نتایج جستجو برای: Coastal river

تعداد نتایج: 134674  

Journal: :Marine pollution bulletin 2014
S Rech V Macaya-Caquilpán J F Pantoja M M Rivadeneira D Jofre Madariaga M Thiel

Composition and abundance of persistent buoyant litter (plastics, polystyrene and manufactured wood) were investigated at riversides and on adjacent coastal beaches of four rivers flowing into the SE Pacific Ocean. Persistent buoyant litter made up the main share of litter at riversides (36-82%) and on coastal beaches near the river mouths (67-86%). The characteristic litter composition of each...

Journal: :تحقیقات جغرافیایی 0
احمد نوحه گر دانشگاه هرمزگان

world's coastlines are the most dynamic natural environments and diverse extraordinary and unique processes are active in this area. one of results of these processes is the formation and evolution of alluvial fans and delta. the studied areas include hormoz strait coastal, shour, jalaby and hassan-langi river delta which in the form of a strip with a varying width covers the areas from th...

2017
Wietse I. Van De Lageweg Aimée B. A. Slangen

The world’s largest deltas are densely populated, of significant economic importance and among the most valuable coastal ecosystems. Projected twenty-first century sea-level rise (SLR) poses a threat to these low-lying coastal environments with inhabitants, resources and ecology becoming increasingly vulnerable to flooding. Large spatial differences exist in the parameters shaping the world’s d...

2002
Huijie Xue

The Pearl River, with an annual mean discharge rate of ~ 10,000 ms, has profound dynamic and ecological influences on the northern shelf of the South China Sea. A coastal ocean model is set up to simulate the circulation in the Pearl River Estuary and the neighboring coastal regions. In winter the Guangdong Coastal Current, which flows southwestward and passes the mouth of the estuary, forces t...

2011
Lawrence B. Cahoon Kristin M. Hardy Dustin M. Allen

This exercise shows students how to relate remotely sensible properties of coastal waters to variations in river discharge using on‐line data resources. Students can then test hypotheses about the effects of climate changes (drought and wet periods), anthropogenic impacts (urbanized, agricultural, or undeveloped watersheds), or seasonality on river discharges and their consequences, if any, on ...

2015
Caroline S. Fortunato Byron C. Crump Connie Lovejoy

Microbial communities mediate the biogeochemical cycles that drive ecosystems, and it is important to understand how these communities are affected by changing environmental conditions, especially in complex coastal zones. As fresh and marine waters mix in estuaries and river plumes, the salinity, temperature, and nutrient gradients that are generated strongly influence bacterioplankton communi...

Journal: :Marine pollution bulletin 2003
Yves Henocque Bruno Andral

The main content of the new European Water Framework Directive is presented. Within its river basin management approach, a special mention of coastal waters status is made. Among the issues at stake are the setting up of river basin management plans, including coastal waters, and water quality assessment system leading to an harmonized definition of quality objectives and their appropriate indi...

2012
Caroline Sara Fortunato Byron C. Crump David L. Kirchman

Bacterioplankton communities are deeply diverse within and across environments, yet also display repeatable patterns over seasonal and annual time scales. I assessed patterns of bacterioplankton community variability across the Columbia River coastal margin over space and time. Coastal zones encompass a complex spectrum of environmental gradients, which impact the composition of bacterioplankto...

2014
Majid Alipour Reza Hajiesmaili Maryam Talebjannat Yousef Yahyapour

As fecal streptococci commonly inhabit the intestinal tract of humans and warm blooded animals, and daily detection of all pathogenic bacteria in coastal water is not practical, thus these bacteria are used to detect the fecal contamination of water. The present study examined the presence and the antibiotic resistance patterns of Enterococcus spp. isolated from the Babolrud River in Babol and ...

2011
Alice R. Kelley Joseph T. Kelley Daniel F. Belknap Allen M. Gontz

KELLEY, A.R.; KELLEY, J.T.; BELKNAP, D.F., and GONTZ, A.M., 2011. Coastal and terrestrial impact of the isostatically forced Late Quarternary drainage divide shift, Penobscot and Kennebec Rivers, Maine, USA. Journal of Coastal Research, 27(6), 1085–1093. West Palm Beach (Florida), ISSN 0749-0208. Marine features associated with Late Quaternary isostatic adjustment are well documented in central...

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