Strontium Isotopes Support Small Home Ranges for Extinct Lemurs

The Extinct Sloth Lemurs of Madagascar

The sloth lemurs, or Palaeopropithecidae, comprise four of the eight recognized genera of extinct lemurs and more than a third of the extinct species (Table 1; Figs. 1 and 2). Four genera are currently recognized as belonging in this family: Palaeopropithecus (the type genus), the truly gigantic Archaeoindris, the much smaller-bodied Mesopropithecus, and the midsized, recently discovered Babako...

Foraging optimally for home ranges

Economic models predict behavior of animals based on the presumption that natural selection has shaped behaviors important to an animal’s fitness to maximize benefits over costs. Economic analyses have shown that territories of animals are structured by trade-offs between benefits gained from resources and costs of defending them. Intuitively, home ranges should be similarly structured, but tra...

Strontium isotopes in mid-cretaceous seawater.

Detecting infiltration and impacts of introduced water using strontium isotopes.

Water introduced to surface drainages, such as agricultural and roadway runoff, mine drainage, or coalbed natural gas (CBNG)-produced water, potentially can be of environmental concern. In order to mitigate potential environmental effects, it may be important to be able to trace water discharged to the surface as it infiltrates and interacts with near-surface aquifers. We have chosen to study w...

Source of Lake Vostok Cations Constrained with Strontium Isotopes

Lake Vostok is the largest sub-glacial lake in Antarctica. The primary source of our current knowledge regarding the geochemistry and biology of the lake comes from the analysis of refrozen lake water associated with ice core drilling. Several sources of dissolved ions and particulate matter to the lake have been proposed, including materials from the melted glacier ice, the weathering of under...