Reproductive biology of two tree species of Leguminosae in a Montane Rain Forest in southeastern Brazil

Flora ◽  
2008 ◽  
Vol 203 (6) ◽  
pp. 491-498 ◽  
Author(s):  
Jakeline Prata de Assis Pires ◽  
Leandro Freitas
Keyword(s):  
Reproductive Biology ◽  
Tree Species ◽  
Rain Forest ◽  
Southeastern Brazil ◽  
Montane Rain Forest

Melastomataceae in a continental Atlantic Forest island from southeastern Brazil

Phytotaxa ◽  
2014 ◽  
Vol 183 (2) ◽  
pp. 61 ◽  
Author(s):  
Kelly Cristina Silva-Gonçalves ◽  
José Fernando Andrade Baumgratz ◽  
André Felippe Nunes-Freitas
Keyword(s):  
Coastal Plain ◽  
Rain Forest ◽  
New Records ◽  
Southeastern Brazil ◽  
Montane Rain Forest ◽  
Phenological Data ◽  
Forest Plant Species ◽  
Ombrophilous Forest ◽  
Forest Island ◽  
Insular Region

The Marambaia is an important natural refuge for preserving the genetic heritage of several rain forest plant species. In this insular region, where the vegetation types are Lower Montane Rain Forest and restingas (sandy coastal plain habitat), the impressive diversity of Melastomataceae consists of seven genera and 25 species of which 13 represent new records for the area. Miconia is best represented with 10 species, followed by Tibouchina (6 spp.), Leandra (4 spp.), Clidemia (2 spp.) and Huberia, Marcetia and Ossaea (1 sp. each). Most of the species are shrubs or trees and occur in Dense Submontane Ombrophilous Forest. Huberia ovalifolia DC., Leandra acutiflora (Naudin) Cogn. and Leandra melastomoides Raddi are cited in the list of endangered species for the municipality of Rio de Janeiro. An identification key is provided as well as descriptions, illustrations, comments on morphological peculiarities of species, and geographical and phenological data.

Testing pathogen host specificity: a reciprocal field experiment in two types of tropical forest on Hainan, China

2013 ◽  
Vol 29 (6) ◽  
pp. 541-549 ◽  
Author(s):  
Wen Zheng ◽  
He He ◽  
Lin Xiao ◽  
Shixiao Yu
Keyword(s):  
Seed Germination ◽  
Host Specificity ◽  
Tree Species ◽  
Rain Forest ◽  
Forest Type ◽  
Seedling Survival ◽  
Cloud Forest ◽  
Soil Pathogens ◽  
Montane Rain Forest ◽  
Adult Trees

Abstract:The Janzen–Connell hypothesis suggests that highly specific pathogens decrease seedling survival close to the parent plant; however, the underlying mechanism remains unclear. Here, we tested the host specificity of soil pathogens to germinating seeds of Cyclobalanopsis fleuryi and Cryptocarya chinensis in tropical montane rain forest and cloud forest on Hainan, south China. Rhizospheric soils surrounding eight adult trees per species were collected in each forest type and divided into five soil treatments: parent, fungicide-sterilized, autoclave-sterilized, Fusarium-added and Pythium-added soils. Surface-sterilized seeds were sown in each of the five soil treatments and grown in two forest types. The seed germination percentages were significantly higher in sterilized soils (C. fleuryi, 41.5%; C. chinensis, 29.4%) than in non-sterilized soils (C. fleuryi, 28.3%; C. chinensis, 17.1%) in montane rain forest. The seed germination percentages in rhizospheric soil of conspecific parent trees were significantly lower in montane rain forest (C. fleuryi, 17.3%; C. chinensis, 10.5%) than in cloud forest (C. fleuryi, 37.1%; C. chinensis, 21.1%). Our results also suggest that the level of pathogen activity in each tree species varies depending on the environment. Our results support the hypothesis that host-specific pathogens shape tree species composition by differentially affecting seed germination under different environmental conditions.

scholarly journals Mixed rain forest in southeastern Brazil: tree species regeneration and floristic relationships in a remaining stretch of forest near the city of Itaberá, Brazil

2013 ◽  
Vol 27 (1) ◽  
pp. 71-86 ◽  
Author(s):  
Tiago Maciel Ribeiro ◽  
Natália Macedo Ivanauskas ◽  
Sebastião Venâncio Martins ◽  
Rodrigo Trassi Polisel ◽  
Rochelle Lima Ramos dos Santos ◽  
...  
Keyword(s):  
Tree Species ◽  
Rain Forest ◽  
Southeastern Brazil ◽  
The City

scholarly journals Mortality and recruitment of trees in a secondary montane rain forest in Southeastern Brazil

2003 ◽  
Vol 63 (1) ◽  
pp. 47-60 ◽  
Author(s):  
E. P. C. Gomes ◽  
W. Mantovani ◽  
P. Y. Kageyama
Keyword(s):  
Mortality Rate ◽  
Rain Forest ◽  
Population Decline ◽  
Mortality Rates ◽  
Southeastern Brazil ◽  
Montane Rain Forest ◽  
Breast Height ◽  
Species Dynamics ◽  
Partial Shade ◽  
Slow Growing

Mortality and recruitment rates were obtained for tree species over a 5.6 year period in a 1-ha fragment of secondary montane rain forest in Southeastern Brazil. All plants with a diameter at breast height (dbh) > 8 cm were sampled in 1989-1990 and 1995. There was an increase from 90 to 96 species, and 669 ind./ha to 749 ind./ha over the period. The mortality rate of 1.67%/yr was similar to findings for other forests, while recruitment of 3.46%/yr was the highest rate reported. Both mortality and recruitment were significantly higher in the smaller dbh classes. Recruitment was higher among rare species, and the relatively slow-growing species had significantly higher mortality rates. Differences between species dynamics were marked. Species with high values of l were mainly early successional and understorey trees but some understorey species also suffered a marked population decline. The classification system of species in response to light which divides understorey species into "partial shade-bearers" and "shade-bearers" groups showed to be the most suitable to the obtained results. The results suggest that this forest is undergoing a process of recovery from past disturbance.

Tree Species Composition Predicts Epiphytic Lichen Communities in an African Montane Rain Forest

Biotropica ◽  
2015 ◽  
Vol 47 (5) ◽  
pp. 542-549 ◽  
Author(s):  
Andreas Frisch ◽  
Jörgen Rudolphi ◽  
Douglas Sheil ◽  
Alexandro Caruso ◽  
Göran Thor ◽  
...  
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Rain Forest ◽  
Tree Species Composition ◽  
Epiphytic Lichen ◽  
Montane Rain Forest

scholarly journals Fagaceae tree species allocate higher fraction of nitrogen to photosynthetic apparatus than Leguminosae in Jianfengling tropical montane rain forest, China

PLoS ONE ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. e0192040 ◽  
Author(s):  
Jingchao Tang ◽  
Ruimei Cheng ◽  
Zuomin Shi ◽  
Gexi Xu ◽  
Shirong Liu ◽  
...  
Keyword(s):  
Tree Species ◽  
Rain Forest ◽  
Photosynthetic Apparatus ◽  
Montane Rain Forest

The importance of wood density in determining the phenology of tree species in a coastal rain forest

Biotropica ◽  
2021 ◽  
Author(s):  
Fernanda Gomes Galvão ◽  
André Luiz Alves de Lima ◽  
Clemir Candeia de Oliveira ◽  
Valdemir Fernando Silva ◽  
Maria Jesus Nogueira Rodal
Keyword(s):  
Wood Density ◽  
Tree Species ◽  
Rain Forest

Ecological processes maintaining differential tree species distributions in an Australian subtropical rain forest: implications for models of species coexistence

2000 ◽  
Vol 16 (3) ◽  
pp. 387-415 ◽  
Author(s):  
Igor Debski ◽  
David F. R. P. Burslem ◽  
David Lamb
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Rain Forest ◽  
Large Scale ◽  
Species Coexistence ◽  
Common Species ◽  
Size Class ◽  
Differential Mortality ◽  
Mixed Composition ◽  
Large Scale Disturbance

All stems ≥ 1 cm dbh were measured, tagged, mapped and identified on a 1-ha plot of rain forest at Gambubal State Forest, south-east Queensland, Australia. The spatial patterns and size class distributions of 11 common tree species on the plot were assessed to search for mechanisms determining their distribution and abundance. The forest was species-poor in comparison to many lowland tropical forests and the common species are therefore present at relatively high densities. Despite this, only limited evidence was found for the operation of density-dependent processes at Gambubal. Daphnandra micrantha saplings were clumped towards randomly spaced adults, indicating a shift of distribution over time caused by differential mortality of saplings in these adult associated clumps. Ordination of the species composition in 25-m × 25-m subplots revealed vegetation gradients at that scale, which corresponded to slope across the plot. Adult basal area was dominated by a few large individuals of Sloanea woollsii but the comparative size class distributions and replacement probabilities of the 11 common species suggest that the forest will undergo a transition to a more mixed composition if current conditions persist. The current cohort of large S. woollsii individuals probably established after a large-scale disturbance event and the forest has not attained an equilibrium species composition.

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