Buscar
Mostrando ítems 1-10 de 147
Magnetic properties of pelagic marine carbonates
(Amsterdam, 2013-12)
Pelagic carbonates are deposited far from continents, usually at water depths of 3000–6000 m, at rates below 10 cm/kyr, and are a globally important sediment type. Recent advances, with recognition of widespread preservation ...
Asymmetrical competition between aquatic primary producers in a warmer and browner world
(Ecological Society of America, 2016-10)
In shallow lakes, pelagic and benthic producers engage in spatially asymmetrical resource competition. Pelagic producers intercept the flux of light to the benthic habitat and benthic producers intercept the flux of ...
Fish debris in sediments from the last 25 kyr in the Humboldt Current reveal the role of productivity and oxygen on small pelagic fishes
(Elsevier, 2019)
Upwelling of cold, nutrient-rich water from the oxygen minimum zone (OMZ) off Peru sustains the world's highest production of forage fish, mostly composed of anchovy (Engraulis ringens). However, the potential impacts of ...
The effects of extreme drought events on the morphometry of shallow lakes: Implications for sediment resuspension and littoral and pelagic zone distribution
(Pergamon-Elsevier Science Ltd, 2020-11)
Shallow lakes, because of their depth, are more vulnerable to the effects of wind and changes in precipitation and evaporation that deeper lakes and thus respond more dramatically to extreme climatic events, such as drought. ...
Trophic structure on the West Antarctic Peninsula shelf: Detritivory and benthic inertia revealed by delta(13)C and delta(15)N analysis
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
Summer bloom-derived phytodetritus settles rapidly to the seafloor on the West Antarctic Peninsula (WAP) continental shelf, where it appears to degrade relatively slowly, forming a sediment ""food bank"" for benthic ...
From grey to red pelagic sediments during the Turonian: a benthic foraminifera perspective
(Centro de Ciências Matemáticas e da Natureza, Instituto de Geociências, Universidade Feder, 2006)
He, Ar, N and C isotope compositions in Tatun Volcanic Group (TVG), Taiwan: Evidence for an important contribution of pelagic carbonates in the magmatic source
(Elsevier, 2015)
The Tatun Volcanic Group (TVG), Northeastern Taiwan, is considered to be the extension of the Ryukyu arc, and belongs to the post-collisional collapse Okinawa Trough. Strong hydrothermal activity is concentrated along the ...
Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?
(AMER GEOPHYSICAL UNION, 2005-01-28)
The paleoceanographic recording fidelity of pelagic sediments is limited by chemical diagenesis and physical mixing (bioturbation and horizontal sediment transport). Diagenesis and bioturbation are relatively well-studied, ...
Geological mapping reveals the role of Early Jurassic rift architecture in the dispersal of calciturbidites: New insights from the Central and Northern Apennines
(Wiley Blackwell Publishing, Inc, 2020-02-05)
The role of sea-bottom topography in the dispersal of shallow water-derived calciturbidites across a submarine rift, as determined by the local extensional architecture, is under-investigated, namely with pelagic settings ...
Benthic organic carbon release stimulates bacterioplankton production in a clear-water subarctic lake
(University of Chicago Press, 2013-03)
We carried out a set of experiments in a small clear-water lake in northern Sweden during summer 2010 to assess the effect of organic C (OC) released from epipelic algae on pelagic bacterial production (BP). The release ...