Pressure-state-response indicators for environmental conservation assessment of urban streams
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.006.0017Keywords:
PER system, Environmental indicators, Stream RevitalizationAbstract
SSeveral Brazilian cities were established due to a river or streams. This is the case of São Paulo, Belem, Manaus, Recife, João Pessoa and many others. The hygienist urbanization model has landed and channeled rivers and streams, negatively affecting their ecological functions and people's quality of life. Recently, urban rivers and streams in several cities around the world have been undergoing a process of revitalization, seeking to reestablish their ecological balance and social function. This paper suggests a set of indicators to more effectively consolidate the process of diagnosing the situation of urban streams in Brazil, as well as to evaluate the effectiveness of revitalization interventions in these ecosystems. The indicators were pre-selected from the literature review and subsequently sent for expert evaluation. The answers to the form were submitted to Cronbach's alpha reliability test. The average standard deviation of the responses was 0.75, considering the assigned scale from 1 to 5. Nine indicators were selected and classified in the Pressure-State-Response (PER) system. The indicators selected for the 'pressure' dimension are related to the intensity of pollutant discharge in the stream and the impact suffered by urbanization. For 'state' were selected a chemical, a physical and a biological indicator. And in the 'response', societal actions that reduce pressures and improve the ecological state of an urban stream. The indicators may compose an index and assist in the diagnosis and evaluation of urban stream revitalization projects.
Downloads
Downloads
Published
Issue
Section
License
The CBPC - Companhia Brasileira de Produção Científica (Brazil CNPJ: 11.221.422/0001-03) the material rights of the published works. The rights relate to the publication of the work anywhere in the world, including rights to renewals, expansions and dissemination of the contribution, as well as other subsidiary rights. All electronically published works may subsequently be published in printed collections under the coordination of this company and / or its partners. The authors preserve the copyright, but are not allowed to publish the contribution in another medium, printed or digital, in Portuguese or in translation.