Ecological Research

, Volume 32, Issue 6, pp 783–783 | Cite as

Phytoplankton species abundance in Lake Inba (Japan) from 1986 to 2016

  • Akemi Iwayama
  • Hisako Ogura
  • Yukio Hirama
  • Chun-Wei Chang
  • Chih-hao Hsieh
  • Maiko Kagami
Special Feature: Data Paper Filling the gaps

Abstract

Lake Inba is one of the most eutrophic lakes in Japan. This data paper reports the abundance of phytoplankton species sampled biweekly from April 1986 to March 2016 at four stations in Lake Inba. Monitoring has been carried out by Chiba Prefectural Government, and phytoplankton count data have been collected since 1986. A total of 340 phytoplankton species were identified and enumerated by microscopy, as numbers of cells or colonies. The abundance of each species was expressed as cells per milliliter lake water. Total cell density ranged from 102 to 108 cells ml−1. The dominant cell class density was Cyanobacteria throughout the year. Cyanobacteria, such as Phormidium spp., Microcystis aeruginosa, and Anabaena spp. (Dolicospermum spp.), were the most dense in all months. The dominant cyanobacteria species reached concentrations of 107 cells ml−1. Diatoms, such as Aulacoseira granulata and A. ambigua, were also abundant, reaching 106 cells ml−1. These data can be used to appreciate how anthropogenic disturbances, such as eutrophication and global warming, affect density and community composition of phytoplankton.

Keywords

Lake Inba Phytoplankton Eutrophication Algal bloom Diatom Cyanobacteria Seasonal succession Long-term monitoring 

Ecological Research Data Paper Archives http://db.cger.nies.go.jp/JaLTER/ER_DataPapers/

Accession number: ERDP-2017-04

Copyright information

© The Ecological Society of Japan 2017

Authors and Affiliations

  • Akemi Iwayama
    • 1
  • Hisako Ogura
    • 1
  • Yukio Hirama
    • 1
  • Chun-Wei Chang
    • 2
    • 3
  • Chih-hao Hsieh
    • 2
    • 4
    • 5
    • 6
    • 7
  • Maiko Kagami
    • 8
  1. 1.Chiba Prefectural Environmental Research CenterChibaJapan
  2. 2.Taiwan International Graduate Program (TIGP)-Earth System Science Program, Academia SinicaTaipeiTaiwan
  3. 3.Taiwan International Graduate Program (TIGP)-Earth System Science Program, National Central UniversityTaoyuanTaiwan
  4. 4.Institute of Oceanography, National Taiwan UniversityTaipeiTaiwan
  5. 5.Research Center for Environmental Changes, Academia SinicaTaipeiTaiwan
  6. 6.Department of Life ScienceInstitute of Ecology and Evolutionary Biology, National Taiwan UniversityTaipeiTaiwan
  7. 7.National Center for Theoretical SciencesTaipeiTaiwan
  8. 8.Department of Environmental Science, Faculty of ScienceToho UniversityFunabashiJapan

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