Results 61 to 70 of about 18,310 (213)

Hyporheic invertebrates as bioindicators of ecological health in temporary rivers: a meta-analysis [PDF]

open access: yes, 2013
Worldwide, many rivers cease flow and dry either naturally or owing to human activities such as water extraction. However, even when surface water is absent, diverse assemblages of aquatic invertebrates inhabit the saturated sediments below the river bed
Anderson   +67 more
core   +1 more source

Stoneflies (Plecoptera)

open access: yes, 2020
Executive Summary: Based on just over 12,000 records for the island of Ireland, the 20 species of stonefly (Plecoptera) on the Irish checklist were evaluated against the Red List criteria produced by the International Union for the Conservation of Nature (IUCN). This is the first time the threat status of the Irish Plecoptera has been assessed.
Feeley, Hugh B.   +3 more
openaire   +1 more source

The Plecoptera of Øvre Heimdalsvatn

open access: yesEcography, 1978
The stonefly fauna was studied in the exposed zone and on soft bottom in deeper waters. Emergence was recorded by traps. Ten species were found. All were recorded in the exposed zone. Diura bicaudata (L.) and Nemoura avicularis Morton dominated.During the winter N avicularis occurred in large numbers on soft bottom at nearly all depths while D ...
openaire   +2 more sources

Comparison of species richness of light trap-collected caddisfly assemblages (Insecta: Trichoptera) using rarefaction [PDF]

open access: yes, 2002
ConselVation value of light trap-collected caddisfly assemblages(Insecta: Trichoptera) was evaluated on the basis of their species richness. The assemblage coming from an artificial stream showed a higher conservation value based on species richness than
Schmera, Dénes
core  

TGLE Vol. 52 Nos. 1 & 2 Full Issue [PDF]

open access: yes, 2019
Full issue for TGLE Vol. 52 Nos. 1 &

core   +1 more source

Review of investigation on the feeding of the European grayling [Translation from: Flora Slodkowodna Polski. Tom 2. Cyanophyta, Glaucophyta (ed. K. Starmach) p350-352. Warsaw, Polska Academia Nauk, 1966] [PDF]

open access: yes, 1981
The composition of the food of the European grayling and the character of its feeding has been studied fully enough, but this knowledge is scattered in the literature and often contradictory.
Zinov'ev, E.V.
core  

A Modification of the Biotic Index of Organic Stream Pollution to Remedy Problems and Permit Its Use Throughout the Year [PDF]

open access: yes, 2018
The biotic index of the arthropod fauna of streams is modified by limiting to ten the number of individuals in each taxon used in its calculation. This reduces detrimental effects on the index of certain fairly tolerant taxa in clean streams, effects of ...
Hilsenhoff, William L
core   +2 more sources

Evaluación de los efectos de la urbanización en los arroyos de Tierra del Fuego [PDF]

open access: yes, 2017
We set out to understand how urbanization affects streams in Ushuaia, Tierra del Fuego. Paired ttestsand linear regressions were used to compare physico-chemical stream habitat variables (i.e., temperature,turbidity, conductivity, dissolved oxygen and pH)
Anderson, Christopher Brian   +3 more
core  

Mesozoic Coleopteran Faunas fromArgentina: Geological Context, Diversity, Taphonomic Observations, and Comparison with Other Fossil Insect Records [PDF]

open access: yes, 2012
The order Coleoptera is the most diversified group of the Class Insecta and is the largest group of the Animal Kingdom. This contribution reviews the Mesozoic insects and especially the coleopteran records from Argentina, based on bibliographical and ...
Gallego, Oscar Florencio   +2 more
core   +2 more sources

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