IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environme... : Moving distance of field gudgeon, gnathopogon elongatus elongatus, in agricultural canals in japanes...
Moving distance of field gudgeon, gnathopogon elongatus elongatus, in agricultural canals in japanese yatsu-paddy fields
Author : Takeshi Takemura, Noriyuki Koizumi, Atsushi Mori and Keiji Watabe
For freshwater fishes to live out their life history, it is necessary that there are suitable habitats within their home range. However, in modern agricultural canals, their home range is divided by obstructions. And the scale of their home range was unknown. We performed a pursuing survey of field gudgeon in an area of Yatsu paddy fields, in Chiba Prefecture, Japan. Field gudgeon is a common species inhabiting Japanese paddy fields. Our monitoring was conducted for about one year at a few weekly intervals. There might be sedentary individuals and ambulant individuals such as pointed out in past research for various wildlife. Based on our survey most individuals are
expected to be distributed over a space of about a 500 m scale. The space of 500 m may be considered to be one unit for conserving their home range, however, the exact values remain a matter for further research.
File Size : 532,071 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environments
Date Published : 09/08/2009
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