Evans, Lowri E, Hirst, Andrew G, Kratina, Pavel and Beaugrand, Gregory
(2020)
Temperature-mediated changes in zooplankton body size: large scale temporal and spatial analysis.
ECOGRAPHY, 43 (4).
pp. 581-590.
Abstract
<jats:p>Climate warming has been linked with changes in the spatiotemporal distribution of species and the body size structure of ecological communities. Body size is a master trait underlying a host of physiological, ecological and evolutionary processes. However, the relative importance of environmental drivers and life history strategies on community body size structure across large spatial and temporal scales is poorly understood. We used detailed data of 83 copepod species, monitored over a 57‐year period across the North Atlantic, to test how sea surface temperature, thermal and day length seasonality relate to observed latitudinal‐size clines of the zooplankton community. The genus <jats:italic>Calanus</jats:italic> includes dominant taxa in the North Atlantic that overwinter at ocean depth. Thus we compared the copepod community size structure with and without <jats:italic>Calanus</jats:italic> species, to partition the influence of this life history strategy. The mean community body size of copepods was positively associated with latitude and negatively associated with temperature, suggesting that these communities follow Bergmann's rule. Including <jats:italic>Calanus</jats:italic> species strengthens these relationships due to their larger than average body sizes and high seasonal abundances, indicating that the latitudinal‐size cline may be adaptive. We suggest that seasonal food availability prevents high abundance of smaller‐sized copepods at higher latitudes, and that active vertical migration of dominant pelagic species can increase their survival rate over the resource‐poor seasons. These findings improve our understanding of the impacts that climate warming has on ecological communities, with potential consequences for trophic interactions and biogeochemical processes that are well known to be size dependent.</jats:p>
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | biogeography, body size, climate warming, continuous plankton recorder, seasonality, species distribution, temperature, traits, zooplankton |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 02 Jan 2020 15:41 |
| Last Modified: | 19 Sep 2023 00:42 |
| DOI: | 10.1111/ecog.04631 |
| Open Access URL: | https://onlinelibrary.wiley.com/doi/full/10.1111/e... |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3068347 |
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