EFFECTS OF SALINITY ON THE DISTRIBUTION OF FUCUS-CERANOIDES

被引:27
作者
KHFAJI, AK
NORTON, TA
机构
[1] Department of Botany, University of Glasgow, Glasgow
来源
ESTUARINE AND COASTAL MARINE SCIENCE | 1979年 / 8卷 / 05期
关键词
estuarine flora; fucales; Isle of Man; salinity variations;
D O I
10.1016/0302-3524(79)90060-4
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The success of the brown seaweed Fucus ceranoides L. in estuaries and its absence from fully marine situations was investigated by means of culture experiments in the laboratory and transplantation experiments in the Silverburn Estuary, Isle of Man. The responses of F. ceranoides were compared with those of F. vesiculosus L. a potential competitor in marine conditions. Germlings of F. ceranoides developed from zygotes and grew at all salinities from 34‰ down to 8·5‰. Those of F. vesiculosus did not survive below 24‰ if settled directly at these low salinities, but grew over the same range of salinity as F. ceranoides if initially cultured at 34‰ for 48 h. Tips detached from young adult plants of F. ceranoides displayed a wider tolerance range than the germlings and grew slowly even at a salinity of only 1‰. Both the germlings and adult plants of F. ceranoides grew faster than those of F. vesiculosus at all salinities from 17‰ downwards, but F. vesiculosus was the faster grower at full salinity. p F. ceranoides plants eventually decayed if cultured at, or transplanted into full salinity, but not if at reduced salinity. In contrast, F. vesiculosus decayed in very brackish water but remained healthy at full salinity. Clearly the distribution of both species can be limited by extremes of salinity, but, whereas for F. vesiculosus low salinity is unfavourable, for F. ceranoides it is high salinity that presents the most stress. © 1979.
引用
收藏
页码:433 / 439
页数:7
相关论文
共 9 条
  • [1] BOYLE M, 1949, BIOL BULL, V97, P232
  • [2] BURROWS EM, 1964, P INT SEAWEED S, V4, P166
  • [3] Gessner F, 1971, MARINE ECOLOGY, VI, P705
  • [4] HOFFMAN C, 1959, C INT CENT NAT RECH, V81, P205
  • [5] CULTURE OF 4 SPECIES OF FUCUS UNDER LABORATORY CONDITIONS
    MCLACHLAN, J
    CHEN, LCM
    EDELSTEIN, T
    [J]. CANADIAN JOURNAL OF BOTANY, 1971, 49 (08): : 1463 - +
  • [6] MENGE JL, 1975, THESIS U HARVARD, P1
  • [7] CHEMICAL COMPOSITION AND PHYSIOLOGICAL PROPERTIES OF FUCOIDS UNDER CONDITIONS OF REDUCED SALINITY
    MUNDA, IM
    KREMER, BP
    [J]. MARINE BIOLOGY, 1977, 42 (01) : 9 - 15
  • [8] EFFECTS OF BRIEF PERIODIC SUBMERGENCE ON INTER-TIDAL FUCOID ALGAE
    SCHONBECK, M
    NORTON, TA
    [J]. ESTUARINE AND COASTAL MARINE SCIENCE, 1979, 8 (03): : 205 - 211
  • [9] Strickland J D H, 1968, PRACTICAL HDB SEAWAT, P1