This paper presents the data of 27 surface samples, collected from the Kjelst Enge saltmarsh in Ho Bugt, Jutland, to investigate the potential use of salt-marsh foraminifera as sea-level indicators in Holocene intertidal deposits. The results
confirm the usefulness of salt-marsh foraminifera as sea-level indicators in North Sea saltmarshes.
Salinity of marshes along the James Bay coast, Ontario, Canada
marshes elsewhere. The tidewater in southern James Bay has low salinity and the salt in the marsh is released by molecular diffusion from relict salt deposited with the post-glacial Tyrrell sea sediments. This study demonstrates that the salt in coastal
The salinities of tide water and sediments from the northern and the southern sectors of the coastal marshes are compared. In the north, Bay water of relatively high salinity is introduced to the marsh by tides, as is generally found in coastal
marshes may be introduced by different processes and from different sources.
In this study, the processes of marsh morphological development are analysed. In north Norfolk, highly unsteady creek flows exhibit well-developed velocity and stress transients which result from the nature of tidal priom and the interaction
The study area is the Skallingen saltmarsh in Jutland. The AA. specifically aim to identify the domain of scale over which vegetation pattern and process are detected on a saltmarsh. Such identification will be achieved by 1) examining the species
of emerging novel theory that emphasizes scale-dependent complexity in saltmarsh ecosystems.
Trends of soil organic matter turnover in the saltmarsh of the Yangtze River estuary
China ; Estuary ; Geochemistry ; Grain size distribution ; Humid environment ; Isotope analysis ; Organic materials ; Saltmarsh
Characteristics and tidal flat trends of soil organic matter (SOM) turnover were studied for the Chrongmingdongtan SaltMarsh in the Yangtze River estuary, based on analyses C 13, grain sizes and contents of particulate organic carbon, total
nitrogen and inorganic carbon for 3 cores excavated from high tidal flat, middle tidal flat and bare flat. The muddy tidal flat processes exerted direct influences on sequestration and turnover of SOM in the saltmarsh, and had great constraints
on the spatial and temporal characteristics of SOM turnover of the Chrongmingdongtan SaltMarsh in the Yangtze River estuary.
Saltmarshes reduces oxidised nitrogenous compounds to ammonium and particulate nitrogen and export these reduced forms to coastal waters. The internal demands exceed the net imputs of nitrogen by rain, groundwater flow and fixation, suggesting very
active uptake conversion, release and recycling of nitrogen within a marsh ecosystem. Nitrogen losses are mainly through tidal exchanges and denitrification, and these two outputs balance the gains. The chemical exchanges among uplands, marshes
The main objective of this thesis is to enhance the understanding of saltmarsh development along the mainland coast of the Dutch Wadden Sea at different spatial and temporal scales by the use of field data. The study area is located in the eastern
Environmental controls on multiscale spatial patterns of saltmarsh vegetation
Coastal environment ; Denmark ; Jylland ; Salinity ; Saltmarsh ; Spatial distribution ; Tidal creek ; Topography ; Vegetation
The AA. investigate the topography-vegetation relationship in a Danish saltmarsh, focusing upon 2 scales : a macro-scale (ca. 500 m) across the marsh platform, encompasing seaward and landward areas, and a meso-scale (ca. 25 m) across tidal creeks
. While long-term sea-level variation and grazing influenced the macro-scale pattern, short-term fluvial-geomorphic processes drove the meso-scale pattern. The results suggest that, in saltmarshes, elevation plays a still more important ecological role
The impact of sea-level rise on coastal saltmarshes
The response of coastal marshes to relative sea-level rise depends upon their ability to maintain their relative elevation through sedimentation. The marshes themselves represent a balance between contemporary depositional and erosional forces
. Despite increased international efforts to clarify the response of sea level to future climatic change, predictions of the effect on coastal marshes still requires further understanding of local subsidence, sediment supply and vegetation factors.
Processes governing marsh formation in a rapidly subsiding coastal environment
An accretionary budget is developed for Barataria Basin fresh, brackish-intermediate and saltmarshes located along a salinity gradient extending inland from the coast. The mineral sediment and organic carbon requirement of individual marsh units
in response to water level increase is presented. The life span of saltmarshes of the Mississippi River deltaic plain are estimated to be approximately 100 years.
Evolution of salt-marsh cliffs in muddy and sandy systems : a qualitative comparison of british west-coast estuaries
Salt-marsh cliffs in the muddy Severn Estuary are mostly strong and tall. They are retreating in response to the erosive attack of wave and tidal currents chiefly through toppling failures and rotational slips. In the sandy Solway Firth
and Morecambe Bay systems, marsh cliffs are strong only in their upper parts, where a dense root-mat of marsh grasses binds the sediments. Here cantilever and toppling failures are the main response of the cliffs to tidal and wave erosion. The differences
between the three estuarine systems in the mechanisms of marsh-cliff erosion are partly reflected in the mode of preservation of the cliffs on the restoration of the conditions leading to renewal of marsh growth.
Hydrochemical characteristics of saltmarsh wetlands in western Songnen Plain
Beijing ; China ; Correlation ; Discriminant analysis ; Humid environment ; Hydrochemistry ; Principal components analysis ; Saltmarsh
In western Songnen Plain of China, the saline-alkaline degree of water bodies is high in saltmarsh wetlands. Hydrochemical characteristics of limnic wetlands have intimate relationship with its causes of formation and element character
discriminant for the analysis of saltmarsh water bodies. And the goal is to develop and utilize the water resources in this region reasonably by means of controlling and preventing regional salinization.
Sulphate reduction as a geomorphological agent in tidal marshes (Great Marshes at Barnstable, Cape Cod, USA)
Brackish environment ; Coastal environment ; Environmental degradation ; Hydrochemistry ; Intertidal zone ; Massachusetts ; Model ; Salinity ; Tidal marsh ; United States of America ; Vegetation ; Water temperature
Many tidal marsh surfaces feature water-filled depressions, known as salt pans (shallow) or ponds (deeper). In the Great Marshes at Barnstable, Cape Cod, pond formation is an active process. The AA. hypothesize that degradation of organic matter
by sulphate-reducing bacteria in these peat-rich marsh deposits is the primary cause of pan and pond formation. Computer simulation suggests that ponds with similar characteristics to those in the Barnstable marshes may develop by sulphate reduction.
Comparative study ; Digital elevation model ; Global Positioning System ; Island ; LiDAR ; Remote sensing ; Saltmarsh ; South Carolina ; Topography ; United States of America
Digital elevation models (DEMs) were compared to characterize how well airborne lidar (light detection and ranging) data depict the microtopography of a saltmarsh. 72,000 GPS points and 700,000 lidar points from a 1 km2 saltmarsh island were
to be a robust tool for mapping intertidal landscapes. However, lidar DEMs may not adequately resolve the microtopographic variations of a saltmarsh, and for research questions that require accurate depiction of small-scale tidal creek networks and subtle
linearly interpolated using identical DEM configurations. Spatial arrangement of difference values reveal that lidar performed best on the marsh platform, and poorly along tidal creeks and creek heads. These observations indicate that lidar appears
Soils of a dune coastal saltmarsh system in relation to groundwater level, micro-topography and vegetation under a semiarid Mediterranean climate in SE Spain
Twenty-one soil profiles were described, analysed and classified in a saltmarsh dune system in SE Spain. The aims of this work were to establish the edaphic characteristics of a coastal dune system in SE Spain in relation to its groundwater level
Sedimentation rates in the Wanggang saltmarshes, Jiangsu
China ; Coastal environment ; Grain size distribution ; Humid environment ; Isotope dating ; Jiangsu ; Saltmarsh ; Sediment budget ; Vegetation
and Spartina alterniflora, were introduced successively into the Jiangsu coastal areas, in order to protect the coastline from erosion and to increase the accumulation rate. Pb-210 and Cs-137 analyses were carried out for sediment samples from the salt-marshes