This thesis examines the effects of stress factors and the potential of recovery and restoration in freshwater wetlands. Impacts of changes in environmental conditions on wetland vegetation are studied by comparing wetlands in both stressed
landscapes in the Netherlands and fairly undistributed landscapes in the Biebrza valley in Poland. The Biebrza valley acts as a reference wetland in this analysis. In the second part of this book experiments with the restoration of acidified and eutrophicated
Wetlands in drylands : geomorphological and sedimentological characteristics, with emphasis on examples from southern Africa
This paper addresses the apparent paradox of wetlands in drylands, focusing particularly on the geomorphology and sedimentology of wetlands in southern Africa. The AA. compare and contrast the physical characteristics of wetlands in drylands
with wetlands in more humid regions. They consider the implications of these findings for the management of wetlands in drylands.
This article reviews the role of hydrology in wetland delimitation and classification, and seeks to clarify linkages between wetland vegetation and hydrology across wetland types.
Jamaican wetlands were formerly much more extensive. The process of conversion into drylands for agriculture began with the expansion of sugar cane in the eighteenth century. As the coastal towns expanded, reclamation was also implemented for urban
development and as anti-malaria measures. Wetland reclamation, however, usually incurs a serious loss of natural resources not always outweighed by the land gained, and a strong case for preserving wetlands in their natural state can be made. (MPM).
Public awareness of wetlands and their conservation
A negative attitude toward wetlands along with an ignorance regarding them and a lack of awareness about their value have often led to their transformation by humans. Their massive degradation and consequently their disappearance were the main
reasons for the establishment of the Ramsar Convention, the first intergovernmental agreement on the preservation and sustainable use of wetlands. There are three wetlands in Slovenia on the Ramsar List of Wetlands of International Importance: the Sečovlje
salt pans, Škocjan Caves, and Cerknica Lake and its surroundings. Using a questionnaire survey, we tried to ascertain the level of public awareness about wetlands and attitudes toward their conservation. On the basis of the results acquired, we
discovered that public awareness about wetlands conservation depends primarily on the location of residence and the social structure of the population. A negative opinion on the advantages of life in the protected areas within which the Ramsar localities
are located was revealed, the result of a lack of information and insufficient knowledge of the environmental and economic functions of wetlands. Effective programs of education and involvement of the population in activities in protected areas must
Study on ecological fragility of wetlands in Sanjiang Plain
As the largest inland freshwater wetlands in China, Sanjiang Plain plays an important role in environmental protection from local to global scale. Characteristics and reasons of wetland ecological fragility in Sanjiang Plain are analyzed
and then the evaluation method and index system on ecological fragility of wetlands in Sanjiang Plain are presented and discussed. The result of the evaluation shows that the wetland ecological fragility in Sanjiang Plain is serious.
Assessing the degradation of saline wetlands in an arid agricultural region in Spain
The aim of this research is to establish a methodology for the systematic study of saline wetlands in southern Monegros. A wetlands inventory was produced and updated using satellite data, field observations, and orthophotographs, together
with the available disperse data about these wetlands'toponomy and location. The degraded landscape appearance of the surviving wetlands, mainly affected by agricultural intensification, dumping and farming, has been quantitatively assessed. The integration of remote
sensing and GIS with field data was a powerful tool to track recent changes and assess wetland disturbance.
Wetland construction and distribution in the Lhasa river basin were analyzed based on multi-source data including field investigation data, CBERS remote sensing data and other thematic data provided by 3S technology. The wetlands are mainly
dominated by natural wetland. The results provide important reference to protection and restoration of wetland ecosystem, regulation and utility of wetland resources, and a scientific basis for monitoring wetland change in the region.
Wetland changes in Jianghan Plain and simulation with GIS
Thiss paper describes how to combine GIS with geo-informatics and geography to simulate the wetland changes happened in Jianghan Plain in the middle reaches of the Yantze River in the last 40 years, and present the results. The environmental
implications of the wetland changes are discussed.
on the development of coastal vegetated wetlands in China
This paper discusses in detail the distributions, plant characteristics and environmental conditions of the coastal vegetated wetlands in China. Given a great amount of fine sediment by rivers, China's coastal wetlands are accumulated rapidly
. This factor combined with the human's ruthless reclaimation makes the marshes inmature. The vegetated wetlands are classified into 4 types, each having differential features in geomorphological background, deposits and vegetation.
Characterizing wetland landscapes : a spatiotemporal analysis of remotely sensed data at Cheyenne Bottoms, Kansas
Wetland research and management implications
Using Landsat Thematic Mapper data and small-format aerial photographs, this study monitors wetland change over a period of 15 years at Cheyenne Bottoms wetland site. Noticeable fluctuations in wetland cover resulting from both variable
precipitation patterns and changing stewardship activities are observed. The results suggest that multitemporal remote sensing methods are well suited to capturing qualitative information on change in wetland and other similar environments observing fuzzy
Spatial distribution patterns of wetland plants in relation to environmental gradient in the Honghe National Nature Reserve, Northeast China
In the Honghe National Nature Reserve (HNNR), biophysical parameters’ values of wetland plants were obtained by field sampling methods, and wetland mapping at the community scale was completed using remote sensing techniques. Digital delineation
distribution patterns of wetland plants and the corresponding environmental gradients. The results indicate how 4 ecotypes of wetland plants spatially transit from forest swamp, shrub wetland and meadow into marsh wetland with increasing wetness index and water
table. And they also show how wetland spatial distribution patterns are controlled by an environmental gradient of wetness.
[b1] Key Lab. of wetland Ecology and Environment, Northeast Inst. of Geography and Agroecology, CAS, Changchun, Chine
Terminal lake flooding and wetland expansion in Nelson County, North Dakota
Wetland research and management implications
This paper examines the physical dimensions of 2 colocated distinct flood hazards, terminal lake flooding and wetland flooding, in the Stump Lake closed subbasin within the prairie landscape in north-central North Dakota. The AA. review the physical
basis of each flood type. This analysis will establish the magnitude of wetland flooding in comparison to terminal lake flooding in the study area. Stump Lake flooding is spatially restricted and has had limited impact upon the surrounding lakeshore
environment. Rural wetland flooding is pervasive and has a deleterious effect upon the region's agricultural economic base.
Intensive wetland agriculture in Mesoamerica: space, time, and form
The analysis employs maps to identify changing relationships among distribution, hectareage, and morphometry in order to address wetland agriculture's role in the emergence of sedentism, urbanism, statism, and corollary environmental change; its
Ecological and hydrological state of wetlands of the cultural European landscape
In this paper, AA. compare the development, the present state and the potentials of two geographical areas, which used to be wetlands, but during the expansion of human mankind they underwent significant changes. The areas are the Trebonsko
Relative ages of wetland and upland surfaces as indicated by pedogenic development
This paper investigates the relationship between the relative age of Coastal Plain surfaces, as indicated by the degree of soil profile development and wetness characteristics. The goal is to determine the extent to which wetlands can be considered
to be either 1) discrete features, with the surrounding landscaping providing a context, controls, or exogenous influences over wetland development| or 2) landform components which cannot be isolated from the development of the surrounding landscape.
High Arctic patchy wetlands : hydrologic variability and their sustainability
Wetlands in the polar desert environment of the High Arctic provide a special ecologic niche for the tundra plants, insects, birds, and animals. This paper examines how these wetlands adjust to short-term fluctuations in the climate, and how
Recent investigation of raised fields and canals in various wetlands of lowland Mesoamerica indicates that they were manmade and were used some time in the past to produce a variety of crops. The fields were on the margins of wetlands with repeated