Community structure and phenology of chironomids (Insecta: Chironomidae) in a Patagonian Andean stream
نویسندگان
چکیده
منابع مشابه
Evaluation of water quality of an urban stream in southeastern Brazil using Chironomidae larvae (Insecta: Diptera).
In order to estimate the water quality of São Pedro stream, through distribution and composition of Chironomidae larvae present in the sediment four sampling sites were selected. In each sampling site, three sediment samples were collected within a period of twelve months using the Petersen (0.0189 m²) and the van Veen (0.0518 m²) dredges. Samples were washed through a sieve with a 0.21 mm mesh...
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testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...
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ژورنال
عنوان ژورنال: Limnologica
سال: 2007
ISSN: 0075-9511
DOI: 10.1016/j.limno.2006.09.005