Estrutura e composição florística de um cambarazal no pantanal de Poconé-MT

Nascimento, Marcelo Trindade; Cunha, Cátia Nunes da

doi:10.1590/s0102-33061989000100001

Cited by 45 publications

(40 citation statements)

References 7 publications

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“…The highest species richness of wasps in cambarazal may be related to vegetation structure and foliage density, once the cambarazal is a semi-deciduous forest and maintains much of the vegetation cover during the dry season (Nascimento & Nunes da Cunha, 1989 study area, despite Poly. sericea has presented a greater number of nests (44.58%) in this plant physiognomy.…”

Section: Discussionmentioning

confidence: 99%

Diversity of the Nests of Social Wasps (Hymenoptera: Vespidae: Polistinae) in the Northern Pantanal, Brazil

Almeida¹,

Andena²,

Silva³

2014

Sociobiology

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Some species of wasps demonstrate plasticity with diverse nesting habits according to the environmental conditions and substrates used for building the nests, while others are restricted to habitats with specific conditions and may exhibit some degree of fide-lity. The aim of this study was to estimate species richness and abundance of nests of Polistini and Epiponini wasps in four landscape units in the Pantanal of Poconé, Retiro Novo Farm, southwestern Mato Grosso state, Brazil. The nests of social wasps were sampled in four plant physiognomies locally known as cambarazal, landizal, pombeiral and campo limpo from August 25, 2011 to April 11, 2012, being recorded 308 nests of eight genera and 14 species of social wasps. The highest number of nests belongs to Polybia ruficeps xanthops (32.69%), Poly. sericea (24.27%) and Synoeca surinama (15.21%). The highest species richness was recorded in cambarazal and the highest abundance of nests in pombeiral, while campo limpo showed the lowest richness and abundance of nests. The nests of S. surinama were associated with cambarazal and landizal (IndVal = 93.3, P = 0.001), while the nests of Poly. ruficeps xanthops and Poly. chrysothorax were associated with cambarazal, landizal and pombeiral (IndVal = 97, P = 0.001). There was lower abundance and lower species richness of wasps in campo limpo. These results demonstrate that the maintenance of forest environments in the Pantanal is essential for the establishment and maintenance of social wasp nests.

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Section: Discussionmentioning

confidence: 99%

Diversity of the Nests of Social Wasps (Hymenoptera: Vespidae: Polistinae) in the Northern Pantanal, Brazil

Almeida¹,

Andena²,

Silva³

2014

Sociobiology

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“…"Cambarazais" occur in areas periodically flooded, and are frequently found within flooded fields and permanent lagoons. They are slightly deciduous, even during the dry period, what keeps the temperature mild in their interior (Nascimento and Nunes da Cunha, 1989). Litter is dense with a rich arthropod biodiversity as in the canopy (Marques et al, 2001(Marques et al, , 2006.…”

Section: Study Areamentioning

confidence: 99%

Birds' nesting parameters in four forest types in the Pantanal wetland

Pinho

Marini

2014

Braz. J. Biol.

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We tested the heterogeneity/productivity hypothesis with respect to the abundance and richness of birds and the vegetation density hypothesis with respect to birds' nest predation rates, and determined the relative importance of forested vegetation formations for the conservation of birds in the Pantanal. We estimated the apparent nesting success, and the abundance and richness of nesting birds' in four forest types, by monitoring nests during two reproductive seasons in four forested physiognomies (two high productivity/heterogeneity evergreen forests = Cambará and Landi; two low productivity/heterogeneity dry forests = Cordilheira and Carvoeiro) in the Pantanal wetland in Poconé, State of Mato Grosso, Brazil. We found 381 nests of 46 species (35 Passeriformes and 11 non-Passeriformes) in the four forest types. Of these, we monitored 220 active nests belonging to 44 species, 101 during the reproductive season of 2001 and 119 in 2002. We supported the productivity/heterogeneity hypothesis since the two evergreen forests had higher nest abundance and one of them (Cambará) had higher nesting species richness than the dry forests. The number of nests found in each habitat differed with most nests monitored in the Cambará forest (82%), followed by Landi (9%), Cordilheira (6%) and Carvoeiro (3%) forests. The total number of nests monitored was significantly higher in evergreen forests than in dry forests. Also, more species nested in evergreen (37 species) than in dry (16 species) forests. A Correspondence Analysis revealed that only Carvoeiros had a different nesting bird community. The overall apparent nesting success of 220 nests was 26.8%. We did not support the vegetation density hypothesis since nest predation rates were similar between evergreen (73.5%) and dry (70%) forests, and were higher in the Landi (85%) than in the other three forests (69.2 to 72.2%). Our data indicate that Cambará forests seem to be a key nesting habitat for many bird species of the Pantanal. If this local pattern also occurs in other regions of the Pantanal, the use and management of Cambará forests might prove to be important for the conservation of forest birds of this biome. However, conflicting results with other taxonomic groups show that conservation measures for these forests and land use policies should be based on a more complete biodiversity evaluation of the region.Keywords: nesting success, productivity/heterogeneity hypothesis, vegetation density hypothesis, Pantanal. Parâmetros reprodutivos de aves em quatro tipos de florestas no Pantanal ResumoTestamos a hipótese de heterogeneidade / produtividade com relação à abundância e riqueza de aves e hipótese da densidade de vegetação com relação às taxas de predação de ninhos de pássaros, e determinamos a importância relativa de formações vegetais florestais para a conservação das aves no Pantanal. Estimamos o sucesso de nidificação aparente, a abundância e riqueza de nidificação de aves em quatro tipos de floresta, por monitoramento de ninhos durante duas estações repr...

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“…É provável que espécies arbóreas desempenhem um papel importante na estabilização do solo e mudanças no grau de hidromorfi a, gerando condições favoráveis ao estabelecimento de novas espécies arbóreas, resultando em gradual avanço de formações fl orestais sobre as áreas mais abertas do Pantanal. Diversos fatores podem estar controlando a expansão das formações vegetais no pantanal, dentre eles, a inundação tem sido a mais estudada (Prance & Schaler 1982;Adámoli 1982;Nascimento & Nunes da Cunha 1989;Damasceno Júnior et al 1999; Outro fator sugerido por Prance & Schaler (1982) e Hamilton et al (1996), é o impacto humano na vegetação do Pantanal com a introdução do gado e o uso do fogo durante os últimos 200 anos. Os autores acreditam que as atividades humanas têm infl uenciado a natureza e a distribuição da vegetação no Pantanal.…”

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Avaliação da diversidade arbórea das ilhas do rio Paraguai na região de Cáceres, Pantanal Matogrossense, Brasil

et al. 2011

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ABSTRACT(Assessment of tree diversity on the islands of the Paraguay River, in the Caceres region, Pantanal, Brazil). Plant diversity on islands is associated with habitat heterogeneity, the distribution of a species, the flood pulse that may be influenced by fluvial dynamics and differences in geomorphologic origin. This study assessed the diversity of trees on six islands of the Paraguay River, between Caceres and Taimã Ecological Station, in the Pantanal, Brazil. Islands created by two geomorphologic processes were compared: sedimentation and islands formed when the necks of meanders erode. All of the trees with DBH ≥ 5 cm were sampled from 22 (10 m x 20 m) plots (per island), which were 50 m from each other. Ten plots were allocated in the central parts and 12 on the edges of the islands in areas where there was erosion and sediment deposition. The cluster constructed from the Sorensen coefficient resulted in dendrograms based on single bonds and Euclidean distance of similarity indexes, where hierarchies were observed among the groups when considering the plots located in the center and on the edge of the islands, and between islands. Forty species belonging to 34 genera and 21 families were recorded. The Shannon-Weaver diversity indexes ranged from H' 1.08 to 2.77. There was a difference in the floristic composition on the islands that were formed when necks of meanders eroded compared to those formed by sedimentation. There was a difference in the floristic composition when comparing the center and edge of islands formed when necks of meanders eroded.

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Estrutura e composição florística de um cambarazal no pantanal de Poconé-MT

Cited by 45 publications

References 7 publications

Diversity of the Nests of Social Wasps (Hymenoptera: Vespidae: Polistinae) in the Northern Pantanal, Brazil

Diversity of the Nests of Social Wasps (Hymenoptera: Vespidae: Polistinae) in the Northern Pantanal, Brazil

Birds' nesting parameters in four forest types in the Pantanal wetland

Avaliação da diversidade arbórea das ilhas do rio Paraguai na região de Cáceres, Pantanal Matogrossense, Brasil

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