Spartina axil zones: preferred settlement sites of barnacles

Autor: Brenda L. Young
Rok vydání: 1991
Předmět:
Zdroj: Journal of Experimental Marine Biology and Ecology. 151:71-82
ISSN: 0022-0981
DOI: 10.1016/0022-0981(91)90016-p
Popis: Recruitment of the barnacle Chthamalus fragilis Darwin onto cordgrass Spartina alterniflora Loisel. was found to be nonrandom among plant parts. Greater numbers of barnacles per cm 2 were observed in the axils (the crevices formed by the leaf meeting the stem) than on leaves or open stem. Daily settlement and survival were monitored to determine whether differential settlement and/or mortality was responsible for this pattern. On an arcal basis, settlement was 12 times higher into the axils. Mortality was not lower in the axils. Settlement differences appear to be responsible for the greater recruitment in these regions. Removal of newly settled individuals reduced subsequent settlement suggesting that there is a gregarious component to settlement behavior on Spartina .
Databáze: OpenAIRE