Results 121 to 130 of about 35,976 (295)
Freshwater Macroinvertebrates [PDF]
, 2003 The purpose of this resource is to sample, identify, and count macroinvertebrates at a Hydrology Site. Students collect, sort, identify, and count macroinvertebrates from habitats at their site.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
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New Record of \u3ci\u3eBrachycercus Maculatus\u3c/i\u3e Berner (Ephemeroptera: Caenidae) From New York and a Key to Larvae of Northeastern Species [PDF]
, 2018 Brachycercus maculatus, a member of a rare group of mayflies, is now recorded for the first time from New York State in the upper Hudson River. An illustrated key to the Brachycercus larvae of northeastern North America is provided to spur further study ...
Abele, Lawrence +3 more
core +2 more sources
Brazilian Journal of BiologyPotamotrygon signata is an endemic freshwater stingray species in the Parnaíba River basin, Brazil. After its original description, only citations in systematic lists were recorded in the literature and the biology of the species remains unknown ...
G. Moro, P. Charvet, RS. Rosa
doaj +1 more source
The ecology of chalk-stream invertebrates studied in a recirculating stream [PDF]
, 1984 To study and qualify the factors influencing interactions between various trophic levels in natural hard-water streams, a recirculating artificial stream channel was constructed. This structure has enabled patterns of population change of stream fauna to
Ladle, M., Welton, J.S.
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Evaluación de los efectos de la urbanización en los arroyos de Tierra del Fuego [PDF]
, 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
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Evaluation of the Recovery of a Polluted Urban Stream Using the Ephemeroptera-Plecoptera-Trichoptera Index [PDF]
, 1998 Steve C. Baker, Homer F. Sharp
openalex +1 more source
Distribution of Fish Within Headwater Riffles of the Illinois River System, Washington County, Arkansas [PDF]
, 1987 Quantitative sampling of fish was performed in five headwater riffles of the Illinois River System, Washington County, Arkansas during low flow conditions.
Brown, Arthur V. +2 more
core +2 more sources
Five new genera of Baetidae (Insecta : Ephemeroptera) from South America [PDF]
, 1998 C. R. Lugo‐Ortiz, W. P. McCafferty
openalex +1 more source
Comparative studies on the structure of an upland African stream ecosystem [PDF]
, 2004 Upland stream systems have been extensively investigated in Europe, North America and Australasia and many of the central ideas concerning their function are based on these systems.
Abdallah, Ahmel +29 more
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