Sunny-side up: ontogenetic variation in egg mass temperatures of the wood frog Rana sylvatica by Ryan Calsbeek, Ava Calsbeek, Isabel Calsbeek

“…Here, we explore finer scale spatial variation within egg masses of the wood frog Rana sylvatica, one of the earliest amphibians to breed during the North American spring. We compared peripheral and core temperatures of egg masses that were exposed either to 1) ambient sunlight from above, or 2) sunlight reflected by a mirror from below. …”
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Atmospheric teleconnection influence on North American land surface phenology by Matthew P Dannenberg, Erika K Wise, Mark Janko, Taehee Hwang, W Kolby Smith

“…These results suggest that knowledge of atmospheric conditions over the Pacific and Atlantic Oceans increases the predictability of North American spring phenology. A more robust consideration of the complexity of the atmospheric circulation system, including interactions across multiple ocean basins, is an important step towards accurate forecasts of vegetation activity.…”
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