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Hyporheic exchange is important in increasing stream water transit time through basins and enhancing redox-sensitive biogeochemical reactions influencing downstream water quality. Such exchange may be enhanced by beaver dams which are common throughout low order streams including those originating in peatlands. To understand the influence of beaver dams on hyporheic flows and biogeochemical properties,...
This study investigates producer preferences for a voluntary program that compensates farmers for maintaining working wetlands on their land. A choice experiment designed to consider hypothetical program attributes showed an increase in payment and absence of additional conservation production requirements in surrounding cropland increases the probability of enrollment. Ranchers were more responsive...
Rotifer dominance in wetland ecosystems is due to their ability to survive and reproduce in the presence of cyanobacteria, ability to occupy different niches and elimination of competing crustaceans by predation. In addition, quality and quantity of food and physical and chemical variables affect the rotifer abundances in these waterbodies. Seasonal variations in food also affect the rotifer body...
The objectives of this study were to classify the small seasonal ponds that develop in the Cuvelai Seasonal Wetland System in north-central Namibia based on soil physicochemical properties so that potential agricultural uses of the ponds could be assessed. Satellite imagery was used to examine the relationships between soil characteristics and the probability of water presence in the region. Soil...
Mangrove forests are the most productive ecosystem for tropical and subtropical flora, but they are experiencing serious loss. Urgent measures should be taken for conservation and restoration, including investigation of mangrove species constitution using satellite imagery in which texture provides effective information. However, differentiation by texture for various species of mangroves is underexplored...
Management of riverine ecosystems often requires mitigation of alien plant invasions. Understanding how environmental variation within watersheds influences distribution and spread of invasive plants is essential for restoration of impacted ecological functions. Ludwigia hexapetala, an emergent macrophyte from South America, has aggressively invaded wetlands in many regulated rivers. Its clonal fragments...
Complexity is an accepted characteristic of social-ecological systems. However, its analysis has been mostly theoretical with few empirical studies. Complex systems share three features: radical openness (the system cannot be understood unless an extended, global, environment is considered), radical uncertainty (emergence and non-linearity make them impossible to be fully predictable) and contextuality...
This study focuses on comparing the driving ecological factors and community diversity of fen vegetation from the plain part of the South Ural region with those of the mountain fen vegetation, previously described by us (Ivchenko and Znamenskiy Russian Journal of Ecology 47:453–459, 2016), by means of vegetation data clustering and gradient analysis. The indicator values by several authors (H Ellenberg,...
We assessed area and habitat heterogeneity effects on avian richness and composition in bofedales that differed in size and microhabitat diversity. We analyzed data collected in 2 seasons and 24 bofedales using General Linear Models, Ordinary Least Square models to establish the relationship of predictor variables on richness and Akaike Information Criterion for model selection. We evaluate composition...
Many coastal wetlands are subject to the combined effects of reduced sediment input and increased nutrient loads from watersheds. Restoration strategies focused on increasing marsh elevation and acreage can involve adding sediment through dredge sediment deposition or diversion of river water. It is unclear, however, how sediment inputs influence plant productivity in areas also receiving high nutrient...
Eutrophication has caused many serious environmental issues in lakes. Submerged vegetation, which plays a key role in maintaining the clear water state of shallow lakes, is strongly influenced by water quality and sediment properties. In this study, we seasonally investigated the water quality, sediment properties and submerged plant communities in 18 sites in Lake Honghu of China, an internationally...
The local development policies of coastal tourism destinations are frequently focused on popular resources, such as beaches, and tend to overlook coastal wetlands, which are often located in the interstitial spaces of urbanistic transformations caused by mass tourism and considered untended marginal sites. This article investigates the uses and preferences of visitors to these wetlands with the goal...
Wetlands are influenced by direct disturbances due to agricultural practices, as well as by indirect effects from the surrounding landscapes. Management and restoration require condition assessments, which are usually based on properties of the vegetation and soils near the surface. Less knowledge exists about the effects of disturbance deeper down the soil profile. In this study, multi-element analysis...
Development around estuaries leads to degradation of tidal wetlands and alteration of tidal flows, which impacts on fishery productivity. Contemporary management seeks to lessen land-use impacts on aquatic environments and restore ecosystem services, and knowledge of potential benefits will inform investment and galvanize community action. We present a framework to estimate the potential benefits...
The relative importance of sexual vs. asexual propagules in wetland plant invasions is poorly understood, particularly for their importance in increasingly disturbed, resource-rich environments. Using the invasive wetland grass Phragmites australis as a model, we evaluated the resource needs of its seeds and rhizome fragments. In a greenhouse experiment where we manipulated nitrogen and propagule...
Ecosystem services provided by wetlands, defined as the benefits and uses a wetland provides to people, are often overlooked by decision and policy makers. This not only hinders wetland conservation efforts, but failure to acknowledge and protect these services threatens the communities who rely on the wetlands. Inclusion of stakeholders in the creation of wetland management plans can alleviate this...
Worldwide, mangroves are a wetland biome that has both ecological and societal importance. Across the coastal region of the Bay of Bengal, the Sundarbans is the largest continual mangrove forest in the world. One way to examine growth trends in tree species is with tree-ring analysis, or dendrochronology. However, tropical applications of dendrochronology are often met with limited success because...
Aboveground production responses of Spartina alterniflora and S. patens in estuaries in Massachusetts, USA were assessed in relation to temporal (date) and physical (elevation and distance from creek edge) factors as well as nitrogen loading using stem δ15N, water column dissolved inorganic nitrogen (DIN), and upland nitrogen loading as nitrogen input proxies. All nitrogen input proxies had negative...
Riparian ecotones in arid regions often contain unique species and have higher species richness and abundance relative to upland habitats making them of higher conservation priority than other habitats. However, such differences in species richness and abundance may not be apparent in more mesic regions. We compared species frequency of occurrence and abundance, richness and turnover of bird assemblages...
Exotic plant invasion, a global issue, has a tremendous impact on ecology, economy, human, and animal health. Alligator weed (the world’s first aquatic weed) is a serious invasive weed in 32 different countries of South America, Australia, Asia, and North America. Recently, it has been recorded as a threat weed of rice, maize, soybean, vegetables, fruit trees, and pastures, causing 19–45% yield losses...
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