当前位置: X-MOL 学术Harmful Algae › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Habitat effects on Ostreopsis cf. ovata bloom dynamics
Harmful Algae ( IF 6.6 ) Pub Date : 2018-10-05 , DOI: 10.1016/j.hal.2018.09.006
L. Meroni , M. Chiantore , M. Petrillo , V. Asnaghi

In the last few decades, Ostreopsis spp., toxic benthic dinolagellates of tropical origin, generated large interest in the Mediterranean Sea, where several bloom events have been observed. Ecology and proliferation dynamics of O. cf. ovata are driven by complex interactions among biotic and abiotic drivers, and understanding mechanisms triggering bloom events is still far from being complete. The aim of the present study is to highlight the role of different habitat conditions, elucidating the effects of i) exposure to hydrodynamic conditions, ii) macroalgal community and iii) urbanisation level, in driving O. cf. ovata bloom dynamics. A significant effect of hydrodynamics was observed only for cells in seawater, with higher abundances in sheltered zones, irrespective of the urbanisation level. Similarly, a significant effect of the dominant macroalgal community, with higher abundances in Corallinales and turf dominated communities, and lower ones in Cystoseira amentacea canopies, has been recorded, consistently in the differently urbanised sites. Additionally, stretches of the coast suffering from a more intense anthropic exploitation are in general more prone to the proliferation of potentially toxic benthic microalgae. All these results imply a larger risk exposure to toxic effects for humans in urban beaches and sheltered areas, usually more attended by swimmers and bathers. These findings underline the need to preserve, and eventually restore, canopy dominated assemblages, which presently are under regression because of human threats, providing a straightforward example that restoration of relevant habitats implies a cascading improvement of human welfare.



中文翻译:

生境对骨质疏松症的影响cf. 卵形花动力学

在过去的几十年中,热带起源的有毒底栖藻类甲Ostreopsis spp。)对地中海产生了浓厚的兴趣,在地中海观察到了几次开花事件。O. cf.的生态学和扩散动力学卵子是由生物驱动程序和非生物驱动程序之间复杂的相互作用驱动的,并且了解引发花粉事件的机制仍然远远不够。本研究的目的是突出的不同生境条件的作用,阐明我的暴露于流体动力学条件,ⅱ)藻类群落和iii)城市化水平的影响),在驱动O.比照 卵形绽放动态。不论城市化水平如何,仅对海水中的细胞观察到流体动力学的显着影响,在庇护区中的细胞丰度更高。同样,主要的大型藻类群落具有显着影响,在Corallinales和草皮为主的群落中丰度较高,而在Cystoseira amentacea中则较低在不同的城市化地点一致记录了树冠。另外,遭受更激烈的人类开发的沿海地区通常更容易扩散潜在有毒的底栖微藻。所有这些结果表明,在城市海滩和庇护所中,人受到毒害的风险更大,通常更多的是游泳者和沐浴者。这些发现强调了保护并最终恢复冠层优势的组合的必要性,这些组合目前由于人为威胁而处于退化之中,提供了一个直接的例子,即相关生境的恢复意味着人类福利的不断改善。

更新日期:2018-10-05
down
wechat
bug