Results 31 to 40 of about 22,317 (250)

Negative Impacts of Trace Metal Contamination on the Macrobenthic Communities along the Santos Port Complex—Brazil

open access: yesEng, 2023
Port sites represent one of the most impacted coastal areas; this impact is due to intensive anthropogenic pressures. In addition to the port complex itself, associated activities, such as indiscriminate disposal of pollutants, including trace metals ...
Jéssica de F. Delgado   +7 more
doaj   +1 more source

Longitudinal patterns in an Arkansas River Valley stream: an Application of the River Continuum Concept [PDF]

open access: yes, 2017
The River Continuum Concept (RCC) provides the framework for studying how lotic ecosystems vary from headwater streams to large rivers. The RCC was developed in streams in eastern deciduous forests of North America, but watershed characteristics and land
Adams, S. R.   +9 more
core   +3 more sources

Seasonal feeding selectivity of brown trout Salmo trutta in five groundwater-dominated streams

open access: yesJournal of Freshwater Ecology, 2017
Availability and selection of macroinvertebrate prey is important to explain temporal and spatial variation in growth among stream salmonids. However, few studies contain information to identify such relationships.
Jennifer Lynn Cochran-Biederman   +1 more
doaj   +1 more source

Community structure of benthic macroinvertebrate fauna of river Ichamati, India

open access: yesJournal of Threatened Taxa, 2018
Benthic macroinvertebrate communities are frequently applied as indicators of aquatic ecosystem health as many species are responsive to pollution and abrupt changes in their surroundings.  The qualities of benthic invertebrate communities greatly depend
Arnab Basu   +3 more
doaj   +1 more source

Action Plan Items Related to EII Site Scores - Fiscal Year 2006 [PDF]

open access: yes, 2006
The Environmental Integrity Index (EII) was used to identify creek reaches with at least a 13% decrease in environmental health in using data collected in 2006 compared to initial conditions sampled in 1996 (phase I watersheds). City of Austin teams with
Herrington, Chris
core   +1 more source

CO2-driven experimental acidification effects on aquatic macroinvertebrates in a tropical stream

open access: yesJournal of Freshwater Ecology, 2017
Experimental acidification of a tropical stream was conducted to measure the effects of declining pH on aquatic macroinvertebrates. The mechanisms by which anthropogenic acidification occur in a freshwater stream system are relatively well understood ...
Crystal C. Klem   +1 more
doaj   +1 more source

Shifts in leaf litter breakdown along a forest–pasture–urban gradient in Andean streams [PDF]

open access: yes, 2016
Tropical montane ecosystems of the Andes are critically threatened by a rapid land-use change which can potentially affect stream variables, aquatic communities, and ecosystem processes such as leaf litter breakdown.
Breuer, Lutz   +5 more
core   +1 more source

Estimating sample representativeness in a survey of stream caddisfly fauna [PDF]

open access: yes, 2006
Obtaining an adequate and representative sample is a continuing challenge of community ecology. The present study focuses on what sample area represents adequately the structural composition of the caddisfly fauna of a riffle, at a given sampling ...
Erős, Tibor, Schmera, Dénes
core   +1 more source

Catchment conversion to agriculture alters freshwater macroinvertebrate community responses to flow disturbance: results from a replicated in‐stream experiment

open access: yesOikos, EarlyView.
Anthropogenic stressors often co‐occur in ecosystems, but their combined impacts are rarely assessed using field experiments. Press disturbances particularly can reshape community dynamics, altering their capacity to withstand or recover from acute pulse disturbances by modifying response diversity.
Bridget E. White   +6 more
wiley   +1 more source

Effects of macrobenthos on sediment-water oxygen and ammonium fluxes. Final Report. [PDF]

open access: yes, 1997
Sediments are an important location in determining the fate of nutrients entering the estuary. Role of sediments needs to be incorporated into water quality models.
Barnes, J.M.   +3 more
core  

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