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Survey of Plankton Diatoms in Nanren Lake

Dataset homepage

Citation

Lee L (2020). Survey of Plankton Diatoms in Nanren Lake. Version 1.4. Taiwan Endemic Species Research Institute. Sampling event dataset https://doi.org/10.15468/d1crnx accessed via GBIF.org on 2023-09-24.

Description

This study surveyed the plankton diatoms in Nanren Lake, Kenting National Park, Pingtung County, Taiwan. A total of 29 species of 21 genera were identified, and most species belonged to the Eunotia and Nitzschia genera. However, Aulacoseira granulata and Discostella stelligera were the dominant species.

Sampling Description

Study Extent

Nanren Lake is located in the Nanren Mountain Ecological Protection Area in northeastern Kenting National Park on the east coast of the Hengchun Peninsula. The geographic position is 22°50’N and 120°50’E. The altitude of the nearby Nanren Mountain to the west of Nanren Lake is 479 m, categorized as low-altitude highland. The Central Water Body of Nanren Lake was originally paddy fields and wetlands. Local residents moved away because of the hardship of making a living there. In 1982, the only outlet of the water body, Hongtu Stream, became clogged, and water stagnated to form the current Nanren Lake. According to a survey conducted in 1990, the area of the lake at that time was 22.54 ha

Sampling

Plankton diatoms collection was performed on January 18, 2018. The sampling sites were the Ancient Nanren Lake (St1), west side of the main lake (St2), and east side of the main lake (St3), as illustrated in Fig. 1. From each site, 500 mL of lake water was collected and transported to the laboratory for observation and species identification.

Method steps

  1. All the diatom fluids were first concentrated in a centrifugal machine for 10 minutes at 3,500 rpm; the fresh diatoms were then observed using a differential interference contrast microscope. Subsequently, acid washing was conducted using concentrated sulfuric acid, after which observation and identification processes were performed using an electron microscope.

Taxonomic Coverages

  1. Aulacoseira granulata
    rank: species
  2. Brachysira vitrea
    rank: species
  3. Burliganiella siolii
    rank: species
  4. Cyclotella atomus
    rank: species
  5. Cymbella novazeelandiana
    rank: species
  6. Diploneis oblongella
    rank: species
  7. Discostella stelligera
    rank: species
  8. Encyonema gracile
    rank: species
  9. Eunotia camelus
    rank: species
  10. Eunotia rabenhorstii var. monodon
    rank: species
  11. Eunotia subarcuatoides
    rank: species
  12. Eunotia yberai
    rank: species
  13. Frustulia rhomboides
    rank: species
  14. Geissleria decussis
    rank: species
  15. Gomphonema archaevibrio
    rank: species
  16. Gyrosigma scalproides
    rank: species
  17. Luticola goeppertiana
    rank: species
  18. Navicula leptostriata
    rank: species
  19. Navicula sp.
    rank: species
  20. Nitzschia alpina
    rank: species
  21. Nitzschia nana
    rank: species
  22. Nitzschia palea
    rank: species
  23. Nitzschia subacicularis
    rank: species
  24. Pinnularia brauniana
    rank: species
  25. Pinnularia subgibba
    rank: species
  26. Sellaphora pupula
    rank: species
  27. Stauroneis anceps
    rank: species
  28. Stenopterobia curvula
    rank: species
  29. Surirella sp.
    rank: species

Geographic Coverages

Located in the Nanren Mountain Ecological Protection Area in the northeastern part of Kenting National Park, Nanren Lake comprises three permanent lakes: the Central Water Body, Independent Nanren Lake, and Yilan Lake (or Ancient Nanren Lake). The natural freshwater lake is formed of rainwater and spring water and is the largest static ecological water system in Nanren Lake.

Bibliographic Citations

  1. 1.Round F. E., Crawford R. M. and D.D. Mann. 1996. The diatoms, biological and morophology of the genera. Published by Camberidge Univ. Press. -
  2. 2.Wu J. T., Babu B., Chou C. L. and S. J. Saraswathi. 2011. Freshwater Diatom Flora of Taiwan. Biodiversity Research Center, Academia Sinica. -

Contacts

Li-Hua Lee
originator
Taiwan Endemic Species Research Institute
TW
email: edo0718@yahoo.com.tw
Li-hua Lee
metadata author
Taiwan Endemic Species Research Institute
TW
email: edo0718@yahoo.com.tw
Li-Hua Lee
point of contact
Taiwan Endemic Species Research Institute
TW
email: edo0718@yahoo.com.tw
Li-Hua Lee
administrative point of contact
Taiwan Endemic Species Research Institute
TW
email: edo0718@yahoo.com.tw
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