Results 21 to 30 of about 99,968 (304)

Changes in invertebrate assemblage composition in benthic and hyporheic zones during a severe supraseasonal drought [PDF]

, 2014
Droughts are unpredictable disturbances characterized in streams by declining flow, reduced habitat availability, and deteriorating abiotic conditions.
Boulton, AJ, Little, S, Stubbington, R, Wood, PJ   +3 more
core   +2 more sources

Benthic phosphorus cycling in the Peruvian oxygen minimum zone [PDF]

Biogeosciences, 2015
Abstract. Oxygen minimum zones (OMZs) that impinge on continental margins favor the release of phosphorus (P) from the sediments to the water column, enhancing primary productivity and the maintenance or expansion of low-oxygen waters. A comprehensive field program in the Peruvian OMZ was undertaken to identify the sources of benthic P at six stations,
U. Lomnitz, S. Sommer, A. W. Dale, C. R. Löscher, A. Noffke, K. Wallmann, C. Hensen   +6 more
openaire   +4 more sources

Understanding Environmental Changes in Temperate Coastal Seas: Linking Models of Benthic Fauna to Carbon and Nutrient Fluxes

Frontiers in Marine Science, 2020
Coastal seas are highly productive systems, providing an array of ecosystem services to humankind, such as processing of nutrient effluents from land and climate regulation.
Eva Ehrnsten, Eva Ehrnsten, Xiaole Sun, Christoph Humborg, Christoph Humborg, Alf Norkko, Alf Norkko, Oleg P. Savchuk, Caroline P. Slomp, Karen Timmermann, Bo G. Gustafsson, Bo G. Gustafsson   +11 more
doaj   +1 more source

Faunal response to benthic and hyporheic sedimentation varies with direction of vertical hydrological exchange [PDF]

, 2014
1. Sedimentation and clogging of benthic and hyporheic zone substrates is increasingly being recognised as one of the greatest threats to the ecological integrity of riverine ecosystems globally. This ex-situ study examined the influence of sedimentation
Bo, Boano, Boulton, Boulton, Boulton, Brunke, Brunke, Bruno, Collins, Davy-Bowker, Descloux, Descloux, Descloux, Dole-Oliver, Dunbar, Evans, Extence, Fowler, Franken, Gayraud, Gledhill, Greig, Huettel, IBM Corp, Izagirre, Jones, Jones, Joyce, Kemp, Krause, Larned, Larson, MacNeil, MacNeil, Malcolm, Maridet, Navel, Olsen, Pacioglu, Packman, Packman, Pepin, Plenet, Ren, Richards, Robertson, Ryan, Sarriquet, Simpson, Studinski, Stump, Taylor, Walters, Wang, Weigelhofer, Wood, Wood, Xu, Zweig   +58 more
core   +2 more sources

Stable Isotope Analysis of Food Web Structure and the Contribution of Carbon Sources in the Sea Adjacent to the Miaodao Archipelago (China)

Fishes, 2022
The littoral zones around archipelagos are highly productive coastal habitats that serve as biodiversity hotspots and provide valuable ecosystem services that are different from those of the pelagic and profundal zones.
Yongsong Zhao, Tao Yang, Xiujuan Shan, Xianshi Jin, Guangliang Teng, Chao Wei   +5 more
doaj   +1 more source

Benthic iron and phosphorus fluxes across the Peruvian oxygen minimum zone [PDF]

Limnology and Oceanography, 2012
Benthic fluxes of dissolved ferrous iron (Fe2+) and phosphate (TPO4) were quantified by in situ benthic chamber incubations and pore‐water profiles along a depth transect (11°S, 80‐1000 m) across the Peruvian oxygen minimum zone (OMZ). Bottom‐water O2 levels were < 2 µmol L−1 down to 500‐m water depth, and increased to ∼ 40 µmol L−1 at 1000 m.
Noffke, Anna, Hensen, Christian, Sommer, Stefan, Scholz, Florian, Bohlen, Lisa, Mosch, Thomas, Graco, M., Wallmann, Klaus   +7 more
openaire   +2 more sources

The role of benthic foraminifera in the benthic nitrogen cycle of the Peruvian oxygen minimum zone [PDF]

Biogeosciences, 2012
Abstract. The discovery that foraminifera are able to use nitrate instead of oxygen as energy source for their metabolism has challenged our understanding of nitrogen cycling in the ocean. It was evident before that only prokaryotes and fungi are able to denitrify.
N. Glock, J. Schönfeld, A. Eisenhauer, C. Hensen, J. Mallon, S. Sommer   +5 more
openaire   +4 more sources

Contribution des zones d'échanges entre eau de surface et eau souterraine à la biodiversité des hydrosystèmes : exemple d'une rivière méditerranéenne, la Cèze

Physio-Géo, 2019
In a close future, Mediterranean rivers will support strong disturbances due to climate changes, with inexorable consequences for their fauna. The invertebrate biodiversity of the Cèze River (South of France) was studied in a karstic area.
Pierre Marmonier, Marie-José Dole-Olivier, Michel Creuzé des Châtelliers, Hervé Chapuis, Jordan Re-Bahuaud, Anne Johannet, Laurent Cadilhac   +6 more
doaj   +1 more source

Low flow controls on benthic and hyporheic macroinvertebrate assemblages during supra-seasonal drought [PDF]

, 2009
Despite the widely accepted importance of the hyporheic zone as a habitat for stream macroinvertebrates during floods, few data exist regarding community composition and distribution during periods of low flow or drought in perennial streamsi ...
Acuna, Battin, Bo, Bonada, Bou, Boulton, Boulton, Boulton, Boulton, Boulton, Boulton, Boulton, Brunke, Caruso, Clinton, Datry, Davy-Bowker, del Rosario, Demuth, Dewson, Dole-Olivier, Extence, Fenoglio, Gibert, Hannah, Harris, Harrison, Hendricks, Hose, Humphries, James, Lake, Lake, Lefebvre, Lytle, Malard, Malcolm, Marsh, Marsh, Marxsen, Meyer, Monk, Mulholland, Parr, Pinay, Prior, Smakhtin, Smakhtin, Smock, Stanford, Stofleth, Suren, Suren, Tallaksen, Tomlinson, Westwood, Williams, Wood, Wood, Wood, Wood, Wood, Wood, Wright, Wright, Youngson   +65 more
core   +2 more sources

Benthic and interstitial habitats of a lentic spring as invertebrate refuges during supra-seasonal drought [PDF]

, 2013
Instream refuges are places where invertebrates persist during disturbances due to reduced adverse impacts. During droughts, low flows may be accompanied by elevated temperatures, and potential refuges including subsurface sediments and spring-fed ...
Stubbington, R, Wood, PJ
core   +1 more source