Research on the Seasonal Succession of Green Tide and Tolerance of a Causative Seaweed Ulva ohnoi to Low Salinity and Desiccation at the North Pond of Osaka Nanko Bird Sanctuary

• YOSHIMURA Midori

  Osaka City University

• YAMOCHI Susumu

  Osaka City University

Bibliographic Information

Other Title

• 大阪南港野鳥園北池におけるグリーンタイドの季節的変遷と原因海藻ミナミアオサの低塩分・干出耐性に関する研究

Abstract

Field surveys and laboratory experiments were conducted in 2009 to 2010 to examine methods to reduce outbreaks of green tides by Ulva spp. at the north pond of Osaka Nanko bird sanctuary. The green-tide-forming seaweed varied depending on the season, and U. pertusa predominated at the bird sanctuary from early summer to autumn, while U. ohnoi was abundant there from autumn to early spring. The laboratory experiments revealed that exposure of U. ohnoi to air with low salinity inhibited their photosynthesis at 35℃. These results, along with the preceding result of experiments for U. pertusa suggest the possibility of controlling a green tide of U. ohnoi or U. pertusa by a combination of exposure to air for 3-5hours with low salinities of 15-20psu in summer.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 67 (2), I_1136-I_1140, 2011

  Japan Society of Civil Engineers

Keywords

• green tide
• tidal flat
• Ulva
• desiccation
• low salinity

Details

• CRID: 1390282680297599360
• NII Article ID: 130004550390
• DOI: 10.2208/kaigan.67.i_1136
• ISSN: 18838944
• ISSN: 18842399
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed