Filters: Tags: control (X)79 results (129ms)
Our demands on natural systems outweigh the capacity of those systems to support us. This paper calls for an approach to development that consistently delivers ‘net benefit’ for biodiversity or ‘ecological enhancement’. Examples of enhancement are presented through four case studies in India undertaken between 2005 and 2010. Actions focus on improving the overall ecological structure, composition and functions of sites; strengthening ecological networks by creating new habitats and buffer areas; and improving the services provided by the ecosystems, without jeopardizing biodiversity. While recognizing the importance of quantitative metrics of impacts and mitigation measures to determine outcomes, such measures were...
Control of Tamarix in the Western United States: implications for water salvage, wildlife use, and riparian restoration
Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in western North America. Many resource managers seek to reduce saltcedar abundance and control its spread to increase the flow of water in streams that might otherwise be lost to evapotranspiration, to restore native riparian (streamside) vegetation, and to improve wildlife habitat. However, increased water yield might not always occur and has been substantially lower than expected in water salvage experiments, the potential for successful revegetation is variable, and not all wildlife taxa clearly prefer native plant habitats over saltcedar....
ADMMR map collection: Control Mines, Daily-Geesman Area Geologic Cross Section Along Line GH; 1 in. to 50 feet; 35 x 22 in.
ADMMR map collection: Control Mines Location Map; 1 in. to 1500 feet; 11 x 9 in.
ADMMR map collection: Control Mines, Daily-Geesman Area Geologic Cross Section Along Line UV; 1 in. to 50 feet; 34 x 22 in.
ADMMR map collection: Control Mine Map Level 4; 1 in. to 50 feet; 41 x 33 in.
Restriction Endonuclease Analysis of Mitochondrial DNA From Virus-Transformed, Tumor and Control Cells of Human, Hamster and Avian Origin. Sequence Conservation and Intraspecific Variation.
Antarctic Bottom Water Current through the Romanche and Chain Fracture Zones of the Equatorial Atlantic.
ADMMR map collection: Magnetometer Survey (Vertical Magnetic Intensity) for Control Mines, Old Hat Mining District; 1 in. to 100 feet; 33 x 28 in.
ADMMR map collection: Control Mines Geology Section; 1 in. to 300 feet; 34 x 26 in.
ADMMR map collection: Control Mines, Daily-Geesman Area Geologic Cross Section Along Line MN; 1 in. to 50 feet; 34 x 22 in.
In 2007, a phase shift from corals to corallimorpharians (CM) was documented at Palmyra Atoll, Line Islands, centered around a shipwreck. Subsequent surveys revealed CM to be overgrowing the reef benthos, including corals and coralline algae, potentially placing coral ecosystems in the atoll at risk. This prompted the U.S. Fish and Wildlife Service, the lead management agency of the atoll, to remove the shipwreck. Subsequent surveys showed reversal of spread of CM around the ship impact site. We explain patterns of spread of the CM in terms of life history and local currents and show with a pilot study that pulverized bleach may be an effective tool to eradicate CM on a local scale. If applied strategically, particularly...