RAPELD: a modification of the Gentry method for biodiversity surveys in long-term ecological research sites

Magnusson, William E.; Lima, Albertina P.; Luizão, Regina C. C.; Luizão, Flávio J.; Costa, Flávia R. C.; Castilho, Carolina V.; Kinupp, Valdely Ferreira

doi:10.1590/s1676-06032005000300002

Cited by 361 publications

(242 citation statements)

References 15 publications

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“…In the first period, we used four preestablished trails, each approximately 2 km in length, two of which passed through savanna formations (rocky outcrop Cerrado -Cerrado Rupestre and Typical Cerrado -Cerrado Típico) and two through forest formations (Gallery Forest and Semideciduous Forest). In the second period we sampled the module that follows the RAPELD model (Magnusson et al 2005), in which two parallel 5-km-long trails, one kilometer apart from each other, pass through different Cerrado phytophysiognomies, such as Shrubby Grassland Cerrado (Cerrado Ralo), Typical Cerrado, Semideciduous Forest and Gallery Forest (sensu Ribeiro & Walter 2008).…”

Section: Methodsmentioning

confidence: 99%

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

et al. 2014

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We recorded interactions between frugivorous birds and plants in the Cerrado and we assessed the role and importance of birds as potential seed dispersers. We analyzed the distribution of recorded feeding events, bird-plant interactions, and bird species composition between savanna and forest formations and between the dry and rainy seasons. Samplings were carried out from August 2009 to October 2010 and from November 2011 to August 2012 by means of line transects and focal observations. We recorded 348 feeding events and 187 interactions involving 44 plant species and 60 bird species. Most of the feeding events were observed in the forests and during the dry season (χ2 = 39.529; gl = 1; p < 0.001). However, no significant difference was found in the number of interactions (χ2 = 15.975; gl = 1; p = 0.06) between the two vegetation formations and between seasons. The bird species composition differed between savanna and forest formations (ANOSIM, R = 0.238; p < 0.001) and between the dry and rainy seasons (ANOSIM, R = 0.223; p < 0.001). Most of the potential seed dispersers were generalist birds that preferentially occupy forests during the dry season. Records of feeding events in forest formations increased in the dry season, indicating that birds use these sites as foraging areas during this period. We suggest that the preservation of forests in predominantly savanna-like ecosystems such as the Cerrado is extremely important for frugivorous birds and for frugivore-plant interactions.

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Section: Methodsmentioning

confidence: 99%

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

et al. 2014

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“…and Attalea spp. The canopy height is of 30-37 m with some emergent trees reaching up to 40-45 m. The mean temperature is 26ºC and the mean annual rainfall between 1965 and 1980 was of 1,362±400 mm, with a short dry season between July and September (Marques-Filho et al, 1981).…”

Section: Methodsmentioning

confidence: 99%

Ant species distribution along a topographic gradient in a "terra-firme" forest reserve in Central Amazonia

Oliveira

Souza

Baccaro³

et al. 2009

Pesq. agropec. bras.

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-In Amazonia, topographical variations in soil and forest structure within "terra-firme" ecosystems are important factors correlated with terrestrial invertebrates' distribution. The objective of this work was to assess the effects of soil clay content and slope on ant species distribution over a 25 km 2 grid covering the natural topographic continuum. Using three complementary sampling methods (sardine baits, pitfall traps and litter samples extracted in Winkler sacks), 300 subsamples of each method were taken in 30 plots distributed over a wet tropical forest in the Ducke Reserve (Manaus, AM, Brazil). An amount of 26,814 individuals from 11 subfamilies, 54 genera, 85 species and 152 morphospecies was recorded (Pheidole represented 37% of all morphospecies). The genus Eurhopalothrix was registered for the first time for the reserve. Species number was not correlated with slope or clay content, except for the species sampled from litter. However, the Principal Coordinate Analysis indicated that the main pattern of species composition from pitfall and litter samples was related to clay content. Almost half of the species were found only in valleys or only on plateaus, which suggests that most of them are habitat specialists. In Central Amazonia, soil texture is usually correlated with vegetation structure and moisture content, creating different microhabitats, which probably account for the observed differences in ant community structure.

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“…Korhonen et al (2006) e Montenegro e Montenegro (2006) destacaram a importância dos planos de amostragem e testes adequados para estudos de variabilidade espacial em função de malhas regulares, de transectos e de conjuntos de pontos aleatoriamente distribuídos. Neste estudo o delineamento amostral segue o método RAPELD (inventários rápidos -RAP e Projetos Ecológicos de Longa-Duração -PELD (Magnusson et al, 2005), que subdivide uma área de 1 x 5 km em parcelas de medidas a cada 250 m, levando em consideração a topografia do local. Dentro destas parcelas RAPELD, as medidas do IAF foram feitas em abril de 2013, em uma malha construída e georreferenciada, com os pontos de cruzamento estabelecidos em linhas de 50 metros de comprimento e equidistantes 25 metros entre elas, com intervalos regulares de 5 metros entre os pontos de coleta.…”

Section: Métodosunclassified

Variabilidade do índice de área foliar em campos naturais e floresta de transição na região Sul do Amazonas

Jordão¹,

Zanchi²,

Ferreira³

et al. 2015

Rev. ambiente água

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RESUMOO Índice de Área Foliar (IAF) é determinante nos processos de trocas de massa e energia nos ecossistemas, sendo fundamental para o entendimento das mudanças no clima regional e na dinâmica do ecossistema. O objetivo deste trabalho foi analisar, por meio da geoestatística, a variabilidade e dependência espacial dos valores de índice de área foliar (IAF) em áreas naturais de campo 'baixo', campo 'alto' e floresta de transição no Sul do Amazonas. Os valores de IAF foram determinados numa malha regular com 33 pontos para cada área estudada, e a aquisição dos dados foi feita pelo analisador de dossel LAI-2000, que permite se calcular a estrutura da vegetação com base na radiação que penetra na copa das árvores. Os valores médios do IAF variaram de acordo com a área estudada, com maiores valores na floresta (4,42 m²m -2 ), seguida pelo campo alto (2,03 m²m -2 ) e campo baixo (1,72 m²m -2 ). Em todas as áreas os valores de IAF mostraram dependência espacial com o uso da krigagem entre as amostras e apresentam distribuição espacial diferenciada em cada área estudada: o grau de dependência espacial foi moderado na floresta de transição e fraco para os campos naturais, sendo que no campo alto a distância limite em que os pontos estão correlacionados é de 35,3 m. No mapa de krigagem foi possível observar manchas com valores altos e baixos distribuídos de forma diferenciada entre as áreas estudadas.Palavras-chaves: amazônia, geoestatística, índice de área foliar, Krigagem. Variability of the Leaf Area Index in natural fields and transition forest in Southern Amazonas State, Brazil ABSTRACTThe Leaf Area Index (LAI) has strong influence on ecosystems' energy and mass exchange and is fundamental to the understanding of regional climate changes and ecosystem

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RAPELD: a modification of the Gentry method for biodiversity surveys in long-term ecological research sites

Cited by 361 publications

References 15 publications

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

Ant species distribution along a topographic gradient in a "terra-firme" forest reserve in Central Amazonia

Variabilidade do índice de área foliar em campos naturais e floresta de transição na região Sul do Amazonas

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