Filters: Tags: monitoring 1-Changes in Plant and Animal Distribution: Fauna (X) > partyWithName: Boonstra, Rudy (X) > partyWithName: Krebs, Charles J. (X) > Types: OGC WMS Layer (X) > Extensions: Citation (X)
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Chapter 11
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Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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MammalsWhite River,
Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna,
P2-Changes in Plant and Animal Species Due to Climate Change
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Small mammals in boreal forest ecosystems fluctuate dramatically in abundance and 1 possible mechanism to explain these changes is the bottom-up hypothesis of variation in food supplies. Here we ask if variation in berry crops produced by 6 major species of dwarf shrubs and herbs, epigeous mushroom crops, and white spruce seeds allow us to predict changes in the abundance of the red-backed vole (Myodes [= Clethrionomys] rutilus), the deer mouse (Peromyscus maniculatus), and field voles (Microtus oeconomus and M. pennsylvanicus combined) over 13 years (1997-2009) in the Kluane Lake region of the southwestern Yukon, Canada. M. rutilus is the dominant rodent in these forests, comprising 64% of the catch. Overwinter...
We review the population dynamics of red-backed voles (Myodes species) in North America, the main deciduous and coniferous forest-dwelling microtines on this continent, and compare and contrast their pattern with that of the same or similar species in Eurasia. We identify 7 long-term studies of population changes in Myodes in North America. Using autoregressive and spectral analysis, we found that only 2 of the 7 show 3- to 5-year cycles like those found in some Eurasian populations. There was no relationship between latitude and cycling. The general lack of cyclicity is associated with two key aspects of their demography that act in tandem: first, poor overwinter survival in most years; second, chronically low...
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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Tags: Birds,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Chapter 12
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Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Predation is a central organizing process affecting populations and communities. Traditionally, ecologists have focused on the direct effects of predation--the killing of prey. However, predators also have significant sublethal effects on prey populations. We investigated how fluctuating predation risk affected the stress physiology of a cyclic population of snowshoe hares (Lepus americanus) in the Yukon, finding that they are extremely sensitive to the fluctuating risk of predation. In years of high predator numbers, hares had greater plasma cortisol levels at capture, greater fecal cortisol metabolite levels, a greater plasma cortisol response to a hormone challenge, a greater ability to mobilize energy and poorer...
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Categories: Data,
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Types: Citation,
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Tags: Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna,
Monitoring 1-Changes in Plant and Animal Distribution: Flora
Categories: Data,
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Categories: Data,
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Tags: Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna,
Monitoring 1-Changes in Plant and Animal Distribution: Flora
Categories: Data,
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Tags: Monitoring 1-Changes in Plant and Animal Distribution: Fauna
Categories: Data,
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Types: Citation,
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Tags: Mammals,
Monitoring 1-Changes in Plant and Animal Distribution: Fauna
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