نتایج جستجو برای: salinity gradient

تعداد نتایج: 149647  

2016
Haley Holladay JoAnn Holloway Christopher Swarzenski Ken Krauss

The relationship between microbial communities, salinity, soil depth, and time was evaluated using phospholipid fatty acids (PLFA) collected from coastal wetlands in Louisiana post hurricanes Katrina and Rita. The three marsh types studied included freshwater and intermediate marshes from the Jean Lafitte Preserve as well as two brackish marsh sites from the Caernarvon Basin. The Caernarvon Bas...

2005
Renqing Wang Xinshan Qi Weihua Guo Baimin Song

Phragmites australis is the dominant and constructive species among plant communities in the wetlands of the downstream of Yellow River, China. Its morphological characters were high variable in different habitats. Studies on Morphological and RAPD variation of 15 P. australis populations from this region showed that soil salinity was the dominant ecological factor that affected the morphologic...

2004
FRANK J. JOCHEM MARK J. MCCARTHY WAYNE S. GARDNER

Microbial potential uptake and regeneration rates of ammonium (NH4 ) were studied along a salinity gradient (salinities 0.2–34.4) in the Mississippi River plume during an extreme drought in spring 2000. Chlorophyll concentrations up to 30 g L 1 were highest in the lowand mid-salinity regions (salinities 8.5–28.2) and comparable to records of other years but extended over smaller areas than duri...

2018
Kristin M. Yoshimura Joanna York Jennifer F. Biddle

Particulate matter in estuarine systems hosts microbial communities that can impact biogeochemical cycles. While the bacterial community composition on suspended particles has been previously investigated, especially with regards to how salinity may structure these communities, the archaeal fraction of the microbial community has not received the same attention. Here we investigate both the bac...

2007
Norman Christensen Song Qian

Questions: 1. Do pine seedlings in estuarine environments display discrete or continuous ranges of physiological tolerance to flooding and salinity? 2. What is the tolerance of Pinus taeda and P. serotina to low salinity and varying hydrologic conditions? 3. Are the assumptions for ecological equilibrium met for modeling plant community migration in response to sea-level rise? Location: Albemar...

Journal: :محیط شناسی 0
گاگیک بدلیانس قلی کندی دانشیار مهندسی محیط زیست، آب و فاضلاب، دانشگاه شهید بهشتی، پردیس فنی- مهندسی شهید عباسپور امیررضا آرشی دانشجوی کارشناسی ارشد مهندسی عمران، آب و فاضلاب، دانشگاه شهید بهشتی

introduction nowadays, energy, water and environmental issues are the intersection of all human’s requisites. supplying energy from a wide range of clean sources is a reliable response in order to obtain all of the requisites of mankind. salinity gradient power is a clean energy source that is available everywhere and has the capacity of supplying a reasonable amount of energy suitable to be us...

Journal: :Environmental Science and Pollution Research 2012

Journal: :Water 2022

Despite the extensive and rapidly growing literature on microplastics in oceans coastal seas, little information exists microplastic distribution through salinity gradient. This study is first one to evaluate gradient of a highly stratified estuary. A total 910 particles were collected from 12 different sampling events Krka River estuary, Croatia. The number detected ranged 389 surface layer 63...

2005
C. van der Zee

We have investigated the seasonal cycle of nutrients, chlorophyll a, dissolved organic nitrogen (DON), and dissolved and particulate organic carbon (DOC and POC) for 10 stations in the Belgian coastal zone. Special attention was given to phosphorus speciation, i.e. dissolved inorganic and organic phosphorus (DIP and DOP) and particulate inorganic and organic phosphorus (PIP and POP). Spatial an...

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