scholarly journals Salt Marsh Primary Production and Its Responses to Relative Sea Level and Nutrients in Estuaries at Plum Island, Massachusetts, and North Inlet, South Carolina, USA

Oceanography ◽  
2013 ◽  
Vol 26 (3) ◽  
pp. 78-84 ◽  
Author(s):  
James Morris ◽  
Karen Sundberg ◽  
Charles Hopkinson
Keyword(s):  
South Carolina ◽  
Salt Marsh ◽  
Primary Production ◽  
Sea Level ◽  
North Inlet ◽  
Relative Sea Level

Historical rates of salt marsh accretion on the outer Bay of Fundy

2001 ◽  
Vol 38 (7) ◽  
pp. 1081-1092 ◽  
Author(s):  
Gail L Chmura ◽  
Laurie L Helmer ◽  
C Beth Beecher ◽  
Elsie M Sunderland
Keyword(s):  
Salt Marsh ◽  
Sea Level ◽  
Sea Level Change ◽  
Bay Of Fundy ◽  
Relative Sea Level ◽  
Early 19Th Century ◽  
Level Change ◽  
Pollen Stratigraphy ◽  
Accretion Rates ◽  
Marsh Accretion

We examine rates of salt marsh accumulation in three marshes of the outer Bay of Fundy. At each marsh we selected a site in the high marsh with similar vegetation, and thus similar elevation. Accretion rates were estimated by 137Cs, 210Pb, and pollen stratigraphy to estimate rates of change over periods of 30, 100, and ~170 years, respectively. These rates are compared with records from the two closest tide gauges (Saint John, New Brunswick, and Eastport, Maine) to assess the balance of recent marsh accretion and sea-level change. Averaged marsh accretion rates have ranged from 1.3 ± 0.4 to 4.4 ± 1.6 mm·year–1 over the last two centuries. Recent rates are similar to the rate of sea-level change recorded at Eastport, Maine, suggesting that they are in step with recent sea-level change but very sensitive to short-term variation in relative sea level. Based on the pollen stratigraphy in the marsh sediments, the marsh accretion rate was higher during the late 18th to early 19th century. Higher rates probably were due to local increases in relative sea level as a result of neotectonic activity and may have been enhanced by increased sediment deposition through ice rafting.

Late Holocene sea-level changes and isostasy in western Denmark

2006 ◽  
Vol 66 (2) ◽  
pp. 288-302 ◽  
Author(s):  
W. Roland Gehrels ◽  
Katie Szkornik ◽  
Jesper Bartholdy ◽  
Jason R. Kirby ◽  
Sarah L. Bradley ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Sea Level ◽  
Salt Marshes ◽  
Late Holocene ◽  
Glacial Isostatic Adjustment ◽  
Sea Level Changes ◽  
Relative Sea Level ◽  
Isostatic Adjustment ◽  
Tidal Embayment ◽  
Made In

AbstractCores and exposed cliff sections in salt marshes around Ho Bugt, a tidal embayment in the northernmost part of the Danish Wadden Sea, were subjected to 14C dating and litho- and biostratigraphical analyses to reconstruct paleoenvironmental changes and to establish a late Holocene relative sea-level history. Four stages in the late Holocene development of Ho Bugt can be identified: (1) groundwater-table rise and growth of basal peat (from at least 2300 BC to AD 0); (2) salt-marsh formation (0 to AD 250); (3) a freshening phase (AD 250 to AD 1600?), culminating in the drying out of the marshes and producing a distinct black horizon followed by an aeolian phase with sand deposition; and (4) renewed salt-marsh deposition (AD 1600? to present). From 16 calibrated AMS radiocarbon ages on fossil plant fragments and 4 calibrated conventional radiocarbon ages on peat, we reconstructed a local relative sea-level history that shows a steady sea-level rise of 4 m since 4000 cal yr BP. Contrary to suggestions made in the literature, the relative sea-level record of Ho Bugt does not contain a late Holocene highstand. Relative sea-level changes at Ho Bugt are controlled by glacio-isostatic subsidence and can be duplicated by a glacial isostatic adjustment model in which no water is added to the world's oceans after ca. 5000 cal yr BP.

scholarly journals Exploring mechanisms of compaction in salt-marsh sediments using Common Era relative sea-level reconstructions

2017 ◽  
Vol 167 ◽  
pp. 96-111 ◽  
Author(s):  
Matthew J. Brain ◽  
Andrew C. Kemp ◽  
Andrea D. Hawkes ◽  
Simon E. Engelhart ◽  
Christopher H. Vane ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Sea Level ◽  
Relative Sea Level ◽  
Marsh Sediments ◽  
Salt Marsh Sediments ◽  
Common Era

scholarly journals Contrasting Patterns of Phytoplankton Community Pigment Composition in Two Salt Marsh Estuaries in Southeastern United States

2003 ◽  
Vol 69 (7) ◽  
pp. 4129-4143 ◽  
Author(s):  
Peter A. Noble ◽  
Raphael G. Tymowski ◽  
Madilyn Fletcher ◽  
James T. Morris ◽  
Alan J. Lewitus
Keyword(s):  
South Carolina ◽  
Salt Marsh ◽  
Phytoplankton Community ◽  
Nutrient Loading ◽  
Phytoplankton Bloom ◽  
Diversity Index ◽  
Principal Component ◽  
Tidal Mixing ◽  
North Inlet ◽  
Pigment Composition

ABSTRACT Phytoplankton community pigment composition and water quality were measured seasonally along salinity gradients in two minimally urbanized salt marsh estuaries in South Carolina in order to examine their spatial and temporal distributions. The North Inlet estuary has a relatively small watershed with minimal fresh water input, while the Ashepoo, Combahee, and Edisto (ACE) Basin is characterized by a relatively greater influence of riverine drainage. Sampling stations were located in regions of the estuaries experiencing frequent diurnal tidal mixing and had similar salinity and temperature regimens. Phytoplankton community pigment composition was assessed by using high-performance liquid chromatography (HPLC) and multivariate statistical analyses. Shannon diversity index, principal-component, and cluster analyses revealed that phytoplankton community pigments in both estuaries were seasonally variable, with similar diversities but different compositions. The temporal pigment patterns indicated that there was a relatively weak correlation between the pigments in ACE Basin and the relative persistence of photopigment groups in North Inlet. The differences were presumably a consequence of the unpredictability and relatively greater influence of river discharge in the ACE Basin, in contrast to the greater environmental predictability of the more tidally influenced North Inlet. Furthermore, the timing, magnitude, and pigment composition of the annual phytoplankton bloom were different in the two estuaries. The bloom properties in North Inlet reflected the predominance of autochthonous ecological control (e.g., regenerated nutrients, grazing), and those in ACE Basin suggested that there was greater influence of allochthonous environmental factors (e.g., nutrient loading, changes in turbidity). These interestuarine differences in phytoplankton community structure and control provide insight into the organization of phytoplankton in estuaries.

scholarly journals Salt-marsh reconstructions of relative sea-level change in the North Atlantic during the last 2000 years

2014 ◽  
Vol 99 ◽  
pp. 1-16 ◽  
Author(s):  
Natasha L.M. Barlow ◽  
Antony J. Long ◽  
Margot H. Saher ◽  
W. Roland Gehrels ◽  
Mark H. Garnett ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Sea Level ◽  
North Atlantic ◽  
Sea Level Change ◽  
Relative Sea Level ◽  
Level Change ◽  
The North ◽  
The North Atlantic

The bly creek ecosystem study: Phosphorus transport within a euhaline salt marsh basin, North Inlet, South Carolina

1990 ◽  
Vol 27 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Richard F. Dame ◽  
Thomas G. Wolaver ◽  
Thomas M. Williams ◽  
John D. Spurrier ◽  
Anne B. Miller
Keyword(s):  
South Carolina ◽  
Salt Marsh ◽  
North Inlet ◽  
Phosphorus Transport

scholarly journals Application of stable carbon isotopes for reconstructing salt-marsh floral zones and relative sea level, New Jersey, USA

2011 ◽  
Vol 27 (4) ◽  
pp. 404-414 ◽  
Author(s):  
Andrew C. Kemp ◽  
Christopher H. Vane ◽  
Benjamin P. Horton ◽  
Simon E. Engelhart ◽  
Daria Nikitina
Keyword(s):  
New Jersey ◽  
Salt Marsh ◽  
Sea Level ◽  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Stable Carbon ◽  
Relative Sea Level
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