جستجوی مقالات مرتبط با کلیدواژه « marine organisms » در نشریات گروه « زیست شناسی »

In the marine environment, biofouling phenomenon is referred to as the undesired colonization of marine organisms on anthropogenic surfaces that are immersed into the seawater. To deter the unwanted biofouling, it is common to coat the immersed surfaces with a layer of antifouling paint, which will release antifouling biocide in a controlled manner to form a protective film against nearby biofoulers. The purpose of this study is to review the studies done in this field, especially in the direction of sustainable environmental protection and marine organisms. The research method included searching for articles in Google Scholar using antifouling, biocides and related keywords. The results showed that all biocides used in commercial antifouling paints detrimental the environment and non-target marine organisms. In general, by knowing the fate and pollution caused by biocides in the marine environment, appropriate measures can be taken to protect marine natural resources. It is hoped that in the near future, foul-release coatings will replace today's coatings and paints as biocide-free and environmentally safe coatings.

 Biodiversity indices and abundance of demersal resources in Hormozgan waters (53 00E to 57 00E) was studied by bottom trawl survey during winter season, 2013. Sampling was done by R/V Ferdos 1. In this study, 89 stations within the 10-20 m, 20-30 m and 30-50 m depth layers were sampled and abundance and species diversity of demersal fish communities at different depths were evaluated using various indices. In this study 99 taxa communities were identified including 88 fish species and 13 species or species groups that belonged to the other marine organisms such as crabs, sea cucumbers, sea snakes, jelly fish and corals. The value for the Shannon (H́) index for the entire investigated area (10-50 m depths) were 3.21, Simpson (D), 0.06, Pielou (J), 0.69, Margalef (R), 7.55 and Menhinick (IMen), were 0.16. The value indices in different depths of 10-20 m, 20-30 m and 30-50 m were identical. Based on the results of Shannon and Simpson indices, this area has a fair quality of population in number of species, however species richness indices indicated low species richness and due to high water temperature and salinity degree, this area is under stress.