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Population dynamics of the ubiquitous Antarctic benthic amphipod Orchomenella franklini and its vulnerability to environmental change
Citation
Baird, HP and Stark, JS, Population dynamics of the ubiquitous Antarctic benthic amphipod Orchomenella franklini and its vulnerability to environmental change, Polar Biology, 36, (2) pp. 155-167. ISSN 0722-4060 (2013) [Refereed Article]
Copyright Statement
Copyright 2012 Springer-Verlag
DOI: doi:10.1007/s00300-012-1246-8
Abstract
Comprehensive ecological research is still
lacking for many of the species that dominate the Antarctic
benthos, preventing an adequate understanding of their
potential response to environmental change. Here, population
dynamics were explored in one of the most ubiquitous
nearshore Antarctic benthic amphipods, Orchomenella
franklini. Sex, reproductive status and body length were
recorded for over 6,000 individuals, sampled from a variety
of locations and times at Casey station in East Antarctica.
Several life history traits were revealed for O. franklini that
exemplify adaptations predicted for a polar environment.
These include delayed reproduction, extended brood
incubation, low fecundity, longevity and seasonal breeding
linked to the summer phytoplankton bloom. There was also
preliminary evidence of inter-annual and spatial fluctuations
in population structure, potentially reflecting local
environmental heterogeneity such as sea-ice duration. The
influence of both large scale and local environmental
conditions on the ecology of O. franklini provides insight
into the vulnerability of this species to environmental
change.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | Life history strategy |
Research Division: | Biological Sciences |
Research Group: | Ecology |
Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
Objective Division: | Environmental Management |
Objective Group: | Management of Antarctic and Southern Ocean environments |
Objective Field: | Biodiversity in Antarctic and Southern Ocean environments |
UTAS Author: | Baird, HP (Dr Helena Baird) |
ID Code: | 89596 |
Year Published: | 2013 |
Web of Science® Times Cited: | 7 |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2014-03-07 |
Last Modified: | 2014-06-06 |
Downloads: | 0 |
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