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Contrasting effects of ocean warming on different components of plantherbivore interactions

AuthorsPagès, Jordi F.; Smith, Timothy M.; Tomàs, Fiona ; Sanmartí, Neus; Boada, Jordi ; De Bari, Harriet; Pérez, Marta M.; Romero, Javier; Arthur, Rohan ; Alcoverro, Teresa
KeywordsSea urchin
Climate change
Issue Date2017
CitationMarine Pollution Bulletin : DOI:10.1016/j.marpolbul.2017.10.036 (2017)
AbstractThere 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 plantherbivore 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.
DescriptionEste artículo contiene 11 páginas, 6 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/j.marpolbul.2017.10.036
Appears in Collections:(CEAB) Artículos
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