气候变化领域集成服务门户(CCPortal): The impact of marine nutrient abundance on early eukaryotic ecosystems

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DOI	10.1111/gbi.12384
	The impact of marine nutrient abundance on early eukaryotic ecosystems
	Reinhard C.T.; Planavsky N.J.; Ward B.A.; Love G.D.; Le Hir G.; Ridgwell A.
发表日期	2020
ISSN	14724677
起始页码	139
结束页码	151
卷号	18 期号:2
英文摘要	The rise of eukaryotes to ecological prominence represents one of the most dramatic shifts in the history of Earth's biosphere. However, there is an enigmatic temporal lag between the emergence of eukaryotic organisms in the fossil record and their much later ecological expansion. In parallel, there is evidence for a secular increase in the availability of the key macronutrient phosphorus (P) in Earth's oceans. Here, we use an Earth system model equipped with a size-structured marine ecosystem to explore relationships between plankton size, trophic complexity, and the availability of marine nutrients. We find a strong dependence of planktonic ecosystem structure on ocean nutrient abundance, with a larger ocean nutrient inventory leading to greater overall biomass, broader size spectra, and increasing abundance of large Zooplankton. If existing estimates of Proterozoic marine nutrient levels are correct, our results suggest that increases in the ecological impact of eukaryotic algae and trophic complexity in eukaryotic ecosystems were directly linked to restructuring of the global P cycle associated with the protracted rise of surface oxygen levels. Our results thus suggest an indirect but potentially important mechanism by which ocean oxygenation may have acted to shape marine ecological function during late Proterozoic time. © 2020 John Wiley & Sons Ltd
关键词	ecosystem structure eukaryote fossil record marine ecosystem marine environment nutrient availability nutrient cycling nutrient dynamics oxygenation plankton Proterozoic zooplankton algae Eukaryota
语种	英语
来源机构	Geobiology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133192
推荐引用方式 GB/T 7714	Reinhard C.T.,Planavsky N.J.,Ward B.A.,et al. The impact of marine nutrient abundance on early eukaryotic ecosystems[J]. Geobiology,2020,18(2).
APA	Reinhard C.T.,Planavsky N.J.,Ward B.A.,Love G.D.,Le Hir G.,&Ridgwell A..(2020).The impact of marine nutrient abundance on early eukaryotic ecosystems.,18(2).
MLA	Reinhard C.T.,et al."The impact of marine nutrient abundance on early eukaryotic ecosystems".18.2(2020).