Results 81 to 90 of about 1,651,917 (208)

Flux and Isotopic Composition of Sedimentary Carbon Subducting Along the World's Trenches

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Here we provide comprehensive estimates for the subducted sedimentary flux of inorganic and organic carbon and δ13C at 16 trench segments worldwide. Our calculations provide minimum (incoming sediment), maximum (trench fill) and best estimates (underthrust) of carbon fluxes.
Terry Plank, Alberto Malinverno
wiley   +1 more source

DRBCurrents Winter 1998

open access: yes, 1998
DRBCurrents is a quarterly newsletter, published by Delaware River Basin Commission, an Interstate/Federal agency covering areas of Delaware, New Jersey, New York, Pennsylvania that manages the water resources within the 13,539-square mile-basin. In this

core   +1 more source

Patterns of Style, Diversity, and Similarity in Middle Orinoco Rock Art Assemblages

open access: yesArts, 2019
The area encompassed by the Orinoco river basin is home to some of the largest and most diverse rock art sites in lowland South America. In this paper, we aim to formally describe the spatial distribution and stylistic attributes of rock engravings and ...
Philip Riris, José Oliver
doaj   +1 more source

Ecohydrology of riparian forests in the Orinoco River Basin

open access: yes, 2002
This paper describes some important ecohydrological interactions within riparian forests in lower Orinoco using the Caura and Mapire rivers in Venezuela. The importance of riparian forests and hydrological seasonality for aquatic faunal ecology and human
Petts, G.E.   +11 more
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Lista preliminar de los peces del río Papunahua, cuenca del río Inírida - departamento del Vaupés, Colombia

open access: yesBiota Colombiana, 2009
Fish sampling in the Papunahua river (Inírida river basin-colombian Orinoco) (october and november 2005) revealed 86 fish species grouped in 64 genera, 28 families, and 8 orders. Orders with the largest numbers of species were Characiformes (42 species),
Hollman Miller-Hurtado   +2 more
doaj   +1 more source

Proposal of a non-lethal visual census method to estimate freshwater stingray abundance

open access: yesUniversitas Scientiarum, 2016
There is not a current method to estimate South American freshwater stingray’s abundance. Therefore we designed a census method and tested it in the field.
Mónica Andrea Morales-Betancourt   +1 more
doaj   +1 more source

Methane fluxes from tropical wetlands of the Orinoco River Basin and their regional implications

open access: yes
Abstract. The Llanos del Orinoco, a vast tropical savanna floodplain in northern South America, plays a significant yet understudied role in the global methane (CH4) budget. This study synthesizes existing data to evaluate CH4 emissions from the region, highlighting the interplay between natural processes and anthropogenic influences.
Amaral, J.   +15 more
openaire   +2 more sources

Soil ecosystem services and land use in the rapidly changing Orinoco River Basin of Colombia

open access: yesAgriculture, Ecosystems & Environment, 2014
Abstract In the Orinoco River Basin of eastern Colombia large scale and rapid conversion of natural savannas into commercial agriculture exists as a critical threat for the ecological integrity of this fragile region. The highly acidic and compacted soils inherent to this region require thorough physical and chemical conditioning in order for ...
Lavelle, Patrick M.   +14 more
openaire   +2 more sources

Hydrologic Conditions in the Delaware River Basin, Annual Report 2009

open access: yes, 2009
This is an Annual Report of the hydrological conditions in the Delaware River Basin for 2009. It includes the hydrologic highlights of 2009, as well as summaries of precipitation, streamflow, reservoir storage, ground water, and salt line patterns in the

core   +1 more source

Missouri River Basin Commission Annual Report, 1975 [PDF]

open access: yes, 1975
The Annual Report covers the first full year of operation of the Missouri River Basin ...

core  

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