نتایج جستجو برای: coastal sand barriers

تعداد نتایج: 161667  

2015
D. E. Haulsee M. W. Breece D. C. Miller B. M. Wetherbee D. A. Fox M. J. Oliver

Quantifying habitat selection in marine organisms is challenging because it is difficult to obtain species location information with multiple corresponding habitat measurements. In the ocean, habitat conditions vary on many spatiotemporal scales, which have important consequences for habitat selection. While macroscale biotic and abiotic features influence seasonal movements (spatial scales of ...

Journal: :Ecology 2012
Phoebe L Zarnetske Sally D Hacker Eric W Seabloom Peter Ruggiero Jason R Killian Timothy B Maddux Daniel Cox

Vegetation at the aquatic-terrestrial interface can alter landscape features through its growth and interactions with sediment and fluids. Even similar species may impart different effects due to variation in their interactions and feedbacks with the environment. Consequently, replacement of one engineering species by another can cause significant change in the physical environment. Here we inv...

2015
S. DE VRIES M. RADERMACHER M. A. DE SCHIPPER M. J. F. STIVE

The Sand Motor is a mega-nourishment characterized by a very large sand volume of around 20 million m placed along the Dutch coast. The Sand Motor is a pilot project to evaluate the performance of an alternative nourishment strategy with respect to different functions of the coastal system. Within the scope of the coastal functions, the hook-shaped design of the initial morphology of the Sand M...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...

2014
Marcel J. F. Stive

Marcel J.F. Stive The development of coastal erosion management addressing typical traditional erosion problems towards coastal zone management addressing the evaluation of alternative solutions to guarantee a variety of coastal zone functions on their economic time scale has necessitated the formulation of large-scale coastal evolution (LSCE) models. Using the coastal evolution of the Netherla...

Journal: :Journal of the Royal Society, Interface 2015
Phoebe L Zarnetske Peter Ruggiero Eric W Seabloom Sally D Hacker

Biophysical feedbacks between vegetation and sediment are important for forming and modifying landscape features and their ecosystem services. These feedbacks are especially important where landscape features differ in their provision of ecosystem services. For example, the shape of coastal foredunes, a product of both physical and biological forces, determines their ability to protect communit...

Journal: :Proceedings of the Entomological Society of Washington 2010
Lynn A Jones Lee W Cohnstaedt Lorenza Beati Rommy Terán Renato León Leonard E Munstermann

The number of recorded phlebotomine sand fly species in Ecuador has nearly doubled during the past 20 years as a result of surveys. In 2005, a sand fly survey of two localities, Tiputini in the Amazon rain forest and Paraiso Escondido in the Pacific coastal lowland forest, resulted in the capture of 25 species. New records for Ecuador consisted of five species from the Amazonian region and one ...

Journal: :Coastal Engineering Proceedings 1972

2008
Tsung-Yi Lin Jiing-Yih Liou

Coastal dunes, as a whole, represent a natural barrier between the sea and the land, playing a vital role in the coastal defense against the waves and tides. Compared to the use of hard, man-made structures, not only is it a less expensive method to counteract the coastal erosion problems, but it is also a method that has higher ecological and scenic values in the environmental management aspec...

Journal: :Journal of the American Mosquito Control Association 2012
P J Obenauer B B Annajar H A Hanafi M S Abdel-Dayem S S El-Hossary J Villinski

ABSTRACT. Sand flies are important vectors of cutaneous leishmaniasis, especially along coastal towns of northwestern Libya where an estimated 20,000 cases have occurred from 2004 to 2009. Host-seeking traps are an important tool for sampling sand fly populations and surveying the incidence of Leishmania major and L. tropica within a given population. We evaluated the capture efficiency of CO2-...

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