Results 21 to 30 of about 95,233 (325)

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.
A. Noffke, Christian Hensen, S. Sommer, Florian Scholz, Lisa Bohlen, Thomas Mosch, Michelle Graco, Klaus Wallmann   +7 more
openalex   +5 more sources

Benthic transition zones in the Atlantic gateway to a changing Arctic ocean

Progress in Oceanography, 2022
The biogeographic transition from boreal to Arctic marine communities entails a strong taxonomic and functional turnover. Communities living in these areas are being strongly affected by climate warming with rapid reorganizations and change in ecosystem functioning.
Lis L. Jørgensen, Laurene Pecuchet, Randi B. Ingvaldsen, Raul Primicerio   +3 more
openaire   +3 more sources

Benthic and hyporheic invertebrate community responses to seasonal flow recession in a groundwater-dominated stream [PDF]

, 2011
Natural hydrological variability in lotic ecosystems can include prolonged periods of flow recession. A reduction in discharge is accompanied by abiotic changes in benthic and hyporheic habitats, often including reductions in s habitat availability ...
Banks, Boulton, Boulton, Boulton, Boulton, Caruso, Clarke, Clinton, Cooling, Covich, Datry, Datry, Death, Dewson, Dewson, Dole-Olivier, Dole-Olivier, Franken, Griffith, Hannaford, Hannah, James, James, James, Lake, Langan, Malard, Malcolm, Malcolm, Maridet, Marmonier, McGrath, McIntosh, Monk, Murdoch, Olsen, Storey, Stubbington, Stubbington, Stubbington, Webb, Wisenden, Wood, Wood, Wood, Wood   +45 more
core   +1 more source

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

Spatial variability in the hyporheic zone refugium of temporary streams [PDF]

, 2011
A key ecological role hypothesized for the hyporheic zone is as a refugium that promotes survival of benthic invertebrates during adverse conditions in the surface stream.
Reid, I, Stubbington, R, Wood, PJ
core   +1 more source

Benthic phosphorus cycling within the Eurasian marginal sea ice zone [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
The Arctic Ocean region is currently undergoing dramatic changes, which will likely alter the nutrient cycles that underpin Arctic marine ecosystems. Phosphate is a key limiting nutrient for marine life but gaps in our understanding of the Arctic phosphorus (P) cycle persist.
Matt O'Regan, Christian März, Michael Nairn, Jens Matthiessen, Ilka Peeken, Nathalie Morata, Allyson Tessin, Allyson Tessin, Monika Kędra   +8 more
openaire   +3 more sources

Benthic nitrogen cycling traversing the Peruvian oxygen minimum zone [PDF]

Geochimica et Cosmochimica Acta, 2011
Benthic nitrogen (N) cycling was investigated at six stations along a transect traversing the Peruvian oxygen minimum zone (OMZ) at 11 °S. An extensive dataset including porewater concentration profiles and in situ benthic fluxes of nitrate (NO3–), nitrite (NO2–) and ammonium (NH4+) was used to constrain a 1–D reaction–transport model designed to ...
Lisa Bohlen, Andrew W. Dale, Stefan Sommer, Thomas Mosch, C. Hensen, Anna Noffke, Florian Scholz, K. Wallmann   +7 more
openalex   +3 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

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

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