نتایج جستجو برای: coastal sedimentation

تعداد نتایج: 71869  

2015
Jorge G. Álvarez-Romero Robert L. Pressey Natalie C. Ban Jon Brodie Maura (Gee) Geraldine Chapman

Human-induced changes to river loads of nutrients and sediments pose a significant threat to marine ecosystems. Ongoing land-use change can further increase these loads, and amplify the impacts of land-based threats on vulnerable marine ecosystems. Consequently, there is a need to assess these threats and prioritise actions to mitigate their impacts. A key question regarding prioritisation is w...

Journal: :Geographia 2023

This study aims to determine restoration and revitalization efforts after the degradation of mangrove ecosystems in Paluh Merbau. The observation method is direct area. results show that ecosystem fragile sensitive change. Mangrove forest Merbau has been very severe; much vegetation fallen due being unable withstand abrasion sedimentation coastal waters continues experience area shrinkage. Rest...

2006
Caroline S. Rogers

Unprecedented development along tropical shorelines is causing severe degradation of coral reefs primarily from increases in sedimentation. Sediment particles smother reef organisms and reduce light available for photosynthesis. Excessive sedmentation can adversely affect the structure and function of the coral reef ecosystem by altering both physical and biological processes. Mean sediment rat...

Journal: :Methods in cell biology 2008
James L Cole Jeffrey W Lary Thomas P Moody Thomas M Laue

Analytical ultracentrifugation (AUC) is a versatile and powerful method for the quantitative analysis of macromolecules in solution. AUC has broad applications for the study of biomacromolecules in a wide range of solvents and over a wide range of solute concentrations. Three optical systems are available for the analytical ultracentrifuge (absorbance, interference, and fluorescence) that permi...

2011
Nicholas L. Balascio Zhaohui Zhang Raymond S. Bradley Bianca Perren Svein Olaf Dahl Jostein Bakke

a r t i c l e i n f o This study takes a comprehensive approach to characterizing the isolation sequence of Heimerdalsvatnet, a coastal lake in the Lofoten Islands, northern Norway. We use established methods and explore new techniques to assess changes in marine influence. Bathymetric and sub-bottom profiles were acquired to examine basin-wide sedimentation and a 5.8 m sediment core spanning t...

Journal: :Journal of Marine Science and Engineering 2022

In this paper, a simple approach to determine representative offshore wave characteristics for estimating the annually averaged sedimentation and erosion trends in sandy coastal areas is presented. Given climate, proposed breaks down climate into fixed 22.5-degree bins based on sediment transport potential it determines equivalent each bin, i.e., significant height, peak period, mean direction,...

Journal: :Ecosystems 2021

Abstract Intertidal ecosystems are important because of their function as coastal protection and ecological value. Sea level rise may lead to submergence salt marshes worldwide. Salt can exhibit critical transitions if the rate sea exceeds marsh sedimentation, leading a positive feedback between reduced sedimentation vegetation loss, drowning marshes. However, general framework recognize such r...

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