富营养化水库中沉积磷库和磷酸酶活性的空间异质性。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Abagael N. Pruitt, Kynser Wahwahsuck, Samantha G. Thomas, Amy J. Burgin
{"title":"富营养化水库中沉积磷库和磷酸酶活性的空间异质性。","authors":"Abagael N. Pruitt,&nbsp;Kynser Wahwahsuck,&nbsp;Samantha G. Thomas,&nbsp;Amy J. Burgin","doi":"10.1002/jeq2.20621","DOIUrl":null,"url":null,"abstract":"<p>Agriculture is necessary for food production, but agricultural inputs of phosphorus (P) to waterways can lead to harmful algal blooms in downstream reservoirs. Some of the P that enters these water bodies can be stored in reservoir sediments and later contribute to internal P loading, supplementing external P loads carried in from rivers. Increased P can lead to harmful algal blooms. However, how P is cycling in the sediment of these water bodies varies spatially and temporally has been relatively unstudied. Our objective was to understand how P concentration and form vary spatiotemporally, as well as how P is processed in the sediment of the reservoir. We sampled 30 locations in both August and October 2018 around Milford Reservoir (Kansas), a man-made eutrophic reservoir with frequent harmful algal blooms. We collected water chemistry samples, field measurements of temperature, dissolved oxygen, and pH, and sediment samples to analyze for P chemical speciation and phosphatase enzyme activity. We show that P release by phosphatase activity was higher under anaerobic and basic conditions, which subsequently affects spatiotemporal variation in sediment P pools. We found that low oxygen positively influenced phosphatase activity and sediment P pools, and may drive high internal P loading and harmful algal blooms in the summer months. This research increased our understanding of P cycling in a reservoir highly impacted by agricultural inputs and contributed to a small but growing body of research on internal P loading in midwestern reservoirs.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"1140-1151"},"PeriodicalIF":2.2000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Spatial heterogeneity in sediment phosphorus pools and phosphatase activity in a eutrophic reservoir\",\"authors\":\"Abagael N. Pruitt,&nbsp;Kynser Wahwahsuck,&nbsp;Samantha G. Thomas,&nbsp;Amy J. Burgin\",\"doi\":\"10.1002/jeq2.20621\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Agriculture is necessary for food production, but agricultural inputs of phosphorus (P) to waterways can lead to harmful algal blooms in downstream reservoirs. Some of the P that enters these water bodies can be stored in reservoir sediments and later contribute to internal P loading, supplementing external P loads carried in from rivers. Increased P can lead to harmful algal blooms. However, how P is cycling in the sediment of these water bodies varies spatially and temporally has been relatively unstudied. Our objective was to understand how P concentration and form vary spatiotemporally, as well as how P is processed in the sediment of the reservoir. We sampled 30 locations in both August and October 2018 around Milford Reservoir (Kansas), a man-made eutrophic reservoir with frequent harmful algal blooms. We collected water chemistry samples, field measurements of temperature, dissolved oxygen, and pH, and sediment samples to analyze for P chemical speciation and phosphatase enzyme activity. We show that P release by phosphatase activity was higher under anaerobic and basic conditions, which subsequently affects spatiotemporal variation in sediment P pools. We found that low oxygen positively influenced phosphatase activity and sediment P pools, and may drive high internal P loading and harmful algal blooms in the summer months. This research increased our understanding of P cycling in a reservoir highly impacted by agricultural inputs and contributed to a small but growing body of research on internal P loading in midwestern reservoirs.</p>\",\"PeriodicalId\":15732,\"journal\":{\"name\":\"Journal of environmental quality\",\"volume\":\"53 6\",\"pages\":\"1140-1151\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of environmental quality\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jeq2.20621\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of environmental quality","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jeq2.20621","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

农业是粮食生产的必要条件,但农业向水道输入的磷(P)会导致下游水库中有害藻类大量繁殖。进入这些水体的部分磷可储存在水库沉积物中,随后会增加内部磷负荷,补充从河流携带进来的外部磷负荷。P 的增加会导致有害的藻类大量繁殖。然而,对这些水体沉积物中的钾如何在空间和时间上循环变化的研究相对较少。我们的目标是了解磷浓度和形态的时空变化以及磷在水库沉积物中的处理过程。我们在 2018 年 8 月和 10 月对米尔福德水库(堪萨斯州)周围的 30 个地点进行了采样,该水库是一个经常发生有害藻类大量繁殖的人造富营养化水库。我们采集了水化学样本,对温度、溶解氧和 pH 值进行了实地测量,并采集了沉积物样本,以分析磷的化学成分和磷酸酶活性。我们的研究表明,在厌氧和碱性条件下,磷酸酶活性释放的磷更多,从而影响了沉积物磷库的时空变化。我们发现,低氧会对磷酸酶活性和沉积物钾池产生积极影响,并可能导致夏季内部钾负荷增加和有害藻类大量繁殖。这项研究加深了我们对一个受农业投入严重影响的水库的磷循环的了解,并为有关中西部水库内部磷负荷的少量但不断增长的研究做出了贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatial heterogeneity in sediment phosphorus pools and phosphatase activity in a eutrophic reservoir

Agriculture is necessary for food production, but agricultural inputs of phosphorus (P) to waterways can lead to harmful algal blooms in downstream reservoirs. Some of the P that enters these water bodies can be stored in reservoir sediments and later contribute to internal P loading, supplementing external P loads carried in from rivers. Increased P can lead to harmful algal blooms. However, how P is cycling in the sediment of these water bodies varies spatially and temporally has been relatively unstudied. Our objective was to understand how P concentration and form vary spatiotemporally, as well as how P is processed in the sediment of the reservoir. We sampled 30 locations in both August and October 2018 around Milford Reservoir (Kansas), a man-made eutrophic reservoir with frequent harmful algal blooms. We collected water chemistry samples, field measurements of temperature, dissolved oxygen, and pH, and sediment samples to analyze for P chemical speciation and phosphatase enzyme activity. We show that P release by phosphatase activity was higher under anaerobic and basic conditions, which subsequently affects spatiotemporal variation in sediment P pools. We found that low oxygen positively influenced phosphatase activity and sediment P pools, and may drive high internal P loading and harmful algal blooms in the summer months. This research increased our understanding of P cycling in a reservoir highly impacted by agricultural inputs and contributed to a small but growing body of research on internal P loading in midwestern reservoirs.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of environmental quality
Journal of environmental quality 环境科学-环境科学
CiteScore
4.90
自引率
8.30%
发文量
123
审稿时长
3 months
期刊介绍: Articles in JEQ cover various aspects of anthropogenic impacts on the environment, including agricultural, terrestrial, atmospheric, and aquatic systems, with emphasis on the understanding of underlying processes. To be acceptable for consideration in JEQ, a manuscript must make a significant contribution to the advancement of knowledge or toward a better understanding of existing concepts. The study should define principles of broad applicability, be related to problems over a sizable geographic area, or be of potential interest to a representative number of scientists. Emphasis is given to the understanding of underlying processes rather than to monitoring. Contributions are accepted from all disciplines for consideration by the editorial board. Manuscripts may be volunteered, invited, or coordinated as a special section or symposium.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信