Contrasting distribution and speciation of sedimentary organic phosphorus among different basins of the Baltic Sea

Author:

Rydin Emil1ORCID,Broman Elias12ORCID,Reitzel Kasper3,Lukkari Kaarina4,Hermans Martijn156ORCID,Kumblad Linda1,Karlsson Magnus7ORCID,Apler Anna8,Ek Bo9,Sjöberg Per J. R.9

Affiliation:

1. Baltic Sea Centre Stockholm University Stockholm Sweden

2. Department of Biology, Environment and Plant Sciences Stockholm University Stockholm Sweden

3. Department of Biology University of Southern Denmark Odense Denmark

4. Finnish Environment Institute Helsinki Finland

5. Environmental Geochemistry Group, Faculty of Science University of Helsinki Helsinki Finland

6. Aquatic Biogeochemistry Research Unit (ABRU), Ecosystems and Environment Research Program, Faculty of Biological and Environmental Sciences University of Helsinki Helsinki Finland

7. IVL Swedish Environmental Research Institute Stockholm Sweden

8. Swedish Geological Survey Uppsala Sweden

9. Chemistry‐BMC, Analytical Chemistry Department Uppsala University Uppsala Sweden

Abstract

AbstractRecycling of phosphorus (P) from deoxygenated sediments perpetuates eutrophic conditions in parts of the Baltic Sea. Sedimentary organic P is a major source of dissolved P to the water column, but also a sink for permanent P burial. The mechanisms behind these two pathways are, however, largely unknown. Using new methods, we determined P in DNA and phospholipids, which are both found in all organisms. We also identified inositol phosphates that are particularly important in eukaryotes. Sediment cores were collected from contrasting basins in the Baltic Sea to study their relative contribution to the total P pool. We found high DNA‐P/phospholipid‐P ratios in surface sediments from the Bothnian Bay and Bothnian Sea. However, these ratios were low throughout profiles in euxinic Baltic Proper sediments. The elevated ratios present in sediments overlain by oxic bottom waters might indicate the presence of a microbial community stimulated by bioturbation, whereas the low DNA‐P/phospholipid‐P ratios in Baltic Proper sediments likely indicate an energy‐limited microbial community, typical to the “deep biosphere” environment. Inositol‐P was almost absent in euxinic Baltic Proper sediments that had a low total P amount compared to those in the other basins. We suggest that variability in the composition of sedimentary microbial communities among the Baltic Sea basins might cause differences in organic P forms that in turn affects its turnover.

Publisher

Wiley

Subject

Aquatic Science,Oceanography

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3