Faunal zonation and assemblages in the Pacific Colombian mangroves
Faunal zonation and assemblages in the Pacific Colombian mangroves
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DOI：
10.1023/a:1003890826741
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发表时间：
1999-01-01
期刊：
影响因子：
2.6
通讯作者：
Arnaud, PM
中科院分区：
文献类型：
--
作者：
Cantera, JR;Thomassin, BA;Arnaud, PM
比较了哥伦比亚太平洋沿岸马拉加湾和布埃纳文图拉湾两个红树林地区的树木和海洋伴生动物的地带性。这些海湾面临着巨大的陆源输入、充足的降雨、高潮差，以及后者的森林砍伐、城市和工业污染。大型底栖动物组合的垂直分布受湿度和潮汐梯度的影响。这些组合与各种底质(芒果底质：树冠、树干和树根；伴生土壤底质：或多或少堵塞和泥沙；凋落物)和潮汐特征有关。由于它们的具体组成更多地取决于每一物种的行为(暴露在空气中、取食、繁殖……)，因此，分区似乎更多的是数量而不是定性，相同的物种经常出现在不同的区域或亚区。基本上，在两个海湾都观察到了类似的组合。它们可以通过限制在特定土壤条件下的物种在当地得到丰富，例如马拉加的砾石泥滩和岩石，以及布埃纳文图拉的潮间带小溪和流水，在这些地方，它们受到适度人类影响的影响相对较小。
The zonations of trees and marine associated fauna of two mangrove areas of the Pacific coast of Colombia, Malaga and Buenaventura bays, are compared. These bays are exposed to huge terrigeneous inputs, abundant rainfall, high tidal range and, for the later, to deforestation, urban and industrial pollution. Vertical distribution of the macrofaunal assemblages is under the influences of wetness and tidal gradients. These assemblages are associated with the various substrates (mangal substrates: canopy, trunks and roots; associated soil substrates: more or less clogged and muddy sands; litter) and with the tidal features. As their specific composition is more dependent on the ethology of each species (air-exposure, feeding, reproduction...), the zonation appears more quantitative than qualitative, the same species occurring frequently in different zones or subzones. Basically, similar assemblages are observed in the two bays. They can be locally enriched by species restricted to particular edaphic conditions such as gravelly muddy flats and rocks at Malaga, and intertidal creeks and running waters at Buenaventura, where they are relatively less influenced by moderate human impacts.