Show simple item record

Local abundance and regional distribution of tree species of forest fragments in Brazil: A test of models

dc.creatorLeite, Samuel Jorge
dc.creatorSantos Lopes, Frederico
dc.date2014-12-18
dc.date.accessioned2016-05-03T15:29:32Z
dc.date.available2016-05-03T15:29:32Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/17433
dc.identifier.urihttp://hdl.handle.net/10669/26690
dc.descriptionPatterns of local abundance and regional distribution of tree species were analyzed on three spatialscales and compared with those predicted by Hanski’s 1982 original core-satellite model, Brown’s 1984 nichebasedmodel, and Tokeshi’s 1992 model. Data were collected in seven forest fragments dispersed overapproximately 7200 km2, remnants of a former continuous forest in the south of Mato Grosso do Sul state,southwestern Brazil. Fifty-six east-west-oriented 10 m ¥ 150 m plots were randomly demarcated in thosefragments from 1994 to 1996. In each plot all trees having DBH ≥ 0.15 m were recorded and measured. Thesmallest scale was that of the fragments themselves and the greatest was that of the entire region. No evidencewas found of the bimodality predicted by Hanski’s 1982 model on any scale. On all scales, an unimodal patternwas found whose mode was on the left side (satellite mode) of the distribution. This pattern was in bestagreement with the predictions of Tokeshi’s 1992 model.en-US
dc.descriptionLos patrones de abundancia local y la distribución regional de árboles fueron analizados en tres escalas espaciales y comparados con los modelos de Hanski 1982, núcleo-satélite, el modelo basado en el nicho de Brown 1984, y el modelo de Tokeshi 1992. Los datos fueron recolectados en siete fragmentos remanentes de bosque, distribuidos en aproximadamente 7 200 km2, en Mato Grosso do Sul, suroeste de Brasil. De 1994 a 1996, se demarcó aleatoriamente, en estos fragmentos, cincuenta y seis unidades de muestras, orientados en el sentido esteoeste, con 10 m x 150 m. En cada unidad se midió todos los árboles con DAP ≥ 0.15 m. La menor escala fue el propio fragmento y la mayor escala toda la región. No encontramos evidencias de la bimodalidad prevista por el modelo de Hanski 1982. En todas las escalas se encontró un patrón unimodal, con moda a la izquierda de la distribución (moda satélite). El patrón observado en estos remanentes se ajustó más bien a las previsiones del modelo de Tokeshi 1992.es-ES
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (2) June 2001; 489-500en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (2) June 2001; 489-500es-ES
dc.sourceRevista Biología Tropical; Vol. 49 (2) June 2001; 489-500pt-PT
dc.source2215-2075
dc.source0034-7744
dc.subjectabundanceen-US
dc.subjectbiogeographyen-US
dc.subjectcore-satellite hypothesisen-US
dc.subjectspatial distributionen-US
dc.titleLocal abundance and regional distribution of tree species of forest fragments in Brazil: A test of modelsen-US
dc.titleLocal abundance and regional distribution of tree species of forest fragments in Brazil: A test of modelses-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record