GSTDTAP  > 气候变化
DOI10.1111/gcb.14474
Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod
Langangen, Oystein1; Farber, Leonie1; Stige, Leif C.1; Diekert, Florian K.1,2; Barth, Julia M., I1; Matschiner, Michael1,3; Berg, Paul R.1,4; Star, Bastiaan1; Stenseth, Nils Chr1,4; Jentoft, Sissel1; Durant, Joel M.1
2019
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2019
卷号25期号:1页码:134-143
文章类型Article
语种英语
国家Norway; Germany; Switzerland
英文摘要

Climate warming and harvesting affect the dynamics of species across the globe through a multitude of mechanisms, including distribution changes. In fish, migrations to and distribution on spawning grounds are likely influenced by both climate warming and harvesting. The Northeast Arctic (NEA) cod (Gadus morhua) performs seasonal migrations from its feeding grounds in the Barents Sea to spawning grounds along the Norwegian coast. The distribution of cod between the spawning grounds has historically changed at decadal scales, mainly due to variable use of the northern and southern margins of the spawning area. Based on historical landing records, two major hypotheses have been put forward to explain these changes: climate and harvesting. Climate could affect the distribution through, for example, spatial habitat shifts. Harvesting could affect the distribution through impacting the demographic structure. If demographic structure is important, theory predicts increasing spawner size with migration distance. Here, we evaluate these hypotheses with modern data from a period (2000-2016) of increasing temperature and recovering stock structure. We first analyze economic data from the Norwegian fisheries to investigate geographical differences in size of spawning fish among spawning grounds, as well as interannual differences in mean latitude of spawning in relation to changes in temperature and demographic parameters. Second, we analyze genetically determined fish sampled at the spawning grounds to unambiguously separate between migratory NEA cod and potentially smaller sized coastal cod of local origin. Our results indicate smaller spawners farther away from the feeding grounds, hence not supporting the hypothesis that harvesting is a main driver for the contemporary spawning ground distribution. We find a positive correlation between annual mean spawning latitude and temperature. In conclusion, based on contemporary data, there is more support for climate compared to harvesting in shaping spawning ground distribution in this major fish stock in the North Atlantic Ocean.


英文关键词climate change demography economic data genetic data size truncation spawning distribution
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000453370700012
WOS关键词NORTHEAST ARCTIC COD ; LONG-TERM CHANGE ; GADUS-MORHUA ; LIFE-HISTORY ; SPATIAL-DISTRIBUTION ; GENOMIC DIVERGENCE ; MIGRATORY BEHAVIOR ; FISH ; STOCK ; MANAGEMENT
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/16566
专题气候变化
资源环境科学
作者单位1.Univ Oslo, Dept Biosci, CEES, Oslo, Norway;
2.Heidelberg Univ, Dept Econ, Heidelberg, Germany;
3.Univ Basel, Zool Inst, Basel, Switzerland;
4.Univ Agder, Dept Nat Sci, CCR, Kristiansand, Norway
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GB/T 7714
Langangen, Oystein,Farber, Leonie,Stige, Leif C.,et al. Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod[J]. GLOBAL CHANGE BIOLOGY,2019,25(1):134-143.
APA Langangen, Oystein.,Farber, Leonie.,Stige, Leif C..,Diekert, Florian K..,Barth, Julia M., I.,...&Durant, Joel M..(2019).Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod.GLOBAL CHANGE BIOLOGY,25(1),134-143.
MLA Langangen, Oystein,et al."Ticket to spawn: Combining economic and genetic data to evaluate the effect of climate and demographic structure on spawning distribution in Atlantic cod".GLOBAL CHANGE BIOLOGY 25.1(2019):134-143.
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