نتایج جستجو برای: sediment and marine organisms

تعداد نتایج: 16860938  

Journal: :Marine environmental research 2014
K A Furby A Apprill J M Cervino J E Ossolinski K A Hughen

As sea surface temperatures rise and the global human population increases, large-scale field observations of marine organism health and water quality are increasingly necessary. We investigated the health of corals from the family Fungiidae using visual observations in relation to water quality and microbial biogeochemistry parameters along 1300 km of the Red Sea coast of Saudi Arabia. At larg...

Journal: :Journal of the Royal Society, Interface 2008
Michael N Dawson William M Hamner

The fluid mechanics of marine and terrestrial systems are surprisingly similar at many spatial and temporal scales. Not surprisingly, the dispersal of organisms that float, swim or fly is influenced by the fluid environments of air and seawater. Nonetheless, it has been argued repeatedly that the geography of evolution differs fundamentally between marine and terrestrial taxa. Might this view e...

Journal: :Marine pollution bulletin 2003
M Thiel I Hinojosa N Vásquez E Macaya

Herein we report on the abundance and composition of floating marine debris (FMD) in coastal waters of the SE-Pacific (off the Chilean coast) during the austral summer 2002. The observed FMD consisted mainly of plastic material (86.9%). Densities of FMD were highest between 20 degrees S and 40 degrees S, corresponding to the main concentrations of human population and activities. Low densities ...

Journal: :Marine pollution bulletin 2013
Laurent C-M Lebreton Jose C Borrero

A global ocean circulation model is coupled to a particle-tracking model to simulate the transport of floating debris washed into the North Pacific Ocean by the Tohoku tsunami. A release scenario for the tsunami debris is based on coastal population and measured tsunami runup. Archived 2011/2012 hindcast current data is used to model the transport of debris since the tsunami, while data from 20...

Journal: :ACS nano 2014
Ilaria Corsi Gary N Cherr Hunter S Lenihan Jerome Labille Martin Hassellov Laura Canesi Francesco Dondero Giada Frenzilli Danail Hristozov Victor Puntes Camilla Della Torre Annalisa Pinsino Giovanni Libralato Antonio Marcomini Enrico Sabbioni Valeria Matranga

The widespread use of engineered nanomaterials (ENMs) in a variety of technologies and consumer products inevitably causes their release into aquatic environments and final deposition into the oceans. In addition, a growing number of ENM products are being developed specifically for marine applications, such as antifouling coatings and environmental remediation systems, thus increasing the need...

Journal: :Ecotoxicology 2009
Ailbhe Macken Michelle Giltrap Kim Ryall Barry Foley Evin McGovern Brendan McHugh Maria Davoren

Heavy metals are ubiquitous contaminants of the marine environment and can accumulate and persist in sediments. The toxicity of metal contaminants in sediments to organisms is dependent on the bioavailability of the metals in both the water and sediment phases and the sensitivity of the organism to the metal exposure. This study investigated the effects of two metal contaminants of concern (CdC...

2012
Wei Wang Shi-Xin Wang Hua-Shi Guan

Recently, the studies on the antiviral activities of marine natural products, especially marine polysaccharides, are attracting more and more attention all over the world. Marine-derived polysaccharides and their lower molecular weight oligosaccharide derivatives have been shown to possess a variety of antiviral activities. This paper will review the recent progress in research on the antiviral...

Journal: :Biointerphases 2013
Felicia Wong Yen Myan James Walker Odette Paramor

Many studies have examined the effects of surface topography on the settlement behaviour of marine organisms and this article reviews these investigations with more emphasis on the effects of topography scale. It has been observed that macro topographies (1-100 mm) are generally favoured by marine fouling taxa and are unsuitable for antifouling applications. This is because macro topographies a...

Journal: :Biology letters 2013
Stephanie J Kamel Richard K Grosberg

Until recently, little attention has been paid to the existence of kin structure in the sea, despite the fact that many marine organisms are sessile or sedentary. This lack of attention to kin structure, and its impacts on social evolution, historically stems from the pervasive assumption that the dispersal of gametes and larvae is almost always sufficient to prevent any persistent associations...

Journal: :Biofouling 2003
L Scott Godwin

The natural barriers to species invasions that exist in isolated marine environments such as Hawaii are overcome by anthropogenic influences on the dispersal patterns of marine organisms. This creates a situation where the marine habitats of the Hawaiian Archipelago are more readily exposed to marine non-indigenous species. A case study of a particular anthropogenic dispersal mode, maritime ves...

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