The range of the greater sage-grouse has likely changed due to several factors, primarily related to habitat loss and degradation. Here are some potential reasons for the changes in its geographic range:
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Habitat Loss: Urban development, agriculture, and industrial activities can lead to the destruction of sagebrush habitats, which are crucial for the greater sage-grouse's survival.
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Climate Change: Changes in climate can alter the vegetation composition and availability of suitable habitats for the sage-grouse, potentially forcing them to migrate to new areas where conditions are more favorable.
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Wildfire: Increasing frequency and intensity of wildfires can lead to destruction of sagebrush habitats, impacting the nesting and foraging areas required by sage-grouse.
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Invasive Species: The introduction of non-native plant species can alter the ecosystem, making it less favorable for sagebrush-dwelling species like the greater sage-grouse.
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Fragmentation: Land-use changes can create isolated patches of habitat, making it difficult for sage-grouse to find suitable mates and effectively use their habitat.
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Human Activities: Increased human activities, including energy development (like oil and gas extraction), can disrupt their habitats and diminish their populations.
The combination of these factors has contributed to the decline and retraction of the sage-grouse’s geographic range over time, emphasizing the need for conservation efforts to protect their habitats.
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