搜索结果: 1-14 共查到“海洋科学 wetland”相关记录14条 . 查询时间(0.042 秒)
Grass-planting change boosts coastal wetland restoration success
Grass-planting coastal wetland restoration success
2015/11/12
A new study, conducted to restore degraded salt marshes in Florida and the Netherlands, has found that clumping newly planted marsh grasses next to each other, with little or no space in between, can ...
Watershed land use and river engineering drive wetland formation and loss in the Mississippi River birdfoot delta
Watershed land river engineering drive wetland ation loss the Mississippi River birdfoot delta
2014/4/2
The Mississippi River basin was developed for agriculture at an unprecedented scale and intensity within the last 200 yr. These changes favored erosion and sediment transport, which were subsequently ...
Methyl mercury dynamics in a tidal wetland quantified using in situ optical measurements
Methyl mercury dynamics a tidal wetland quantified in situ optical measurements
2014/4/8
We assessed monomethylmercury (MeHg) dynamics in a tidal wetland over three seasons using a novel method that employs a combination of in situ optical measurements as concentration proxies. MeHg conce...
Temporal and spatial variability in the cycling of nitrogen within a constructed wetland: A whole-system stable-isotope-addition experiment
Temporal spatial variability in the cycling of nitrogen a constructed wetland A whole-system stable-isotope-addition experiment
2014/4/17
Constructed wetlands attenuate effluent nutrients, are hydrodynamically well defined, and are a useful proxy for the study of nitrogen (N) transformation in eutrophic natural systems. A whole-system s...
Long-term photochemical and microbial decomposition of wetland-derived dissolved organic matter with alteration of13 C:12C mass ratio
photochemical microbial decomposition wetland-derived dissolved organic matter alteration of13 C:12C mass ratio
2014/4/18
We investigated the long-term photochemical and microbial decomposition of biologically recalcitrant humiclike dissolved organic matter (DOM) leached from a vascular wetland plant, the common rush (Ju...
Investigating the use of macrophyte stable C and N isotopic ratios as indicators of wetland eutrophication: Patterns in the P-affected Everglades
macrophyte stable C N isotopic ratios wetland eutrophication Patterns in the P-affected Everglades
2014/5/5
We investigated the use of stable C and N isotopic ratios as indicators of shifts in nutrient limitation of aquatic macrophytes in native Typha (Typha domingensis Pers.) and Cladium (Cladium jamaicens...
Nutrient excretion by fish in wetland ecosystems and its potential to support algal production
Nutrient excretion support algal production
2014/4/23
We used both direct measurement and bioenergetic methods to examine nitrogen and phosphorus (P) excretion
by fathead minnows in two wetlands over 2 yr. We also assessed the potential importance of nu...
Chemical characteristics of dissolved organic matter in an oligotrophic subtropical wetland/estuarine ecosystem
Chemical characteristics dissolved organic matter oligotrophic subtropical wetland estuarine ecosystem
2014/5/8
Fluorescence properties of whole water samples and molecular characteristics of ultrafiltrated dissolved organic matter (UDOM > 1,000 D) such as lignin phenol and neutral sugar compositions and 13C nu...
Thiols in wetland interstitial waters and their role in mercury and methylmercury speciation
wetland interstitial waters their role in mercury methylmercury speciation
2014/5/19
Organic sulfhydryl compounds, or thiols, are ligands that strongly complex class B metals such as Hg and methylmercury (MeHg). We determined the concentration profiles of five low-molecular-weight thi...
Early diagenesis of plant-derived dissolved organic matter along a wetland, mangrove, estuary ecotone
Early diagenesis wetland
2014/5/19
We studied the role of photochemical and microbial processes in contributing to the transformation of dissolved
organic matter (DOM) derived from various plants that dominate the Florida Everglades. ...
Do wetland lakes exhibit alternative stable states? Submersed aquatic vegetation and chlorophyll in western boreal shallow lakes
wetland lakes stable states Submerged aquatic vegetation chlorophyll western boreal shallow lakes
2014/5/22
Shallow lakes often exhibit alternative vegetative states, one a clear-water state dominated by submersed aquatic vegetation (SAV) and the other a turbid state dominated by pelagic phytoplankton. We d...
Evaluating the influence of macrophytes on algal and bacterial production in multiple habitats of a freshwater wetland
macrophytes on algal bacterial production multiple habitats a freshwater wetland
2014/5/20
Algal 14C uptake and bacterial 3H leucine incorporation were measured over 20 months to assess the influence of macrophytes on the spatial distribution and magnitude of microbial production and the re...
Kinetics of microbial Fe(III) oxide reduction in freshwater wetland sediments
Kinetics of microbial Fe(III) oxide reduction freshwater wetland sediments
2014/5/26
The kinetics of microbial amorphous Fe(III) oxide reduction was investigated in sediments from a freshwater wetland in north central Alabama, USA. Fe(III) oxide concentrations decreased exponentially ...
Quantifying groundwater discharge through fringing wetlands to estuaries: Seasonal variability, methods comparison, and implications for wetland-estuary exchange
Quantifying groundwater discharge fringing wetlands to estuaries Seasonal variability, methods comparison implications for wetland-estuary exchange
2014/6/9
Because groundwater discharge along coastal shorelines is often concentrated in zones inhabited by fringing wetlands, accurately estimating discharge is essential for understanding its effect on the f...