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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1998.8
- 수록면
- 401 - 419 (19page)
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The structure of benthic algal flora and feeding behavior of sea urchins (Anthocidaris crassispina and Hemicentrotus pulcherrimus), were investigated from the eight different locations along the coast of Cheju Island, Korea. Biomass distribution and dominance of the algal communities were studied in relation to the gut contents and population parameters of the sea urchins. As a result, although the largest algal biomass was observed at Daepo, there were no positive relationships between the algal biomass and biological characteristics of sea urchins, such as test diameter, test height, body weight, gonad weight, etc. This indicated that sea urchins would not be dependent sorely on the abundance of algal foods, and they might feed on other food items. In order to know such a trend with regard to food selectivity, the diets consumed by sea urchins were analyzed, and it was found that they were composed of benthic and drifted algae, various animal components (sponges, bryozoans, crustaceans, and various unidentified capsulated eggs, etc.) and bottom substrates (mud and sand). As the amount and relative proportion of benthic algal diets turned out to be smaller than might be expected, and it is postulated that sea urchins were not likely to be the major grazing animals for the formation of algal bed and also canopy deterioration, so-called "white incrustation."
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UCI(KEPA) : I410-ECN-0101-2009-529-015345536