National Park Service plant ecologist Carl Roland lives in Alaska, where climate change is palpably present. Ecologists have predicted major landscape-scale changes in the future of the Alaskan interior, with a potential shift from the iconic black and white spruce boreal forest, to broadleaf trees, or even grasslands, through a combination of heat, drought, [...]

Changing climate, changing landscape: monitoring the vast wilderness of interior Alaska [ 32:40 ] Play Now | Play in Popup | Download

The success of an animal or plant is determined by how many offspring it produces. But in some cases, not all offspring are created equal. In the February edition of Field Talk, Jaboury Ghazoul of the Swiss Federal Institute of Technology in Zurich, Switzerland, describes how some species of trees invest resources in seeds that [...]

The Sacrificial Sibling Hypothesis [ 10:45 ] Play Now | Play in Popup | Download