Results 41 to 50 of about 1,328 (184)
Journal of Oasis Agriculture and Sustainable DevelopmentThe study aims to highlight the diversity of leech species living in southwestern Tunisia. Our study highlights the prevalence of Limnatis nilotica, which represents 63.01% of the leech population, while the less frequently observed species include ...
Ichrak Khaled, Issam Saidi
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Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 34, Issue 9, September 2024.ABSTRACT Understanding how invasive species affect the stability and function of ecosystems is critical for conservation. Here, we quantified the effect of an actively suppressed invasive species on the Yellowstone Lake ecosystem using a food web energetics approach.
Hayley C. Glassic +9 more
wiley +1 more source
The Scientific World Journal, Volume 2, Issue 1, Page 546-557, 2002., 2002 Relationships between land‐use and river water quality assessed by means of biological and physical‐chemical variables and habitat characteristics were analysed for the Zwalm River basin in Flanders (Belgium). The research focussed on three zones within this river basin, each characterized by different land uses, and consequently, different types of ...
Veronique Adriaenssens +2 more
wiley +1 more source
Survey of the lesser silver water beetle Hydrochara caraboides in Cheshire [PDF]
, 1997 This is the report on the Survey of the Lesser Silver Water Beetle Hydrochara caraboides in Cheshire 1997 by the English Nature Research Reports. The three surveyed areas were the ponds at Reaseheath, Mickle Trafford and Brookhouse Farm. The report goes
Guest, Jonathan
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Revista Mexicana de Biodiversidad, 2005 The phylogenetic relationships of the suborder Erpobdelliformes, a group of non-sanguivorous leeches, were investigated with the use of mitochondrial cytochrome c oxidase subunit I, mitochondrial 12S rDNA and nuclear 18S rDNA.
Alejandro Oceguera-Figueroa +2 more
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Limnologica, 2014 Abstract Our study examines intra and interspecific variations in life histories, reproduction parameters, secondary production and feeding biology of two erpobdellid leech species ( Erpobdella octoculata and Erpobdella vilnensis ) across longitudinal gradient of streams.
Pavel Beracko, Alexandra Rogánska
openaire +1 more source
Biological report - fish mortality, River Conder, 21.7.79 [PDF]
, 1979 Following a large scale fish mortality caused by a considerable spillage of a pentachlbrophenol-based disinfectant from a mushroom farm, a biological survey of the river Conder was undertaken on 23.7.79.
Ingersent, B.
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Karyology ofErpobdella PunctataandNephelopsis Obscura(Annelida: Hirudinoidea) [PDF]
Caryologia, 1986 SUMMARYMeiosis of Erpobdella punctata and Nephelopsis obscura (Hirudinoidea: Erpobdellidae), has been studied in both testes and ovaries. At prophase I and metaphase I eight bivalents occurred in the majority of the nuclei in E. punctata; eleven in N. obscura. Spermatogonial metaphases showed 16 and 22 chromosomes in E. punctata and N.
R. N. Singhal +2 more
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Ecology of the Ráckeve-Sorokság Danube – a review [PDF]
, 2007 Present paper is a review on the Ráckeve-Soroksár Danube in ecological standpoint. The goal of this study is to collect and evaluate all of available publications in that conception, concerning this Danube arm.
Hufnagel, Levente +3 more
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Zoocoenological state of microhabitats and its seasonal dynamics in an aquatic macroinvertebrate assembly (Hydrobiological case studies on lake Balaton, No. 1.) [PDF]
, 2005 In the years 2002, 2003 and 2004 we collected samples of macroinvertebrates on a total of 36 occasions in Badacsony bay, in areas of open water (in the years 2003 and 2004 reed-grassy) as well as populated by reed (Phragmites australis) and cattail ...
Gaál, Márta +2 more
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