Results 101 to 110 of about 31,733 (262)

Aquatic macroinvertebrates

open access: yesAtzavara, L', 2015
Despite covering only 0.8% of the Earth’s surface, freshwater biodiversity accounts for 9.5% of all described species. Aquatic macroinvertebrates, and in particular aquatic insects, are one of the most diverse faunal groups of fluvial ecosystems. Macroinvertebates are benthic invertebrates measuring more than 0.25 mm in size with a wide variety of ...
openaire   +1 more source

Disentangling the Drivers of a Piscivorous Intra‐Annual Cohort and the Contributions of Three Cohorts to Early‐Year Class Strength in Pikeperch (Sander lucioperca)

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Using pikeperch (Sander lucioperca) as a model species, we investigated the factors influencing fluctuations in the abundance of piscivorous intra‐annual cohorts and assessed the role of three distinct cohorts: extremely small (ES), ordinary (or mid‐sized) fingerlings, and piscivorous in shaping year‐class strength.
Million Tesfaye   +21 more
wiley   +1 more source

Linking Biologic Metrics to Hydrologic Characteristics in Austin, Texas Streams [PDF]

open access: yes, 2011
This report compiles various hydrological information from several Austin creeks (including Waller) to study their impact on aquatic life.Urbanization can alter the hydrology of creeks as land use changes as represented by increases in impervious cover ...
Richter, Aaron
core   +1 more source

Ontogeny of escape response and body shape in threespine stickleback (Gasterosteus aculeatus L.)

open access: yesJournal of Fish Biology, EarlyView.
Abstract Escape responses in fishes provide insight into accelerative motions and behavioural response times of these animals, linking numerous fitness‐related traits. We sought to connect escape response performance to genotype and phenotype across ontogenetic stages within a single population of threespine stickleback (Gasterosteus aculeatus L.) to ...
Aspen M. Kozak   +4 more
wiley   +1 more source

Do contaminants originating from state-of-the-art treated wastewater impact the ecological quality of surface waters? [PDF]

open access: yes, 2013
Since the 1980s, advances in wastewater treatment technology have led to considerably improved surface water quality in the urban areas of many high income countries.
A Borja   +53 more
core   +3 more sources

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

open access: yesJournal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa   +8 more
wiley   +1 more source

Flow alteration-ecology relationships in Ozark Highland streams: Consequences for fish, crayfish and macroinvertebrate assemblages [PDF]

open access: yes, 2019
We examined flowalteration-ecology relationships in benthic macroinvertebrate, fish, and crayfish assemblages in Ozark Highland streams, USA, over two years with contrasting environmental conditions, a drought year (2012) and a flood year (2013).
Leasure, Douglas R.   +2 more
core   +1 more source

Evolution of a stream ecosystem in recently deglaciated terrain

open access: yes, 2011
Climate change and associated glacial recession create new stream habitat that leads to the assembly of new riverine communities through primary succession.
Brown, LE   +5 more
core   +1 more source

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