Methane Release from a Brackish Intertidal Salt-Marsh Embayment of Chesapeake Bay, Maryland

Estuaries ◽  
1981 ◽  
Vol 4 (2) ◽  
pp. 143 ◽  
Author(s):  
Fredric Lipschultz
Keyword(s):  
Salt Marsh ◽  
Chesapeake Bay ◽  
Methane Release

scholarly journals Quantifying Slopes as a Driver of Forest to Marsh Conversion Using Geospatial Techniques: Application to Chesapeake Bay Coastal-Plain, United States

2021 ◽  
Vol 9 ◽  
Author(s):  
Grace D. Molino ◽  
Zafer Defne ◽  
Alfredo L. Aretxabaleta ◽  
Neil K. Ganju ◽  
Joel A. Carr
Keyword(s):  
United States ◽  
Salt Marsh ◽  
Chesapeake Bay ◽  
Sea Level ◽  
Coastal Plain ◽  
Forest Conversion ◽  
Analysis Tool ◽  
Coastal Forest ◽  
Elevation Data ◽  
Forest Boundary

Coastal salt marshes, which provide valuable ecosystem services such as flood mitigation and carbon sequestration, are threatened by rising sea level. In response, these ecosystems migrate landward, converting available upland into salt marsh. In the coastal-plain surrounding Chesapeake Bay, United States, conversion of coastal forest to salt marsh is well-documented and may offset salt marsh loss due to sea level rise, sediment deficits, and wave erosion. Land slope at the marsh-forest boundary is an important factor determining migration likelihood, however, the standard method of using field measurements to assess slope across the marsh-forest boundary is impractical on the scale of an estuary. Therefore, we developed a general slope quantification method that uses high resolution elevation data and a repurposed shoreline analysis tool to determine slope along the marsh-forest boundary for the entire Chesapeake Bay coastal-plain and find that less than 3% of transects have a slope value less than 1%; these low slope environments offer more favorable conditions for forest to marsh conversion. Then, we combine the bay-wide slope and elevation data with inundation modeling from Hurricane Isabel to determine likelihood of coastal forest conversion to salt marsh. This method can be applied to local and estuary-scale research to support management decisions regarding which upland forested areas are more critical to preserve as available space for marsh migration.

Methylmercury production in a Chesapeake Bay salt marsh

2008 ◽  
Vol 113 (G2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Carl P. J. Mitchell ◽  
Cynthia C. Gilmour
Keyword(s):  
Salt Marsh ◽  
Chesapeake Bay ◽  
Methylmercury Production

Tidal exchange of total mercury and methylmercury between a salt marsh and a Chesapeake Bay sub-estuary

2012 ◽  
Vol 111 (1-3) ◽  
pp. 583-600 ◽  
Author(s):  
Carl P. J. Mitchell ◽  
Thomas E. Jordan ◽  
Andrew Heyes ◽  
Cynthia C. Gilmour
Keyword(s):  
Salt Marsh ◽  
Chesapeake Bay ◽  
Total Mercury ◽  
Tidal Exchange

Methane release from soils of a Georgia salt marsh

1978 ◽  
Vol 42 (4) ◽  
pp. 343-348 ◽  
Author(s):  
Gary M. King ◽  
W.J. Wiebe
Keyword(s):  
Salt Marsh ◽  
Methane Release

scholarly journals High-Resolution Monitoring of Tidal Systems Using UAV: A Case Study on Poplar Island, MD (USA)

2021 ◽  
Vol 13 (7) ◽  
pp. 1364
Author(s):  
Yuri Taddia ◽  
Alberto Pellegrinelli ◽  
Corinne Corbau ◽  
Giulia Franchi ◽  
Lorie W. Staver ◽  
...  
Keyword(s):  
Salt Marsh ◽  
High Resolution ◽  
Chesapeake Bay ◽  
Methodological Approach ◽  
Tidal Energy ◽  
Time Frame ◽  
Channel Networks ◽  
Ground Sample ◽  
Restoration Strategies ◽  
Geomorphological Evolution

Tidal processes regulating sediment accretion rates and vegetated platform erosion in tidal systems strongly affect salt marsh evolution. A balance between erosion and deposition in a restored salt marsh is crucial for analyzing restoration strategies to be adopted within a natural context. Marsh morphology is also coupled with tidal mudflats and channel networks and this makes micro-tidal systems crucial for a detailed assessment of restoration interventions. Here, we present a methodological approach for monitoring channel morphodynamics and vegetation variations over a time frame of six years in a low tidal energy salt marsh of the Paul S. Sarbanes Ecosystem Restoration Project at Poplar Island (Maryland, USA). The project is a restoration site where sediment dredged from the shipping channels in the upper Chesapeake Bay is used to restore a tidal marsh habitat in mid-Chesapeake Bay. Aerial surveys with an Unmanned Aerial Vehicle (UAV) have been performed for the high-resolution mapping of a small tidal system. Flight missions were planned to obtain a Ground Sample Distance (GSD) of 2 cm. Structure-from-Motion (SfM) and Multi-View-Stereo (MVS) algorithms have been used to reconstruct the 3D geometry of the site. The mapping of channel morphology and an elevation assessment on the mudflat were performed using orthomosaics, Digital Terrain Models (DTMs) and GNSS survey. The results highlight that the workflow adopted in this pilot work is suitable to assess the geomorphological evolution over time in a micro-tidal system. However, issues were encountered for salt marsh due to the presence of dense vegetation. The UAV-based photogrammetry approach with GNSS RTK ground surveys can hence be replicated in similar sites all over the world to evaluate restoration interventions and to develop new strategies for a better management of existing shorelines.

Density, abundance and survival of the blue crab in seagrass and unstructured salt marsh nurseries of Chesapeake Bay

2005 ◽  
Vol 319 (1-2) ◽  
pp. 69-80 ◽  
Author(s):  
Romuald N. Lipcius ◽  
Rochelle D. Seitz ◽  
Michael S. Seebo ◽  
Duamed Colón-Carrión
Keyword(s):  
Salt Marsh ◽  
Chesapeake Bay ◽  
Blue Crab

Between ‘Savage Man’ and ‘Most Faithful Englishman’ Manteo and the Early Anglo-Indian Exchange, 1584–1590

Itinerario ◽  
2000 ◽  
Vol 24 (2) ◽  
pp. 146-169 ◽  
Author(s):  
Michael Leroy Oberg
Keyword(s):  
North Carolina ◽  
Chesapeake Bay ◽  
One Year ◽  
Anglo Indian

In August of 1587 Manteo, an Indian from Croatoan Island, joined a group of English settlers in an attack on the native village of Dasemunkepeuc, located on the coast of present-day North Carolina. These colonists, amongst whom Manteo lived, had landed on Roanoke Island less than a month before, dumped there by a pilot more interested in hunting Spanish prize ships than in carrying colonists to their intended place of settlement along the Chesapeake Bay. The colonists had hoped to re-establish peaceful relations with area natives, and for that reason they relied upon Manteo to act as an interpreter, broker, and intercultural diplomat. The legacy of Anglo-Indian bitterness remaining from Ralph Lane's military settlement, however, which had hastily abandoned the island one year before, was too great for Manteo to overcome. The settlers found themselves that summer in the midst of hostile Indians.

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