Small watershed sediment yield data were evaluated for eight small watersheds ranging from 35.2 to 159.5 ha within the United States Department of Agriculture – Agricultural Research Service Walnut Gulch Experimental Watershed (WGEW) in southeastern Arizona, USA. Stock pond sediment accumulation measurements covering time periods from 30 to 47 years were combined with water level records and es...

Background: Sediments are inseparable fractions of wetland ecosystems that work as a his-torical archive in the process of recording heavy metal aggregation changes. This study was carried out for assessing Co, Ni, and Zn in sediment samples of Mighan Wetland using geo-accumulation index in 2013. Methods:The sediment samples were taken from 11 stations. The samples were subjected to bulk dige...

Over 90 percent of the coastal wetlands in San Francisco Bay have been lost since the industrial revolution. The U.S. Army Corps of Engineers (USACE) is working with the California State Coastal Conservancy and the San Francisco Bay Conservation and Development Commission (BCDC) to reconstruct wetlands at Hamilton Army Airfield (HAAF) and restore 203 ha of tidal habitat to endangered species su...

Removing bottom sediment from water reservoirs and rivers can, on the one hand, be an effective method to restore lakes, other - used for plant production, ensuring recycling of nutrients. The aim this research was evaluate possibilities using various types its impact heavy metal content in soil plants. For purpose, a pot experiment carried out white mustard (Sinapis alba) as test plant. total ...

The Strickland River is the primary sediment source for the Fly River system, a large tropical river that ranks in the global top 20 for both water and sediment discharge. Over the past decade the Strickland sediment discharge has been gauged at many locations. Comprehensive studies are now underway to study the delivery, transport, and storage of sediment throughout this system. A key question...

The health of aquatic organisms can be affected due to anthropogenic activities and limited actions reduce the pollution Black Sea. accumulation organic pollutants (OPs) in environment occurs water, sediment, then biota. turbot (Scophthalmus maeoticus) is a benthic fish commercial interest scarcely studied Sea region, none studies researched OP concentrations its main tissues. In this paper, po...

In this study the distribution and accumulation indices of some heavy metals in sediments and Tilapia zillii fish in freshwater catchment of River Niger by Ajaokuta Steel Company (ASC), North Central Nigeria were investigated. Water, bottom sediments and Tilapia zillii fish samples were collected upstream and downstream of the drainage column by ASC, Ajaokuta. The sample were digested according...

Phosphorus retention (TPacc) was determined in 7 lakes in Ontario, Canada from mass balances and from the direct measurement of phosphorus accumulation in the sediments. Phosphorus retentions determined using the mass balance technique ranged between 20 ± 3.9 and 94 ± 23 mg/m/yr and were slightly lower than those calculated by multiplying sediment total phosphorus (TP) concentrations by sedimen...

introduction the pollution of the aquatic environment with heavy metals and trace elements has become a worldwide problem during recent years, because they are indestructible and most of them have toxic effects on organisms. potentially toxic elements (ptes) added to an aquatic system by anthropogenic and natural sources are distributed during their transport between different compartments of a...

Context Microplastics are widespread in aquatic ecosystems and commonly recorded water, sediment a broad spectrum of marine biota. Yet, the extent to which organisms ingest microplastics directly or indirectly by trophic transfer is largely unknown.Aims This study characterises microplastic abundance across intertidal sediment, biota species different levels, investigates whether biomagnificati...