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| Mendonça, Andrea Vita Reis; Souza, Josival Santos; Giulietti, Ana Maria; Van Den Berg, Cassio. |
| Allometric equations were developed for estimating individual plant biomass for ten species in an area of dry forest in northern of Bahia State, Brazil in the medium-lower São Francisco Basin, in Casa Nova and Remanso Counties. Fifteen individuals were sampled for each species , except for Chamaecrista belemii, that had 30 sampled individuals . The assessed models were those proposed in the literature and constructed by the forward and backward methods, adjusted on the soil level diameter (SLD) and total height (H) for each plant. It was obtained equations for estimating the aerial biomass for individual trees of Byrsonima gardneriana, Cenostigma macrophyllum, Chamaecrista belemii, Copaifera coriacea, Maytenus rigida, Ruprechtia glauca, Strychno... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allometric relations; Equations; Dry mass; Diametric class Engenharia florestal; Botânica; Ecologia Vegetal Relações alométricas; Equações; Classe diamétrica. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/579 |
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| Sousa Júnior,José de A. de; Garrido,Marlon da S.; Carvalho,Paulo G. S. de; Rocha,Luciano G. da; Campeche,Daniela F. B.. |
| This study aimed to apply mathematical models to the growth of Nile tilapia (Oreochromis niloticus) reared in net cages in the lower São Francisco basin and choose the model(s) that best represents the conditions of rearing for the region. Nonlinear models of Brody, Bertalanffy, Logistic, Gompertz, and Richards were tested. The models were adjusted to the series of weight for age according to the methods of Gauss, Newton, Gradiente and Marquardt. It was used the procedure "NLIN" of the System SAS® (2003) to obtain estimates of the parameters from the available data. The best adjustment of the data were performed by the Bertalanffy, Gompertz and Logistic models which are equivalent to explain the growth of the animals up to 270 days of rearing. From the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economy; Equations; Oreochromis niloticus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000500019 |
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