It is generally the case that a significant degree of uncertainty exists concerning the behavior of ecological systems. Adaptive management has been developed to address such structural uncertainty, while recognizing that decisions must be made without full knowledge of how a system behaves. This paradigm attempts to use new information that develops during the course of management to learn how...

Estimating species density and abundance is challenging but important for establishing conservation management strategies. Significant progress has been made toward estimating Golden Eagle (Aquila chrysaetos) in the conterminous United States of America (USA) much less known about eagle Alaska. Here, we paired migration count GPS-tracking data collected near Gunsight Mountain, Alaska, a Bayesia...

Leks often attract predators as well as mates, yet most evolutionary models have assumed that sexual selection, not predation, drives lekking behavior. We explored the influence of predation on lek dynamics using a stochastic dynamic game model based on the lek-breeding greater sage grouse (Centrocercus urophasianus) and its principal avian predator, the golden eagle (Aquila chrysaetos). The mo...

The late Pleistocene extinction decimated terrestrial megafaunal communities in North America, but did not affect marine mammal populations. In coastal regions, marine megafauna may have provided a buffer that allowed some large predators or scavengers, such as California condors (Gymnogyps californianus), to survive into the Holocene. To track the influence of marine resources on avifaunas we ...

The year is 1967. The cars are monstrously powerful, extremely light, and the tires are so hard that a single set will often last three race weekends! Brakes are terrible. Forty gallons of volatile gasoline surround the driver— contained by nothing more than a thin skin of fragile aluminium—and there are no seatbelts. The circuits are breathtakingly beautiful, supremely challenging, and brutall...

a) Audubon Watchlist: Red or Yellow List rankings b) Partners in Flight North American Landbird Conservation Plan (Rich et al. 2004): Watch List ranking c) Intermountain West Waterbird Conservation Plan (Ivey and Herziger 2006): High or Moderate Concern rankings d) Intermountain West Regional Shorebird Plan (Oring et al. 2000): Critically Important or Very Important rankings e) Pacific Flyway p...

Antioxidants provide protection against free radicals formed as a result of increased metabolism in living organisms and the damage these cause to cell. For this reason, determining antioxidant levels can help eco-physiologists field understanding physiological state animal at that moment conservation biology. In study, TAC, TOC OSI values 12 Long-legged Buzzards (Buteo rufinus), 7 Common buteo...

Abstract Health assessment of individuals is an important aspect monitoring endangered wildlife populations. Haematological and biochemical values are a common health tool, whilst reference well established for domestic species, they often not available wild animal species. This study 31 haematological intervals golden eagle ( Aquila chrysaetos ) nestlings in Scotland, order to improve the unde...