A herd of alpine ibex (Capra ibex) struggles through deep snow. A recent study examined 45 years of census data for a population of alpine ibex in Gran Paradiso National Park in northwestern Italy....
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A male Klug’s clearwing butterfly (Dircenna klugii klugii) foraging on a coffee flower (Coffea arabica) in the Soconusco region of Chiapas, Mexico. Shade-grown coffee certification programs...
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Different land uses have created a varied landscape in the Willamette Basin of Oregon that supports a rich array of species as well as an array of economic activities. Researchers have recently...
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Aerial view of the upper Willamette River, Oregon. Although some off-channel features and riparian forest remain, particularly in upper reaches as illustrated here, overall the Willamette River has...
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African elephants (Loxodonta Africana) have an important impact on that ecosystem type, influencing its structure, function, and composition. In Kruger National Park, South Africa, park scientists,...
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To investigate how species, communities, and habitats change over the rural-urban (or pristine to human-dominated) gradient students conduct a series of biological inventories, field measurements,...
This Figure Set explores the complexity of forest ecosystems with particular emphasis on the effects of expanding white-tailed deer (Odocoileus virginianus) populations on trees, birds, and people....
ISSUES: DATA SET Exploring the population dynamics of wintering bald eagles through long-term data
THE ECOLOGICAL QUESTION:
How does a bald eagle population change over time at a winter...
The floodplain lacks young willows (Salix spp.) and is dominated largely by upland grasses and herbaceous dicots. Bank and channel erosion are prominent. Willows decreased in stature and abundance...
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