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Oithona similis likes it cool: evidence from two long-term time series
Castellani, C.; Licandro, P.; Fileman, E.; Di Capua, I.; Mazzocchi, M.G. (2016). Oithona similis likes it cool: evidence from two long-term time series. J. Plankton Res. 38(3): 703-717. https://dx.doi.org/10.1093/plankt/fbv104
In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873; e-ISSN 1464-3774, meer
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| Trefwoorden |
Data
Marine Sciences
Marine Sciences > Marine Sciences General
Scientific Community
Scientific Publication
Marien/Kust |
| Author keywords |
time series; copepod; Oithona similis; temperature; Atlantic;Mediterranean |
| Project | Top | Auteurs |
- Association of European marine biological laboratories, meer
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| Auteurs | | Top |
- Castellani, C.
- Licandro, P.
- Fileman, E.
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- Di Capua, I.
- Mazzocchi, M.G., meer
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| Abstract |
We compare the long-term and seasonal patterns of abundance and phenology of the cyclopoid copepod Oithona similis at the L4 site (1988–2013) in the North Atlantic and at the LTER-MC site (1984–2013) in the Mediterranean Sea to investigate whether high temperature limits the occurrence of this species with latitudinal cline. The two sites are well suited to testing this hypothesis as they are characterized by similar chlorophyll a concentration (Chl a) but different temperature [sea surface temperature (SST)]. The abundance of O. similis at L4 was ∼10 times higher than at LTER-MC. Moreover, this species had several peaks of abundance during the year at L4 but a single peak in spring at LTER-MC. The main mode of temporal variability in abundance was seasonal at both sites. The abundance of O. similis was negatively correlated with SST only at LTER-MC, whereas it was positively correlated with Chl a at both sites. Oithona similis had a temperature optimum between 15 and 20°C reaching maximum abundance at ∼16.5°C at LTER-MC, but showed no Chl a optimum at either site. We conclude that the abundance of O. similis increases with prey availability up to 16.5°C and that temperature >20°C represents the main limiting factor for population persistence. |
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