Data Set Citation:
When using this data, please cite the data package:
Hikaru N.
A data set of long-term observation of aquatic vertebrates and associate environmental factors in a temperate stream, the Yura River, Kyoto, Japan
ERDP-2018-07.1.1 (http://db.cger.nies.go.jp/JaLTER/metacat/metacat/ERDP-2018-07.1.1/jalter-en)
General Information:
Title:A data set of long-term observation of aquatic vertebrates and associate environmental factors in a temperate stream, the Yura River, Kyoto, Japan
Identifier:ERDP-2018-07.1.1
Abstract:
The population dynamics of fishes are strongly affected by habitat characteristics, which are constantly changing due to seasonal and interannual variations in climatic, hydrological, and geographical processes. Seasonal and interannual variations in hydrological events directly affect the movement, growth, and mortality of stream fishes, and indirectly affect their population density and standing crop through changes in local-scale habitat structures. Characteristics of local-scale habitats directly affects on availability of foods, shelters, spawning sites, and interspecific interactions of stream fishes. Therefore, long-term data regarding the local-scale dynamics of habitat characteristics and its use by fish species over a few generations or longer would need for understanding the mechanism of the determinant process of fish population dynamics. When investigating the effects of habitat changes due to natural processes on the long-term dynamics of fish populations, removal of artificial influences such as changes in land use, dam constructions and channelization of riverrines is often problematic. Thereby, sampling sites where long-term observation of non-artificial changes in stream fish populations and habitats are very valuable. Here, I report the long-term seasonal and annual changes in stream fish populations and their habitat characteristics based on 75 snorkeling observations of fishes and environmental measurements in the upper reaches of the Yura River at Ashiu Research Forest, which has a 36.5-km2 catchment area with very little artificial disturbance, from May 2007 to June 2018. Snorkeling observations were conducted using the line-transect method during the day and at night, and microhabitat characteristics (water depth, current velocity, substratum characteristics, and presence/absence of cover) were determined for all individuals observed. A total of 56,042 individuals were observed, belonging to 17 fish and 7 other aquatic vertebrate species. These data may be used to examine the effects of habitat change on the processes that determine fish populations.
Keywords:
  • amphibians
  • assemblage
  • line-transect
  • long-term
  • microhabitat
  • snorkeling
  • stream environment
  • stream fish
  • underwater observation

Involved Parties

Data Set Owners:
Individual: Nakagawa Hikaru
Organization:Field Science Education and Research Center, Kyoto University
Address:
1 Onojya, Miyama,
Natan, Kyoto Japan
Phone:
601-0703 (voice)
Email Address:
hikarunakagwa@icloud.com
Data Set Contacts:
Individual: Nakagawa Hikaru
Organization:Field Science Education and Research Center, Kyoto University
Address:
1 Onojya, Miyama,
Natan, Kyoto Japan
Phone:
601-0703 (voice)
Email Address:
hikarunakagwa@icloud.com

Data Set Characteristics

Geographic Region:
Geographic Description:Upper reaches of Yura River, Ashiu Forest Research Station of the Kyoto University Field Science Education and Research Center, Japan
Bounding Coordinates:
West:  135.71861  degrees
East:  135.71861  degrees
North:  35.30722  degrees
South:  35.30722  degrees
Time Period:
Begin:
2007-05-01
End:
2018-06-30

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:
Description:

The detailed information about methods can be seen on http://db.cger.nies.go.jp/JaLTER/ER_DataPapers/archives/2018/ERDP-2018-07/metadata

Data Set Usage Rights

This dataset is provided under a Creative Commons Attribution 4.0 International License (CC BY 4.0; https://creativecommons.org/licenses/by/4.0/legalcode).
Access Control:
Auth System:JaLTER
Order:allowFirst
Allow: [read] public
Metadata download: Ecological Metadata Language (EML) File