نتایج جستجو برای: number of blooms

تعداد نتایج: 21178320  

2012
Michael J. Kennish Benjamin Fertig Gregg P. Sakowicz

Macroalgal blooms develop during the spring-summer period in the Barnegat Bay–Little Egg Harbor Estuary, a highly eutrophic coastal lagoon in New Jersey, and these blooms are detrimental to seagrass habitat in the system. Recurring blooms of drifting red and green macroalgae (e.g., Gracilaria tikvahiae and Ulva lactuca) attenuate or block light transmission to seagrass beds and also produce ext...

2016
Hanno Teeling Bernhard M Fuchs Christin M Bennke Karen Krüger Meghan Chafee Lennart Kappelmann Greta Reintjes Jost Waldmann Christian Quast Frank Oliver Glöckner Judith Lucas Antje Wichels Gunnar Gerdts Karen H Wiltshire Rudolf I Amann

A process of global importance in carbon cycling is the remineralization of algae biomass by heterotrophic bacteria, most notably during massive marine algae blooms. Such blooms can trigger secondary blooms of planktonic bacteria that consist of swift successions of distinct bacterial clades, most prominently members of the Flavobacteriia, Gammaproteobacteria and the alphaproteobacterial Roseob...

2008
WEI Qingyu JIANG Nan LU Heng HU Bin

As the algae blooms in the Taihu Lake of our country are more and more frequent and have become to be a big threat to ecosystem environment, aquatic breeding industry and human health. In this paper, by summarizing current research conditions on the algae blooms forecast, with MODIS data and ground collecting data in the Taihu Lake in China, the authors use a new concept to construct the algae ...

2014
Jinlin Jiang Xiaorong Wang Zhengjun Shan Liuyan Yang Junying Zhou Yuanqin Bu

With the rapid development of industry and agriculture and associated pollution, the cyanobacterial blooms in Lake Taihu have become a major threat to aquatic wildlife and human health. In this study, the ecotoxicological effects of cyanobacterial blooms on cage-cultured carp (Cyprinus carpio L.) in Meiliang Bay of Lake Taihu were investigated. Microcystins (MCs), major cyanobacterial toxins, h...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پزشکی 1389

introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...

Journal: :Environmental science & technology 2016
David W Schindler Stephen R Carpenter Steven C Chapra Robert E Hecky Diane M Orihel

As human populations increase and land-use intensifies, toxic and unsightly nuisance blooms of algae are becoming larger and more frequent in freshwater lakes. In most cases, the blooms are predominantly blue-green algae (Cyanobacteria), which are favored by low ratios of nitrogen to phosphorus. In the past half century, aquatic scientists have devoted much effort to understanding the causes of...

Journal: :international journal of environmental research 2013
z. svirčev j. simeunović g. subakov-simić s. krstić d. pantelić

the presence of cyanobacteria (blue-green algae) is a significant indicator of water quality,having in mind that several genera have the quality of producing cyanotoxins, which are harmful to animals,plants and humans. seven lakes in vojvodina (republic of serbia) were examined in may and september 2007 for cyanobacterial presence and cyanotoxins content, chl a concentration and index of phosph...

2012
Devin A Lyons Rebecca C Mant Fabio Bulleri Jonne Kotta Gil Rilov Tasman P Crowe

Background: Anthropogenic activities are believed to have caused an increase in the magnitude, frequency, and extent of macroalgal blooms in marine and estuarine environments. These blooms may contribute to declines in seagrasses and non-blooming macroalgal beds, increasing hypoxia, and reductions in the diversity of benthic invertebrates. However, they may also provide other marine organisms w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده شیمی 1392

چکیده در بخش اول این پروژه دو روش میکرواستخخرا به نامهای میکرواسخخرا امولسیونی با کمک اموا فراصتتتو 1 و میکرواستتتخخرا مای – مای با کمک هوا 2 ، به عنوان دو روش میکرواستتتخخرا بدون حلال پخشکننده 3 ، برای اسخخرا برخی هیتدروکربتنهای آروماتیتک حلقوی 4 از نمونتههای آبتی بهکار گرفخه و پارامخرهای موثری همچون نوع حلال اسختتتتخرا کننده، حجم حلال اسخخرا کننده، میزان نمک، زمان تابش اموا فراصتو ، تددا...

2016
Feng Zhang Yuanyuan Wang Minjie Cao Xiaoxiao Sun Zhenhong Du Renyi Liu Xinyue Ye

Algal blooms have recently become a critical global environmental concern which might put economic development and sustainability at risk. However, the accurate prediction of algal blooms remains a challenging scientific problem. In this study, a novel prediction approach for algal blooms based on deep learning is presented—a powerful tool to represent and predict highly dynamic and complex phe...

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