Distribution of fish in the subarctic lake
نویسندگان
چکیده
The paper studies fish population of an isolated lake in the subarctic zone. study features distribution fish, assessment their abundance and size structure were carried out by echometric method using hydroacoustic complexes geoinformation systems. research found that is represented 4 species fish: roach, perch, pike peled, with absolute dominance cyprinids. Their share total number reservoir was >80%. Features horizontal are mainly due to trophic-defensive behavior (concentration juveniles littoral), where it possible use macrophytes as shelters from visually oriented predators - perch pike. In horizons water column depths <5 >5 m, 72.4 27.6% recorded, average density at considered 2149 398 ind. / ha. vertical aspect, determined both littoral) thermoregulatory peled on drope depth profundal zone).
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ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2023
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202339007001