A Method for Preventing the Outbreak of Green Tides at the Osaka Nanko Bird Sanctuary

• SHIMANAMI Ryo

  Osaka City University

• ENDO Toru

  Osaka City University

• YAMOCHI Susumu

  Osaka City University

Bibliographic Information

Other Title

• 大阪南港野鳥園湿地のグリーンタイド制御に関する一考察

Abstract

Field surveys and laboratory experiments were carried out to prevent the outbreak of green tides at the north pond of Osaka Nanko bird sanctuary. Dense blooms of green algae, Ulva pertusa, Ulva ohnoi and Rhizoclonium riparium were frequently observed in 2005-2012 and the most dominant species gradually changed from Ulva pertusa to Ulva ohnoi, which is partly due to temperature increase and low salinity at a growing season. Laboratory experiments revealed that photosynthesis was inhibited when they were exposed to air for 6 hours at 35°C followed by a low salinity of 20psu. These results suggest the possibility of controlling green tides of Ulva pertusa and Ulva ohnoi by a combination of exposure to air with low salinity 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) 69 (2), I_1161-I_1165, 2013

  Japan Society of Civil Engineers

Keywords

• green tide
• ulva ohnoi
• artificial salt marsh
• macro benthic animals
• tolerance of desiccation

Details

• CRID: 1390282680297046528
• NII Article ID: 130004550980
• DOI: 10.2208/kaigan.69.i_1161
• ISSN: 18838944
• ISSN: 18842399
• ISSN: http://id.crossref.org/issn/18838944
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed