Results 71 to 80 of about 68,431 (295)

The role of macroinvertebrates for conservation of freshwater systems

open access: yesEcology and Evolution, 2017
Freshwater ecosystems are the most threatened ecosystems worldwide. Argentinian‐protected areas have been established mainly to protect vertebrates and plants in terrestrial ecosystems.
C. Nieto   +10 more
semanticscholar   +1 more source

Potential Impacts of Low Flows on Fish Foodscapes and Production in a Braided River

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Changes in river discharge affect the physical composition and connectivity of habitats which, in turn, may shape the spatial distribution of fish food abundance, accessibility and quality—the ‘foodscape’—of river ecosystems. However, the influence of river flows on fish foodscapes has received very little attention from scientists. We studied
Rick J. Stoffels   +11 more
wiley   +1 more source

A permeable hyporheic zone may contribute to buffer the effects of a drying event on prey availability for salmonid juveniles

open access: yesKnowledge and Management of Aquatic Ecosystems
Climate change is increasing the intensity and frequency of hydrological events in freshwater. Summer droughts and drying events drastically reduce the favourable habitat for aquatic organisms shaping interactions among species.
Arevalo Elorri   +7 more
doaj   +1 more source

Community structure of benthic macroinvertebrates in reclaimed and natural tidal flats of the Yangtze River estuary

open access: yesAquaculture and Fisheries, 2019
Previous studies have found differences between communities of benthic macroinvertebrates living in constructed tidal flats compared with natural ones.
Junzeng Xue   +4 more
doaj   +1 more source

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command   +8 more
wiley   +1 more source

Benthic macrofauna and the limnological parameters of a first-order stream in Atlantic Forest of Brazilian Northeast

open access: yesActa Limnologica Brasiliensia, 2014
AIM: The present study aimed to elucidate if the water physical and chemical parameters from a first order stream of Biological Reserve of Saltinho from south Pernambuco induces in the distribution and abundance of benthic macroinvertebrates.
Janaina Câmara Siqueira da Cunha   +4 more
doaj   +1 more source

Identity Play: Middle School Youths' Provisional Self‐Making in Horizon‐Expanding STEM Spaces

open access: yesScience Education, EarlyView.
ABSTRACT This study introduces identity play as an analytic construct for science education to explore improvisational dimensions of middle school students' STEM identity development in multiple out‐of‐school learning experiences focused on environmental problem‐solving.
Heidi B. Carlone, Alison K. Mercier
wiley   +1 more source

Ecological integrity of boreal streams [PDF]

open access: yes, 2007
Running waters provide a number of services for humans, such as drinking water and food resources and many freshwater animals are confined and specialised to this environment.
Bergfur, Jenny
core  

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

Macroinvertebrates and Fishes as Bioindicators of Stream Water Pollution

open access: yes, 2017
Freshwater ecosystems worldwide have been progressively deteriorated during the past decades due to an increasing human pressure that has lead to a decrease in aquatic biodiversity.
C. Valdovinos   +3 more
semanticscholar   +1 more source

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