Data/hora: 10/06/2024 19:10:15

Provedor de dados: | 86
País: | Brazil
Título: | Semivariogram models for estimating fig fly population density throughout the year
Autores: | Batistella Pasini,Mauricio Paulo; Dal'Col Lúcio,Alessandro; Cargnelutti,Alberto Filho.
Data: | 2014-07-01
Ano: | 2014
Palavras-chave: | Zaprionus indianus; Geostatistics; Integrated pest management; Monitoring; Regionalized variables; Spatial dependence.
Resumo: | The objective of this work was to select semivariogram models to estimate the population density of fig fly (Zaprionus indianus; Diptera: Drosophilidae) throughout the year, using ordinary kriging. Nineteen monitoring sites were demarcated in an area of 8,200 m2, cropped with six fruit tree species: persimmon, citrus, fig, guava, apple, and peach. During a 24 month period, 106 weekly evaluations were done in these sites. The average number of adult fig flies captured weekly per trap, during each month, was subjected to the circular, spherical, pentaspherical, exponential, Gaussian, rational quadratic, hole effect, K-Bessel, J-Bessel, and stable semivariogram models, using ordinary kriging interpolation. The models with the best fit were selected by cross-validation. Each data set (months) has a particular spatial dependence structure, which makes it necessary to define specific models of semivariograms in order to enhance the adjustment to the experimental semivariogram. Therefore, it was not possible to determine a standard semivariogram model; instead, six theoretical models were selected: circular, Gaussian, hole effect, K-Bessel, J-Bessel, and stable.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000700493

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2014000700001
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.49 n.7 2014
Fonte: | info:eu-repo/semantics/openAccess