The State of the Nation's Ecosystems: Measuring the Lands, Waters, and Living Resources of the United StatesH. John Heinz III Center for Science, Economics, and the Environment Cambridge University Press, 9 sept 2002 - 270 páginas We all rely on a familiar set of indicators - interest rates, unemployment, inflation, the Dow Jones index, and GDP, for example - to gauge the performance of national economies. No such measures are currently available to describe the environment. This book lays out a blueprint for periodic reporting on the condition and use of ecosystems in the United States. Developed by experts from businesses, environmental organizations, universities, and federal, state, and local government agencies, it is designed to provide policymakers and the general public with a succinct and comprehensive - yet scientifically sound and non-partisan - view of 'how we are doing'. This book should prove invaluable for decision makers in natural resource management and environmental policy in government and environmental organizations, businesses, and trade associations; academics with a research or teaching interest in environmental issues; and the general public interested in the continued well-being of American ecosystems. |
Índice
The Reporting Framework | 7 |
The State of the Nations Ecosystems | 17 |
The Indicators | 31 |
Coastal Living Habitats | 69 |
AtRisk Native Marine Species | 75 |
Farmlands | 91 |
Forests | 117 |
Fresh Waters | 139 |
Grasslands and Shrublands | 161 |
Urban and Suburban Lands | 176 |
Appendix and Technical Notes | 197 |
111 | 267 |
Términos y frases comunes
acreage Adequate for National agricultural algal blooms Animals Communities Ecological aquatic aquifers Assessment benthic BIOLOGICAL COMPONENTS Plants changes CHEMICAL AND PHYSICAL Communities Ecological Productivity concentrations condition Contaminants Physical BIOLOGICAL Coverage cropland data are available Data Gap Data Not Adequate Dataset DIMENSIONS Extent Pattern Ecological Productivity HUMAN ecoregions ecosystem services estuaries Extent Pattern CHEMICAL farmland landscape Fiber fish freshwater grasslands and shrublands groundwater guidelines habitat HUMAN USES Food Indicator Be Reported indicator reports invasive species lakes land cover lower 48 measure million acres monitoring National Reporting natural nitrate nitrogen NLCD non-native species Oxygen Contaminants Physical patches percentage pesticides phosphorus Physical BIOLOGICAL COMPONENTS PHYSICAL Nutrients pixels Plants and Animals region riparian sampling sediments shoreline soil soil organic matter Soil Salinity suburban areas SYSTEM DIMENSIONS Extent technical note trends types U.S. Geological Survey urban and suburban USDA Forest Service USGS vegetation Water Quality Water Recreation wetlands wildlife