DEEP-WATER POPULATIONS OF LOBOPHORA-VARIEGATA (PHAEOPHYCEAE) ON THE CORAL-REEF OF CURACAO - INFLUENCE OF GRAZING AND DISPERSAL ON DISTRIBUTION PATTERNS

DEEP-WATER POPULATIONS OF LOBOPHORA-VARIEGATA (PHAEOPHYCEAE) ON THE CORAL-REEF OF CURACAO - INFLUENCE OF GRAZING AND DISPERSAL ON DISTRIBUTION PATTERNS
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库拉索岛珊瑚礁上的斑叶藻(褐藻科)深水种群 - 放牧和扩散对分布模式的影响

DOI:
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发表时间:
1987
期刊:
影响因子:
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通讯作者:
A. Breeman
A. Breeman
中科院分区:
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文献类型:
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作者:
ED de Ruyter van Steveninck;A. Breeman

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在珊瑚礁的库拉考(荷属安的列斯群岛)的叶状棕色macrophora Lobophora variegata(Lamouroux)Womersley显示不连续的深度分布,在深藻类群落(30米以下)和eulitteral社区的明显带。这种分布格局是由于在缺乏L.如果不被海胆和草食性鱼类所伤害,这种鱼可以在这里生长一年。放牧压力随深度的增加有明显的下降梯度。在海胆迪亚德马antillarum菲利普,这发生在本研究的过程中,发生大规模死亡后,整体放牧的压力减少。然而,这种“自然实验”并没有导致L的深度范围非常显着地增加。variegata,可能是因为传播的范围是非常有限的。招募只发生在最近的L米。杂色林
On the coral reef of Curacao (Netherlands Antilles) the foliose brown macroalga Lobophora variegata (Lamouroux) Womersley displays a discontinuous depth distribution, with distinct belts in the deep algal community (below 30 m) and in the eulittoral community. This distribution pattern is attributed to high grazing pressure in the areas devoid of L. variegata, where the alga will sumve and grow year-long if protected from sea urchins and herbivorous fish. There was a distinct gradient in grazing pressure decreasing with depth. After the occurrence of mass mortality in the sea urchin Diadema antillarum Philippi, which took place in the course of this study, overall grazing pressure on the alga was reduced. However, this 'natural experiment' did not result in a very marked increase of the depth range of L. variegata, probably because the dispersal range of propagules is very limited. Recruitment only occurred within meters of the nearest L. variegata stand.