Winter chilling speeds spring development of temperate butterflies

Tree phenology responses to winter chilling, spring warming, at north and south range limits

warming, at north and south range limits James S. Clark*, Carl Salk, Jerry Melillo and Jacqueline Mohan Nicholas School of the Environment, Duke University, Durham, North Carolina 27705, USA; Department of Statistical Science, Duke University, Durham, North Carolina 27705, USA; Institute of Behavioral Science, University of Colorado, Boulder, Colorado 80309, USA; International Institute for App...

Growth strategies and optimal body size in temperate pararginii butterflies.

In temperate insects the evolution of growth strategies and the optimal age and size at maturity will depend strongly on seasonal variation in temperature and other resources. However, compared to photoperiod, temperature itself is a relatively poor predictor of seasonal change and timing decisions in insects are often most strongly influenced by the photoperiod. Here I review the evolution of ...

The Impact of Winter and Spring Temperatures on Temperate Tree Budburst Dates: Results from an Experimental Climate Manipulation

Budburst phenology is a key driver of ecosystem structure and functioning, and it is sensitive to global change. Both cold winter temperatures (chilling) and spring warming (forcing) are important for budburst. Future climate warming is expected to have a contrasting effect on chilling and forcing, and subsequently to have a non-linear effect on budburst timing. To clarify the different effects...

Winter to spring variations of chromophoric dissolved organic matter in a temperate estuary (Po River, northern Adriatic Sea).

The light absorbing fraction of dissolved organic carbon (DOC), known as chromophoric dissolved organic matter (CDOM) showed wide seasonal variations in the temperate estuarine zone in front of the Po River mouth. DOC concentrations increased from winter through spring mainly as a seasonal response to increasing phytoplankton production and thermohaline stratification. The monthly dependence of...

Current Medical Research Winter – Spring 2013 Richard