Spawning aggregations act as a bottleneck influencing climate change impacts on a critically endangered reef fish

被引:22
作者
Asch, Rebecca G. [1 ]
Erisman, Brad [2 ]
机构
[1] East Carolina Univ, Dept Biol, Howell Sci Complex, Greenville, NC 27858 USA
[2] Univ Texas Austin, Marine Sci Inst, Port Aransas, TX USA
关键词
climate change projections; coral reef fishes; fish spawning aggregations; greater Caribbean; Nassau Grouper; phenology; species distribution modelling; EPINEPHELUS-STRIATUS; OCEAN ACIDIFICATION; MARINE; REPRODUCTION; VARIABILITY; FISHERIES; SHIFTS; CONSERVATION; FLUCTUATIONS; RECRUITMENT;
D O I
10.1111/ddi.12809
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Aim Most projections of how climate change will affect species distributions and phenology are based on a species' most conspicuous life stage. However, not all life stages are equally sensitive to temperature. Among fishes, spawning adults often have narrower thermal tolerances than other life stages and may constrain population responses to climate change. We tested this hypothesis using data on Nassau Grouper (Epinephelus striatus), an endangered coral reef fish. Location Methods Greater Caribbean. Species distribution models of spawning and nonspawning adults were compared to determine which environmental variables exerted the greatest influence on grouper distribution. We calculated the thermal niche and ecological niche breadth of both life stages. An earth system model was applied to project how species distribution and phenology shift under two climate change scenarios. Results Main Conclusions Sea surface temperature and seasonal temperature gradients affected the distribution of both spawning and nonspawning adults, but these life stages differed in their preferred temperatures and reaction to oceanic currents. While the two life stages exhibited similar ecological niche breadth, the thermal niche of spawners was narrower. By 2081-2100, potential spawning habitat was projected to decline under a business-as-usual scenario by 82% relative to 1981-2000, whereas suitable habitat for nonspawners decreased by 46%. Poleward shifts in latitude occurred 3.8-4.2 times faster for spawners than nonspawners. These changes were attributed to rising temperatures, whereas hydrographical changes did not have a substantial impact. Spawning phenology changed little, with a slight contraction in spawning season but a large reduction in spawning probability across all months. A narrow thermal tolerance range among spawning fishes indicates that this life stage may be a bottleneck constraining responses to climate change. Future research should consider the reaction of each life stage to changing conditions. Conservation of E. striatus should take shifting distribution and phenology into account, as climate effects may exacerbate population declines due to fishing and reduce the efficacy of conservation measures.
引用
收藏
页码:1712 / 1728
页数:17
相关论文
共 85 条
[1]   Combining projected changes in species richness and composition reveals climate change impacts on coastal Mediterranean fish assemblages [J].
Albouy, Camille ;
Guilhaumon, Francois ;
Araujo, Miguel B. ;
Mouillot, David ;
Leprieur, Fabien .
GLOBAL CHANGE BIOLOGY, 2012, 18 (10) :2995-3003
[2]   Why fishing magnifies fluctuations in fish abundance [J].
Anderson, Christian N. K. ;
Hsieh, Chih-Hao ;
Sandin, Stuart A. ;
Hewitt, Roger ;
Hollowed, Anne ;
Beddington, John ;
May, Robert M. ;
Sugihara, George .
NATURE, 2008, 452 (7189) :835-839
[3]  
[Anonymous], 2012, FISH FISH SER, DOI [DOI 10.1007/978-94-007-1980-4, 10.1007/978-94-007-1980-4]
[4]  
[Anonymous], 2010, Gasping Fish and Panting Squids: Oxygen, Temperature and the Growth of Water-Breathing Animals
[5]  
[Anonymous], 2013, CONTRIBUTION WORKING, DOI 10.1017/CBO9781107415324
[6]   The importance of biotic interactions for modelling species distributions under climate change [J].
Araujo, Miguel B. ;
Luoto, Miska .
GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2007, 16 (06) :743-753
[7]   Climate change threatens European conservation areas [J].
Araujo, Miguel B. ;
Alagador, Diogo ;
Cabeza, Mar ;
Nogues-Bravo, David ;
Thuiller, Wilfried .
ECOLOGY LETTERS, 2011, 14 (05) :484-492
[8]   Climate change and decadal shifts in the phenology of larval fishes in the California Current ecosystem [J].
Asch, Rebecca G. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2015, 112 (30) :E4065-E4074
[9]   Dynamic height: A key variable for identifying the spawning habitat of small pelagic fishes [J].
Asch, Rebecca G. ;
Checkley, David M., Jr. .
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, 2013, 71 :79-91
[10]   A new model to assess the probability of occurrence of a species, based on presence-only data [J].
Beaugrand, G. ;
Lenoir, S. ;
Ibanez, F. ;
Mante, C. .
MARINE ECOLOGY PROGRESS SERIES, 2011, 424 :175-190