Consulta: subjectFacets:"Urban lakes"
Registros recuperados: 2
Data/hora: 11/06/2024 04:30:30

THE VALUE OF WATER AS AN URBAN CLUB GOOD: A MATCHING APPROACH TO HOA-PROVIDED LAKES
Provedor de dados: 31
Autores: Abbott,   Joshua K.; Klaiber,   H. Allen.
Urban lakes located in arid environments require large quantities of water to maintain their water levels, with much of this water associated with high opportunity costs. Many of these lakes are manmade and provide various amenities to surrounding residents. In this paper we use matching techniques to recover the average capitalized value of lakes to surrounding communities and differentiate between community members and adjacent households to recover heterogeneous treatment effects. Importantly, we consider the role of both unobservable and observable features of matching to recover heterogeneous capitalization across lake communities. Our results suggest that the capitalized value of lakes to community residents is highly heterogeneous and ranges from an...
Tipo: Conference Paper or Presentation
Palavras-chave: Matching; Treatment effects; Urban lakes; Capitalization; Environmental Economics and Policy; Political Economy; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103781

Correlation between Escherichia coli and limnological variables in water samples of the Lagoa da Maraponga, Fortaleza, Ceará State, Brazil - doi: 10.4025/actascibiolsci.v33i2.7842
Provedor de dados: 3
Autores: Pereira, Vitor Matheus Galdino; Universidade Federal do Ceará; Gomes, Raimundo Bemvindo; Centro Federal de Educação Tecnológica do Estado do Ceará - CEFETCE; Sá, Marcelo Vinícius do Carmo e; UFC.
The present work examined possible relationship between the Escherichia coli counts and the concentrations of free CO2, dissolved oxygen, reactive phosphorus, total ammonia, nitrite, pH, transparency and electric conductivity in water samples from the Lagoa da Maraponga (Fortaleza, Ceará State). Eight samplings were carried out every fifteen days to take samples under the water’s surface at three sampling stations. Regression analyses were performed with the variable with the greatest Pearson coefficients searching for the best fitted curve to observed data. The correlation between the water pH and E. coli was best represented by the equation &amp;ycirc; = 7.63 – 2.92 * 10-4 x (r² = 0.53; P = 0.06) where x is the E. coli count (MPN 100 mL-1) and y is the...
Palavras-chave: Ecologia de ecossistemas urbanos Eutrophication; Fecal coliforms; PH; Urban lakes Limnologia Eutrophication; Fecal coliforms; PH; Urban lakes.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7842