NDLI: Seasonal habitat utilization and movement patterns of the threatened Brachymystax lenok tsinlingensis in a Korean river

Content Provider	Springer Nature Link
Author	Yoon, Ju Duk Kim, Jeong Hui Jo, Hyun Bin Yeom, Min Ae Heo, Woo Myung Joo, Gea Jae Jang, Min Ho
Copyright Year	2014
Abstract	Threatened fish species that utilize riverine environments are faced with critical habitat degradation caused by various disturbances. Brachymystax lenok tsinlingensis, has been designated as a threatened species by the South Korean Ministry of Environment. In this study, we evaluated the movement patterns and seasonal habitat utilization of this species was monitored by radio telemetry during the overwintering and spawning periods. Within each period, no statistical difference in total distance travelled and linear range was identified between years (two-way MANOVA, Wilks’ lambda = 0.971, f = 0.271, P = 0.896). However, the mean total distance and linear range were longer during the spawning period compared to the overwintering period. Less movement was recorded during the overwintering period. A total of 8 tagged fish (24.2 %) moved upriver to the Songjeongri or the Byeongo streams (tributaries of the Nakdong River) for spawning. Movement to the spawning grounds was started with increased discharges, which were caused by rainfall and melting snow (following a rise in water temperature in late February). The fish returned to the Nakdong River after spending 2–3 weeks at the spawning grounds. The fish inhabited deep pools with low water velocity during the overwintering periods. In comparison, the spawning grounds tended to be located in shallow running water dominated by gravel-beds. This study clarified the habitat use and movement patterns of B. lenok tsinlingensis, contributing useful information toward establishing appropriate conservation and management plans for this threatened species.
Starting Page	225
Ending Page	236
Page Count	12
File Format	PDF
ISSN	03781909
Journal	Environmental Biology of Fishes
Volume Number	98
Issue Number	1
e-ISSN	15735133
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-03-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Brachymystax lenok tsinlingensis Movement Overwintering Spawning ground Habitat Threatened species Freshwater & Marine Ecology Zoology Animal Systematics/Taxonomy/Biogeography Environment Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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