نتایج جستجو برای: beaches

تعداد نتایج: 2778  

Journal: :تحقیقات نظام سلامت 0
علی شهریاری کارشناس ارشد مدیریت عالی بهداشت، دانشگاه علوم پزشکی گلستان و دانشجوی دکتری بهداشت محیط،مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران کاظم ندافی دانشیار، دکتری بهداشت محیط، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. مسعود یونسیان دانشیار، دکتری اپیدمیولوژی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. رامین نبی زاده دانشیار، دکتری بهداشت محیط، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران.

background: swimming is often recommended because of its potentially beneficial effects on the joints and on people’s general sense of well-being . swimming is a great way to relax and beat the summer heat. the dumping of urban and industrial waste waters into the sea, with their high level of pathogens and other polluting agents, raises concern about its consequences for both swimmers’ health ...

Journal: :global journal of environmental science and management 2015
c. zhou x. liu z. wang t. yang l. shi

compared with usa, uk, brazil, indonesia, australia, etc., marine debris research in china has received less attention and few studies have attempted to quantify the abundance and mass of marine debris. in this paper, the abundance, composition and source of beached marine debris, and debris collection system and frequency as well as dustbins’ conditionwere investigated in duodaohai, wanpingkou...

Journal: :Anais da Academia Brasileira de Ciencias 2013
Tatiana F Maria Paulo Paiva Ann Vanreusel André M Esteves

We investigated if the differences in density and nematode communities of intertidal sediments from two Brazilian sheltered sandy beaches were related to environmental characteristics. The upper tide level (UTL) and the low tide level (LTL) of both beaches were surveyed in January (austral summer) and June 2001 (austral winter) during low-spring tides, by collecting samples of nematodes and sed...

Background and purpose: Contamination of swimming beaches in north of Iran has caused environmental problems in recent years. Mahmoudabad is exposed to these dangers due to having the longest coastline in the country.  The aim of this study was to determine microbial water quality of swimming beaches in Mahmoudabad. Materials and methods: In a descriptive-analytical study, we analyzed microbia...

Journal: :Applied and environmental microbiology 2003
Richard L Whitman Dawn A Shively Heather Pawlik Meredith B Nevers Muruleedhara N Byappanahalli

Each summer, the nuisance green alga Cladophora (mostly Cladophora glomerata) amasses along Lake Michigan beaches, creating nearshore anoxia and unsightly, malodorous mats that can attract problem animals and detract from visitor enjoyment. Traditionally, elevated counts of Escherichia coli are presumed to indicate the presence of sewage, mostly derived from nearby point sources. The relationsh...

Journal: Pollution 2020

Plastic debris is one of the major environmental concerns for the coastal area of Brunei Darussalam. It reduces the aesthetic appeals of the beaches in the country. The current study investigates marine debris on six different beaches of Brunei Darussalam along the South China Sea. Plastic was found the most abundant among whole debris by number (90.02%) and by weight (39.12%). It was classifie...

2010
Jamie MacMahan

The long-term goals are to understand surf zone processes related to rip current systems through field observations. Rip currents occur commonly on most beaches and dominate many. It is recognized that beaches with straight and parallel contours are not a stable morphologic configuration whereas more complex beaches, which support the existence of rip current morphology, are stable and more com...

2013
Kevin D Lafferty Donald A Rodriguez Angela Chapman

Southern California's beaches can support a remarkable diversity of birds along the Pacific Flyway. We asked whether seasonal, annual, and spatial factors affect bird richness and abundance on public beaches. To do so, we conducted three years of monthly bird surveys on 12 sandy beaches in Ventura California. Across all surveys, we counted 22 shorebird species, 8 gull species, 24 other water bi...

2016
Changchun Zhou

Tourism is the largest industry in the world and beaches are the major factor in this tourism market. However, in the activities of beaches’ tourism, some environmental indexes of beaches have significant effects on tourists’ experience, physical health, and even life safety. Based on the aim of providing safe and healthy services for tourists, some beach evaluation or rating systems in some Eu...

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