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

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.

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 Soil Protists in Three Neotropical Rainforests are Hyperdiverse and Dominated by Parasites

2016 ◽  
Author(s):  
Frédéric Mahé ◽  
Colomban de Vargas ◽  
David Bass ◽  
Lucas Czech ◽  
Alexandros Stamatakis ◽  
...  
Keyword(s):  
Terrestrial Ecosystems ◽  
Tree Diversity ◽  
Tropical Tree ◽  
Tropical Rainforests ◽  
Dependent Manner ◽  
Unicellular Eukaryotes ◽  
Animal Diversity ◽  
Specific Manner ◽  
Neotropical Rainforest ◽  
Soil Protists

ABSTRACTAnimal and plant richness in tropical rainforests has long intrigued naturalist. More recent work has revealed that parasites contribute to high tropical tree diversity (Bagchi et al., 2014; Terborgh, 2012) and that arthropods are the most diverse eukaryotes in these forests (Erwin, 1982; Basset et al., 2012). It is unknown if similar patterns are reflected at the microbial scale with unicellular eukaryotes or protists. Here we show, using environmental metabarcoding and a novel phylogeny-aware cleaning step, that protists inhabiting Neotropical rainforest soils are hyperdiverse and dominated by the parasitic Apicomplexa, which infect arthropods and other animals. These host-specific protist parasites potentially contribute to the high animal diversity in the forests by reducing population growth in a density-dependent manner. By contrast, we found too few Oomycota to broadly drive high tropical tree diversity in a host-specific manner under the Janzen-Connell model (Janzen, 1970; Connell, 1970). Extremely high OTU diversity and high heterogeneity between samples within the same forests suggest that protists, not arthropods, are the most diverse eukaryotes in tropical rainforests. Our data show that microbes play a large role in tropical terrestrial ecosystems long viewed as being dominated by macro-organisms.Contact: [email protected]

On the causes of gradients in tropical tree diversity

1999 ◽  
Vol 87 (2) ◽  
pp. 193-210 ◽  
Author(s):  
Thomas J. Givnish
Keyword(s):  
Tree Diversity ◽  
Tropical Tree
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