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Records 1 to 25 of 142 records about 'Ecosystems and Ecoregions'

Ecoregions of New England
(EXTRAMURAL DOCUMENT) [Published : Dec 01, 2009]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. Ecoreg...
WHAT CAN BIOLOGICAL MONITORING TELL US ABOUT THE ENVIRONMENTAL HEALTH OF AQUATIC ECOSYSTEMS
[Published : Sep 30, 1989]
Biological monitoring offers a proven, cost-effective way to evaluate the health of aquatic ecosystems. or the sake of brevity, this paper focuses on examples using fish assemblages and the IBI, but fish and macroinvertebrate assemblages provide complementary information and it i...
ECOREGION DELINEATION IN TEXAS
[Published : Dec 31, 2003]
Level III ecoregions are being refined and subdivided into level IV for the state of Texas. This work is consistent with ecoregion revision and subdivision that has been completed or is on-going in 37 of the conterminous United States. The two-year project is collaborative, inv...
ECOREGIONS OF TEXAS
(DATA/SOFTWARE) [Published : Dec 01, 2004]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. Ecore...
Effects of Nitrogen Deposition and Empirical Nitrogen Critical Loads for Ecoregions of the United States
(JOURNAL) [Published : Dec 01, 2011]
Human activity in the last century has led to a significant increase in nitrogen (N) emissions and atmospheric deposition. This N deposition has reached a level that has caused or is likely to cause alterations to the structure and function of many ecosystems across the United St...
LEVEL I, II, AND III ECOREGIONS OF NORTH AMERICA
[Published : Nov 01, 2005]
Many of the environmental issues which we face today are ecosystem in scope and do not correspond to jurisdictional or administrative boundaries. Adopting an ecosystem approach to environmental resource management and risk assessment requires an understanding of the spatial natu...
LEVEL III AND IV ECOREGIONS OF ARKANSAS
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF EPA REGION 7
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem compon...
LEVEL III AND IV ECOREGIONS OF FLORIDA
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem compon...
LEVEL III AND IV ECOREGIONS OF KANSAS
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By re...
LEVEL III AND IV ECOREGIONS OF KANSAS AND NEBRASKA
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By re...
LEVEL III AND IV ECOREGIONS OF KENTUCKY
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By re...
LEVEL III AND IV ECOREGIONS OF LOUISIANA
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF MASSACHUSETTS, CONNECTICUT, NAD RHODE ISLAND
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem compo...
LEVEL III AND IV ECOREGIONS OF MISSISSIPPI
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF MONTANA
[Published : Nov 22, 2005]
The second edition of "Ecoregions of Montana" (2002) revises many ecoregion polygon assignments that appeared in the first edition (Woods and others, 1999). These changes were made after research in Idaho (McGrath and others, 2002) recognized the Idaho Batholith as a se...
LEVEL III AND IV ECOREGIONS OF NEBRASKA
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By re...
LEVEL III AND IV ECOREGIONS OF OKLAHOMA
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF OREGON
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF THE CONTINENTAL UNITED STATES
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF THE MISSISSIPPI ALLUVIAL PLAIN
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL III AND IV ECOREGIONS OF WISCONSIN
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem compon...
LEVEL III AND IV ECOREGIONS OF WYOMING
[Published : Nov 22, 2005]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By rec...
LEVEL IV ECOREGION DELINEATION FOR THE STATE OF WYOMING
[Published : Dec 31, 2003]
Level III ecoregions were refined and subdivided into level IV for the state of Wyoming in a manner consistent with ecoregion revision and subdivision that has been completed or is on-going in 37 of the conterminous United States. The project was collaborative, involving the scie...
MAP OF ECOREGIONS OF MISSISSIPPI
(DATA/SOFTWARE) [Published : Jan 01, 2004]
Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. Ecore...