Different species of Tillandsia can be biomonitors of carbon and nitrogen emissions: the case of a tropical metropolitan area in Mexico

IF 2.4 4区 生物学 Q2 PLANT SCIENCES
Paula E. Tirado-Zamora, Yareni Perroni, Edison A. Díaz−Álvarez
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Abstract

Air pollution affects human health and ecosystems all over the world. However, little attention is paid to its monitoring in tropics, mainly due to the high costs of automated monitoring systems. Biomonitoring may be an alternative, particularly for species of Tillandsia genus, although most species are not yet calibrated for this purpose. Therefore, 1) to determine the biomonitoring potential of T. juncea and T. schiedeana and, 2) to compare the sources and magnitudes of atmospheric pollutants at five urban parks and one rural site in a tropical metropolitan area in Mexico, we measured the elemental and isotopic composition of carbon and nitrogen of four Tillandsia species. Carbon content was consistent across sites and species with no differences. The nitrogen content showed a clear trend of increasing from rural to urban areas, with significantly higher values observed in urban environments. The more negative δ13C values were recorded in urban parks, while less negative values were recorded in rural areas, reflecting differences in environmental CO₂ sources. Similarly, δ15N values were more negative in rural sites and shifted toward positive values in urban areas, showing the influence of anthropogenic nitrogen sources. These highlight the different environmental conditions across the rural and urban landscape. The four species can be used as biomonitors of C and N emissions, since their specific variations reflect the source and concentration of these atmospheric pollutants. Furthermore, the tillandsias showed that pollution in the metropolitan area is different depending on the activity at each site.

Abstract Image

不同种类的Tillandsia可以成为碳和氮排放的生物监测仪:以墨西哥的热带都市地区为例
空气污染影响着全世界的人类健康和生态系统。然而,由于自动化监测系统的高成本,热带地区的监测很少受到重视。生物监测可能是一种替代方法,特别是对Tillandsia属的物种,尽管大多数物种尚未为此目的进行校准。因此,为了确定T. juncea和T. schiedeana的生物监测潜力,以及2)比较墨西哥热带都市地区5个城市公园和1个农村站点的大气污染物来源和大小,我们测量了4种Tillandsia物种的碳和氮的元素和同位素组成。碳含量在不同立地和种间基本一致,无差异。氮含量呈现出明显的由农村向城市增加的趋势,其中城市环境的氮含量显著高于农村环境。城市公园的δ13C负值较多,而农村地区的δ13C负值较少,反映了环境CO₂来源的差异。同样,δ15N值在农村为负,在城市为正,显示出人为氮源的影响。这些突出了农村和城市景观的不同环境条件。这四种植物可以作为碳和氮排放的生物监测仪,因为它们的具体变化反映了这些大气污染物的来源和浓度。此外,tillandsias表明,大都市地区的污染因每个地点的活动而异。
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来源期刊
Acta Physiologiae Plantarum
Acta Physiologiae Plantarum 生物-植物科学
CiteScore
5.10
自引率
3.80%
发文量
125
审稿时长
3.1 months
期刊介绍: Acta Physiologiae Plantarum is an international journal established in 1978 that publishes peer-reviewed articles on all aspects of plant physiology. The coverage ranges across this research field at various levels of biological organization, from relevant aspects in molecular and cell biology to biochemistry. The coverage is global in scope, offering articles of interest from experts around the world. The range of topics includes measuring effects of environmental pollution on crop species; analysis of genomic organization; effects of drought and climatic conditions on plants; studies of photosynthesis in ornamental plants, and more.
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