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首页> 外文期刊>Estuarine Coastal and Shelf Science >Greater multihabitat use in Caribbean fishes when compared to their Great Barrier Reef counterparts
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Greater multihabitat use in Caribbean fishes when compared to their Great Barrier Reef counterparts

机译：与他们的伟大障碍礁相比，加勒比海鱼类在加勒比鱼类中使用更大的多藏宝

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Organisms often utilise different habitats for different reasons, whether it be for acquiring resources, avoiding predation or for reproduction. In coastal tropical ecosystems, coral reefs, seagrass beds and mangrove forests frequently occur in a complex mosaic of intermixed habitats. One of the most commonly identified links between these habitats is the nursery function; that some fish species utilise mangroves and seagrass as juveniles before moving onto reefs as adults. We investigated whether this potential link between habitats is reflected in the similarity of their fish assemblages and if this similarity differs between major biogeographic realms. Visual surveys in the three focal habitats in the Caribbean and on the Great Barrier Reef (GBR) provided assemblage composition data. We found a near ten-fold increase in the percentage of species that occupy all three habitats in the Caribbean when compared to the GBR. When only assessing species that occurred in multiple habitats, the Caribbean displayed strong shifts linked to ontogeny and greater abundances of multihabitat species, supporting the proposed nursery function. GBR assemblages remained more distinct regardless of ontogeny, offering little support for the nursery function. Most multihabitat species in the Caribbean reach larger adult body sizes (= 30 cm, e.g. Haemulon flavolineatum) vs. smaller bodied (30 cm, e.g. Halicheores miniatus) fishes on the GBR. When placed in this context, Caribbean species have a greater capacity to move and utilise more habitats compared to the limited movement from the smaller GBR species. The Caribbean and GBR therefore differ not only in the extent of species overlap between the three habitats, but also in the level of ontogenetic connectivity. It is likely that biogeographic history, evolution and tides, amongst other factors, influence these patterns.
机译：有机体经常出于不同的原因利用不同的栖息地，无论是为了获取资源，避免捕食或再现。在沿海热带生态系统中，珊瑚礁，海草床和红树林经常发生在混合栖息地的复杂马赛克中。这些栖息地之间最常用的链接之一是托儿所;一些鱼类使用红树林和海草作为少年，然后搬到珊瑚礁作为成年人。我们调查了栖息地之间的这种潜在联系是否反映在其鱼组合的相似性中，并且如果这种相似性不同于主要的生物地理领域。在加勒比海和大堡礁（GBR）上的三个焦点栖息地的视觉调查提供了组合组成数据。与GBR相比，我们发现占据了加勒比地区所有三种栖息地的物种百分比的近倍数。当仅评估多种栖息地发生的物种时，加勒比地区显示出与群体和更多的多藏宝物种丰富的强烈变化，支持提出的苗圃功能。无论组来的内容如何，​​GBR组合都仍然变得更加截然不同，为托儿所提供了很少的支持。加勒比地区中大多数多藏宝物种达到较大的成年体尺寸（> = 30厘米，例如血培尔仑的Flavolinumeatum）与GBR上的较小的身体（<30cm，例如Halicheores miniatus）鱼类。当放置在这种情况下，与来自较小GBR种类的有限运动相比，加勒比地区的含量更大才能移动和利用更多的栖息地。因此，加勒比地区和GBR不仅在三种栖息地之间重叠的物种的程度，而且在组织内连接的程度上不同。在其他因素中，生物地理历史，进化和潮汐可能会影响这些模式。

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