지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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The stress tolerance ability of Pelvetia canaliculata (L.) Dcne. Et Thur. and Fucus spiralis L. to temporary and periodic emersion stress was examined in order to test the following hypotheses: The upper shore alga, P. canaliculata is more tolerant to desiccation than F. spiralis in the germling stage and the former outgrows the latter under desiccation stress; Germling stress tolerance of the two species is age-specific; Crowding of germlings protects them from desiccation, irrespective of the species involved. Germling growth of the two species was retarded with increasing exposure period and was age-specific, as they were air-exposed at an earlier stage. After 16 days, the length of Pelvetia germlings was similar between 2-day-old germlings (125-140 ${\mu}m$) and 7-day-old germlings (134-140 ${\mu}m$), which were air-exposed during the same period (0, 6, 12, 24, 48, and 72 h) at the two different ages. However, Fucus germlings were significantly larger at 7-day-old germlings (211-277 ${\mu}m$) than at 2-day-old germlings (184-278 ${\mu}m$), especially in the treatments of 48 and 72 h. These results indicate that Fuscus grow faster than Pelvetia and that the growth response of germlings to temporary emersion stress is more sensitive in Fucus than that in Pelvetia. Growth of germlings of both species was reduced with increasing density under favorable growth conditions (submerged control and 6 h / 12 h exposure treatments) in the periodic air-exposed experiments using tidal tanks, but was enhanced under severe emersion stress conditions. P. canaliculata showed better growth at 6 h exposure treatment than that of the control, under continuous submergence, indicating that Pelvetia germlings require a periodic exposure period. Fucus germlings always grew faster than those of Pelvetia and did best in mixed cultures, whereas Pelvetia did least well when mixed with Fucus germlings. The adverse effects of F. spiralis on P. canaliculata were greater than those of Pelvetia cohorts. The outcome of interspecific competition between F. spiralis and P. canaliculata gemlings was slightly altered by exposure period but not to such an extent as to change the outcome.
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참고문헌 (29)
참고문헌 신청
Andrew, N. L. / 1998 / Effects of wave exposure and intraspecific density on the growth and survivorship of Sargassum muticum (Sargassaceae: Phaeophyta) / Eur. J. Phycol 33:251~258
Ang, P. O. / 1992 / Density-dependence in a population of Fucus distichus / Mar. Ecol. Prog. Ser 90:169~181
Brawley, S. H. / 1991 / Survival of fucoid embryos in the intertidal zone depends upon developmental stage and microhabitat / J. Phycol 27:179~186
Chapman, A. R. O. / 1995 / Functional ecology of fucoid algae: twenty-three years of progress / Phycologia 34:1~32
Choi, H. G. / 2005 / Competitive interactions between two fucoid algae with different growth forms, Fucus serratus and Himanthalia elongata / Mar. Biol 146:283~291
Ang, P. O. / 1992 / Density-dependence in a population of Fucus distichus / Mar. Ecol. Prog. Ser 90:169~181
Brawley, S. H. / 1991 / Survival of fucoid embryos in the intertidal zone depends upon developmental stage and microhabitat / J. Phycol 27:179~186
Chapman, A. R. O. / 1995 / Functional ecology of fucoid algae: twenty-three years of progress / Phycologia 34:1~32
Choi, H. G. / 2005 / Competitive interactions between two fucoid algae with different growth forms, Fucus serratus and Himanthalia elongata / Mar. Biol 146:283~291
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