Results 71 to 80 of about 21,008 (228)

Water Quality Sampling, Analysis and Annual Load Determinations for TSS, Nitrogen and Phosphorus at the Washington County Road 76 Bridge on Ballard Creek [PDF]

open access: yes, 2005
The Illinois River Basin has experienced water quality impairment from non-point source pollution for many years. This fact was well documented in the State of Arkansas\u27 Water Quality Assessment report, the Soil Conservation Service River Basin Study,
Cash, L. Wade   +3 more
core   +2 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
APHA   +32 more
core   +1 more source

Phenotypic Plasticity Across Gradients of Predation and Competition in Larval Amphibians

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
Many taxa encounter a wide range of conditions for any particular environmental variable and they experience variation in multiple environmental variables simultaneously, which may have interactive effects if different environmental types induce opposing phenotypes.
Rick A. Relyea   +2 more
wiley   +1 more source

Consumption of periphyton and bioseston by Mozambique tilapia in aqua dams with three different substrates

open access: yesAquaculture Environment Interactions
Periphyton-based aquaculture can reduce feed input costs. Here we characterised the periphyton and bioseston formation in aqua dams stocked with net, plastic, and stone substrates.
KC Hlongwane   +2 more
doaj   +1 more source

Macroinvertebrate Communities Vary With Surface Water Permanence but Not Land Management in a Tallgrass Prairie Stream Network

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
Konza Prairie Biological Station, located within one of the largest remaining areas of native tallgrass prairie, is unique in that grazing and prescribed burn treatments, as well as surface water permanence, vary spatially. We found that aquatic macroinvertebrate communities vary with streamflow permanence, but not grazing presence or prescribed burns ...
Olivia Tow   +5 more
wiley   +1 more source

Periphyton pigment shifts in lakes with varying water colour: a possible monitoring method for freshwater Browning

open access: yesEcological Indicators
Despite several negative effects of browning, there are no sufficient bioindicators to monitor it. In this study, the effects of water quality on the photosynthetic pigment content of periphyton grown on artificial substrata in different depths were ...
Salla Rajala   +3 more
doaj   +1 more source

Periphyton effects on bacterial assemblages and harmful cyanobacterial blooms in a eutrophic freshwater lake: a mesocosm study

open access: yesScientific Reports, 2017
Periphyton comprises a broad range of autotrophic and heterotrophic organisms that grow on submerged surfaces in aquatic environments. To investigate the ecological roles of periphyton and their symbiotic bacterial assemblages related to the control of ...
Yingshun Cui   +8 more
doaj   +1 more source

Changes in the algal composition, bacterial metabolic activity and element content of biofilms developed on artificial substrata in the early phase of colonization [PDF]

open access: yes, 2007
Changes in the algal composition and metabolic profiles of bacterial communities as well as the inorganic components were studied on artificial substrata during the early phase of biofilm formation under laboratory conditions in September 2002 and 2003 ...
Borsodi, Andrea K.   +4 more
core   +1 more source

Limno‐STOICH: A comprehensive database linking the elemental stoichiometry of organisms with inland aquatic habitats

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract All organisms contain carbon, nitrogen, and phosphorus in widely ranging amounts and proportions. Integrating existing datasets enables quantification of this variation at global scales. Such efforts could leverage ecological stoichiometry theory, the study of elemental supply and imbalances in ecological interactions, to connect ecological ...
Jessica R. Corman   +82 more
wiley   +1 more source

Responses of Chironomidae (Diptera; Insecta) to the exclusion of shrimps and Ephemeroptera in a coastal forest stream, Rio de Janeiro, Brazil

open access: yesBrazilian Journal of Biology
In a benthic community on a continuous flat granite substrate in a third-order coastal forest stream, the dominant chironomid (Cricotopus) increased in number when shrimps (Macrobrachium olfersi and Potimirim glabra) and baetid ephemeropterans were ...
ML. Souza   +4 more
doaj   +1 more source

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