Results 51 to 60 of about 23,786 (274)

A new substrate for sampling deep river macroinvertebrates [PDF]

open access: yes, 2009
We compared macroinvertebrate communities colonising multiplate samplers constructed from perspex or tempered hardboard (wood) with an alternative artificial substrate constructed from folded coconut fibre matting (coir) enclosed in nylon netting ...
Chadderton, W. Lindsay   +2 more
core   +2 more sources

Amynthas aspergillum (Perrier, 1872) (Clitellata, Megascolecidae): A new addition to the South Asian earthworm fauna [PDF]

open access: yesOpuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis
The presence of the exotic and potentially invasive pheretimoid earthworm Amynthas aspergillum (Perrier, 1872) of the family Megascolecidae is reported for the first time from South Asia.
Narayanan, Sasankan Prasanth   +3 more
doaj   +1 more source

Back to life after 50 years: effects of environmental flow restoration on macroinvertebrate biodiversity and river ecological status. A case study of the Valseco stream, Spain

open access: yesRestoration Ecology, EarlyView.
The construction of dams and reservoirs to meet increasing water and electricity demands has significantly altered many natural river flows, posing threats to the ecological integrity of freshwater ecosystems. Environmental flows (e‐flows) have been advocated to mitigate the negative impacts of hydroelectric power generation and to maintain healthy ...
Álvaro Fueyo   +9 more
wiley   +1 more source

Abundance, Diversity and Distribution of Benthic Macro-Invertebrates in the Flat Bayou Drainage Area, Jefferson County, Arkansas [PDF]

open access: yes, 1979
The main ditch of Flat Bayou Drainage in north central Jefferson County carries water southward into Plum Bayou which then shortly empties into the Arkansas River.
Rickett, John D.
core   +2 more sources

Description of a new earthworm species of the genus Drawida (Oligochaeta: Moniligastridae) from Northeast China and Far East Russia

open access: yesJournal of Asia-Pacific Biodiversity, 2021
A new species of Drawida Michaelsen 1900, named Drawida ganini Zhang and Wu sp nov., is described from the material collected in the Muling River of Heilongjiang Province, Northeast China, and the adjacent region near Russia.
Yufeng Zhang   +3 more
doaj   +1 more source

Environmental Studies at Newton Lake, Illinois: Tasks 4, 5, and 7 [PDF]

open access: yes, 1991
ID: 8658; issued March 1, 1991INHS Technical Report prepared for Marathon Oil ...
Nixon, Carolyn   +4 more
core  

Benthic and hyporheic invertebrate community responses to seasonal flow recession in a groundwater-dominated stream [PDF]

open access: yes, 2011
Natural hydrological variability in lotic ecosystems can include prolonged periods of flow recession. A reduction in discharge is accompanied by abiotic changes in benthic and hyporheic habitats, often including reductions in s habitat availability ...
Banks   +45 more
core   +1 more source

Report on Eight Unrecorded Species of Freshwater Oligochaetes in Korea

open access: yesTaxonomy
Freshwater oligochaetes, belonging to the class Oligochaeta, are vital components of aquatic ecosystems globally, contributing significantly to nutrient cycling, sediment dynamics, and overall ecosystem function.
Jeounghee Lee
doaj   +1 more source

Oligochaeta of the Danube River — a faunistical review [PDF]

open access: yesBiologia, 2013
The aim of this work is to discuss the distribution of Oligochaeta (Annelida) in the Danube River using the collections made by the Joint Danube Survey 2007 (JDS2) on more than 2800 km of the river. The basic faunistical features of the oligochaete assemblages were analysed with regard to three main sectors of the Danube (upper, middle and lower ...
Atanacković, Ana   +5 more
openaire   +3 more sources

Biodiversity in mountain soils above the treeline

open access: yesBiological Reviews, Volume 100, Issue 5, Page 1877-1949, October 2025.
ABSTRACT Biological diversity in mountain ecosystems has been increasingly studied over the last decade. This is also the case for mountain soils, but no study to date has provided an overall synthesis of the current state of knowledge. Here we fill this gap with a first global analysis of published research on cryptogams, microorganisms, and fauna in ...
Nadine Praeg   +36 more
wiley   +1 more source

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