نتایج جستجو برای: coastal sedimentation

تعداد نتایج: 71869  

2014
Thomas J. Goreau

Increasing stress from global warming, sea level rise, acidification, sedimentation, pollution, and unsustainable practices have degraded the most critical coastal ecosystems including coral reefs, oyster reefs, and salt marshes. Conventional restoration methods work only under perfect conditions, but fail nearly completely when the water becomes too hot or water quality deteriorates. New metho...

Journal: :The Korean journal of parasitology 2006
Jae-Hwan Park Hyo-Jin Kim Sang-Mee Guk Eun-Hee Shin Jae-Lip Kim Han-Jong Rim Soon-Hyung Lee Jong-Yil Chai

In order to determine the distribution and prevalence of human cryptosporidiosis on western and southern coastal islands of Jeollanam-do (Province), fecal samples were collected from 2,541 people residing on 25 islands, 13 in the western coasts and 12 in the southern coasts, during July and August 2000. Fecal smears were prepared following formalin-ether sedimentation of the samples and stained...

2000
HERMAN S. J. CESAR

Coral reef ecosystems provide many functions, services and goods to coastal populations, especially in the developing world. A variety of anthropogenic practices threatens reef health and therefore jeopardises the benefits flowing from these services and goods. These threats range from local pollution, sedimentation, destructive fishing practices and coral mining to global issues like coral ble...

Journal: :Marine pollution bulletin 2013
A Goutte M Chevreuil F Alliot O Chastel Y Cherel M Eléaume G Massé

The concentrations of polychlorinated biphenyls (PCB), hexachlorobenzene (HCB), pentachlorobenzene (PeCB) and polybrominated diphenylethers (PBDE) were described in benthic and pelagic species collected off Adélie Land, Antarctica. Strong differences were observed among species, with reduced PeCB and HCB levels in benthic species, and elevated PCB levels in the Antarctic yellowbelly rockcod, th...

Journal: :Journal of Marine Science and Engineering 2021

The optically stimulated luminescence (OSL) dating method promises to provide reliable ages for various Quaternary archives. Coastal sedimentation in the Bohai Sea (northeastern China) since Middle Pleistocene has been influenced by paleoenvironmental and sea-level change, of which restricted using OSL approach multiple investigations. In this study, establish a robust chronological framework c...

Journal: :Geosciences 2021

Evidence of volcaniclastic sedimentation occurs in the first depositional sequence sedimentary succession Amantea Basin. Volcaniclastic deposits are intercalated upper part a sandstone formation and these show maximum thickness about 8 m. The Basin is Neogene depozone located along Tyrrhenian margin Calabria whose onset started during Upper Serravallian. source volcano to materials had have bee...

Journal: :Jurnal geografi 2022

This research uses a formula approach. In has several variables. The variables in this are tidal, ocean current speed and direction, wave height period, type of geological structure the coast sediment grain size materials, slope beach coastline wind direction. number samples or observation points at 27, with interval distance every point is 200 m. results were analyzed waves determinants abrasi...

2004
Richard A. Luettich Rachel T. Noble Edward D. Houde William C. Boicourt Michael R. Roman

s of talks given at National Meetings Morris, J.T., G. Herrick, and J. Herr. 2002. Nutritional status and spectral reflectance of Spartina alterniflora. Abstract of talk given at the annual meeting of the American Society of Limnology and Oceanography, June 10-15, Victoria, B.C. Marshall, H.L. and J. Morris. 2003. Xanthophyll pigments and their application to remote sensing of environmental qua...

2006
Peter Wheeler

Since 1889, an artificial entrance channel, cut through the swash aligned Holocene sandy outer barrier system known as the Ninety Mile Beach, has provided shipping access between the Gippsland Lakes and Bass Strait. From digital spatial data analysis using GIS-built versions of the hydrographic chart archive (spanning the years 1889-2005) accumulated by port authorities, both visual and net vol...

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