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| DOI | 10.1111/gbi.12323 |
| A small marine biosphere in the Proterozoic | |
| Laakso T.A.; Schrag D.P. | |
| 发表日期 | 2019 |
| ISSN | 14724677 |
| 起始页码 | 161 |
| 结束页码 | 171 |
| 卷号 | 17期号:2 |
| 英文摘要 | The riverine supply of the globally limiting nutrient, phosphorus, to the ocean accounts for only a few percent of nutrient supply to photosynthetic organisms in surface waters. Recycling of marine organic matter by heterotrophic organisms provides almost all of the phosphorus that drives net primary production in the modern ocean. In the low-oxygen environments of the Proterozoic, the lack of free oxygen would have limited rates of oxic respiration, slowing the recycling of nutrients and thus limiting global rates of photosynthesis. A series of steady-state mass balance calculations suggest that the rate of net primary production in the ocean was no more than 10% of its modern value during the Proterozoic eon, and possibly less than 1%. The supply of nutrients in such a world would be dominated by river input, rather than recycling within the water column, leading to a small marine biosphere found primarily within estuarine environments. © 2018 John Wiley & Sons Ltd |
| 关键词 | biosphereestuarine environmentmarine environmentnet primary productionnutrient cyclingnutrient limitationorganic matterprimary productionProterozoicrecyclingsurface waterwater columnoxygenphosphorussea wateraquatic speciesbiotachemistryestuaryphotosynthesisphysiologyriverAquatic OrganismsBiotaEstuariesOxygenPhosphorusPhotosynthesisRiversSeawater |
| 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/133241 |
| 推荐引用方式 GB/T 7714 | Laakso T.A.,Schrag D.P.. A small marine biosphere in the Proterozoic[J]. Geobiology,2019,17(2). |
| APA | Laakso T.A.,&Schrag D.P..(2019).A small marine biosphere in the Proterozoic.,17(2). |
| MLA | Laakso T.A.,et al."A small marine biosphere in the Proterozoic".17.2(2019). |
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