bioavailability
发表于 2025-3-28 17:03:47
Savanna and Open-Woodland Communities970, Iverson et al. 1991). The sharp dividing boundaries implied are more a matter of convenience of scale and difficulties in mapping variable boundaries than a reflection of reality. Of course, the fires that contributed largely to the maintenance of the tallgrass prairies of this region (Risser e
评论性
发表于 2025-3-28 19:41:42
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ORE
发表于 2025-3-28 23:01:20
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使绝缘
发表于 2025-3-29 06:49:46
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Colonnade
发表于 2025-3-29 09:08:52
Native Pests: The Impact of Deer in Highly Fragmented Habitatsaffected many species negatively (Guttenspergen 1983). Affected organisms include those dependent upon large blocks of habitat such as forest interior birds (Robbins 1980, Robbins et al. 1989), and large predators including the gray wolf (Fritts and Carbyn 1995) and grizzly bear. Other species like
adulterant
发表于 2025-3-29 14:42:58
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Enthralling
发表于 2025-3-29 16:15:49
Effectiveness of Small Nature Preserves for Breeding Birdshave been well documented in breeding birds of midwestern forests and grasslands (Robinson 1988, Robinson and Wilcove 1994, Herkert 1994, Robinson et al. 1995). Area sensitivity, the absence of birds from small tracts even when suitable habitat is present, is pronounced in midwestern grasslands (Her
enfeeble
发表于 2025-3-29 23:08:41
Impacts of Fragmentation on Midwestern Aquatic Organismsless empirical information is available on the effects of fragmentation on freshwater species and communities (Bradford et al. 1993, Townsend and Crowl 1991). Fragmentation in streams (i.e., a lack of connectivity between upstream and downstream populations) can be caused by many anthropogenic influ
anthesis
发表于 2025-3-30 02:21:35
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是限制
发表于 2025-3-30 07:46:01
Community Succession, Diversity, and Disturbance in the Central Hardwood Forestnot only locally and regionally but also nationally. This concern has grown concurrent with the hard database that has provided new information on succession, stability, and biodiversity. In the central hardwood region, the process of forest succession is characterized by . of the oak-hickory forest