Natural and anthropic inputs of nutrients in hydrographic basins of reservoirs in the Brazilian semiarid

Author:

De-Carvalho Herbster Ranielle Lira1ORCID,Henry-Silva Gustavo Gonzaga2ORCID

Affiliation:

1. Instituto Brasileiro do Meio Ambiente e Recursos Naturais Renováveis, Brasil

2. Universidade Federal Rural do Semiárido, Brasil

Abstract

Abstract: Aim Estimate the input of loads of N and P emitted by natural (atmospheric deposition and soil denudation) and anthropogenic (agriculture, livestock and sewage) factors for the hydrographic basins of two reservoirs in the Brazilian semiarid region (Mendubim and Umari). Methods In the present work, we use georeferenced data provided by official agencies, data presented in academic papers, field samples and laboratory analysis of emission factors in the estimates of nitrogen and phosphorus inputs in reservoir basins of Brazilian semiarid region. Results Soil denudation was identified as the main natural source of N and atmospheric deposition as the main source of P in both basins. Among the anthropogenic sources, the main source of N and P, for the two basins, was livestock. The total loads (natural and anthropogenic) of N (579.01 tonne. year-1) and P (136.35 tonne. year-1) received by the Umari basin was, respectively, 43.90% and 22.10% higher than those received by Mendubim, with a predominance of anthropogenic sources in both nitrogen and phosphorus emission. Conclusions The results showed the importance of monitoring human activities that can enhance nutrient inputs, such as nitrogen and phosphorus, in basins of the Brazilian semiarid region. The quantification of the emission factors analyzed here can be a tool in the development of strategies to mitigate the problems that high concentrations of N and P can bring to the quality and use of water in semiarid reservoirs.

Publisher

FapUNIFESP (SciELO)

Subject

Water Science and Technology,Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics

Reference71 articles.

1. Lima beans production and economic revenue as function of organic and mineral fertilization;Alves A.U.;Hortic. Bras.,2008

2. Official methods of analysis,2005

3. A global high-resolution inventory for ammonia;Bouwman A.F.;Global Biogeochem. Cycles,1997

4. Animal waste BMP Impacts on sediment and nutrient losses in runoff from the owl run watershed;Brannan K.M.;Trans. ASAE,2000

5. Influence of Nile tilapia (Oreochromis niloticus) fish farming in net cages on the nutrient and particulate matter sedimentation rates in Umari reservoir, Brazilian semi-arid;Cacho J.C.S.;Aquacult. Rep.,2020

Cited by 1 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