نتایج جستجو برای: riparian area

تعداد نتایج: 588010  

2011
James P. Hakala

In 1993 trees and shrubs were planted along a study area of Leatherstocking Creek (otsego C01mty, N. Y.) previously devoid of riparian vegetation. A baseline study was initiated to deteo~ne the effects of il~roved riparian vegetation ou waler quality, invertebrate and fish composition and biomass. INTRODUCTION Significant mortality of brook trout occurred in the upper reaches of Leather-stockin...

2013
Cathal Buckley Stephen Hynes Sarah Mechan

In the European Union, mitigation measures to abate diffuse pollution from agricultural land are implemented under the direction of the EU Nitrates and Water Framework Directives. As these measures are implemented in national policies, a review process will look at the efficacy of the measures with a view to recommending further measures as necessary and following scientific and stakeholder con...

1989
BOONE KAUFFMAN

-Riparian ecosystems are sites of important biogeochemical processes that affect the composition and structure of the streamside biota as well as aquatic systems. Microbial activity, coupled with the slow diffusion of oxygen in waterlogged riparian soils, causes anaerobic conditions and reduction in reduction­ oxidation (redox) potential. Redox potentials provide a useful measurement as to the ...

Journal: :Journal of environmental management 2003
Pamela J Jakes Ciara Schlichting Dorothy H Anderson

Some of the greatest challenges for managing residential development occur at the interface between the terrestrial and aquatic ecosystems--in a lake's riparian area. Land use planners need a framework they can use to identify development hotspots, areas were the next push for development will most likely occur. Lake riparian development profiles provide a framework for linking ecological and s...

Journal: :Remote Sensing 2013
Pamela L. Nagler Edward P. Glenn Uyen Nguyen Russell L. Scott Tanya Doody

Dryland river basins frequently support both irrigated agriculture and riparian vegetation and remote sensing methods are needed to monitor water use by both crops and natural vegetation in irrigation districts. We developed an algorithm for estimating actual evapotranspiration (ETa) based on the Enhanced Vegetation Index (EVI) from the Moderate Resolution Imaging Spectrometer (MODIS) sensor on...

2005
I. F. Creed R. L. Rothwell

Organic matter. Coarse woody debris (CWD) is thought to be important as cover for fish in the littoral zone of lakes. Development along the shoreline of lakes was negatively correlated with the density of CWD in lakes (Christensen et al. 1996). France et al. (1996) found that losses of leaf litter due to riparian clear cutting along lakes could result in substantial losses of dissolved organic ...

2006
DOUGLAS M. GREEN BOONE KAUFFMAN

Comparisons of vegetation dynamics of riparian plant communities under livestock use and esclusions over a 10 year period were quantified in a Northeastern Oregon riparian zone. We measured species frequency, richness, diversity, evenness, and livestock utilization in 8 plant communities. Livestock grazed the study area from late August until mid September at a rate of 1.3 to 1.8 ha/AUM. Utiliz...

2000
M. JACOBA SALINAS GABRIEL BLANCA ANA T. ROMERO

Riparian vegetation is vulnerable to human impact worldwide, and this is especially so in arid areas, yet there have been few quantitative studies and this is especially so in Spain. The state of the riparian vegetation along three major rivers and seasonal watercourses of southeastern Spain was evaluated during 1992–93, using the species composition and community structure in watercourses of d...

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