The problem of seasonality of benthic hydroids in temperate waters
The problem of seasonality of benthic hydroids in temperate waters
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DOI：
10.1080/02757540600670810
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发表时间：
2006-01-01
影响因子：
2.5
通讯作者：
Boero, Ferdinando
中科院分区：
文献类型：
--
作者：
Bavestrello, G.;Puce, S.;Boero, Ferdinando
关于浮游生物群落的季节变化有丰富的数据，但很少有研究考虑到底栖生物的年周期。事实上，一般认为大型底栖动物是由生长缓慢的生物组成的，其变化主要与基质竞争有关。相反，水螅虫是大型底栖动物的一个重要类群，在温带和热带沃茨，它们经历着剧烈的季节性循环。例如，在波托菲诺海角（利古里亚海），大约一半的记录物种在冬季和30%在夏季蓬勃发展，其余的是恒定的存在。在这里，我们修改了现有的数据有关的环境因素切换通道从静止到活跃的阶段。现有的数据表明，马赛克的物理因素，生物相互作用，和内部线索触发水螅周期性行为。
A wealth of data are available on the seasonal variation of plankton communities, but few studies take into consideration the circannual cycles of benthic organisms. In fact, the macrobenthos is generally considered as composed by slow-growing organisms showing variations mainly in relation to substrate competition. On the contrary, hydroids are an important group of macrobenthos that, in temperate but also in tropical waters, undergo sharp seasonal cycles. For example, on the Portofino promontory (Ligurian Sea), about half of the recorded species thrive in winter and 30% in the summer, the rest being constant in presence. Here, we revise the available data about the environmental factors switching the passage from quiescent to active phases. The available data suggest that a mosaic of physical factors, biotic interactions, and internal clues triggers the hydroid cyclic behaviour.