Climate Change

Cold-adapted Species May Be Winners Under Climate Change

As the climate warms, all species will either need to find new habitats with similar temperatures to those they currently occupy or evolve new thermal tolerances. Recent research by Araujo and colleagues suggests that some species may be able to adapt to new, higher temperatures better than others. Specifically, the authors analyzed the heat and cold tolerance capabilities of 2740 terrestrial

Dendrochronology's "Divergence Problem" Explained?

A new study by Alexander Stine and Peter Huybers offers strong evidence that reduced light availability (“global dimming”) explains the apparent lack of tree-ring evidence in many Arctic regions for the recent warming observed in instrumental records there. Dendroclimatology uses measurements of the yearly growth width and density of tree rings to reconstruct changes in past climate. The …

Studying the ecological roles of top predators and the impacts of climate change on predator-prey interactions and ecosystem dynamics

I study the effects of climate change on animals, the interactions they have with each other and plants, and the cascading impacts of climate change on humans and how we live. This research is important because the climate is changing rapidly and we need to understand how ecosystems will respond so that we can adapt to the new realities of a warming world.

Wind and Topographic Irregularities Influence Antarctic Melting

Loss of mass from ice sheets contributes to rising sea level. To understand the contributions of ice-sheets to sea level rise we must understand the spatial and temporal variability of ocean-driven melting, which has accelerated over recent decades.  Dutrieux and colleagues used observations and results from numerical modeling to show the case of Pine Island Glacier in the Amundsen Sea in west…

Intergenerational Differences in Carbon Emissions

Changing people’s carbon emission patterns requires first understanding the differences in behaviors and corresponding emissions levels between different groups of people. A recent paper by Chancel in the journal Ecological Economics investigated the differences in carbon emissions between different generations in the U.S. and France. The author examined carbon emissions by American and French

Climate Change Impacts Antarctica's Ross Sea

The Ross Sea, Antarctica’s most pristine region, is experiencing anomalously marked increase in sea ice concentration. Future changes in atmospheric temperatures and wind speeds, however, will likely produce a noticeably different environment. Smith et al. examines the effect of projected changes in atmospheric temperatures and winds on aspects of ocean circulation and its implications for primary…

Early Hominin Environments in the Turkana Basin, Kenya.

Thure Cerling is a pioneer in the use of stable isotopes of Carbon, Nitrogen and Oxygen to study historic changes in CO2 levels in the Earth’s atmosphere. He was elected to the National Academy of Sciences in 2001.  In recent years he’s used stable isotopes to analyze hair, teeth and bone to better understand the impacts of changing CO2 levels on habitat, animals and man.

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