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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Physiological responses of the tropical tree Tibouchina pulchra Cogn under the influence of combustion of crude oil and natural gas at an oil refinery

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Author(s):
Silva, Daiane T. [1] ; Moraes, Regina M. [1]
Total Authors: 2
Affiliation:
[1] Inst Bot, BR-04045972 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY; v. 90, p. 69-75, APR 1 2013.
Web of Science Citations: 7
Abstract

A refinery located on the slopes of a mountain range in the city of Cubatao (SE-Brazil) is the main source of sulfur dioxide (SO2) in the region. For this reason, the refinery replaced a system in which energy was produced from crude oil combustion in boilers with a system of energy and vapor co-generation in a thermoelectric power plant fueled by natural gas. The aim of this study was to investigate the responses of Tibouchina pulchra to the fuel switching. Saplings planted in pots were distributed throughout monitoring sites around the polluting source (sites I, II, III and IV) and in a site (V) far from emissions. Changes on the plants responses occur along the three fuel switching phases. During the last phase, increased carbon assimilation (Asat) and decreased stomatal conductance (gs) were observed in plants growing in sites II and III; as a consequence, intrinsic water use efficiency (iWUE) increased. However, the increase in Asat did not promote growth increase suggesting that changes at the refinery did not result in better air quality, but only in a change in the main contaminants. (C) 2013 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 09/12413-2 - Physiological responses of saplings of Tibouchina pulchra Cogn. (manacá-da-serra, Melatomataceae) exposed to air pollution nearby an oil refinary in Cubatão, SP
Grantee:Daiane Teixeira da Silva
Support type: Scholarships in Brazil - Master