Consulta: subjectFacets:"Permanent plots"
Registros recuperados: 4
Data/hora: 03/06/2024 10:18:24

A new technique for inventory of permanent plots in tropical forests: a case study from lowland dipterocarp forest in Kuala Belalong, Brunei Darussalam
Provedor de dados: 16
Autores: Hédl, R.; Svátek, M.; Dančák, M.; Rodzay, A.W.; Salleh, M.A.B.; Kamariah, A.S.
This paper describes a new technique for inventory of permanent plots in tropical forests and presents the results of its application in a 1 ha permanent plot in a lowland dipterocarp forest at Kuala Belalong, Ulu Temburong National Park, Brunei Darussalam. The technique is based on mapping of positions of tree individuals in three-dimensional space with a high accuracy. Measuring set consists of a distance measuring device (laser rangefinder) and a electronic compass supplying data to a field computer with specialized software (Field-Map®). This method is faster and more exact than methods based on Cartesian grids established in the field. As an example, inventories from 2000 and 2007 of the plot mentioned are compared concerning presence, taxonomical...
Tipo: Article / Letter to the editor
Palavras-chave: Electronic compass; Field-map; Forest inventory; Forest structure; Laser rangefinder; Lowland dipterocarp forest; Permanent plots; Taxonomic diversity.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/524957

Structure and dynamics in remnants of Araucaria Forest in Southern Brazilian plateau
Provedor de dados: 190
Autores: Lingner, Débora Vanessa; Oliveira, Yeda Maria Malheiros de; Rosot, Nelson Carlos; Dlugosz, Fernando Luís.
The present work aimed the characterization of the structure and dynamics of a forest patch belongingto the Ombrophylous Mixed Forest (FOM). Data from 10 permanent plots (25 x 100 m) representing the forestsubtype “predominance of Araucaria”, located at the Forest Reserve Embrapa-Epagri, in Caçador, State of Santa Catarina, were analyzed. Each tree whose girth at breast height (GBH) was equal or larger than 60 cm wasmeasured and identified. Measurements were taken annually from 2004 to 2007, thus allowing the dynamics to be evaluated for this period. The structure was analyzed by estimating phytossociological parameters and indexes and by characterizing the diameter distribution. Forty-one species, gathered into 24 families, were observed. Araucaria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mixed Ombrophylous Forest; Permanent plots; Phytossociology and diameter distribution Floresta Ombrófila Mista; Parcelas permanentes; Fitossociologia e distribuição diamétrica.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/119

Woody community dynamics in two fragments of "cerrado" stricto sensu over a seven-year period (1995-2002), MA, Brazil
Provedor de dados: 88
Autores: Aquino,Fabiana de Gois; Walter,Bruno Machado Teles; Ribeiro,José Felipe.
This study was conducted in two fragments of "cerrado" stricto sensu in the Gerais de Balsas Colonization Project, located in southern Maranhão, Brazil. The objective was to evaluate the dynamics of the woody plant community, over seven years (1995-2002). Four transects of 160 × 20 m were monitored. All woody plants with a stem diameter &gt; 3 cm, at 0.30 m above ground level, were recorded. In 1995, 983 and 1,177 stems were sampled in fragments 1 and 2, respectively; in 2002, 1057 and 1406 stems were sampled in the same fragments. In 1995, the Shannon diversity indices (H') were 3.07 and 3.33, in fragments 1 and 2, respectively, reaching their maximum value in 2002 of 3.11 and 3.35. The community of fragment 1 showed an increase of 7.5% in density and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragmentation; Permanent plots; Plant mortality; Recruitment; Savanna.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000100011

Species diversity, community structure and ecological traits of trees in an upper montane forest, southern Brazil
Provedor de dados: 39
Autores: Sühs,Rafael Barbizan; Hoeltgebaum,Marcia Patricia; Nuernberg-Silva,Anelise; Fiaschi,Pedro; Neckel-Oliveira,Selvino; Peroni,Nivaldo.
ABSTRACT Upper montane ecosystems in Brazil are little known, and their structural and functional aspects poorly understood. Our goals were to describe tree species diversity and community structure, and to characterize tree species in relation to their ecological traits, phytogeographic history and conservation status in an upper montane araucaria forest remnant. A total of 26 species belonging to 18 families were found in a 1-hectare permanent plot. The tree community mainly comprised trees with diameters of less than 20 cm and heights of between 6.5 and 9.5 m. Drimys angustifolia and Myrceugenia regnelliana had the highest importance values. Most species were shade tolerant while most individuals were pioneers. Most species and individuals presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria forest; Conservation; Diversity; Ecological traits; Floristics; Mixed rainforest; Permanent plots; Phytogeography; PPBio; Upper montane.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100153