Descripción
A forest inventory was carried out in 12 forest islands scattered in the large savanna matrix of Roraima, northern Brazilian Amazon. The fieldwork occurred between 2013-2014 based on direct observations along transects established between the edge-interior gradient of each sampled forest island. It was investigated species composition and forest structure variables: stem diameter (DBH = diameter at breast height ≥ 10 cm) and total height (visually estimated). All floristic dataset was correlated with the forest fragment size. The survey was conducted by the Research Group "Ecology and Natural Resource Management of Roraima Savanna", associated to the National Institute for Research in Amazonia (INPA).
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 1.087 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Jaramillo M M A, Turcios M M, Perdiz R O, Carvalho L C S, Barbosa R I (2019): Tree species composition of natural forest islands in a savanna matrix in the northern Brazilian Amazonia. v1.10. Sistema de Informação sobre a Biodiversidade Brasileira - SiBBr. Dataset/Occurrence. https://ipt.sibbr.gov.br/sibbr/resource?r=forest-island_floristic&v=1.10
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Sistema de Informação sobre a Biodiversidade Brasileira - SiBBr. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 5846793d-f540-473c-88ee-23b2b13af7ef. Sistema de Informação sobre a Biodiversidade Brasileira - SiBBr publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Brazil.
Palabras clave
Occurrence; species list; Amazonia; savanna; forest islands; seasonal forest
Contactos
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- Proveedor De Los Metadatos ●
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http://orcid.org/http://orcid.org/0000-0002-7482-346X
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Cobertura geográfica
The study was carried out on 12 natural forest fragments (forest islands) dispersed in a Roraima’s savanna area, located in the municipality of Boa Vista, state of Roraima, northern Brazilian Amazonia. This area is legally characterized as an INCRA agricultural colonization project - currently named as “Projeto de Assentamento Nova Amazônia I” (or PANA I). The PANA I cover an area > 43,000 ha in extension in the confluence zone between Rio Cauamé and Rio Murupu, both integrating the Rio Branco basin.
| Coordenadas límite | Latitud Mínima Longitud Mínima [2,886, -60,986], Latitud Máxima Longitud Máxima [3,153, -60,764] |
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Cobertura temporal
| Fecha Inicial / Fecha Final | 2013-07-03 / 2014-03-13 |
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Datos del proyecto
No hay descripción disponible
| Título | Estrutura, biomassa arbórea e composição florística de ilhas de mata da savana de Roraima, norte da Amazônia brasileira |
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| Fuentes de Financiación | Projeto Institucional PPI-INPA 15/122 (Ecologia e Manejo dos Recursos Naturais de Savanas e Florestas de Roraima) |
Personas asociadas al proyecto:
Métodos de muestreo
The natural forest fragments (forest islands) inventoried are Pleistocene relics that represent the richness and tree species composition of the past forest formations occurring in the forest-savanna contact zone of the northern Brazilian Amazonia. The forest inventory was articulated through the establishment of three transects crossing each island in the north-south direction. In each transect, sampling plots (10 m x 30 m) were dispersed between the border and the interior of the fragments: 8-10 plots for fragments with area > 30 ha, 4-8 for islands between 10-30 ha, and 2-6 for islands < 10 ha. This sampling design was the most adequate to represent the forest fragments, avoiding pseudo replication and maintaining a minimum distance (independence) between transects and plots. Forest inventory was performed based on measurements of stem DBH (cm) and individual total height (m); the last one by visual estimates. Vegetative and reproductive material were collected, as well as a general description of each species was done. Photographs of all collected morphotypes were done too.
| Área de Estudio | The study was carried out in 12 forest fragments distributed in the Roraima’s savanna region, located in the municipality of Boa Vista (state of Roraima), northern Brazilian Amazonia, in a locality currently known as “Projeto de Assentamento Nova Amazônia I” (PANA I): 2.8864 N to 3.1526 N / -60.7638 W at -60.9865 W. The phytophysionomic formation of the region is typically savanna, ranging from grassy to parkland, with several forest fragments scattered in the general landscape. The temporal coverage of the study was 07/2013 to 03/2014. |
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| Control de Calidad | All the individuals observed were measured. Most species were collected and registered by a numbered tag in the fieldwork. All of them were identified botanically to deposit in herbariums. Thirty-six vouchers representing most of the inventoried species were deposited in the UFRR Herbarium. |
Descripción de la metodología paso a paso:
- The species identification was done by R. O. Perdiz using both (i) specific literature and (ii) comparison with herbarium specimens from INPA, K, MIRR, P, RB, SPF, UFRR, and US, including the digital resources of Projeto REFLORA (Plantas do Brasil: Resgate Histórico e Herbário Virtual para o Conhecimento e Conservação da Flora Brasileira - http://reflora.jbrj.gov.br/reflora/herbarioVirtual/). Herbaria acronyms follow Thiers (2019).
- Scientific names of the species list were checked against database provided by BFG (2015) and Tropicos (http://www.tropicos.org/). The circumscriptions for the botanical families followed APG IV (2016).
Datos de la colección
| Nombre de la Colección | Flora das Ilhas de Mata da Savana de Roraima |
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Referencias bibliográficas
- APG-IV, 2016. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV. Botanical Journal of the Linnean Society 181, 1-20. http://dx.doi.org/10.1111/boj.12385
- Thiers, B. 2019. Index Herbariorum. A global directory of public herbaria and associated staff. New York Botanical Garden's Virtual Herbarium.
- BFG (Brazil Flora Group). 2015. Growing knowledge: an overview of Seed Plant diversity in Brazil. Rodriguésia 66, 1085-1113. http://dx.doi.org/10.1590/2175-7860201566411.
Metadatos adicionales
This dataset is associated to the Master Thesis of Margarita Maria Almanza Jaramillo (Estrutura, biomassa arbórea e composição florística de ilhas de mata da savana de Roraima, Norte da Amazônia Brasileira), concluded in August/2015 in the PRONAT/UFRR, Boa Vista, Roraima - http://bdtd.ibict.br/vufind/Record/UFRR_7f0b9955cdd438aabdb34036bc47394c
| Identificadores alternativos | 5846793d-f540-473c-88ee-23b2b13af7ef |
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| https://ipt.sibbr.gov.br/sibbr/resource?r=forest-island_floristic |