A Modification of the Biotic Index of Organic Stream Pollution to Remedy Problems and Permit Its Use Throughout the Year [PDF]
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
The ancestor of today's pinapinao, Hawaiian Megalagrion damselflies, diverged from Ischnurinae around 51 MA and likely evolved for over 20 MA before colonizing the Northwestern Hawaiian Islands. An ancestor of Megalagrion colonized the Northwestern Hawaiian Islands and diversified into ecological niches with four new breeding habitats and two new gill ...
Robert K. Hadfield +10 more
wiley +1 more source
Mesozoic Coleopteran Faunas fromArgentina: Geological Context, Diversity, Taphonomic Observations, and Comparison with Other Fossil Insect Records [PDF]
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
The Pangean journey of ‘south forestflies’ (Insecta: Plecoptera) revealed by their first fossils
The ‘south forestflies’ (Notonemouridae) are known from the southern hemisphere. However, their successive closest sister-groups all occur in the northern hemisphere, suggesting a north-to-south migration at some stage of their evolution.
Yingying Cui, D. Ren, O. Béthoux
semanticscholar +1 more source
Unraveling multipredator impacts in salmon‐bearing rivers using quantitative DNA metabarcoding
Abstract Ecological impacts of invasive species are mounting as their numbers and geographic extent continue to increase. Across extensive parts of their range, Pacific salmon (Oncorhynchus spp.) smolts face an expanding gauntlet of nonnative predators during their seaward migration.
John J. Winkowski +2 more
wiley +1 more source
Evaluación de los efectos de la urbanización en los arroyos de Tierra del Fuego [PDF]
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
Persistence of Urban Stream Syndrome Effects from Point Source and Non-Point Source Pollutants [PDF]
In a previous study, Sager Creek, a small 1st-3rd order stream in northwest Arkansas was shown to be negatively impacted by urban land usage within the watershed, producing a stream that exhibited several indicators of urban stream syndrome.
Wakefield, T. S.
core +3 more sources
El conocimiento de Plecoptera en la Patagonia se debe en gran parte a la labor de J. Illies, llevada a cabo en las décadas del 50 y 60 del siglo pasado.
Pablo Pessacq
doaj
Biological research of Grabia River - fifty years of activity [PDF]
Grabia, a small still close to natural conditions lowland river, has been an object of special interest for Łódź hydrobiologists for more than 50 years.
Siciński, Jacek, Tończyk, Grzegorz
core
Distribution and ecology of the stoneflies (Plecoptera) of Flanders (Belgium) [PDF]
Based on a literature survey and the identification of all available collection material from Flanders, a checklist is presented, distribution maps are plotted and the relationship between the occurrence of the different species and water characteristics
Goethals, Peter, Lock, Koen
core +1 more source

