1,481 results match your criteria wetlands years

Response of Calamagrostis angustifolia to burn frequency and seasonality in the Sanjiang Plain wetlands (Northeast China).

J Environ Manage 2021 Sep 17;300:113759. Epub 2021 Sep 17.

Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Shengbei Street 4888, 130102, Changchun, China. Electronic address:

Fire is an important disturbance in many wetlands, which are key carbon reservoirs at both regional and global scales. However, the effects of fire on wetland vegetation biomass and plant carbon dynamics are poorly understood. We carried out a burn experiment in a Calamagrostis angustifolia wetland in Sanjiang Plain (Northeast China), which is widespread wetland type in China and frequently exposed to fire. Read More

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September 2021

Compositions of sequestrated soil carbon in constructed wetlands of Taiwan.

Sci Total Environ 2021 Sep 11;805:150290. Epub 2021 Sep 11.

Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Taiwan.

Constructed wetlands are an ecological engineering technology that has been widely applied to treat anthropogenic wastewater. Until now, few studies have focused on soil carbon (C) in the constructed treatment wetlands in tropical regions. Therefore, this study provides insight into the changes in soil C composition of tropically constructed wetlands at different ages. Read More

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September 2021

Criteria for effective regional scale catchment to reef management: A case study of Australia's Great Barrier Reef.

Mar Pollut Bull 2021 Sep 15;173(Pt A):112882. Epub 2021 Sep 15.

C(2)O Consulting coasts climate oceans, Townsville, Australia; ARC Centre for Coral Reef Studies, James Cook University, Townsville, Australia.

Many coastal and marine ecosystems around the world are under increasing threat from a range of anthropogenic influences. The management of these threats continues to present ongoing challenges, with many ecosystems increasingly requiring active restoration to support or re-establish the ecosystem's biological, cultural, social and economic values. The current condition of Australia's Great Barrier Reef (GBR) and its threats, including water quality, climate change and the loss of wetlands, causing the continuing decline in the GBR's ecological condition and function, has received global attention. Read More

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September 2021

Rainfall driven and wild-bird mediated avian influenza virus outbreaks in Australian poultry.

BMC Vet Res 2021 Sep 14;17(1):306. Epub 2021 Sep 14.

Centre for Integrative Ecology, School of Life & Environmental Sciences, Deakin University, 75 Pigdons Road, 3216, Geelong, VIC, Australia.

Globally, outbreaks of Avian Influenza Virus (AIV) in poultry continue to burden economies and endanger human, livestock and wildlife health. Wild waterbirds are often identified as possible sources for poultry infection. Therefore, it is important to understand the ecological and environmental factors that directly influence infection dynamics in wild birds, as these factors may thereby indirectly affect outbreaks in poultry. Read More

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September 2021

Determining vegetation metric robustness to environmental and methodological variables.

Environ Monit Assess 2021 Sep 14;193(10):647. Epub 2021 Sep 14.

Department of Natural Resources and Environmental Sciences, University of Illinois At Urbana-Champaign, 1102 S. Goodwin Ave, Urbana, IL, 61801, USA.

Land managers need reliable metrics for assessing the quality of restorations and natural areas and prioritizing management and conservation efforts. However, it can be difficult to select metrics that are robust to sampling methods and natural environmental differences among sites, while still providing relevant information regarding ecosystem changes or stressors. We collected herbaceous-layer vegetation data in wetlands and grasslands in four regions of the USA (the Midwest, subtropical Florida, arid southwest, and coastal New England) to determine if commonly used vegetation metrics (species richness, mean coefficient of conservatism [mean C], Floristic Quality Index [FQI], abundance-weighted mean C, and percent non-native species cover) were robust to environmental and methodological variables (region, site, observer, season, and year), and to determine adequate sample sizes for each metric. Read More

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September 2021

Water quality limitations for tadpoles of the Wood Frog in the northern Great Plains, Canada.

David B Donald

Environ Monit Assess 2021 Sep 8;193(10):636. Epub 2021 Sep 8.

Environment and Climate Change Canada, Alvin Hamilton Building, 1783 Hamilton Street, Regina, SK, S4P 2B4, Canada.

Some wetlands in the northern Great Plains support hundreds to thousands of late-stage tadpoles providing important sources of recruitment to the Wood Frog (Lithobates sylvaticus) population while many other wetlands produce none. Relationships between water quality and late-stage tadpole abundance were determined to identify the water quality parameters associated with tadpole abundance. Water samples were collected, and late-stage tadpole abundances were assessed once each year in late June for 12 years in 26 wetlands. Read More

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September 2021

Impact of COVID-19 lockdown on small-scale fishers (SSF) engaged in floodplain wetland fisheries: evidences from three states in India.

Environ Sci Pollut Res Int 2021 Sep 6. Epub 2021 Sep 6.

ICAR-Central Inland Fisheries Research Institute, Monirampur, Barrackpore, Kolkata, 700120, India.

The COVID-19 pandemic has created unprecedented human health crisis in recent global history with rippling social and economic effects. The outbreak in India has resulted in emergency lockdown in the country for more than 2 months, and that caused decline in the catch, demand, and supply of fish. It has severely altered the life and livelihoods of the floodplain wetland fishers. Read More

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September 2021

50 Years on, w(h)ither the Ramsar convention? A case of institutional drift.

Biodivers Conserv 2021 Aug 30:1-19. Epub 2021 Aug 30.

Copernicus Institute of Sustainable Development, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, The Netherlands.

Wetlands have declined in area and quality at an accelerating pace in the last 50 years. Yet, the last 50 years is when international attention has been focussed on wetlands through the Ramsar Convention. An analysis of how the convention has evolved over the past 50 years suggests it has been drifting away from its original mandate in a maladaptive manner, and this drift is a problem for achieving its original objectives. Read More

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Paludiculture as paludifuture on Dutch peatlands: An environmental and economic analysis of Typha cultivation and insulation production.

Sci Total Environ 2021 Oct 31;792:148161. Epub 2021 May 31.

Copernicus Institute of Sustainable Development, Utrecht University, Vening Meinesz Building A, Princetonlaan 8a, 3584 CB Utrecht, the Netherlands. Electronic address:

Paludiculture, the cultivation of crops on rewetted peatlands, is often proposed as a viable climate change mitigation option that reduces greenhouse gas emissions (GHGe), while simultaneously providing novel agricultural business options. In West Europe, experiments are ongoing in using the paludicrop cattail (Typha spp.) as feedstock for insulation panel material. Read More

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October 2021

Estimating the Effects of a Hurricane on Carbon Storage in Mangrove Wetlands in Southwest Florida.

Plants (Basel) 2021 Aug 23;10(8). Epub 2021 Aug 23.

Everglades Wetland Research Park, The Water School, Florida Gulf Coast University, 4940 Bayshore Drive, Naples, FL 34112, USA.

Tropical and subtropical mangrove swamps, under normal conditions, can sequester large amounts of carbon in their soils but as coastal wetlands, they are prone to hurricane disturbances. This study adds to the understanding of carbon storage capabilities of mangrove wetlands and explores how these capacities might change within the scope of a changing storm climate. In September 2017, Naples Bay, FL, USA (28°5' N, 81°47' W) encountered a direct hit from hurricane Irma, a Saffir-Simpson category 3 storm. Read More

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A review on the removal of heavy metals and metalloids by constructed wetlands: bibliometric, removal pathways, and key factors.

World J Microbiol Biotechnol 2021 Aug 21;37(9):157. Epub 2021 Aug 21.

Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China.

Heavy metals and metalloids (HMMs) pose a serious threat to both environmental and human health. The unique characteristics and environmental toxicity of HMMs make their removal from the environment a major challenge. Constructed wetlands (CWs) are increasingly being used as an eco-friendly system for the removal of HMMs from aqueous environments. Read More

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Evaluation of long-term phosphorus uptake by and plants in pilot-scale constructed wetlands.

Int J Phytoremediation 2021 Aug 12:1-12. Epub 2021 Aug 12.

Engineering and Biotechnology Environmental Group, Environmental Science Faculty & EULA-Chile Center, Universidad de Concepción, Concepción, Chile.

The aim of this study was to evaluate long-term phosphorus (P) retention in a pilot-scale system made of four horizontal subsurface flow (HSSF) constructed wetlands for wastewater treatment. Each wetland had an area of 4.5 m and was operated for nearly 8 years (2833 days). Read More

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Repeated large-scale mechanical treatment of invasive Typha under increasing water levels promotes floating mat formation and wetland methane emissions.

Sci Total Environ 2021 Oct 21;790:147920. Epub 2021 May 21.

Department of Natural Resources and the Environment, Center for Environmental Science and Engineering, University of Connecticut, 1376 Storrs Road Unit 4087, Storrs, CT 06269, USA.

Invasive species management typically aims to promote diversity and wildlife habitat, but little is known about how management techniques affect wetland carbon (C) dynamics. Since wetland C uptake is largely influenced by water levels and highly productive plants, the interplay of hydrologic extremes and invasive species is fundamental to understanding and managing these ecosystems. During a period of rapid water level rise in the Laurentian Great Lakes, we tested how mechanical treatment of invasive plant Typha × glauca shifts plant-mediated wetland C metrics. Read More

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October 2021

Efficiency and plant indication of nitrogen and phosphorus removal in constructed wetlands: A field-scale study in a frost-free area.

Sci Total Environ 2021 Aug 2;799:149301. Epub 2021 Aug 2.

Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China. Electronic address:

Frost-free areas have suitable climate for wetland plant growth and constructed wetlands (CW) technology. Information on the quantification of plant biomass and uptake efficiency in field-scale CWs is limited in these climates. The removal efficiency of total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD), and total suspended solids (TSS) in wastewater from sewage plants, domestic sewage, and an industrial park in 15 rural and urban CWs in Guangdong Province, China, with an average temperature of 30 °C was evaluated. Read More

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The role of soils in regulation of freshwater and coastal water quality.

Philos Trans R Soc Lond B Biol Sci 2021 09 4;376(1834):20200176. Epub 2021 Aug 4.

College of Resources and Environmental Sciences, Nanjing Agricultural University, Jiangsu 210095, People's Republic of China.

Water quality regulation is an important ecosystem service function of soil. In this study, the mechanism by which soil regulates water quality was reviewed, and the effects of soil management on water quality were explored. A scientometrics analysis was also conducted to explore the research fields and hotspots of water quality regulation of soil in the past 5 years. Read More

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September 2021

Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.

PLoS One 2021 5;16(8):e0254701. Epub 2021 Aug 5.

Water Research Laboratory, School of Civil and Environmental Engineering, UNSW Sydney, Sydney, NSW, Australia.

Land reclamation projects and the installation of drainage infrastructure has impacted coastal wetlands worldwide. By altering water levels and inundation extent, these activities have changed the viable ecosystems onsite and resulted in the proliferation of freshwater species. As more than 50% of tidal wetlands have been degraded globally over the last 100 years, the importance of this issue is increasingly being recognised and tidal wetland restoration projects are underway worldwide. Read More

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Use of spatio-temporal habitat suitability modelling to prioritise areas for common carp biocontrol in Australia using the virus CyHV-3.

J Environ Manage 2021 Oct 13;295:113061. Epub 2021 Jul 13.

CSIRO Australian Centre for Disease Preparedness (ACDP), Geelong, VIC, Australia. Electronic address:

Common carp (Cyprinus carpio) are an invasive species of the rivers and waterways of south-eastern Australia, implicated in the serious decline of many native fish species. Over the past 50 years a variety of control options have been explored, all of which to date have proved either ineffective or cost prohibitive. Most recently the use of cyprinid herpesvirus 3 (CyHV-3) has been proposed as a biocontrol agent, but to assess the risks and benefits of this, as well as to develop a strategy for the release of the virus, a knowledge of the fundamental processes driving carp distribution and abundance is required. Read More

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October 2021

Temporal deposition of copper and zinc in the sediments of metal removal constructed wetlands.

PLoS One 2021 3;16(8):e0255527. Epub 2021 Aug 3.

Savannah River Ecology Laboratory, University of Georgia, Aiken, South Carolina, United States of America.

The objective of this study was to explore the effects of time, seasons, and total carbon (TC) on Copper (Cu) and Zinc (Zn) deposition in the surface sediments. This study was performed at the H-02 constructed wetland on the Savannah River Site (Aiken, SC, USA). Covering both warm (April-September) and cool (October-March) seasons, several sediment cores were collected twice a year from the H-02 constructed wetland cells from 2007 to 2013. Read More

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Danish wetlands remained poor with plant species 17-years after restoration.

Sci Total Environ 2021 Jul 20;798:149146. Epub 2021 Jul 20.

Department of Bioscience, Aarhus University, Vejlsøvej 25, 8600 Silkeborg, Denmark.

For more than two decades, wetland restoration has been successfully applied in Denmark as a tool to protect watercourses from elevated nutrient inputs from agriculture, but little is known about how the flora and fauna respond to restoration. The main objective of this study was therefore to: (1) examine plant community characteristics in 10 wetland sites in the River Odense Kratholm catchment, restored between 2001 and 2011 by re-meandering the stream and disconnecting the tile drains, and (2) explore whether the effects of restoration on plant community characteristics change with the age of the restoration. Specifically, we hypothesised that plant community composition, species richness and diversity would improve with the age of the restoration and eventually approach the state of natural wetland vegetation. Read More

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Natural treatment system for wastewater (NTSW) in a livestock farm, with five years of pilot plant management and monitoring.

Chemosphere 2021 Jul 13;285:131529. Epub 2021 Jul 13.

Institute for Environmental Studies and Natural Resource, University of Las Palmas de Gran Canaria, Canary Island, Spain. Electronic address:

This paper reports results of a 5-year trial study of a natural treatment system for wastewater (NTSW) on a livestock pig farm on Gran Canaria (Canary Islands, Spain). The pilot plant consist of a rotary screen, a first-generation multi-chamber digester, and two horizontal subsurface flow treatment wetlands (HSFCW) with a pond installed between them. Results show that the removal efficiency of total chemical oxygen demand (CODt), total suspended solids (TSS), volatile solids (VS) and total dissolved solids (TDS) of the treatment were 91. Read More

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Removal, distribution and retention of metals in a constructed wetland over 20 years.

Sci Total Environ 2021 Nov 15;796:149062. Epub 2021 Jul 15.

Savannah River Ecology Laboratory, Aiken, SC 29808, United States.

The A-01 wetland treatment system (WTS) was designed to remove metals (primarily copper) from the effluent at the A-01 National Pollution Discharge Elimination System (NPDES) outfall at the Savannah River Site, Aiken, SC. This research investigated metal removal, distribution and retention in the A-01 WTS over a period of 20 years. The findings are important for ensuring continued metal sequestration in the A-01 WTSs over time, providing management guidance for constructed wetlands, and investigating changes in metal remediation effectiveness as a wetland ages. Read More

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November 2021

Ecosystem carbon losses following a climate-induced mangrove mortality in Brazil.

J Environ Manage 2021 Nov 26;297:113381. Epub 2021 Jul 26.

Grupo de Ecologia Bêntica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES, 29075-910, Brazil. Electronic address:

Drought events may induce mangrove mortality and dieback events worldwide as a result of climate extremes. As mangroves sequester large quantities of carbon, quantifying the losses of these stocks following climate disturbances may guide wetland governance strategies globally. In Southeast Brazil, we determined the total ecosystem carbon stocks (TECS) of pristine mangroves that were up to 1851 Mg of carbon per hectare (Mg C ha), which are the highest stocks measured from South American and raising estimates of Brazil's mangrove TECS to 0. Read More

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November 2021

High sulfate concentrations maintain low methane emissions at a constructed fen over the first seven years of ecosystem development.

Sci Total Environ 2021 May 25;789:148014. Epub 2021 May 25.

Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON N2L 3G1, Canada.

Wetlands comprise a large expanse of the pre-disturbance landscape in the Athabasca Oil Sands Region (AOSR) and have become a focus of reclamation in recent years. An important aspect of wetland reclamation is understanding the biogeochemical functioning and carbon exchange, including methane (CH) emissions, in the developing ecosystem. This study investigates the drivers of CH emissions over the first seven years of ecosystem development at a constructed fen in the AOSR and looks towards future CH emissions from this site. Read More

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A unifying framework for analyzing temporal changes in functional and taxonomic diversity along disturbance gradients.

Ecology 2021 Jul 27:e03503. Epub 2021 Jul 27.

Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, 14853, USA.

Frameworks exclusively considering functional diversity are gaining popularity, as they complement and extend the information provided by taxonomic diversity metrics, particularly in response to disturbance. Taxonomic diversity should be included in functional diversity frameworks to uncover the functional mechanisms causing species loss following disturbance events. We present and test a predictive framework that considers temporal functional and taxonomic diversity responses along disturbance gradients. Read More

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Assessing the impact of large-scale farmland abandonment on the habitat distributions of frog species after the Fukushima nuclear accident.

Oecologia 2021 Aug 27;196(4):1219-1232. Epub 2021 Jul 27.

Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan.

Rice paddies function as wetlands; therefore, abandoned paddy fields cause a loss of habitats for aquatic species, such as amphibians. Following the accident at the Fukushima Daiichi Nuclear Power Plant in 2011, paddy fields around the plant were abandoned and rapidly dried. To identify the impact of large-scale abandonment of paddy fields on the habitats of frogs, we investigated changes in the distributions of four frogs that breed in paddy fields using niche modeling and field surveys. Read More

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Constructed wetland substrates: A review on development, function mechanisms, and application in contaminants removal.

Chemosphere 2021 Jul 19;286(Pt 1):131564. Epub 2021 Jul 19.

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, China. Electronic address:

Constructed wetlands (CWs) are economical, efficient, and sustainable wastewater treatment method. Substrates in CWs inextricably link with the other key components and significantly influence the performance and sustainability of CWs. Gradually, CWs have been applied to treat more complex contaminants from different fields, thus has brought forward new demand on substrates for enhancing the performance and sustainability of CWs. Read More

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Belowground productivity varies by assessment technique, vegetation type, and nutrient availability in tidal freshwater forested wetlands transitioning to marsh.

PLoS One 2021 16;16(7):e0253554. Epub 2021 Jul 16.

National Park Service, Jean Lafitte National Historical Park and Preserve, New Orleans, Louisiana, United States of America.

Wetlands along upper estuaries are characterized by dynamic transitions between forested and herbaceous communities (marsh) as salinity, hydroperiod, and nutrients change. The importance of belowground net primary productivity (BNPP) associated with fine and coarse root growth also changes but remains the dominant component of overall productivity in these important blue carbon wetlands. Appropriate BNPP assessment techniques to use in various tidal wetlands are not well-defined, and could make a difference in BNPP estimation. Read More

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Estuarine oiling increases a long-term decline in mussel growth.

Environ Pollut 2021 Sep 3;284:117506. Epub 2021 Jun 3.

Belle Baruch Marine Field Lab, North Inlet -Winyah Bay National Estuarine Research Reserve, PO Box1630, Georgetown, SC, 29442, USA. Electronic address:

The ribbed mussel, Geukensia granosissima, cycles nutrients, contributes to soil stability, and can be a major component of predator-prey communities in salt marshes. Mussels were exposed to the 2010 Deepwater Horizon oil spill in the Gulf of Mexico, and salt marshes remain contaminated eight years later. We hypothesized that the oiled mussels had reduced annual growth, altered population size frequency, and perhaps changed valve morphometrics. Read More

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September 2021

Potential and mechanism of glomalin-related soil protein on metal sequestration in mangrove wetlands affected by aquaculture effluents.

J Hazard Mater 2021 Jun 27;420:126517. Epub 2021 Jun 27.

Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China. Electronic address:

Aquaculture effluent discharge containing heavy metals affects estuarine mangrove wetlands. Glomalin-related soil protein (GRSP) is recalcitrant organic matter that can be trapped in mangrove wetlands and is critical to metal sequestration. However, studies on the effects of long-term aquaculture effluents on metal pollution in adjacent mangrove wetlands and the ecological role of GRSP are lacking. Read More

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BERM: a Belowground Ecosystem Resiliency Model for estimating Spartina alterniflora belowground biomass.

New Phytol 2021 10 13;232(1):425-439. Epub 2021 Aug 13.

US Geological Survey, Moffett Field, CA, 94035, USA.

Spatiotemporal patterns of Spartina alterniflora belowground biomass (BGB) are important for evaluating salt marsh resiliency. To solve this, we created the BERM (Belowground Ecosystem Resiliency Model), which estimates monthly BGB (30-m spatial resolution) from freely available data such as Landsat-8 and Daymet climate summaries. Our modeling framework relied on extreme gradient boosting, and used field observations from four Georgia salt marshes as ground-truth data. Read More

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October 2021