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NatureServe is a non-profit organization dedicated to providing the scientific knowledge that forms the basis for effective conservation action. Acknowledgements We wish to acknowledge the generous support provided by The Nature Conservancy for this effort to classify and characterize the ecological systems of the United States. We are particularly grateful… (More)
NatureServe is a non-profit organization dedicated to providing the scientific basis for effective conservation.
NatureServe is a 501(c)3 nonprofit organization dedicated to providing the scientific basis for effective conservation action. NatureServe and its hemisphere-wide network of natural heritage programs are the leading source for information about rare and endangered species and threatened ecosystems. ii NatureServe T his document provides comprehensive… (More)
BACKGROUND Insulin-like growth factor binding protein-2 (IGFBP-2) is significantly increased in the serum of patients with malignant gliomas. High plasma IGFBP-2 levels are correlated with poor prognosis in glioma patients. However, the exact role of exogenous IGFBP-2 in gliomas is unclear. METHODS AND RESULTS Using the MTT cell viability assay, cell… (More)
Models of population dynamics are commonly used to predict risks in ecology, particularly risks of population decline. There is often considerable uncertainty associated with these predictions. However, alternatives to predictions based on population models have not been assessed. We used simulation models of hypothetical species to generate the kinds of… (More)
Front cover: Waterfowl over a re-flooded crop field enhancement practice in Scott County, Missouri. NatureServe is a non-profit organization dedicated to providing the scientific knowledge that forms the basis for effective conservation action. We would like to acknowledge the following individuals whose contributions were essential to the success of this… (More)