Filters: Tags: camouflage (X)9 results (67ms)
Predation by herring gulls (Larus argentatus Coues (sic)) on two rocky intertidal crab species (Carcinus maenas (L.) & Cancer irroratus Say).
Survival, growth, and abundance of pellet-reared and minnow-reared muskellunge stocked in northwestern Iowa
This model was used in Camouflage mismatch in seasonal coat color due to decreased snow duration (Mills et al. 2013, PNAS). Information about this model and analysis can be found at: http://www.pnas.org/content/110/18/7360.abstract.
Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/ele.12568/abstract): Anthropogenic climate change has created myriad stressors that threaten to cause local extinctions if wild populations fail to adapt to novel conditions. We studied individual and population-level fitness costs of a climate change-induced stressor: camouflage mismatch in seasonally colour molting species confronting decreasing snow cover duration. Based on field measurements of radiocollared snowshoe hares, we found strong selection on coat colour molt phenology, such that animals mismatched with the colour of their background experienced weekly survival decreases up to 7%. In the absence of adaptive response, we show that these mortality...
Can Camouflage Keep up with Climate Change? Connecting Climate Projections to Adaptation for the Snowshoe Hare
Snowshoe hares are the primary food source of the federally threatened Canada lynx. In western Montana for example, snowshoe hare make up 96% of lynx diet. In fact, hares are critical players in forest ecosystems because most carnivores prey on them. The main way that snowshoe hares escape predation is through camouflage. In response to changes in day length, snowshoe hares molt seasonally, changing color from brown to white in the winter to blend in with the snowfall and hide from predators. However, due to shorter snow seasons caused by recent changes in climate, snowshoe hares are turning white before it snows, making them more visible to predators. Because 21 other species around the world also undergo these...