Results 11 to 20 of about 89,500 (309)

Experimental reintroduction of woody debris on the Williams River, NSW: geomorphic and ecological responses [PDF]

open access: yes, 2004
A total of 436 logs were used to create 20 engineered log jams (ELJs) in a 1.1 km reach of the Williams River, NSW, Australia, a gravel-bed river that has been desnagged and had most of its riparian vegetation removed over the last 200 years.
Gehrke, P.C.   +11 more
core   +1 more source

Impact of the riverbed morphology on the source of organic material and the trophic structure of fish community along the upper reaches of the Nevežis River, Lithuania [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2016
Background. The catchment of the Nevežis River, the sixth longest river in Lithuania, is among the most affected by agricultural activities. Although seriously disturbed by land reclamation and agricultural pollution, the Nevežis River ...
L. Čivas   +2 more
doaj   +3 more sources

A numerical tool to integrate biophysical diversity of a large regulated river: hydrobiogeochemical bases. The case of the Garonne River (France) [PDF]

open access: yes, 2003
This article presents the bases of a hydrobiogeochemical model of the Garonne River (southwest France) which has been developed to integrate physical and biological processes during summer low-water periods. The physical part of this model is composed of
Vervier, Philippe   +6 more
core   +1 more source

Hydromorphological control of phosphorus in a large free-flowing gravel bed river: the Garonne river (France) [PDF]

open access: yes, 2001
The objective of this paper is to relate phosphorus (P) transport dynamics and hydromorphological characteristics of a large human-influenced river, the River Garonne within a sector receiving the waste water of a sewage treatment plant for a population ...
S. Bonvallet Garay   +5 more
core   +1 more source

Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River

open access: yesActa Limnologica Brasiliensia, 2017
Aim: We assessed the effect of environmental factors on the structure of periphytic ostracods communities along the river-floodplain system of the Upper Paraná River.
Janet Higuti   +6 more
doaj   +1 more source

Changements environnementaux, dérives biologiques et perspectives de restauration du Rhône français après 200 ans d’influences anthropiques.

open access: yesVertigO, 2003
Three main periods described the history of fluvial ecosystems of the French Rhône River during the last centuries. Direct and indirect human impacts increased during this evolution.
Jean-François Fruget, Jeanne Dessaix
doaj   +1 more source

Relationship between genetic and environmental characteristics of Lithuanian populations of purple loosestrife (Lythrum salicaria)

open access: yesJournal of Environmental Engineering and Landscape Management, 2022
The present study evaluated genetic diversity of Lithuanian populations of Lythrum salicaria in relation to parameters of riparian environment. Growing along Nemunas, Seaside and Lielupė river basins, 15 populations were examined using amplified fragment
Lina Jocienė   +8 more
doaj   +1 more source

Effects of flow regulation in the life-cycles of a Mediterranean cyprinid species, the Iberian chub (Squalius carolitertii Doadrio, 1988)

open access: yesFrontiers in Marine Science, 2015
River regulation tends to modify flow patterns, causing a reduction of discharge variability and disturbing environmentally cued life cycles of fishes.
Carlos Manuel Alexandre   +2 more
doaj   +1 more source

Variabilité temporelle des peuplements piscicoles dans la section médiane du Bas-Rhône

open access: yesKnowledge and Management of Aquatic Ecosystems, 1995
Le suivi du peuplement piscicole du Bas-Rhône (aménagements de Montélimar et de Donzère-Mondragon), réalisé entre 1983 et 1994, permet d'aborder la variabilité interannuelle au sein de l'ichtyocénose.
CARREL G., PONT D., RIVIER B.
doaj   +1 more source

Causes and effects of morphological changes of the regulated channel of the river Toplica [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2005
The regulation of small torrential watercourses outside the urbanized areas is often based on the so-called field type of regulation. In the selection of this concept, after the regulation works, the new channel is left to the natural process of the ...
Đeković Vojislav, Gajić Grozdana
doaj   +1 more source

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