAGRA-CHALCOGRAMMA ; LARVAL WALLEYE POLLOCK ; ANNUAL EGG-PRODUCTION ; SHELIKOF-STRAIT ; ATLANTIC COD ; BERING-SEA ; EMBRYONIC-DEVELOPMENT ; OVARIAN MATURATION ; NORTHERN GULF ; SPAWNING TIME
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/17713
专题气候变化
资源环境科学
作者单位NOAA, Alaska Fisheries Sci Ctr, Natl Marine Fisheries Serv, Seattle, WA 98115 USA
推荐引用方式
GB/T 7714
Rogers, Lauren A.,Dougherty, Annette B.. Effects of climate and demography on reproductive phenology of a harvested marine fish population[J]. GLOBAL CHANGE BIOLOGY,2019,25(2):708-720.
APA Rogers, Lauren A.,&Dougherty, Annette B..(2019).Effects of climate and demography on reproductive phenology of a harvested marine fish population.GLOBAL CHANGE BIOLOGY,25(2),708-720.
MLA Rogers, Lauren A.,et al."Effects of climate and demography on reproductive phenology of a harvested marine fish population".GLOBAL CHANGE BIOLOGY 25.2(2019):708-720.
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