Results 41 to 50 of about 29,546 (216)

Benthic quality evaluation of immersion zones of sediments dredging

Revue Paralia, 2013
Dredging operations pose the problem of sediment deposits to be evacuated by taking into account economic incidences and environmental aspects related to environmental protection. Coastal sediments are high biodiversity zones, where a multitude of living organisms have a special relationship with their substrate.
Gregoire, P., Abriak, N.-E., BRAKNI, S., Achour, R.   +3 more
openaire   +4 more sources

Temporal variability of benthic macrofauna on Cassino beach, southernmost Brazil

Iheringia: Série Zoologia, 2008
The temporal variability of benthic macrofauna on Cassino beach, southernmost Brazil, was studied for a period of one year (June 2004 to May 2005) based on monthly sampling. Three sites were selected distant 50m from each other. At each site, 3 transects
Luciano P. das Neves, Pedro de S. R. da Silva, Carlos E. Bemvenuti   +2 more
doaj   +1 more source

Environmental Metal Pollution Considered as Noise: Effects on the Spatial Distribution of Benthic Foraminifera in two Coastal Marine Areas of Sicily (Southern Italy) [PDF]

Ecological Modelling, Vol. 213, 449 - 462 (2008), 2008
We analyze the spatial distributions of two groups of benthic foraminifera (Adelosina spp. + Quinqueloculina spp. and Elphidium spp.), along Sicilian coast, and their correlation with six different heavy metals, responsible for the pollution. Samples were collected inside the Gulf of Palermo, which has a high level of pollution due to heavy metals, and
arxiv   +1 more source

Effect of acidification on leaf litter decomposition in benthic and hyporheic zones of woodland streams [PDF]

Water Research, 2012
Anthropogenic acidification has deleterious effects on both structure and functioning of surface water ecosystems. This study examined how it may affect the leaf decomposition rate and the community structure and activity of decomposers in both benthic and hyporheic zones of five headwater streams along an acidification gradient from highly acidic (pH ...
Christophe Pagnout, Eric Chauvet, Eric Chauvet, François Guérold, Julien Cornut, Julien Cornut, Arnaud Elger, Arnaud Elger, Hugues Clivot   +8 more
openaire   +7 more sources

Diversity of zooplankton and benthic macroinvertebrates of estuarine coastal waters in Tien Giang province, southern Vietnam

Vietnam Journal of Science, Technology and Engineering, 2022
The Tien Giang province is located in the tropical climate zone of the Mekong delta. In this study, the diversity of zooplankton and benthic macroinvertebrates were investigated in the estuarine coastal waters of the Tien Giang province of southern ...
Thuy Lan Chi Nguyen, Thi Thu Huong Dinh, Thi Cam Tu Dang, Anh Duc Pham, Thanh Tam Nguyen, Thi Tu Quyen Huynh, Nhat Phuong Tran   +6 more
doaj   +1 more source

Profundal benthic invertebrates in an oligotrophic tropical lake: different strategies for coping with anoxia

Journal of Limnology, 2014
The deep benthic communities of tropical lakes are poorly understood with respect to their composition, abundance, biomass and regulatory factors. Whereas the hypolimnia of temperate oligotrophic lakes remain oxygenated, the higher temperatures in ...
María del Carmen Hernández, Javier Alcocer, Luis A. Oseguera, Elva Escobar   +3 more
doaj   +1 more source

Trait-based indices to assess benthic vulnerability to trawling and model potential loss of ecosystem functions [PDF]

Ecol Ind 126, July 2021, 107692, 2020
The vulnerability to trawling on a species level is determined by a species' individual combination of biological traits that is related to the ecosystem functions. Trait-based indices of physical resistance RI and reproductive potential RPI were developed and combined into an overall vulnerability index on a species level, the RRI or Resistance and ...
arxiv   +1 more source

Planktonic and benthic foraminiferal biostratigraphy of the Middle Eocene–Lower Miocene successions from the Sivas Basin (Central Anatolia, Turkey)

Geologica Carpathica, 2016
Planktonic and benthic foraminifera are described from the Middle Eocene-Lower Miocene successions in the Sivas Basin, Central Anatolia. An integrated foraminiferal zonation provides new age assignments in terms of a great number of taxa for the studied ...
Hakyemez Aynur, Özgen-Erdem Nazire, Kangal Özgen   +2 more
doaj   +1 more source

Vertical Distribution of Particulate Matter in the Clarion Clipperton Zone (German Sector)—Potential Impacts From Deep-Sea Mining Discharge in the Water Column

Frontiers in Marine Science, 2022
Most studies on the potential impacts of deep-sea mining in the Clarion Clipperton Zone (CCZ) have largely focused on benthic ecosystems but ignore the pelagic environment. To model full-scale impacts, it is important to understand how sediment discharge
Benjamin Gillard, Benjamin Gillard, Rob P. Harbour, Nicolas Nowald, Laurenz Thomsen, Morten H. Iversen, Morten H. Iversen   +6 more
doaj   +1 more source

Biostratigraphy, facies and sequence stratigraphy of the Sarvak Formation in the Ahwaz Oil Field, North Dezful Embayment Zone [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
Paleontological studies lead to recognition of 21 genera and 16 species of benthic foraminifera, 5 genera and 6 species of planktonic foraminifera and 3 genera and 3 species of oligosteginids.
Mohammad Hasan Kazemzadeh, مسعود لطف پور   +1 more
doaj