Eutrophication, harmful algae and biodiversity - Challenging paradigms in a world of complex nutrient changes
Eutrophication, harmful algae and biodiversity - Challenging paradigms in a world of complex nutrient changes
复制标题
DOI：
10.1016/j.marpolbul.2017.04.027
复制
发表时间：
2017-11-30
影响因子：
5.8
通讯作者：
Gilbert, Patricia M.
中科院分区：
文献类型：
--
作者：
Gilbert, Patricia M.
富营养化是一个复杂的过程，往往不仅与藻类总生物量的变化有关，而且与生物多样性的变化有关。通常的富营养化指标(例如，叶绿素a)、总氮(TN)和磷(TP)不足以理解生物多样性的变化，特别是与有害藻华(HAB)扩散有关的变化。有害藻类可能会随着富营养化而不成比例地增加，这取决于哪些营养物质会发生变化，以及变化的比例。本文对我们理解富营养化及其相关生物多样性变化的几个经典范式提出了挑战。潜在的信息是，营养比例和形式可能会改变生物多样性，即使营养物质的浓度超过了被认为是极限的浓度。全球的HAB问题正在走向更多的水华，更多的毒素，更经常地，在更多的地方。我们对赤潮和富营养化的管理方法必须考虑到从生理到生态的更广泛的复杂的营养效应。
Eutrophication is a complex process and often associated with not only a change in overall algal biomass but also with a change in biodiversity. Common metrics of eutrophication (e.g., chlorophyll a), total nitrogen (TN) and phosphorus (TP) are not adequate for understanding biodiversity changes, especially those associated with harmful algal bloom (HAB) proliferations. Harmful algae can increase disproportionately with eutrophication, depending on which nutrients change and in what proportion. This paper challenges several classic paradigms in our understanding of eutrophication and associated biodiversity changes. The underlying message is that nutrient proportions and forms can alter biodiversity, even when nutrients are at concentrations in excess of those considered limiting. The global HAB problem is on a trajectory for more blooms, more toxins, more often, in more places. Our approach to management of HABs and eutrophication must consider the broader complexity of nutrient effects at scales ranging from physiological to ecological.