Stable Isotope Ratio and Elemental Analysis (CNS) in Mangrove Leaves in the Creek Ecosystem: An Indicator of Coastal Marine Pollution

IF 1 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION
MAPAN Pub Date : 2024-11-30 DOI:10.1007/s12647-024-00786-7
V. B. Yadav, Moushumi D. Dutta, Vandana A. Pulhani, A. Vinod Kumar
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Abstract

The stable isotopes ratio and elemental composition in the mangrove leaves are excellent indicators for coastal marine pollution. The present study investigated the composition of Carbon, Nitrogen, and Sulfur, δ13C and δ15N values in mangrove leaves to identify the source of pollution and energy to the mangroves in the creek ecosystem of Mumbai Harbour Bay. The oxygen and hydrogen stable isotope ratios (δ18O and δ2H) of leaf water were estimated to understand the relative contribution of freshwater and seawater to the mangrove's water source. The Carbon, Nitrogen and Sulfur contents were found to vary from 37.79 to 42.55% (Average: 40.06 ± 1.54%), 2.13–3.79% (Average: 2.94 ± 0.45%) and 0.37–0.81% (Average: 0.53 ± 0.14%) in the mangrove leaves, respectively. The δ13C and δ15N values were found to vary from − 30.43 to − 28.41‰ (Average: − 29.46 ± 0.74‰) and from − 2.67 to 5.54‰ (Average: 2.21 ± 3.20%), respectively. The δ18O and δ2H values were found to vary from − 2.7 to 0.83‰ and − 6.86 to 5.43‰ with an average of − 0.94 ± 0.83 and − 2.03 ± 3.52‰ respectively. According to the observed δ18O and δ2H values, mangroves in the northern part had a relatively higher contribution of freshwater input compared to southern part of the study area. The lower values of δ15N towards the northern end of the creek indicate a relatively higher contribution of nitrogen from industrial discharges. Similar values of δ13C in mangrove in the region suggest a common source of carbon. Mangroves found near discharge locations have different elemental composition and δ15N values compared to those mangroves that are not located near discharge location. These differences can be used as potential markers to identify the coastal marine pollution. The results of the present study may be used for developing rational approaches for protection and conservation of the mangrove ecosystem in the bay.

河流生态系统中红树林叶片的稳定同位素比率和元素分析(CNS):沿海海洋污染的一个指标
红树林叶片的稳定同位素比值和元素组成是沿海海洋污染的良好指标。本文通过对孟买港湾河流生态系统红树林叶片碳、氮、硫组成、δ13C和δ15N值的研究,确定了红树林的污染来源和能量来源。通过估算叶片水的氧和氢稳定同位素比值(δ18O和δ2H),了解淡水和海水对红树林水源的相对贡献。红树林叶片碳、氮、硫含量分别为37.79 ~ 42.55%(平均为40.06±1.54%)、2.13 ~ 3.79%(平均为2.94±0.45%)和0.37 ~ 0.81%(平均为0.53±0.14%)。δ13C值和δ15N值的变化范围分别为- 30.43 ~ - 28.41‰(平均值:- 29.46±0.74‰)和- 2.67 ~ 5.54‰(平均值:2.21±3.20%)。δ18O和δ2H值分别为- 2.7 ~ 0.83‰和- 6.86 ~ 5.43‰,平均值分别为- 0.94±0.83‰和- 2.03±3.52‰。从观测到的δ18O和δ2H值来看,研究区北部红树林对淡水输入的贡献相对高于南部红树林。溪北端δ15N值较低,表明工业排放氮的贡献相对较高。该区红树林δ13C值相近,表明其碳源相同。靠近排放点的红树的元素组成和δ15N值与未靠近排放点的红树不同。这些差异可以作为识别沿海海洋污染的潜在标志。本研究的结果可用于制定合理的方法来保护和养护海湾红树林生态系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
MAPAN
MAPAN 工程技术-物理:应用
CiteScore
2.30
自引率
20.00%
发文量
91
审稿时长
3 months
期刊介绍: MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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