Approaching a state shift in Earth’s biosphere
Evidence that the global ecosystem as a whole is approaching a planetary-scale critical transition as a result of human influence is reviewed, highlighting the need to improve biological forecasting by detecting early warning signs of critical transitions.
Serial SimCoal: A population genetics model for data from multiple populations and points in time
Serial SimCoal, a program that models population genetic data from multiple time points, as with ancient DNA data, is presented, an extension of SIMCOAL, which allows simultaneous modeling of complex demographic histories, and migration between multiple populations.
Forest bolsters bird abundance, pest control and coffee yield.
The value native predators provide to farmers by consuming coffee's most damaging insect pest, the coffee berry borer beetle, is quantified to demonstrate a win-win for biodiversity and coffee farmers.
Climatic change and wetland desiccation cause amphibian decline in Yellowstone National Park
- S. McMenamin, E. Hadly, C. Wright
- Environmental ScienceProceedings of the National Academy of Sciences
- 4 November 2008
Climate monitoring over 6 decades, remote sensing, and repeated surveys of 49 ponds indicate that decreasing annual precipitation and increasing temperatures during the warmest months of the year have significantly altered the landscape and the local biological communities.
Small mammal diversity loss in response to late-Pleistocene climatic change
It is shown that across future landscapes there will be some unanticipated effects of global change on diversity: restructuring of small mammal communities, significant loss of richness, and perhaps the rising dominance of native ‘weedy’ species.
Predicting biodiversity change and averting collapse in agricultural landscapes
This work directly test biogeographic theories for countryside and island ecosystems by comparing a Neotropical countryside ecosystem with a nearby island ecosystem, and shows that each supports similar bat biodiversity in fundamentally different ways.
Similarity of Mammalian Body Size across the Taxonomic Hierarchy and across Space and Time
It is suspected that life‐history and ecological parameters are so tightly constrained by allometry at diminutive size that animals can only adapt to novel ecological conditions by modifying body size, and body size patterns across the body size spectrum are consistent across the size spectrum.
Mammalian Response to Cenozoic Climatic Change
This work has shown that shared life history traits and evolutionary history allow us to generalize about mammalian response to climatic change above the species level, and these generalizations provide the insights into the complexity of mammalian response.
Influence of Late-Holocene Climate on Northern Rocky Mountain Mammals
- E. Hadly
- Environmental Science, GeographyQuaternary Research
- 1 November 1996
An exceptionally rich paleontological site containing thousands of mammalian fossils and well-dated with 18 radiocarbon samples provides evidence of late-Holocene ecological response to climatic…
Post-invasion demography of prehistoric humans in South America
The spatiotemporal patterns of human population growth in South America are reconstructed using a newly aggregated database of 1,147 archaeological sites and 5,464 calibrated radiocarbon dates spanning fourteen thousand to two thousand years ago to demonstrate that, rather than a steady exponential expansion, the demographic history of South Americans is characterized by two distinct phases.