salt marsh journals

Rapid Deterioration of a Salt Marsh in Venice Lagoon, Italy | …

From March 1993 until June 1995, various aspects of sediment dynamics and geomorphological change were measured in an eroding salt marsh in Venice Lagoon. Marsh edge retreat and changes in interior pond size were measured in relation to permanent stakes placed in the marsh. Short term sedimentation and vertical accretion on the marsh surface were measured as the deposition of material on ...

ESA Journals: Home - Wiley Online Library - Windows of …

In this study, we investigated the WoOs for the establishment and colonization of a Scirpus mariqueter salt marsh at a large‐scale restoration site in the Yangtze Estuary. A set of field monitoring and measurements were conducted to identify the potential physical and biological thresholds that could provide a mechanistic insight on the establishment and colonization of this pioneer marsh.

A nonlinear relationship between marsh size and sediment ...

Salt marshes provide critical ecosystem services (Costanza et al., 1997).In recent years, salt marshes have been the focus of many restoration plans built on the concept of “nature-based solutions” for flood defenses that aim to use vegetated surfaces to protect coastal communities from storms (Temmerman et al., 2013).

Repetitive desiccation events weaken a salt marsh mutualism - …

Throughout such an event, salt marsh plants may experience desiccation, increased salinity and osmotic stress (Hughes et al., 2012). Furthermore, when the normally waterlogged sediments are exposed to oxygen during desiccation events, compounds such as metal‐sulphides are oxidised generating sulphuric acid, which results in a lowering of the pH upon rewetting (Palomo, Meile, & Joye, 2013 ...

Sulphide addition favours respiratory ammonification (DNRA) …

We investigated the effects of sulphide on the partitioning of NO 3 − between complete denitrification and DNRA and the microbial communities in salt marsh sediments. Complete denitrification significantly decreased with increasing sulphide, resulting in an increase in the …

A Hybrid Approach for Mapping Salt Marsh Vegetation | Taylor & …

2021. 1. 27. · The advantages of this hybrid approach include that it values the existing coastal land cover mapping efforts, keeps the classification scheme consistent, meets the goal of updating salt marsh maps for a particular coastal section, and is valid for change analysis and monitoring.

Academic Journals - African Journal of Agricultural Research - …

The temporal and spatial variation of vegetation index is a hot issue in global change research currently.Spartina alterniflora salt marsh in Jiangsu coastal areas is taken as an example in this study, MODIS data is used to research NDVI/EVI seasonal variation laws of coastal zonal vegetation. The results show that the major phenological periods of S. alterniflora, such as turning green ...

Fairy circles reveal the resilience of self-organized salt ...

Intertidal salt marshes establish starting from only a few patches on bare mudflats at very early stages. These clump-like patterns are crucial for survival because of the impact of wave action (see Fig. 5A and fig. S2A). Hence, salt marshes in our survey area display dense spotted patterns by a couple of months.

Self‐Organization and Vegetation Collapse in Salt Marsh ...

Nicoletta Leonardi, Zafer Defne, Neil K. Ganju, Sergio Fagherazzi Salt marsh erosion rates and boundary features in a shallow Bay, Journal of Geophysical Research: Earth Surface 121, no.10 10 (Oct 2016): 1861–1875.

Unravelling interactions between salt marsh ... - SAGE Journals

Salt marshes in the Wadden Sea constitute about 20% of all salt marshes along European coasts. They are of immense importance for coastal protection reasons and as habitat for coastal plant, bird, and invertebrate species. The Wadden Sea is a coastal sedimentary ecosystem in the southeastern North Sea.

Abstract - The University of Chicago Press: Journals

2020. 9. 5. · The physiological ecology of the salt-marsh pulmonate gastropod, Melampus bidentatus Say, was investigated in specimens from the Little Sippewisset saltmarsh, Cape Cod, Massachusetts.M. bidentatus is tolerant of submergence, surviving 2-3 days at 20° C and 14 days at 10° C in 25%-l00% seawater (SW). Snails acclimated at 10°C tolerated temperatures of 32.2°C-37.4°C, and snails …

Impact of reworked foraminifera from an eroding salt marsh on …

2020. 4. 8. · At Waikawa Harbour, South Island, New Zealand we show that reworked salt marsh foraminifera from the eroding bank have been mixed in significant quantities with in situ faunas: (1) in the sand flat seaward of the marsh; (2) in the spring tidal marsh on top of the 80-cm-high bank (together with mid tide foraminifera from the sand below the bank); and (3) transported laterally into a nearby non ...

Created versus natural wetlands: Avian communities in ...

On the other hand, bird use outside of the breeding season and use by an important salt marsh obligate species, the clapper rail (Rallus longirostris), did not differ. Created wetlands that we surveyed failed to completely replicate the bird and plant communities that we observed on nearby natural reference salt marshes, raising the question of ...

Distribution of Modern Salt-marsh Foraminifera from the Eastern Mississippi Sound…

We identified five live assemblages and nine biofacies for the dead assemblages from estuarine, low marsh, middle marsh, high marsh, and upland transition environments. Although dissolution of calcareous tests was observed in the dead assemblages, characteristic species and abundance patterns dependent on elevation in the intertidal zone were similar between living assemblages and dead …

Blue-green algae of a developing salt marsh | Journal of ...

It is well established, however, that blue-green algae are generally present in salt marsh regions (Chapman, 1960 a). Previous studies on the blue-green algae of British salt marshes are few, although detailed investigations have been carried out at Canvey and Ynyslas (Carter, 1932, 1933 a, b) and Scolt Head

Salt marsh monitoring along the mid-Atlantic coast by Google ...

Feb 28, 2020 · Salt marshes provide a bulwark against sea-level rise (SLR), an interface between aquatic and terrestrial habitats, important nursery grounds for many species, a buffer against extreme storm impacts, and vast blue carbon repositories. However, salt marshes are at risk of loss from a variety of stressors such as SLR, nutrient enrichment, sediment deficits, herbivory, and anthropogenic ...

Waterfowl management and diet of the salt marsh harvest mouse ...

The salt marsh harvest mouse (Reithrodontomys raviventris) is an endangered species, endemic to the marshes of the San Francisco Bay, California, USA.This species is thought to feed primarily on pickleweed (Salicornia pacifica), although its diet is poorly understood, and a large proportion of remaining habitat for salt marsh harvest mice is managed for non‐pickleweed vegetation to provide ...

Stress and strategy for salt marsh plants | Journal of ...

Jun 16, 2020 · Stress and strategy for salt marsh plants Rich Shefferson / June 16, 2020 “ Multiple trait dimensions mediate stress gradient effects on plant biomass allocation, with implications for coastal ecosystem services ” by De Battisti et al. is a new research article published in Journal of Ecology.

Net Ecosystem Carbon Balance in a North Carolina, USA, Salt Marsh

Salt marsh ecosystems rely on carbon accumulation to increase elevation and survive sea level rise. The amount of carbon accumulated in a marsh is the net result of carbon dioxide emissions to the atmosphere, fixation of carbon by photosynthesis, export of dissolved carbon to the creek, and accumulation of organic carbon in sediments deposited on the surface.

Freeze tolerance of poleward‐spreading mangrove species ...

S. alterniflora soil could impede A. germinans establishment in salt marsh communities. As climate warming gradually allows A. germinans to displace S. alterniflora, the rhizosphere could become increasingly hospitable to A. germinans. Our work suggests the soil community associated with resident species mediates climatic stressors to affect ...

TAPHONOMICALLY- AND INFAUNALLY-ADJUSTED SALT MARSH FORAMINIFERAL …

Most paleoenvironmental assessments of fossil salt-marsh foraminiferal faunas are based on modern analogue samples from the surface 1–2 cm. Usually no account is taken of the faunal modifications that result from the 60–90% of the fauna that live at greater infaunal depths or from the patchy loss of agglutinated tests that mostly occurs in the oxic and taphonomically active zone (TAZ ...

Salt marsh plants key to reducing coastal erosion and ...

The researchers used large sections of salt marsh, cut from a natural marsh in northwestern Germany. The team then rebuilt the marsh in one of the world’s largest wave tanks, located in Hannover, and subjected it to water depths and types of waves that are typical in storm surge conditions.

Sulphide addition favours respiratory ammonification (DNRA ...

We investigated the effects of sulphide on the partitioning of NO 3 − between complete denitrification and DNRA and the microbial communities in salt marsh sediments. Complete denitrification significantly decreased with increasing sulphide, resulting in an increase in the contribution of DNRA to NO 3 − respiration.

Net Ecosystem Carbon Balance in a North Carolina, USA, Salt …

Salt marsh ecosystems rely on carbon accumulation to increase elevation and survive sea level rise. The amount of carbon accumulated in a marsh is the net result of carbon dioxide emissions to the atmosphere, fixation of carbon by photosynthesis, export of dissolved carbon to the creek, and accumulation of organic carbon in sediments deposited on the surface.

Stephen M. Smith, Ph.D. - Cape Cod National Seashore (U.S ...

Hypsometry of Cape Cod Salt Marshes (Massachusetts, USA) and Predictions of Marsh Vegetation Changes in Response to Sea Level Rise. Journal of Coastal Research ; Smith, S.M., and C.W. Green. 2015. Sediment Suspension and Elevation Loss Triggered by Atlantic Mud Fiddler Crab (Uca pugnax) Bioturbation in Salt Marsh Dieback Areas of Southern New ...

Salt Marsh Plant Zonation: The Relative ... - ESA Journals: Home

In Carpinteria Salt Marsh, Salicornia virginica (pickleweed) grows at lower marsh elevations than does Arthrocnemum subterminalis (Parish's glasswort). Standing biomass of both species was greatest immediately adjacent to their abrupt border, suggesting that conditions for plant growth were best here.

Waterfowl management and diet of the salt marsh harvest ...

The salt marsh harvest mouse (Reithrodontomys raviventris) is an endangered species, endemic to the marshes of the San Francisco Bay, California, USA.This species is thought to feed primarily on pickleweed (Salicornia pacifica), although its diet is poorly understood, and a large proportion of remaining habitat for salt marsh harvest mice is managed for non‐pickleweed vegetation to provide ...

Monitoring Salt Marsh Condition with Remote Sensing - Publisher of Open Access Journals

Mapping salt-marsh halophytic vegetation species and their fractional abundance within plant associations can provide important information on marsh vulnerability and coastal management. Remote sensing has often provided valuable methods for salt-marsh vegetation mapping; however, it has seldom been used to assess the fractional abundance of halophytes.

Structure and organization of a northern New England salt marsh …

Introduction. Coastal salt marshes are a major native habitat along the entire east coast of North America (Chapman 1974) and have long been important model systems for studying community and ecosystem level processes.Salt marshes are relatively simple systems, comprised of only a few dominant species, typically found in distinctive zonation patterns across a compact gradient of tidal flooding ...

Salt Marsh Greenhouse Gas Fluxes and Microbial ... - AGU Journals

Mar 29, 2019 · How salt marsh greenhouse gas fluxes and sediment microbial communities will respond to climate‐induced precipitation changes is largely unknown. We conducted 1‐year precipitation manipulation experiments in the Spartina patens (high marsh) zone of two salt marshes and quantified ecosystem functions at both and microbial community structure ...

Leave a Comment