DOI: 10.1515/rtuect-2016-0011
论文题名: Pike Esox Lucius distribution and feeding comparisons in natural and historically channelized river sections
作者: Ivanovs K.
刊名: Environmental and Climate Technologies
ISSN: 16915208
出版年: 2016
卷: 18, 期: 1 起始页码: 33
结束页码: 41
语种: 英语
英文关键词: Channelized
; Feeding
; Pike
; Pothamal
; River
Scopus关键词: biomonitoring
; channelization
; comparative study
; ecological impact
; electrofishing
; feeding behavior
; fish
; geographical distribution
; hydrodynamics
; predator
; river channel
; Latvia
; Esox lucius
英文摘要: During the last century a large portion of small and medium-sized rivers in Latvia were channelized, hydroelectric power stations were also built, which led to changes in the hydrodynamic conditions, geomorphological structure, as well as a change in the fish fauna. Fish are an integral part of any community in natural or man-made bodies of water. They actively participate in maintaining the system, balancing/equilibrium, energy, substance transformation and biomass production. They are able to influence other organisms in the ecosystem in which they live. The aim of the paper “Pike distribution and feeding comparisons in natural and historically channelized river sections” is to find out what pike feed on in different environments in Latvian rivers, such as natural and straightened river sections, as well as what main factors determine the composition of their food. Several points were assessed during the course of the study: the impact of environmental conditions on the feeding habits and the distribution of pike; the general feeding habits of predators in Latvian rivers; the feeding differences of predators in natural and straightened river sections; and lastly, rhithral and pothamal habitats were compared. The study was based on data from 2014 and 2015 on fish fauna monitoring. During the study, 347 pike were collected from 136 plots using electrofishing method. ©2016 Kaspars Ivanovs. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67479
Appears in Collections: 气候变化与战略
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作者单位: Institute of Energy Systems and Environment, Riga Technical University, Azenes iela 12/1, Riga, Latvia
Recommended Citation:
Ivanovs K.. Pike Esox Lucius distribution and feeding comparisons in natural and historically channelized river sections[J]. Environmental and Climate Technologies,2016-01-01,18(1)