https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8339.2012.01235.x

A new subfamilial and tribal classification of the pantropical flowering plant family Annonaceae informed by molecular phylogenetics

Summary


1
The relative importance of niche- and dispersal-mediated processes in structuring diverse tropical plant communities remains poorly understood. Here, we link mesoscale beta diversity to soil variation throughout a lowland Bornean watershed underlain by alluvium, sedimentary and granite parent materials (c. 340 ha, 8–200 m a.s.l.). We test the hypothesis that species turnover across the habitat gradient reflects interspecific partitioning of soil resources.

2
Floristic inventories (≥ 1 cm d.b.h.) of the Dipterocarpaceae, the dominant Bornean canopy tree family, were combined with extensive soil analyses in 30 (0.16 ha) plots. Six samples per plot were analysed for total C, N, P, K, Ca and Mg, exchangeable K, Ca and Mg, extractable P, texture, and pH.

3
Extractable P, exchangeable K, and total C, N and P varied significantly among substrates and were highest on alluvium. Thirty-one dipterocarp species (n = 2634 individuals, five genera) were recorded. Dipterocarp density was similar across substrates, but richness and diversity were highest on nutrient-poor granite and lowest on nutrient-rich alluvium.

4
Eighteen of 22 species were positively or negatively associated with parent material. In 8 of 16 abundant species, tree distribution (≥ 10 cm d.b.h.) was more strongly non-random than juveniles (1–10 cm d.b.h.), suggesting higher juvenile mortality in unsuitable habitats. The dominant species Dipterocarpus sublamellatus (> 50% of stems) was indifferent to substrate, but nine of 11 ‘subdominant’ species (> 8 individuals ha−1) were substrate specialists.

5
Eighteen of 22 species were significantly associated with soil nutrients, especially P, Mg and Ca. Floristic variation was significantly correlated with edaphic and geographical distance for all stems ≥ 1 cm d.b.h. in Mantel analyses. However, juvenile variation (1–10 cm d.b.h.) was more strongly related to geographical distance than edaphic factors, while the converse held for established trees (≥ 10 cm d.b.h.), suggesting increased importance of niche processes with size class.

6
Pervasive dipterocarp associations with soil factors suggest that niche partitioning structures dipterocarp tree communities. Yet, much floristic variation unrelated to soil was correlated with geographical distance between plots, suggesting that dispersal and niche processes jointly determine mesoscale beta diversity in the Bornean Dipterocarpaceae.

/pdf/soil-nutrients-and-beta-diversity-in-the-bornean-4h3lvh5ygo.pdf

Soil nutrients and beta diversity in the Bornean Dipterocarpaceae: evidence for niche partitioning by tropical rain forest trees

http://www.lerf.esalq.usp.br/divulgacao/recomendados/artigos/liebsch2008.pdf

How long does the Atlantic Rain Forest take to recover after a disturbance? Changes in species composition and ecological features during secondary succession

This edition Þr st published 2008©2008 by Blackw ell Publishing LtdBlackw ell Publishing w as acquired by John W iley & Sons in Febr uar y 2007. Blackw ellOs publishing pro g ram has beenmerg ed with W ileyOs global ScientiÞc ,Technical and Medical business to for m W iley-Blackw ell.R egister ed ofÞceJohn W iley & Sons Ltd, The Atrium, Souther n Ga te,Chichester ,W est Susse x, PO19 8SQ ,UK.Editorial ofÞces9600 Gar sington R oad, Oxford, O X 4 2DQ ,U KThe Atrium, Souther n Ga te,Chichester ,W est Susse x, PO19 8SQ ,U K111 Ri ver Street, Hobok en, NJ 07030-5774, USAFor details of our global editorial ofÞces, for customer ser vices and for infor ma tion about ho w to appl y for per missionto reuse the cop yright ma terial in this book please see our w ebsite at www .wile y.com/wile y-blackw ell.The right of the W alter P.Car son and Stef an A .Schnitz er to be identiÞed as the author of this w ork has been asser tedin accordance with the Cop yright, De signs and P atents Act 1988.All rights reser ved. No par t of this publica tion ma y be reproduced, stored in a retriev alsystem, or transmitted, in an yfor m or by an y means, electronic ,m echanical, photocop ying ,recording or otherwise ,except as per mitted by the UKCop yright, Designs and P atents Act 1988, without the prior per mission of the publisher .W iley also publishes its books in a variety of electronic for ma ts. Some content tha t appear s in print ma y not beavaila ble in electronic books.Designa tions used by companies to distinguish their products are often claimed as trademarks. All br and names andproduct names used in this book are trade names, ser vice marks, trademarks or registered trademarks of theirrespecti ve owner s.The publisher is not associa ted with an y product or vendor mentioned in this book. Thispublica tion is designed to pro vide accur ate and authorita tive infor ma tion in reg ard to the subject ma tter covered. It issold on the under standing tha t the publisher is not eng aged in rendering prof essional ser vices. If prof essional ad viceor other exper t assistance is required, the ser vices of a competent prof essional should be sought.Libr ary of Congr ess Cataloging-in-Pub lication DataDa ta availa bleISBN: 978-1-4051-1897-2 (pa perback)A catalo gue re cord for this book is availa ble from the British Libr ar y.Set in 9/11 pt Photina by Newg en Ima ging Systems Pvt. Ltd, Chennai, IndiaPrinte d in Sing apore by Ho Printing Pte Ltd1 2008

/pdf/tropical-forest-community-ecology-155jfw905h.pdf

Tropical forest community ecology

Summary

•
Relatively little is known about diversity or structure of tropical ectomycorrhizal communities or their roles in tropical ecosystem dynamics. In this study, we present one of the largest molecular studies to date of an ectomycorrhizal community in lowland dipterocarp rainforest.

•
We sampled roots from two 0.4 ha sites located across an ecotone within a 52 ha forest dynamics plot. Our plots contained > 500 tree species and > 40 species of ectomycorrhizal host plants. Fungi were identified by sequencing ribosomal RNA genes.

•
The community was dominated by the Russulales (30 species), Boletales (17), Agaricales (18), Thelephorales (13) and Cantharellales (12). Total species richness appeared comparable to molecular studies of temperate forests. Community structure changed across the ecotone, although it was not possible to separate the role of environmental factors vs host plant preferences. Phylogenetic analyses were consistent with a model of community assembly where habitat associations are influenced by evolutionary conservatism of functional traits within ectomycorrhizal lineages.

•
Because changes in the ectomycorrhizal fungal community parallel those of the tree community at this site, this study demonstrates the potential link between the distribution of tropical tree diversity and the distribution of tropical ectomycorrhizal diversity in relation to local-scale edaphic variation.

https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.2009.03075.x

Potential link between plant and fungal distributions in a dipterocarp rainforest: community and phylogenetic structure of tropical ectomycorrhizal fungi across a plant and soil ecotone

Aim To (1) identify floristic regions in the lowland (below 500 m a.s.l.) tropical dipterocarp rain forest of Borneo based on tree genera, (2) determine the characteristic taxa of these regions, (3) study tree diversity patterns within Borneo, and (4) relate the floristic and diversity patterns to abiotic factors such as mean annual rainfall and geographical distance between plots. Location Lowland tropical dipterocarp rain forest of Borneo. Methods We used tree (diameter at breast height ‡ 9.8 cm) inventory data from 28 lowland dipterocarp rain forest locations throughout Borneo. From each location six samples of 640 individuals were drawn randomly. With these data we calculated a Sorensen and Steinhaus similarity matrix for the locations. These matrices were then used in an UPGMA clustering algorithm to determine the floristic relations between the locations (dendrogram). Principal coordinate analysis was used to ordinate the locations. Characteristic taxa for the identified floristic clusters were determined with the use of the INDVAL method of Dufrene & Legendre (1997). Finally, Mantel analysis was applied to determine the influence of mean annual rainfall and geographical distance between plots on floristic composition.

I. Lanniari

Papers

A floristic analysis of the lowland dipterocarp forests of Borneo