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Xigang Xing, Ling Liu, Wenming Yan, Tingfeng Wu, Liping Zhao and Xixi Wang
The purpose of this work was to reveal the Chironomid larvae bioturbation impact on N release and to find the mechanism of bioturbation to N conversion at the SWI (sediment?water interface). Sampling at four points during a 35-day incubation experiment w...
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Xigang Xing, Ling Liu, Wenming Yan, Tingfeng Wu, Liping Zhao and Xixi Wang
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Alexey A. Maximov and Nadezhda A. Berezina
The development of sensitive indicators reflecting the state of the environment is an important issue for the monitoring of marine ecosystems. The spionid polychaete Marenzelleria arctia and pontoporeiid amphipod Monoporeia affinis are common macrobenthi...
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Bastien Lamarque, Bruno Deflandre, Adriana Galindo Dalto, Sabine Schmidt, Alicia Romero-Ramirez, Frédéric Garabetian, Nicolas Dubosq, Mélanie Diaz, Florent Grasso, Aldo Sottolichio, Guillaume Bernard, Hervé Gillet, Marie-Ange Cordier, Dominique Poirier, Pascal Lebleu, Hervé Derriennic, Martin Danilo, Márcio Murilo Barboza Tenório and Antoine Grémare
The spatial distributions of (1) surface sediment characteristics (D0.5, Sediment Surface Area (SSA), Particulate Organic Carbon (POC), Chlorophyll-a (Chl-a), Phaeophytin-a (Phaeo-a), Total and Enzymatically Hydrolyzable Amino Acids (THAA, EHAA), d13C) a...
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Paulo Yukio G. Sumida, Arthur Z. Güth, Cintia Organo Quintana and Ana M. S. Pires-Vanin
Burrowers such as thalassinideans remobilize sediment in benthic ecosystems, altering granulometry, enhancing organic matter cycling and oxygenation. We characterized the distribution of the mud shrimp Upogebia noronhensis and the associated macroinfauna...
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Ryan J. K. Dunn, David T. Welsh, Peter R. Teasdale, Franck Gilbert, Jean-Christophe Poggiale and Nathan J. Waltham
Laboratory mesocosm incubations were undertaken to investigate the influence of burrowing shrimp Trypaea australiensis (marine yabby) on sediment reworking, physical and chemical sediment characteristics and nutrients in sandy sediments receiving mangrov...
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Roger W. Bachmann, Mark V. Hoyer and Daniel E. Canfield
Field measurements of water quality in Iowa lakes contradict paleolimnological studies that used 210Pb dating techniques in 33 lakes to infer accelerating eutrophication and sediment accumulation in recent decades. We tested this hypothesis by analyzing ...
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Rafael Barroso Martins, Diego Alves do Vale, Vanessa Tomaz Rebouças, Marcelo Vinícius do Carmo e Sá
Pág. 229 - 235
The simultaneous use of periphyton and controlled C/N ratio of water may improve water quality and fish growth. The current assay investigated the interaction between periphyton and C/N ratio of water in rearing tanks with Niletilapia juveniles. The stud...
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Anaïs Richard, Xavier de Montaudouin, Auriane Rubiello and Olivier Maire
Trematode parasites are distributed worldwide and can severely impact host populations. However, their influence on ecosystem functioning through the alteration of host engineering behaviours remains largely unexplored. This study focuses on a common hos...
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Guillaume Bernard, Laura Kauppi, Nicolas Lavesque, Aurélie Ciutat, Antoine Grémare, Cécile Massé and Olivier Maire
The invasive mussel Arcuatula senhousia has successfully colonized shallow soft sediments worldwide. This filter feeding mussel modifies sedimentary habitats while forming dense populations and efficiently contributes to nutrient cycling. In the present ...
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Laura Farías,Marco A. Salamanca,Lizandro A. Chuecas
Pág. 241 - 254
Activity profiles of 234U, 238U and 210Pb, as well as the 234U/238U ratio, and 210Pbxs radiochemical parameters and macrobenthic abundance in sediments were measured and calculated at different times during a year (1991), along a transect between the hea...
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Jaehwan Seo and Bon Joo Koo
Although the thalassinidean mud shrimp Laomedia sp. is one of the most abundant species in the upper tidal flats along the west coast of Korea, little is known of its ecological characteristics and bioturbation effects on intertidal sediments. This study...
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Peter Feldens, Inken Schulze, Svenja Papenmeier, Mischa Schönke and Jens Schneider von Deimling
Backscatter mosaics based on a multi-frequency multibeam echosounder survey in the continental shelf setting of the North Sea were compared. The uncalibrated backscatter data were recorded with frequencies of 200, 400 and 600 kHz. The results showed that...
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Mercedes di Pasquo
Pág. 97 - 138
Two associations of palynomorphs recovered from eight samples from Los Monos Formation (late Eifelian-early Frasnian), cropping out at Balapuca, located at the Bolivian margin of the Bermejo River in the San Telmo range, are characterized. In the Tarija ...
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Evgeny Abakumov, Timur Nizamutdinov, Alla Lapidus, Georgy Istigechev and Sergey Loiko
The Chernevaya taiga is a unique ecosystem formed under the influence of a complex of geogenic and bioclimatic factors located in the foothill border of the southeastern part of Western Siberia. The combination of local climatic conditions and the compos...
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Ibrahim M. Ghandour, Hamad A. Al-Washmi, Athar A. Khan, Ammar A. Mannaa, Mohammed H. Aljahdali and Brian G. Jones
This study utilizes lithofacies characteristics, petrographic, XRD, and stable isotope data of Al-Mejarma beachrocks, Red Sea, Saudi Arabia, to interpret its depositional setting, origin of cement, and coastal evolution. The beachrock is 1.15 m thick, me...
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Justin J. Birchler, Courtney K. Harris, Christopher R. Sherwood and Tara A. Kniskern
Geochronologies derived from sediment cores in coastal locations are often used to infer event bed characteristics such as deposit thicknesses and accumulation rates. Such studies commonly use naturally occurring, short-lived radioisotopes, such as Beryl...
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Justin J. Birchler, Courtney K. Harris, Christopher R. Sherwood and Tara A. Kniskern
Geochronologies derived from sediment cores in coastal locations are often used to infer event bed characteristics such as deposit thicknesses and accumulation rates. Such studies commonly use naturally occurring, short-lived radioisotopes, such as Beryl...
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Justin J. Birchler, Courtney K. Harris, Christopher R. Sherwood and Tara A. Kniskern
Geochronologies derived from sediment cores in coastal locations are often used to infer event bed characteristics such as deposit thicknesses and accumulation rates. Such studies commonly use naturally occurring, short-lived radioisotopes, such as Beryl...
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