Salt Marsh Sediments

Salt marsh sediments are mixtures of mineral particles and organic matter that accumulate in the waterlogged, intertidal soils of coastal wetlands, where they support marsh structure and ecological function. Incoming tides deliver suspended sediment, while settling, plant stems, and dense root networks slow water movement, promote particle deposition, and stabilize the surface; oxygen-limited conditions also influence decomposition and nutrient cycling. Studying these sediments helps researchers assess shoreline stability, elevation change, carbon storage, and the fate of pollutants and nutrients. Their properties therefore inform coastal restoration, climate research, habitat management, and predictions of how marshes respond to sea-level rise and storms.

Salt Marsh Sediments - Related Videos

Education

JoVE Science Education - Advanced Biology

Creating a Winogradsky Column: A Method to Enrich the Microbial Species in a Sediment Sample

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2023

Source: Elizabeth Suter1, Christopher Corbo1, Jonathan Blaize1 1 Department of Biological Sciences, Wagner College, 1 Campus Road, Staten Island NY, 10301 The Winogradsky column is a miniature, enclosed ecosystem used for enriching sediment microbial communities, especially those involved in sulfur cycling. The column was first used by Sergei Winogradsky in the 1880s and has since been applied in the study of many diverse microorganisms involved in biogeochemistry, such as photosynthesizers,...

Determining the pH of Salt Solutions

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2020

The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7. For...

Responses to Salt Stress

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2020

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients. Plant cell cytoplasm has a high solute concentration, which causes water to flow from the soil into the plant due to osmosis. However, excess salt in the surrounding soil increases the soil solute concentration, reducing the plant’s ability to take up water. High levels of...

Research

JoVE Journal - Biology

Actin Co-Sedimentation Assay; for the Analysis of Protein Binding to F-Actin

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Cited by 18 •

2008

Proteins bind to filamentous actin (F-actin) through distinct actin binding modules. In this video we demonstrate the procedure of actin co-sedimentation, which is an in vitro assay routinely used to analyze proteins or specific domains that bind F-actin.

Soxhlet Extraction of Lipid Biomarkers from Sediment

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2023

Source: Laboratory of Jeff Salacup - University of Massachusetts Amherst Every lab needs standards that track the performance, accuracy, and precision of its instruments over time to ensure a measurement made today is the same as a measurement made a year from now (Figure 1). Because standards must test the performance of instruments over a long period of time, large volumes of the standards are often required. Many chemical standards can be purchased from retail scientific companies, like...

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