Typhoon Disturbance Mediates Elevational Patterns of Forest Structure, but not Species Diversity, in Humid Monsoon Asia

Ecosystems ◽  
2015 ◽  
Vol 18 (8) ◽  
pp. 1410-1423 ◽  
Author(s):  
Chung-How Chi ◽  
Ryan W. McEwan ◽  
Chung-Te Chang ◽  
Chengyang Zheng ◽  
Zhijie Yang ◽  
...  
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Monsoon Asia ◽  
Typhoon Disturbance

Forest structure as a predictor of tree species diversity in the North Carolina Piedmont

2016 ◽  
Vol 27 (6) ◽  
pp. 1151-1163 ◽  
Author(s):  
Christopher R. Hakkenberg ◽  
Conghe Song ◽  
Robert K. Peet ◽  
Peter S. White
Keyword(s):  
North Carolina ◽  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
Tree Species Diversity ◽  
The North ◽  
North Carolina Piedmont

scholarly journals Forest Structure and Tree Species Diversity along an Altitudinal Gradient in Doi Inthanon National Park, Northern Thailand

Tropics ◽  
2003 ◽  
Vol 12 (2) ◽  
pp. 85-102 ◽  
Author(s):  
Sakhan TEEJUNTUK ◽  
Pongsak SAHUNALU ◽  
Katsutoshi SAKURAI ◽  
Witchaphart SUNGPALEE
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
National Park ◽  
Altitudinal Gradient ◽  
Tree Species Diversity ◽  
Northern Thailand ◽  
Doi Inthanon

scholarly journals Dominant Species Abundance, Vertical Structure and Plant Diversity Response to Nature Forest Protection in Northeastern China: Conservation Effects and Implications

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 295 ◽  
Author(s):  
Yuanyuan Wang ◽  
Jinghua Yu ◽  
Lu Xiao ◽  
Zhaoliang Zhong ◽  
Qiong Wang ◽  
...  
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Structural Equation ◽  
Dominant Species ◽  
Tree Density ◽  
Equation Modeling ◽  
Forest Protection ◽  
Natural Reserve ◽  
The Impact

The conservation of species diversity and improvement of forest structure are essential roles of the Natural Reserve Policy and the Natural Forest Protection Program (NFPP) in China. However, the long-term effects of NFPP are still not well-defined, and a natural reserve (Liangshui) and surrounding region were surveyed as a proxy of NFPP for approaching the protection effects. Our results showed that long-term conservation significantly altered the dominant species in the herb layer (80% of species), followed by shrub (58%) and tree layers (50%); there was a 1.6-8.0-fold increase in abundance in Corylus shrubs, Acer trees and Carex grass, but a 1.3–10.0-fold abundance decrease in larch trees, Athyrium herbs and Lonicera shrubs. In contrast, tree species diversity and distribution evenness increased by 31% and 23.4% in the reserve, respectively. Forest protection in the reserve also led to the forest structural alteration with the observation of larger-sized trees and shorter herbs, but relatively sparse forests (smaller tree density). Structural equation modeling manifested that the reserve directly altered forest structure, at a coefficient of 0.854, nearly two-fold higher than its impact on diversity (0.459) and dominant species (−0.445). The most affected parameters were plant size (trees and herbs) and tree density related to forest structure, tree diversity, herb richness and evenness for diversity traits, and Oxalidaceae and Rosaceae for dominant species. This study provides basic data that can be used to evaluate the impact of the nature reserve in NE China, and these findings can be used to guide the implementation of NFPP in the long-term in the future.

scholarly journals Tree species diversity in a seasonally-dry forest: the case of the Pinkaití site, in the Kayapó Indigenous Area, Southeastern limits of the Amazon

2004 ◽  
Vol 34 (3) ◽  
pp. 435-443 ◽  
Author(s):  
Rodolfo Salm
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
Natural Disturbance ◽  
Dry Forest ◽  
Research Station ◽  
Tree Species Diversity ◽  
Seasonally Dry ◽  
Great Heterogeneity ◽  
History Of

This study investigates patterns of forest structure and tree species diversity in an anthropogenic palm grove and undisturbed areas at the seasonally-dry Pinkaití research station, in the Kayapó Indigenous Area. This site, managed by the Conservation International do Brasil, is the most southeastern site floristically surveyed in the Amazon until now. The secondary and a nearby undisturbed forest were sampled in a group of 52 floristic plots of 0.0625-ha (25x25-m) where all trees with DBH > 10 cm were measured and identified. The analyses were complemented with other two floristic plots of 1-ha (10x1000-m). The present study has shown that the Pinkaití, like other seasonally-dry forests, have great heterogeneity in forest structure and composition, associated with biotic characteristics of the most important tree species, natural disturbance and history of land-use. The palm grove, moderately dominated by the arborescent palm Attalea maripa (Aubl.) Mart., presented high tree species diversity and was floristically similar to undisturbed forests at the study site. It is discussed the importance of large arborescent palms for the seasonally-dry Amazon forests regeneration.

Species diversity, forest structure and species composition in Tanzanian tropical forests

2003 ◽  
Vol 173 (1-3) ◽  
pp. 11-24 ◽  
Author(s):  
Wending Huang ◽  
Veli Pohjonen ◽  
Stig Johansson ◽  
Michael Nashanda ◽  
M.I.L. Katigula ◽  
...  
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Tropical Forests ◽  
Forest Structure

scholarly journals Forest Structure and Composition under Contrasting Precipitation Regimes in the High Mountains, Western Nepal

2021 ◽  
Vol 13 (13) ◽  
pp. 7510
Author(s):  
Kishor Prasad Bhatta ◽  
Anisha Aryal ◽  
Himlal Baral ◽  
Sujan Khanal ◽  
Amul Kumar Acharya ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
Canopy Cover ◽  
High Mountains ◽  
Precipitation Region ◽  
Precipitation Regimes ◽  
High Precipitation ◽  
Low Precipitation

The high mountains stretch over 20.4% of Nepal’s land surface with diverse climatic conditions and associated vegetation types. An understanding of tree species and forest structural pattern variations across different climatic regions is crucial for mountain ecology. This study strived to carry out a comparative evaluation of species diversity, main stand variables, and canopy cover of forests with contrasting precipitation conditions in the Annapurna range. Firstly, climate data provided by CHELSA version 1.2, were used to identify distinct precipitation regimes. Lamjung and Mustang were selected as two contrasting precipitation regions, and have average annual precipitation of 2965 mm and 723 mm, respectively. Stratified random sampling was used to study 16 plots, each measuring 500 m2 and near the tree line at an elevation range of 3000 to 4000 m across different precipitation conditions. In total, 870 trees were identified and measured. Five hemispherical photos using a fisheye lens were taken in each plot for recording and analyzing canopy cover. Margalef’s index was used to measure species richness, while two diversity indices: the Shannon–Wiener Index and Simpson Index were used for species diversity. Dominant tree species in both study regions were identified through the Important Value Index (IVI). The Wilcoxon rank-sum test was employed to determine the differences in forest structure and composition variables between the two precipitation regimes. In total, 13 species were recorded with broadleaved species predominating in the high precipitation region and coniferous species in the low precipitation region. Higher species richness and species diversity were recorded in the low precipitation region, whereas the main stand variables: basal area and stem density were found to be higher in the high precipitation region. Overall, an inverse J-shaped diameter distribution was found in both precipitation regions signifying uneven-aged forest. A higher proportion of leaning and buttressed trees were recorded in the high precipitation region. However, similar forest canopy cover conditions (>90%) were observed in both study regions. The findings of this research provide a comprehensive narrative of tree species and forest structure across distinct precipitation regimes, which can be crucial to administrators and local people for the sustainable management of resources in this complex region.

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