Beaver have expanded in their native habitats throughout the northern hemisphere in recent decades following reductions in trapping and reintroduction efforts. Beaver have the potential to strongly influence salmon populations in the side channels of large alluvial rivers by building dams that create pond complexes. Pond habitat may improve salmon productivity or the presence of dams may reduce...

The objective of this paper is to study the turbidity behavior in an Amazon Floodplain Lake. Observations of turbidity provide quantitative information about water quality conditions. However, the number of available in situ measurements of water quality characteristics is usually limited, especially temporal series variables and synoptic coverage of extensive water body. In order to contribute...

Subarctic Siberian freshwater ecosystems are unique due to severe climatic conditions and strong seasonal changes of water supply, temperature and nutrient availability. In this work we evaluated the relative influence of the illumination level linked with the diurnal cycle, local environmental heterogeneity and water level changes during the receding flood on the distribution and migrations of...

Economical integration of permanent and emergency flood control options is a long-standing problem in water resources planning and management. A two-stage linear programming formulation of this problem is proposed and demonstrated which provides an explicit economic basis for developing integrated floodplain management plans. The approach minimizes the expected value of flood damages and costs,...

presenting additional information, views, and analyses that may help to refine the HHRA to be more reflective of the potential for exposures and risks due to polychlorinated biphenyls (PCBs) in the Rest of River portion of the Housatonic River and its floodplain. These comments generally follow the structure of the Peer Review Charge developed by EPA. As such, they first discuss each of the thr...

Flood-control levees are generally thought to increase flood height and velocity for a given discharge. While extensive areas of floodplain in the United States are leveed, the ecological impacts of levees have largely been ignored relative to other anthropogenic impacts to large river floodplains. We examined a century of flood control along the Wisconsin River by comparing simulated flood reg...

Table 1. Buffer distances and maximum elevation thresholds to define floodplain spatial extent..... 23 Table 2. Estimated total sockeye salmon run size (in thousands) for the Nushagak river watershed. Figure 2. Broad scale landscape processes and patterns such as climate and topography influence conditions at reach and microhabitat scales important for freshwater life stages of Pacific salmon, ...

Although wetlands in Tanzania and Kenya have great potentials for agricultural production and a multitude of uses, many of them are not even documented on official maps. Lack of official recognition has done little in preventing there over utilization. As the wetlands continue to play remarkable roles in the movement of people and terrestrial species in the region, it is important that they are...

Engineering Risk Analysis and Multi-Objective Decision-Making Under Risk are considered as a general framework for floodplain management and protection from extreme floods. Distinction is made between (a) the catchment or large scale planning and (b) the local or small scale design of protective measures. After defining the risk of flooding at different scales and multiple criteria for selectin...

pattern of feeding and reproduction of amblypharyngodon mola (hamilton, 1822) was studied in two floodplain lakes of north 24 parganas districts of west bengal in india during 2011.  results indicated that the fish exhibited a predominantly herbivorous diet with algae as the main content of gut. a long, thin walled, coiled gut and closely packed filamentous gill racker suited this feeding habit...