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Drivers of biodiversity associated with rhodolith beds from euphotic and mesophotic zones: Insights for management and conservation
Perspectives in Ecology and Conservation ( IF 4.0 ) Pub Date : 2020-02-03 , DOI: 10.1016/j.pecon.2019.12.003
Priscila de Cerqueira Veras , Ivan Pierozzi-Jr. , Jaqueline Barreto Lino , Gilberto Menezes Amado-Filho , André Resende de Senna , Cinthya Simone Gomes Santos , Rodrigo Leão de Moura , Flávio Dias Passos , Vinicius José Giglio , Guilherme Henrique Pereira-Filho

Ecologically important marine ecosystems should be identified and protected, as is the case of the poorly known SW Atlantic rhodolith beds. Understanding the main variables predicting biodiversity patterns is essential for determining priority areas for conservation. Here, we analyzed the macroinvertebrate associated with rhodoliths from euphotic and mesophotic zones from the Fernando de Noronha Archipelago investigating the drivers of diversity distribution in this habitat. Rhodoliths were sampled and vagile macroinvertebrates (>500 μm) were classified and quantified. We verified that estimated density of organisms associated with rhodoliths in the euphotic zone was 17 % greater than the mesophotic zone. The communities along depth zones show dissimilarities, suggesting that both environments are ecologically distinct. Comparisons with other ecosystems revealed that rhodolith beds have similar diversity of macroinvertebrates. We also found that four of the six tested variables predicted 85 % of the variability observed in the vagile macroinvertebrate community (i.e. average diameter, depth, biomass of macroalgae and density of rhodoliths in the bed). These variables should be taken into account in future research in modeling the biodiversity associated with the rhodolith beds. This is especially relevant in the SW Atlantic where the rhodolith beds seem to harbor an associated biodiversity greater than previous works had indicated, moreover, they represent one of the main ecosystems that are often superimposed with mining activities.



中文翻译:

来自富营养和中营养区的假山石床相关的生物多样性驱动因素:管理和保护的见解

应该识别和保护具有生态学意义的重要海洋生态系统,如鲜为人知的西南大西洋菱锰矿床就是这种情况。了解确定生物多样性模式的主要变量对于确定优先保护领域至关重要。在这里,我们分析了与费尔南多·德诺罗尼亚群岛富营养和中营养区菱纹石相关的大型无脊椎动物,调查了该生境多样性的驱动因素。采样红景天,对易变的大型无脊椎动物(> 500μm)进行分类和定量。我们证实,在富营养区与菱纹石相关的生物的估计密度比中营养区高17%。沿深度带的群落显示出不同之处,表明这两种环境在生态上都是不同的。与其他生态系统的比较表明,红景天床具有相似的大型无脊椎动物多样性。我们还发现,六个测试变量中的四个预测了在易变的大型无脊椎动物群落中观察到的变化的85%(即,平均直径,深度,大型藻类的生物量和床中菱形石的密度)。在对与菱锰矿床相关的生物多样性进行建模的未来研究中,应考虑这些变量。这在西南大西洋尤为重要,那里的菱纹岩层似乎具有比以前的工作所表明的更大的相关生物多样性,而且,它们代表了经常与采矿活动叠加的主要生态系统之一。我们还发现,六个测试变量中的四个预测了在易变的大型无脊椎动物群落中观察到的变化的85%(即,平均直径,深度,大型藻类的生物量和床中菱形石的密度)。在对与菱锰矿床相关的生物多样性进行建模的未来研究中,应考虑这些变量。这在西南大西洋尤为重要,那里的菱纹岩层似乎具有比以前的工作所表明的更大的相关生物多样性,而且,它们代表了经常与采矿活动叠加的主要生态系统之一。我们还发现,六个测试变量中的四个预测了在易变的大型无脊椎动物群落中观察到的变化的85%(即,平均直径,深度,大型藻类的生物量和床中菱形石的密度)。在对与菱锰矿床相关的生物多样性进行建模的未来研究中,应考虑这些变量。这在西南大西洋尤为重要,那里的菱纹岩层似乎具有比以前的工作所表明的更大的相关生物多样性,而且,它们代表了经常与采矿活动叠加的主要生态系统之一。在对与菱锰矿床相关的生物多样性进行建模的未来研究中,应考虑这些变量。这在西南大西洋尤为重要,那里的菱纹岩层似乎具有比以前的工作所表明的更大的相关生物多样性,而且,它们代表了经常与采矿活动叠加的主要生态系统之一。在对与菱锰矿床相关的生物多样性进行建模的未来研究中,应考虑这些变量。这在西南大西洋尤为重要,那里的菱纹岩层似乎具有比以前的工作所表明的更大的相关生物多样性,而且,它们代表了经常与采矿活动叠加的主要生态系统之一。

更新日期:2020-02-03
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