نتایج جستجو برای: wetland dynamics

تعداد نتایج: 449405  

2004
Michael R. McHale Christopher P. Cirmo Myron J. Mitchell Jeffrey J. McDonnell

Wetlands often form the transition zone between upland soils and watershed streams, however, stream–wetland interactions and hydrobiogeochemical processes are poorly understood. We measured changes in stream nitrogen (N) through one riparian wetland and one beaver meadow in the Archer Creek watershed in the Adirondack Mountains of New York State, USA from 1 March to 31 July 1996. In the riparia...

2016
Tan Li Xiang Gao Hongyan Li

Wetland ecosystems are one of the three great ecosystems on Earth. With a deepening of research on wetland ecosystems, researchers have paid more and more attention to wetland ecosystem services such as flood mitigation, climate control, pollution prevention, soil-erosion prevention, biodiversity maintenance, and bio-productivity protection. This study focuses on a lakeside wetland ecosystem in...

2009
Baicheng Xie Chunxia Zhang Xiqiang Shuai Boliang Luo

Wetland is a multifunctional ecosystem in the earth, wetlands possess irreplaceable and enormous ecological functions and serve as an essential life supporting system. how to apply the new and high technology to the study of wetland has become the key point in wetland study area in our country. RS, GIS and GPS technology provide a new method for resource and ecological environment monitor. In t...

Journal: :Bioresource technology 2014
J B A Arends S Van Denhouwe W Verstraete N Boon K Rabaey

A highly-loaded constructed wetland (up to 44±21gCODm(-2)d(-1)) was connected to a bioelectrochemical system (BES) to produce hydrogen peroxide for disinfection purposes. The anode delivered a current from the wetland effluent up to 3.5Am(-2) (maximum 62% anodic efficiency) but was limited in the supply of organic carbon. Hydrogen peroxide could be produced in situ in wetland effluent. Producti...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2014
M N P Henares A F M Camargo

The efficiency of a series of wetland colonized with Eichhornia crassipes and Salvinia molesta to treat the effluent of a giant river prawn (Macrobrachium rosenbergii) broodstock pond was evaluated in this study. The experimental design was completely randomized and was performed in 9 rectangular tanks (1.6 m3) with three treatments (constructed wetlands) and three replicates. The treatment typ...

2016
Nava M. Tabak Magdeline Laba Sacha Spector

Sea Level Rise (SLR) caused by climate change is impacting coastal wetlands around the globe. Due to their distinctive biophysical characteristics and unique plant communities, freshwater tidal wetlands are expected to exhibit a different response to SLR as compared with the better studied salt marshes. In this study we employed the Sea Level Affecting Marshes Model (SLAMM), which simulates reg...

2008
Anneli Ågren Ishi Buffam Martin Berggren Kevin Bishop Mats Jansson Hjalmar Laudon

[1] The character and quantity of dissolved organic carbon (DOC) were studied in nine small boreal streams and adjacent soils during two years, with focus on the spring snowmelt period. The streams cover a forest-wetland gradient, spanning from 0% to 69% wetland coverage. Lower values of the absorbance ratio measured at 254 nm and 365 nm (A254/A365), in both soil plots and streams, indicated th...

Journal: :Environmental management 2012
Andrew T Kozich Kathleen E Halvorsen

The United States has lost about half its wetland acreage since European settlement, and the effectiveness of current wetland mitigation policies is often questioned. In most states, federal wetland laws are overseen by the U.S. Army Corps of Engineers, but Michigan administers these laws through the state's Department of Environmental Quality (MDEQ). Our research provides insight into the effe...

2012
Stefania Scarsoglio Paolo D'Odorico Francesco Laio Luca Ridolfi

Water availability is a major environmental driver affecting riparian and wetland vegetation. The interaction between water table fluctuations and vegetation in a stochastic environment contributes to the complexity of the dynamics of these ecosystems. We investigate the possible emergence of spatial patterns induced by spatio-temporal stochastic resonance in a simple model of groundwater-depen...

2011
Sumith Pathirana Clement Akumu

Climate change will have a profound impact on coastal ecosystems, particularly, wetland cover types. It is therefore important that such changes are predicted so that appropriate adaptations can be suggested. This study investigated the changes of spatial distribution of four coastal wetland plant species in response to potential climate change in northeastern NSW, Australia. The study used BIO...

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