نتایج جستجو برای: Marine species

تعداد نتایج: 623070  

E. Koochaknejad F. Esmaily J. G. Marammazi S. Dehghan Madiseh, S. Farokhimoghadam

 Benthic invertebrates are a well-established target in environmental quality status evaluations. The AMBI (AZTI's Marine Biotic Index) was developed to determine the impacts and the quality status of soft-bottom marine benthic communities. The aim of this study was investigating multivariate pattern of benthic invertebrate community and application of AMBI (AZTI's Marine Biotic Index) for dete...

Journal: :iranian journal of biotechnology 2010
farhad farzan seyed abbasshojaosadati shojaosadati hossein abdul tehrani

several species of magnetotactic bacteria have been discovered recently. these bacteria synthesize intracellular magnetic nanoparticles in specific sizes and shapes and arrange them in chains. these particles called magnetosomes and can be used for drug-delivery, cell-targeting and hyperthermia. magnetotactic bacteria navigate along the magnetic field; this process is known as ‘magnetotaxis’ wh...

Journal: :International journal for parasitology 2016
Robert Poulin

The species richness of freshwater environments is disproportionately high compared with that of the oceans, given their respective sizes. If diversification rates are higher in freshwaters because they are isolated and heterogeneous, this should apply to parasites as well. Using 14 large datasets comprising 677 species of freshwater and marine fish, the hypothesis that freshwater parasites exp...

2005
L ETTER Fiorenza Micheli Benjamin S. Halpern

Fiorenza Micheli* and Benjamin S. Halpern Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950, USA National Center for Ecological Analysis and Synthesis, Santa Barbara, CA 93101, USA Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95060, USA *Correspondence: E-mail: [email protected] Abstract The relationship between species and funct...

2013
Marie-Hélène Truchon Lena Measures Vincent L’Hérault Jean-Claude Brêthes Peter S. Galbraith Michel Harvey Sylvie Lessard Michel Starr Nicolas Lecomte

Understanding the effects of climatic variability on marine mammals is challenging due to the complexity of ecological interactions. We used general linear models to analyze a 15-year database documenting marine mammal strandings (1994-2008; n = 1,193) and nine environmental parameters known to affect marine mammal survival, from regional (sea ice) to continental scales (North Atlantic Oscillat...

Journal: :international journal of environmental research 2009
p. chiou w. tang c.j. lin h.w. chu

speciated samples of pm2.5 were collected at the hamshire and orange sites in golden triangle of texas by us epa (environmental protection agency) from july of 2003 to august of 2005. a total of 269 samples for the hamshire site and 293 samples for the orange site with 52 species were measured; however, 22 species were excluded because of too many below-detectionlimit data. among the 22 species...

2010
Bryan P. Wallace Andrew D. DiMatteo Brendan J. Hurley Elena M. Finkbeiner Alan B. Bolten Milani Y. Chaloupka Brian J. Hutchinson F. Alberto Abreu-Grobois Diego Amorocho Karen A. Bjorndal Jerome Bourjea Brian W. Bowen Raquel Briseño Dueñas Paolo Casale B. C. Choudhury Alice Costa Peter H. Dutton Alejandro Fallabrino Alexandre Girard Marc Girondot Matthew H. Godfrey Mark Hamann Milagros López-Mendilaharsu Maria Angela Marcovaldi Jeanne A. Mortimer John A. Musick Ronel Nel Nicolas J. Pilcher Jeffrey A. Seminoff Sebastian Troëng Blair Witherington Roderic B. Mast

BACKGROUND Resolving threats to widely distributed marine megafauna requires definition of the geographic distributions of both the threats as well as the population unit(s) of interest. In turn, because individual threats can operate on varying spatial scales, their impacts can affect different segments of a population of the same species. Therefore, integration of multiple tools and technique...

2004
FIORENZA MICHELI BENJAMIN S. HALPERN LOUIS W. BOTSFORD ROBERT R. WARNER

Marine reserves are a spatial approach to marine management and conservation aimed at protecting and restoring multispecies assemblages and the structure and function of marine ecosystems. We used meta-analyses of published data to address the questions of how and over what time frames marine assemblages change within no-take marine reserves as they recover from fishing and other human uses. We...

2006
Dennis Kaw Gomez Dong Joo Lim Gun Wook Baeck Hee Jeong Youn Nam Shik Shin Hwa Young Youn Cheol Yong Hwang Jun Hong Park Se Chang Park

Betanodaviruses are the causative agents of viral nervous necrosis (VNN) in cultured marine fish. A total of 237 apparently healthy aquarium fish, marine (65 species) and freshwater (12 species) fishes and marine invertebrates (4 species), which were stocked in a commercial aquarium in Seoul, South Korea, were collected from November 2005 to February 2006. The brains of the fish and other tissu...

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