Boreal birds of North America : a hemispheric view of their by Jeffrey V. Wells

By Jeffrey V. Wells

Reaching from inside Alaska throughout Canada to Labrador and Newfoundland, North America’s boreal wooded area is the biggest wasteland region left on the earth. it's serious habitat for billions of birds; greater than three hundred species frequently breed there. After the breeding season, many boreal birds migrate to seasonal habitats around the usa, Mexico, the Caribbean, and vital and South the USA. This quantity brings jointly new study on boreal chicken biology and conservation. It highlights the significance of the quarter to the worldwide avifauna and to the connectivity among the boreal wooded area and ecoregions during the Americas. The contributions exhibit a special set of views at the migration, wintering ecology, and conservation of chicken groups which are tied to the boreal woodland in ways in which would possibly not were formerly considered.

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Those uncertainties generally are captured by four key questions: 1. Where are the birds? 2. Why are they there? 3. How might waterfowl populations change in response to anthropogenic activity? 4. What can be done to minimize that change? STUDIES IN AVIAN BIOLOGY NO. 4. Breeding season duck population trends for three biomes in North America. The Boreal biome (dashed line) includes the Alaska boreal region, Boreal Plains, Taiga Plains, Boreal Shield, Taiga Shield, Taiga Cordillera, and the Boreal Transition ecozones.

However, ecological conditions at northern latitudes are likely different from those in southern regions and species may use different life history strategies to cope with shorter breeding seasons and different food sources when breeding in the north (Paszkowski and Tonn 2000, Lake et al. 2006, Schmidt et al. 2006). ” can also lead to a better understanding of factors influencing wetland productivity, allowing us to STUDIES IN AVIAN BIOLOGY NO. 41 Wells 8/24/11 11:07:45 AM establish estimates for the natural range of variation in productivity against which to judge effects of anthropogenic landscape changes important to ducks and refine working hypotheses about how those changes might limit waterfowl populations.

Krapu et al. 1983, Anderson and Titman 1992, Greenwood et al. 1995, Guyn and Clark 2000, Devries et al. 2004). However, ecological conditions at northern latitudes are likely different from those in southern regions and species may use different life history strategies to cope with shorter breeding seasons and different food sources when breeding in the north (Paszkowski and Tonn 2000, Lake et al. 2006, Schmidt et al. 2006). ” can also lead to a better understanding of factors influencing wetland productivity, allowing us to STUDIES IN AVIAN BIOLOGY NO.

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