DOI: 10.1111/gcb.13872
Scopus记录号: 2-s2.0-85030476884
论文题名: Phenological and distributional shifts in ichthyoplankton associated with recent warming in the northeast Pacific Ocean
作者: Auth T.D. ; Daly E.A. ; Brodeur R.D. ; Fisher J.L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 1 起始页码: 259
结束页码: 272
语种: 英语
英文关键词: California Current
; El Niño
; fish larvae
; ichthyoplankton
; Pacific Ocean
; phenology
; warm blob
Scopus关键词: climate change
; El Nino
; global warming
; ichthyoplankton
; pelagic fish
; phenology
; population migration
; spatial distribution
; spawning population
; warm water
; California Current
; Pacific Ocean
; Pacific Ocean (Northeast)
; Engraulis mordax
; Merluccius productus
; Sardinops sagax
英文摘要: Understanding changes in the migratory and reproductive phenology of fish stocks in relation to climate change is critical for accurate ecosystem-based fisheries management. Relocation and changes in timing of reproduction can have dramatic effects upon the success of fish populations and throughout the food web. During anomalously warm conditions (1–4°C above normal) in the northeast Pacific Ocean during 2015–2016, we documented shifts in timing and spawning location of several pelagic fish stocks based on larval fish samples. Total larval concentrations in the northern California Current (NCC) during winter (January–March) 2015 and 2016 were the highest observed since annual collections first occurred in 1998, primarily due to increased abundances of Engraulis mordax (northern anchovy) and Sardinops sagax (Pacific sardine) larvae, which are normally summer spawning species in this region. Sardinops sagax and Merluccius productus (Pacific hake) exhibited an unprecedented early and northward spawning expansion during 2015–16. In addition, spawning duration was greatly increased for E. mordax, as the presence of larvae was observed throughout the majority of 2015–16, indicating prolonged and nearly continuous spawning of adults throughout the warm period. Larvae from all three of these species have never before been collected in the NCC as early in the year. In addition, other southern species were collected in the NCC during this period. This suggests that the spawning phenology and distribution of several ecologically and commercially important fish species dramatically and rapidly changed in response to the warming conditions occurring in 2014–2016, and could be an indication of future conditions under projected climate change. Changes in spawning timing and poleward migration of fish populations due to warmer ocean conditions or global climate change will negatively impact areas that were historically dependent on these fish, and change the food web structure of the areas that the fish move into with unforeseen consequences. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110590
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Pacific States Marine Fisheries Commission, Newport, OR, United States; Cooperative Institute for Marine Resources Studies, Oregon State University, Newport, OR, United States; Northwest Fisheries Science Center, NOAA Fisheries, Newport, OR, United States
Recommended Citation:
Auth T.D.,Daly E.A.,Brodeur R.D.,et al. Phenological and distributional shifts in ichthyoplankton associated with recent warming in the northeast Pacific Ocean[J]. Global Change Biology,2018-01-01,24(1)