Effect of nutrient concentration and salinity on diel vertical migration ofChattonella marina(Raphidophyceae)

Autor:	Souichi Yamaguchi, Toshiya Katano, Masumi Koriyama, Yuichi Hayami, Takaharu Hamada, Kenji Yoshino, Makoto Yoshida
Rok vydání:	2014
Předmět:	education.field_of_study Chattonella Ecology Population Aquatic Science Biology Oceanography biology.organism_classification Algal bloom Salinity Nutrient Aquatic science Bloom education Diel vertical migration Ecology Evolution Behavior and Systematics
Zdroj:	Marine Biology Research. 10:1007-1018
ISSN:	1745-1019 1745-1000
DOI:	10.1080/17451000.2013.879987
Popis:	Vertical migration plays an important role in the development of Chattonella populations in the natural environment; however, this behaviour has remained largely undescribed. In the present study, the diel vertical migration of Chattonella marina in the Ariake Sea was examined along with nutrient concentrations and salinity at four sampling sites during the bloom in the summers of 2008, 2009 and 2010. Cells of Chattonella were abundant at the surface (0 m depth) in the daytime in most cases. However, when surface salinity was 9, which is the lower limit for growth, the population accumulated at a depth of 2 m, where salinity was 15, suggesting that Chattonella moves to avoid water with low salinity. Chattonella cells actively migrated, even under nutrient-replete conditions (mean DIN concentration, 12.73 µM). The present study demonstrates that Chattonella cell migration is independent of nutrient availability. In addition, Chattonella cells stop upward migration when the surface salinity is low (...
Databáze:	OpenAIRE
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