Title Thermal limits of burrowing capacity and linked to oxygen availability and size in the Antarctic clam Laternula elliptica
Author Peck, L.S.; Morley, S.A.; Pörtner, H.; Clark, M.S.
Author Affil Peck, L.S., British Antarctic Survey, Cambridge, United Kingdom. Other: Alfred Wegener Institut fur Polar und Meeresforschung, Federal Republic of Germany
Source Oecologia, 154(3), p.479-484, . Publisher: Springer, Heidelberg; Berlin, Federal Republic of Germany. ISSN: 0029- 8549
Publication Date Dec. 2007
Notes In English. Based on Publisher- supplied data Ant. Acc. No: 88861
Index Terms Antarctica; Southern Ocean; biochemistry; Bivalvia; climate change; climate effects; ecology; International Polar Year 2007-08; Invertebrata; IPY 2007-08 Research Publications; Mollusca; oxygen; physiology; temperature
Abstract Animal responses to changing environments are most commonly studied in relation to temperature change. The current paradigm for marine ectotherms is that temperature limits are set through oxygen limitation. Oxygen limitation leads to progressive reductions in capacity to perform work or activity, and these are more important and proximate measures of a population’s ability to survive. Here we measured the ability of a large Antarctic clam to rebury when removed from sediment at temperatures between -1.5 and 7.5 °C and at three oxygen concentrations, 10.2, 20.5 and 27.7%. The proportion of the population capable of reburying declined rapidly and linearly with temperature from around 65% at 0 °C to 0% at 6 °C in normoxia. (mod. journ. abst.)
URL http://hdl.handle.net/10.1007/s00442-007-0858-0
Publication Type journal article
Record ID 300929