Climate change and the optimal arrival of migratory birds. Export

@article{citeulike:1211385, abstract = {Recent climate change has sparked an interest in the timing of biological events, which is a general problem in life-history evolution. Reproduction in many organisms breeding in seasonal environments, e.g. migratory birds, is dependent on the exploitation of a short but rich food supply. If the seasonal timing of the food peak advances owing to climate change, then one would expect the bird to track those changes, hence, initiate migration and breeding earlier. However, when there is competition for territories and a risk of pre-breeding mortality, the optimal response to a shifting food distribution is no longer obvious. We develop a theoretical model to study how the optimal arrival time depends on the mean and variance of the food distribution, the degree of competition for territories and the risk of mortality. In general, the optimal shift in arrival date should never be as extreme as the shift in food peak date. Our results also show that we should expect the high variation of trends in arrival date observed among migratory birds, even if migration and information about climate change were unconstrained.}, address = {Department of Theoretical Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden. niclas.jonzen@teorkol.lu.se}, author = {Jonz\'{e}n, N. and Hedenstr\"{o}m, A. and Lundberg, P.}, citeulike-article-id = {1211385}, citeulike-linkout-0 = {http://dx.doi.org/10.1098/rspb.2006.3719}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/17148256}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=17148256}, day = {22}, doi = {10.1098/rspb.2006.3719}, issn = {0962-8452}, journal = {Proc Biol Sci}, keywords = {2576aewa}, month = {January}, number = {1607}, pages = {269--274}, posted-at = {2007-04-05 18:34:53}, priority = {2}, title = {Climate change and the optimal arrival of migratory birds.}, url = {http://dx.doi.org/10.1098/rspb.2006.3719}, volume = {274}, year = {2007} }

TY - JOUR ID - citeulike:1211385 L3 - citeulike-article-id:1211385 N2 - Recent climate change has sparked an interest in the timing of biological events, which is a general problem in life-history evolution. Reproduction in many organisms breeding in seasonal environments, e.g. migratory birds, is dependent on the exploitation of a short but rich food supply. If the seasonal timing of the food peak advances owing to climate change, then one would expect the bird to track those changes, hence, initiate migration and breeding earlier. However, when there is competition for territories and a risk of pre-breeding mortality, the optimal response to a shifting food distribution is no longer obvious. We develop a theoretical model to study how the optimal arrival time depends on the mean and variance of the food distribution, the degree of competition for territories and the risk of mortality. In general, the optimal shift in arrival date should never be as extreme as the shift in food peak date. Our results also show that we should expect the high variation of trends in arrival date observed among migratory birds, even if migration and information about climate change were unconstrained. IS - 1607 JF - Proc Biol Sci SN - 0962-8452 AD - Department of Theoretical Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden. niclas.jonzen@teorkol.lu.se EP - 274 TI - Climate change and the optimal arrival of migratory birds. VL - 274 SP - 269 KW - 2576aewa AU - Jonzén, N AU - Hedenström, A AU - Lundberg, P PY - 2007/01/22/ UR - http://dx.doi.org/10.1098/rspb.2006.3719 ER -