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The Survey Data of Benthic Diatoms in Anping historical waterview park

Citation

Lee L (2020). The Survey Data of Benthic Diatoms in Anping historical waterview park. Version 1.6. Taiwan Biodiversity Research Institute. Sampling event dataset https://doi.org/10.15468/mwzwls accessed via GBIF.org on 2025-06-22.

Description

The dataset provide the records of benthic diatoms attached on the diatom boards which were set on the artificial floating islands (AFIs) established on seawater in Anping Historical Waterview Park in Tainan, Taiwan. Diatoms were cultured with diatom boards and sampled four times from October to December of 2017. A total of 45 diatom species belonging to 22 genera were identified. Among them, the Navicula genus has the largest richness, and Achnanthes subsessilis and Nitzschia longissima were the dominant species in number.

Sampling Description

Study Extent

The Anping Historical Waterview Park in Tainan, Taiwan, (120°15'21.81'' E, 22°00'00.84'' N) served as the sampling location for this study.

Sampling

1.Culture of benthic diatoms Eight diatom boards (transparent acrylic boards measuring 15 × 15 cm²) were placed on each of the three AFIs on October 16, 2017. Subsequently, sampling processes were conducted on October 23, October 31, November 20, and November 30, 2017, with the culture period being 7, 15, 35, and 45 days, respectively. 2.Sampling of benthic diatoms On each sampling date, two of the diatom boards were removed from the AFIs; specifically, a total of six boards were retrieved on each sampling session. The retrieved boards were covered with tin-foil paper for shading, after which they were sent to the laboratory under refrigeration. The benthic diatoms were then scraped off using toothbrushes. 3.Sampling of planktonic diatoms For comparison with the benthic diatoms, this study sampled the water near the Historical Waterview Park regions in which the diatom boards were placed. The collected water samples were subjected to centrifugation, acid washing, and fixation in the laboratory. Subsequently, observation and identification processes were conducted on the water samples.

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. Achnanthes
    rank: genus
  2. Achnanthidium
    rank: genus
  3. Planothidium
    rank: genus
  4. Nitzschia
    rank: genus
  5. Psammodictyon
    rank: genus
  6. Biddulphia
    rank: genus
  7. Amphora
    rank: genus
  8. Cocconeis
    rank: genus
  9. Campylosira
    rank: genus
  10. Diploneis
    rank: genus
  11. Encyonema
    rank: genus
  12. Licomophora
    rank: genus
  13. Gyrosigma
    rank: genus
  14. Haslea
    rank: genus
  15. Navicula
    rank: genus
  16. Seminavis
    rank: genus
  17. Plagiotropis
    rank: genus
  18. Pleurosigma
    rank: genus
  19. Gomphonemopsis
    rank: genus
  20. Skeletonema
    rank: genus
  21. Cyclotella
    rank: genus
  22. Thalassiosira
    rank: genus

Geographic Coverages

The Anping Historical Waterview Park in Tainan, Taiwan, (120°15'21.81'' E, 22°00'00.84'' N) served as the sampling location for this study. The park has a water area of approximately 6 km² and water depth of 3 m. The southern portion of the park is connected to the Anping harbor area and the Tainan Canal; the northern portion comprises the Yanshui River basin and estuary.

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.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
position: 副研究員
行政院農業委員會特有生物研究保育中心
南投縣
TW
email: edo0718@yahoo.com.tw
Li-hua Lee
metadata author
position: 副研究員
行政院農業委員會特有生物研究保育中心
南投縣
TW
email: edo0718@yahoo.com.tw
Li-hua Lee
administrative point of contact
position: 副研究員
行政院農業委員會特有生物研究保育中心
南投縣
TW
email: edo0718@yahoo.com.tw
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