نتایج جستجو برای: macrobenthos community

تعداد نتایج: 364617  

2013
S. Kersey Sturdivant Rochelle D. Seitz Robert J. Diaz

Since colonial times, anthropogenic effects have eroded Chesapeake Bay’s health, resulting in an increase in the extent and severity of hypoxia (≤2 mg O2 l−1), adversely affecting community structure and secondary production of macrobenthos in the Bay and its tributaries. The influence of hypoxia on macrobenthic communities is well documented, but less well known is the regulatory effect of hyp...

Journal: :Frontiers in Ecology and Evolution 2022

Macrobenthos taxonomic and functional diversity are key indicators of ecosystem health. River–lake ecotones macrobenthos habitats. However, we don’t fully understand biodiversity patterns in these ecotones. We studied water environment, sediment heavy metal contents, community, which sampled simultaneously from 29 sampling sites along the Fu River–Baiyangdian Lake gradient Northern China with f...

ژورنال: بوم شناسی آبزیان 2019

Macrobenthos are benthic animals that live in or on the bottom sediments which used as a bioindicators to assess the presence of contaminants, in natural aquatic systems. This study aimed to achieve the relationship between sediment composition and macrobenthic communities, distribution. Sampling was done monthly in 2011-12 by a powerboat, and VanVeen grab with 0.04 cross section, were used for...

2006
T. Vanagt E. Beekman M. Vincx S. Degraer

The influence of the ENSO cycle on marine fauna and flora has only recently been given the attention it deserves. The very strong 1997–1998 El Niño and its obvious effects on marine biota was a key point in ENSO research, but unfortunately few quantitative data about the 1997–1998 El Niño itself are available. To gather information about the effect of ENSO on the macrobenthos, we performed a bi...

ژورنال: اقیانوس شناسی 2023

Background and Objectives: Chemical storage of water cannot provide complete information about the extent of bioavailability of metals in the environment, while the study of this storage in the chain of water, sediment and macrobenthos can make the rate of rotation and storage risk more visible in ecosystems. Hur Al-Azim wetland is located in the west of Khuzestan Province. Large parts of it ha...

ژورنال: بوم شناسی آبزیان 2013
Bahremand, Morteza , Kamrani , Ehsan , Keshavarz , Musa , Soleimanirad , Asieh , Vazirizade, Amir ,

Gulf of Oman, in the summer, is influenced by the southwest monsoon winds of India, and Jask protected area, which is ecologically and economically very important, is located in the northwestern area of this gulf. In this study, sampling of sediments was done from 2009 to 2010, in three station (mouth, mid and end) of Markazi creek (located in Jask city), by 0.04 m2 Van Veen Grab. Water physico...

Journal: :Journal of Marine Science and Engineering 2023

The Ulleung Basin of the East Sea is a biological hotspot, but studies on macrobenthos therein are lacking. To evaluate species diversity and community structure in Basin, we conducted survey from 2017 to 2021. A total 262 was detected by survey, average habitat density 243 individuals/m2. biomass 43.7 g/m2, Shannon Wiener’s index 2.3 (0.69–3.61). dominant were polychaetes Terebellides horikosh...

Journal: :Estuarine Coastal and Shelf Science 2021

Fjords play an important role in carbon cycling and sequestration, but the burial of organic matter sediments strongly depends on composition macrobenthic communities. We studied three deep, sub-Arctic fjords located northern Norway to assess community differentiation neighbouring underlying environmental drivers. The have relatively deep depositional basins (370–570 m), they differ sill depth ...

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