Results 101 to 110 of about 42,726 (282)

Review of the present state of the environment, fish stocks and fisheries of the river Niger (West Africa) [PDF]

open access: yes, 2004
The Niger River is the fourth most important river in Africa. It is 4 200 km long with an estimated watershed area of 1 125 000 km2. It traverses a variety of ecological areas shared by a number of countries in the West African Region: Guinea, Mali ...
Laë, R.   +3 more
core  

Analyzing the discharge regime of a large tropical river through remote sensing, ground-based climatic data, and modeling [PDF]

open access: yes, 1996
This study demonstrates the potential for applying passive microwave satellite sensor data to infer the discharge dynamics of large river systems using the main stem Amazon as a test case.
Annette L. Schloss   +60 more
core   +2 more sources

High trophic niche overlap between sympatric peacock basses (Cichliformes: Cichlidae: Cichla): Concordant findings from three dietary analysis methods

open access: yesJournal of Fish Biology, EarlyView.
Abstract Dietary analysis has contributed to our understanding of animal niches, interspecific interactions, community structure and the flow of matter and energy in food webs. We employed three methods of dietary analysis to estimate trophic niche overlap between two peacock bass species, Cichla cataractae and Cichla ocellaris, across sympatric ...
Benton L. Fry   +2 more
wiley   +1 more source

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

open access: yesNew Phytologist, EarlyView.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow   +9 more
wiley   +1 more source

Surface water quality in Amazonian Floodplain Lakes, data set of the Lago Grande de Curuai Floodplain Lake, Pará‐Brazil

open access: yesGeoscience Data Journal
Between 2013 and 2017, we carried out nine field missions in the Lago Grande de Curuai floodplain, located in Pará state – North of Brazil – to collect samples for monitoring surface water quality.
Derlayne Dias Roque   +5 more
doaj   +1 more source

WATER CHEMICAL ANALYSIS OF THE OXBOW LAKES NEAR THE UPPER-TISZA RIVER [PDF]

open access: yesActa Geographica Debrecina. Landscape & Environment Series, 2007
The Tisza river plays an important role in the life of Eastern Hungary. Beside the river there are several oxbow lakes, cut off meanders. In this paper the water quality of these lakes was examined from the section of Tarpa to Rakamaz.
BEÁTA BABKA, SZILÁRD SZABÓ
doaj  

Potential Indicator Value of Subfossil Gastropods in Assessing the Ecological Health of the Middle and Lower Reaches of the Yangtze River Floodplain System (China)

open access: yesGeosciences, 2018
The lakes across China’s middle and lower reaches of the Yangtze River system have a long history of sustaining human pressures. These aquatic resources have been exploited for fisheries and irrigation over millennia at a magnitude of scales, with ...
Giri Kattel   +6 more
doaj   +1 more source

Sedimentology and fluvial styles of the uppermost Cretaceous continental deposits of the Austral-Magallanes Basin, Patagonia, Argentina [PDF]

open access: yes, 2018
The sedimentary infill of the Austral-Magallanes Basin since the onset of its foreland stage in the Lago Argentino region is dominated by deep-marine and coastal deposits. However, during the Late Cretaceous the basin accumulated a thick and poorly known
Cereceda, Abril   +7 more
core   +1 more source

River conservation and restoration in croplands: can we improve the common agriculture policy as an instrument of practice?

open access: yesRestoration Ecology, EarlyView.
Abstract This study investigates the integration of river restoration with the Common Agricultural Policy (CAP), focusing on the differences between European Union (EU) and Portuguese documents regarding river restoration terms. A thematic content analysis highlights that despite the varying document sizes, the proportion of mentions related to river ...
Leonor Santos   +2 more
wiley   +1 more source

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