نتایج جستجو برای: riparian area

تعداد نتایج: 588010  

2009
Yongping Yuan Ronald L. Bingner Martin A. Locke

In recent years, there has been growing recognition of the importance of riparian buffers between agricultural fields and waterbodies. Riparian buffers play an important role in mitigating the impacts of land use activities on water quality and aquatic ecosystems. However, evaluating the effectiveness of riparian buffer systems on a watershed scale is complex, and watershed models have limited ...

2007
Sherman Swanson

2 Extension Range Specialist and Research Scientist, University of Nevada, Department of Range Wildlife and Forestry, Reno, Nevada. Abstract: Historic use of many stream riparian areas and associated watersheds has impaired the capacity of riparian vegetation and floodplains to reduce stream energy and trap sediments. As low-gradient streams with erodible banks increase in width and change thei...

Journal: :Journal of Insect Science 2005
K.A. Subramanian K.G. Sivaramakrishnan Madhav Gadgil

The impact of riparian land use on the stream insect communities was studied at Kudremukh National Park located within Western Ghats, a tropical biodiversity hotspot in India. The diversity and community composition of stream insects varied across streams with different riparian land use types. The rarefied family and generic richness was highest in streams with natural semi evergreen forests a...

2012
SANDRA RYAN KATHLEEN DWIRE

In this study of a burned watershed in northwestern Wyoming, USA, sedimentation impacts following a moderately-sized fire (Boulder Creek burn, 2000) were evaluated against sediment loads estimated for the period prior to burning. Early observations of suspended sediment yield showed substantially elevated loads (5×) the first year post-fire (2001), followed by less elevated loads in 2002 and 20...

2000
Sherri L. Johnson Frederick J. Swanson Gordon E. Grant Steven M. Wondzell

Large ̄oods can have major impacts on riparian forests. Here we examine the variability and spatial distribution of riparian forest responses along eight thirdto ®fth-order streams following a large ̄ood ( 100 year recurrence interval) in the Cascade Mountain Range of Oregon. We categorized disturbance intensity (physical force) exerted on riparian trees during ̄oods into three classes: (i) pur...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2006
Gordon H Reeves Peter A Bisson Bruce E Rieman Lee E Benda

We reviewed the behavior of wildfire in riparian zones, primarily in the western United States, and the potential ecological consequences of postfire logging. Fire behavior in riparian zones is complex, but many aquatic and riparian organisms exhibit a suite of adaptations that allow relatively rapid recovery after fire. Unless constrained by other factors, fish tend to rebound relatively quick...

Journal: :Biomedical and environmental sciences : BES 2013
Duo Quan Wang Lin Hua Tang Zhen Cheng Gu Xiang Zheng Wei Kang Jiang

OBJECTIVE To define and evaluate the malaria transmission potential in the Yangtze River, following construction of the Three Gorges Reservoir. METHODS Six villages, namely, Kaixian, Fengjie, Wanzhou, Fuling, Yubei, and Zigui were selected for investigating the malaria transmission potential in the reservoir. Transmission potential was estimated by mathematical modeling and evaluation of the ...

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