Seagrasses cover about 0.1–0.2% of the global ocean, and develop highly productive ecosystems which fulfil a key role in the coastal ecosystem. Widespread seagrass loss results from direct human impacts, including mechanical damage (by dredging, fishing, and anchoring), eutrophication, aquaculture, siltation, effects of coastal constructions, and food web alterations; and indirect human impacts...

0[ Freshwater mussels "Order Unionoida# are the most imperiled faunal group in North America^ 59) of described species are considered endangered or threatened\ and 01) are presumed extinct[ Widespread habitat degradation "including pollution\ siltation\ river channelization and impoundment# has been the primary cause of extinction during this century\ but a new stress was added in the last deca...

Multiple anthropogenic stressors, including increased watershed imperviousness, destruction of the riparian vegetation, increased siltation, and changes in climate, will impact streams over the coming century. These stressors will alter water temperature, thus influencing ecological processes and stream biota. Quantitative tools are needed to predict the magnitude and direction of altered therm...

Recently, many publications have explored the utility of Geographic Information Systems (GIS) and remote-sensed imagery to approximate the regional causes of water pollution (Basnyat 1999; Basnyat 2000; Griffith 2002). In such studies, water pollution data is placed in a geographic context to see what generalizations can be made about the impact of regional land use practices on water quality. ...

Because of high numbers of animals killed on Paynes Prairie State Preserve, Alachua County, Florida, the Florida Department of Transportation constructed a barrier wall-culvert system to reduce wildlife mortality yet allow for passage of some animals across the highway. During a one year study following construction, we counted only 158 animals, excluding hylid treefrogs, killed in the same are...

Silting is the main factor limiting ability to perform tasks that small reservoirs are intended for. Therefore, change in sediment trap efficiency was studied for a shallow reservoir, Krempna, which, due high silting intensity, desilted twice (2005, 2018). Siltation measurements were performed two periods (1987–2005, 2006–2018) after reservoir desludged. It found sediments composed of fine-frac...

Hospital waste water is one of the causes environmental pollution. Where river pollution effects (Sari et al., 2020). The high content Total Suspended Solid (TSS) parameters High TSS in rivers has potential to cause siltation (Ruhmawati 2017). So that management hospital very important One economical treatment methods phytoremediation (Novita 2019). research was conducted by mixing wastewater w...

Over the past 10 years (2005-2015) there has been an increase in settlement land use Samin Sub-watershed, with average of 26.8 ha/year [1]. Land study area is also widely used as plantations and agriculture without regard to soil conditions that are easily eroded prone landslides. Inappropriate caused river siltation problems downstream flooding. The purpose this determine erosion rate Sub-wate...

The importance of work is due to the water in continuation human life and its great role practicing various activities, which concern industry, agriculture fields. research methods included increasing scarcity resources resulting from decrease quantities available individual, deterioration quantity objectives economic social development, thus imposing development definition a management strateg...

Abstract Sengarat fish, with the Latin name Belodontichthys dinema, Bleeker 1851, is a fishery commodity high economic value and became proud species of community was used as an icon Riau Province. The current condition that existence Fish continues to decline due overfishing, use fishing gear not environmentally friendly, habitat destruction. Therefore, it necessary domesticate effort develop ...