Nutrient Load and Environmental Conditions for Lower Trophic Level Production on a Reef Slope in Miyara Bay, Ishigaki Island, Japan

Japan Agricultural Research Quarterly
ISSN 00213551
NII recode ID (NCID) AA0068709X
Full text
47-04-13.pdf127.86 KB

To elucidate the anthropogenic nutrient load, nitrate + nitrite and phosphate concentrations were measured at an upstream point where there is little tidal change in the Miyara River, Ishigaki Island, Japan. The environmental conditions of lower trophic level production were observed, and factors related to the relatively high coral cover rate were investigated on the reef slope, although there have been heavy loads on the reef flats and inside the reef edge of Miyara Bay. Though the nitrate + nitrite load was always high, the environmental conditions for lower trophic level production were found to be within an appropriate range for coral growth.

Date of issued
Creator SHIMODA Toru FUKUOKA Kouki
Subject

chlorophyll a

coral

nitrate

nitrite

phosphate

Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 47
Issue 4
spage 443
epage 448
DOI 10.6090/jarq.47.443
Rights Japan International Research Center for Agricultural Sciences
Language eng

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