Estimating tropical tree diversity indices from forestry surveys: A method to integrate taxonomic uncertainty

2014 ◽  
Vol 328 ◽  
pp. 270-281 ◽  
Author(s):  
Stéphane Guitet ◽  
Daniel Sabatier ◽  
Olivier Brunaux ◽  
Bruno Hérault ◽  
Mélaine Aubry-Kientz ◽  
...  
Keyword(s):  
Diversity Indices ◽  
Tree Diversity ◽  
Tropical Tree ◽  
Taxonomic Uncertainty

scholarly journals Tropical tree diversity enhances light capture through crown plasticity and spatial and temporal niche differences

Ecology ◽  
2014 ◽  
Vol 95 (9) ◽  
pp. 2479-2492 ◽  
Author(s):  
Jurgis Sapijanskas ◽  
Alain Paquette ◽  
Catherine Potvin ◽  
Norbert Kunert ◽  
Michel Loreau
Keyword(s):  
Tree Diversity ◽  
Tropical Tree ◽  
Temporal Niche ◽  
Crown Plasticity ◽  
Niche Differences ◽  
Light Capture

scholarly journals Tropical tree diversity mediates foraging and predatory effects of insectivorous birds

2018 ◽  
Vol 285 (1890) ◽  
pp. 20181842 ◽  
Author(s):  
Colleen S. Nell ◽  
Luis Abdala-Roberts ◽  
Victor Parra-Tabla ◽  
Kailen A. Mooney
Keyword(s):  
Species Richness ◽  
Indirect Effect ◽  
Tree Species ◽  
Attack Rate ◽  
Tree Diversity ◽  
Trophic Levels ◽  
Tropical Tree ◽  
Insectivorous Birds ◽  
Bird Abundance ◽  
Tree Species Richness

Biodiversity affects the structure of ecological communities, but little is known about the interactive effects of diversity across multiple trophic levels. We used a large-scale forest diversity experiment to investigate the effects of tropical tree species richness on insectivorous birds, and the subsequent indirect effect on predation rates by birds. Diverse plots (four tree species) had higher bird abundance (61%), phylogenetic diversity (61%), and functional diversity (55%) than predicted based on single-species monocultures, which corresponded to higher attack rates on artificial caterpillars (65%). Tree diversity effects on attack rate were driven by complementarity among tree species, with increases in attack rate observed on all tree species in polycultures. Attack rates on artificial caterpillars were higher in plots with higher bird abundance and diversity, but the indirect effect of tree species richness was mediated by bird diversity, providing evidence that diversity can interact across trophic levels with consequences tied to ecosystem services and function.

scholarly journals Disentangling the Relationship between Tree Biomass Yield and Tree Diversity in Mediterranean Mixed Forests

2021 ◽  
Author(s):  
Felipe Bravo ◽  
Ana Martin Ariza ◽  
Narangarav Dugarsuren ◽  
Cristóbal Ordóñez
Keyword(s):  
Ecosystem Services ◽  
Biomass Yield ◽  
Structural Diversity ◽  
Diversity Indices ◽  
Pinus Nigra ◽  
Tree Diversity ◽  
Tree Age ◽  
Tree Biomass ◽  
Species Identity ◽  
As Species

Tree biomass and diversity relationship in mixed forest impacts on forest ecosystem services provisions. Tree biomass yield is driven by several aspects such as species identity, site condition, stand density, tree age as well as tree diversity expressed as species mingling and structural diversity. By comparing diverse degrees of tree mixture in natural forests we can insight on the ecosystem services provision level and dynamic. Two monitoring sites in the Castilian Northern Plateau (Spain) have been analyzed to disentangle the relationships between biodiversity levels and tree biomass yield. Two permanent one ha squared plots were established at Llano de San Marugan and Valdepoza. In each plot all individual trees were measured (diameter and height), georeferenced and its species identity defined. Tree species in the two sites were Pinus sylvestris, Pinus nigra, Pinus pinea, Quercus pyrenaica, Quercus ilex, Quercus faginea and Juniperus thurifera. From these datasets ten diversity indices that fall in three categories (species richness indices, species compositional/mingling indices and vertical structural indices) were used as predictor variables to fit several candidate models. By merging the trees by site (without considering the species identity) selected models include individual tree basal area as explanatory variable combining by addition or interaction with diversity indices. When species are analyzed independently structural diversity impacts on biomass yield in combination (additive or multiplicative) with tree size is negative Pinus nigra and positive for the other species.

scholarly journals Ecological exploration of Kuwana forest: A tropical moist deciduous forest of eastern Terai, India

2017 ◽  
Vol 6 (12) ◽  
pp. 1811 ◽  
Author(s):  
Omesh Bajpai ◽  
Shraddha Suman ◽  
Nirmala Upadhyay
Keyword(s):  
Tree Species ◽  
Deciduous Forest ◽  
Uttar Pradesh ◽  
Principal Component ◽  
Diversity Indices ◽  
Tree Diversity ◽  
Forest Community ◽  
Importance Value Index ◽  
Importance Value ◽  
Lowland Forest

The present study was conducted in the Kuwana forest of Gonda forest division in Uttar Pradesh to explore its ecological inventories. Random stratified sampling was adopted to collect the basic information like frequency, density and abundance for the calculation of importance value index (IVI). On the basis of principal component analysis (PCA) plot, three forest communities were identified and named as, Syzygium Lowland Forest (SLF), Shorea Miscellaneous Forest (SMF) and Mallotus Miscellaneous Forest (MMF). MMF community allowed the maximum 39 while SLF minimum 18 tree species growing in it. Conversely, SMF community showed higher heterogeneous tree diversity validated by lower Dominance index (0.088) and higher Simpson index (0.912). The values of these two indices were found very low in comparison with their range for tropical forests of India. On the otherhand the diversity indices (Shannon & Fisher alpha) was calculated as maximum (2.797 & 11.960 respectively) for MMF community, which indicates the existence of better tree diversity in this forest community. The higher values of Evenness & Equitability indices (0.646 & 0.859 respectively) for SMF community showed the more evenly distribution of tree species in this community.

scholarly journals Drivers of productivity and its temporal stability in a tropical tree diversity experiment

2019 ◽  
Vol 25 (12) ◽  
pp. 4257-4272 ◽  
Author(s):  
Florian Schnabel ◽  
Julia A. Schwarz ◽  
Adrian Dănescu ◽  
Andreas Fichtner ◽  
Charles A. Nock ◽  
...  
Keyword(s):  
Temporal Stability ◽  
Tree Diversity ◽  
Tropical Tree
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