Data Set Citation:
When using this data, please cite the data package:
Takamura N , Nakagawa M , and Hanazato T.
Zooplankton abundance in the pelagic region of Lake Kasumigaura (Japan): Monthly data since 1980
ERDP-2016-06.1.2 (http://db.cger.nies.go.jp/JaLTER/metacat/metacat/ERDP-2016-06.1.2/jalter-en)
General Information:
Title:Zooplankton abundance in the pelagic region of Lake Kasumigaura (Japan): Monthly data since 1980
Identifier:ERDP-2016-06.1.2
Abstract:
Microscopic crustaceans (cladocerans and copepods) and rotifers are the principal zooplankton components of the pelagic food webs in lakes. They play important ecological roles, functioning as essential links between primary producers and planktivorous fish. Individuals zooplankton are important nodes of matter flow in pelagic ecosystems. The zooplankton community structure can provide useful indicators of top-down processes, such as the magnitude or strength of planktivorous predators and the extent of zooplankton grazing. Here we report the abundance of zooplankton taxa (crustaceans and rotifers) that were recorded monthly, from January 1980 to September 2015, at two stations on Lake Kasumigaura, a shallow eutrophic lake that is the second largest lake in Japan. The data include information on 12 copepod species (taxa), 20 cladoceran species (taxa), 40 rotifer species (taxa), and the opossum shrimp (Neomysis intermedia). In the 1980s, the plankton of the lake were characterized by cyanobacterial blooms and the co-dominance of Bosmina and Diaphanosoma in the summer. In addition, the two cladoceran genera, Daphnia galeata and Chydorus sphaericus were often prominent. The plankton profile changed dramatically in the middle (1997–2004) of the present long-term monitoring period, when cyanobacteria disappeared and diatoms became dominant even in the summer; concurrently, only the Diaphanosoma cladocerans were evident. However, in the past 10 years , cyanobacterial blooms, the co-dominance of Bosmina and Diaphanosoma, and D. galeata have re-emerged. Zooplankton monitoring forms part of the Lake Kasumigaura Long-Term Environmental Monitoring Program, which has been conducted by the National Institute for Environmental Studies (NIES) since 1977. Data on other planktonic components (phytoplankton and the elements of microbial food webs) noted during monitoring and on primary production were published in Takamura and Nakagawa (2012ab; 2016). Lake Kasumigaura is a core site of the Japan Long-term Ecological Research Network, a member of the International Long-term Ecological Research Network. Our quantitative dataset spanning several decades is unique in terms of the work on lakes and the plankton therein, and is freely available. The dataset has been used in ecological and environmental programs, as well as in studies on lake management.
Keywords:
  • Crustacea
  • Rotifera
  • Mysida
  • Pelagic ecosystem
  • Zooplankton
  • Long-term monitoring
  • Eutrophication
  • Lake Kasumigaura
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Data Table:Kasumi_Crustacea.csv ( View Metadata | Download File download)
Data Table:Kasumi_Mysida.csv ( View Metadata | Download File download)
Data Table:Kasumi_Rotifer.csv ( View Metadata | Download File download)
Data Table:TaxonList.csv ( View Metadata | Download File download)

Involved Parties

Data Set Owners:
Individual: Noriko Takamura
Organization:National Institute for Environmental Studies
Address:
Onogawa 16-2,
Tsukuba, Ibaraki 305-8506 Japan
Phone:
+81-298-50-2471 (voice)
Phone:
+81-298-50-2577 (fax)
Email Address:
noriko-t@nies.go.jp
Individual: Megumi Nakagawa
Organization:National Institute for Environmental Studies
Address:
Onogawa 16-2,
Tsukuba, Ibaraki 305-8506 Japan
Phone:
+81-298-50-2415 (voice)
Phone:
+81-298-50-2577 (fax)
Email Address:
nakagawa.megumi@nies.go.jp
Individual: Takayuki Hanazato
Organization:Division of Science for Inland Water Environment, Institute of Mountain Science, Shinshu University
Data Set Contacts:
Individual: Megumi Nakagawa
Organization:Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies
Address:
Onogawa 16-2,
Tsukuba, Ibaraki 305-8506 Japan
Phone:
+81-298-50-2471 (voice)
Email Address:
cebes.data@nies.go.jp
Individual: Noriko Takamura
Organization:Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies
Address:
Onogawa 16-2,
Tsukuba, Ibaraki 305-8506 Japan
Phone:
+81-298-50-2471 (voice)
Email Address:
cebes.data@nies.go.jp

Data Set Characteristics

Geographic Region:
Geographic Description:Station 3
Bounding Coordinates:
West:  140.377533  degrees
East:  140.377533  degrees
North:  36.1217  degrees
South:  36.1217  degrees
Geographic Region:
Geographic Description:Station 9
Bounding Coordinates:
West:  140.4037  degrees
East:  140.4037  degrees
North:  36.0357  degrees
South:  36.0357  degrees
Time Period:
Begin:
1980-01-23
End:
2015-09-11

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:
Description:

You can see detailed information on http://db.cger.nies.go.jp/JaLTER/ER_DataPapers/archives/2016/ERDP-2016-06/metadata

Data Set Usage Rights

1) Acceptable use. The dataset should not be used for any illegal purpose or to violate the rights of others. Dataset usage should be restricted to academic, research, educational, government, or other not-for-profit professional purposes. Data users need to agree to the terms of use for NIES Lake Kasumigaura Database (http://db.cger.nies.go.jp/gem/moni-e/inter/GEMS/database/kasumi/contents/terms.html). Please make sure to contact the data manager of Lake Kasumigaura Database by email (cebes.data@nies.go.jp) before using the dataset. 2) Citation. Data use should appropriately cite the present paper in all of the publications or when citing metadata derived using our data. As our metadata may be updated at any time, the date of the update cited should be shown in the bibliography. 3) Acknowledgements. To support our long-term monitoring, all of the data users should include the following text in any publications using the dataset: “The XXX data are those of the Lake Kasumigaura Long-term Environmental Monitoring Program of the National Institute for Environmental Studies, Japan.” 4) Notification. Data users should notify the nominated Dataset Contact when any derivative work or publication based on or derived from the dataset is contemplated. The Dataset Contact requires two reprints or a PDF file of any publication using dataset details. 5) Collaboration. Data users are strongly encouraged to consider consultation, collaboration, and/or co-authorship with data owners. 6) Disclaimer. In no event shall any author, data owner, or the National Institute for Environmental Studies be liable for loss of profit or for any indirect or incidental damages arising from data use or interpretation.
Access Control:
Auth System:JaLTER
Order:allowFirst
Allow: [read] public
Metadata download: Ecological Metadata Language (EML) File