. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Figure 13. Wetland patch size vs species richness (SR) and habitat dependant(HD) bird species. Wetland bird species have not been shown to exhibit area dependency. What may be more important to these spe- cies is habitat quality relative to wetland vegetation and water level throughout the breeding season. How- ever, with increasing patch size, the number of overall wetland species, and both the SR and the numbers of HD species increases. This may be due to large
. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Figure 13. Wetland patch size vs species richness (SR) and habitat dependant(HD) bird species. Wetland bird species have not been shown to exhibit area dependency. What may be more important to these spe- cies is habitat quality relative to wetland vegetation and water level throughout the breeding season. How- ever, with increasing patch size, the number of overall wetland species, and both the SR and the numbers of HD species increases. This may be due to larger wetlands in Illinois being ol higher quality, more species may be able to utilize them, or larger sites may just be more attractive to many species. Wetland Patch Size vs SR and HD. â Linear (SR) â Linear (HD) 100 Patch Size (hectares). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division; Illinois. Dept. of Natural Resources. Champaign, Ill. : Illinois Natural History Survey
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