Contrasting effects of ocean warming on different components of plant-herbivore interactions

MARINE POLLUTION BULLETIN

卷:134

Article

Pages, Jordi F.¹  Smith, Timothy M.^2,3  Tomas, Fiona^4,5  Sanmarti, Neus⁶  Boada, Jordi³  De Bari, Harriet³  Perez, Marta⁶  Romero, Javier⁶  Arthur, Rohan^3,7  Alcoverro, Teresa^3,7 

[1] Bangor Univ, Sch Ocean Sci, Menai Bridge, Gwynedd, Wales

[2] Deakin Univ, Ctr Integrat Ecol, Sch Life & Environm Sci, Geelong, Vic, Australia

[3] CSIC, CEAB, Acces Cola St Francesc 14, Blanes, Catalunya, Spain

[4] UIB, Inst Mediterrani Estudis Avancats, IMEDEA, CSIC, Miquel Marques 21, Esporles, Illes Balears, Spain

[5] Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USA

[6] Univ Barcelona, Dept Ecol, Fac Biol, Diagonal 643, Barcelona, Catalonia, Spain

[7] Nat Conservat Fdn, Oceans & Coasts Program, 3076-5,4th Cross,Gokulam Pk, Mysore, Karnataka, India

关键词: Climate change;    Macroalgae;    Mediterranean;    Seagrass;    Sea urchin;    Temperature;   

DOI  :  10.1016/j.marpolbul.2017.10.036

来源: Elsevier

【 摘 要 】

There is increasing uncertainty of how marine ecosystems will respond to rising temperatures. While studies have focused on the impacts of warming on individual species, knowledge of how species interactions are likely to respond is scant. The strength of even simple two-species interactions is influenced by several interacting mechanisms, each potentially changing with temperature. We used controlled experiments to assess how plan-herbivore interactions respond to temperature for three structural dominant macrophytes in the Mediterranean and their principal sea urchin herbivore. Increasing temperature differentially influenced plant-specific growth, sea urchin growth and metabolism, consumption rates and herbivore preferences, but not movement behaviour. Evaluating these empirical observations against conceptual models of plant-herbivore performance, it appears likely that while the strength of herbivory may increase for the tested macroalga, for the two dominant seagrasses, the interaction strength may remain relatively unchanged or even weaken as temperatures rise. These results show a clear set of winners and losers in the warming Mediterranean as the complex factors driving species interactions change.

【 授权许可】

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