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Integrated dataset of anatomical, morphological, and architectural traits for plant species in Madagascar

Authors:

Abstract

In this work, we present a dataset, which provides information on the structural diversity of some endemic tropical species in Madagascar. The data were from CIRAD xylotheque (since 1937), and were also collected during various fieldworks (since 1964). The field notes and photographs were provided by French botanists; particularly by Francis Hallé. The dataset covers 250 plant species with anatomical, morphological, and architectural traits indexed from digitized wood slides and fieldwork documents. The digitized wood slides were constituted by the transverse, tangential, and radial sections with three optical magnifications. The main specific anatomical traits can be found within the digitized area. Information on morphological and architectural traits were indexed from digitized field drawings including notes and photographs. The data are hosted in the website ArchiWood (http://archiwood.cirad.fr).
Data Article
Integrated dataset of anatomical, morphological,
and architectural traits for plant species
in Madagascar
Amira Azizan
a
, Emma Guillon
a
, Yves Caraglio
c
,
Patrick Langbour
b
, Sébastien Paradis
b
, Pierre Bonnet
c
,
Yannick Brohard
c
, Christine Heinz
c
, Nabila Boutahar
b
,
Loïc Brancheriau
b,
n
a
University of Montpellier, Dept. of Biodiversity, Ecology and Evolution, Montpellier, France
b
CIRAD, UR BioWooEB, 34398, Montpellier, France
c
CIRAD, UMR AMAP, 34398, Montpellier, France
article info
Article history:
Received 7 July 2017
Accepted 5 September 2017
Available online 12 September 2017
Keywords:
Morpho-architectural traits
Plant architecture
Wood anatomy
Madagascar
abstract
In this work, we present a dataset, which provides information on
the structural diversity of some endemic tropical species in
Madagascar. The data were from CIRAD xylotheque (since 1937),
and were also collected during various eldworks (since 1964).
The eld notes and photographs were provided by French bota-
nists; particularly by Francis Hallé. The dataset covers 250 plant
species with anatomical, morphological, and architectural traits
indexed from digitized wood slides and eldwork documents. The
digitized wood slides were constituted by the transverse, tangen-
tial, and radial sections with three optical magnications. The main
specic anatomical traits can be found within the digitized area.
Information on morphological and architectural traits were
indexed from digitized eld drawings including notes and photo-
graphs. The data are hosted in the website ArchiWood (http://
archiwood.cirad.fr).
&2017 The Authors. Published by Elsevier Inc. This is an open
access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
Contents lists available at ScienceDirect
journal homepage: www.elsevier.com/locate/dib
Data in Brief
http://dx.doi.org/10.1016/j.dib.2017.09.004
2352-3409/&2017 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
n
Corresponding author.
E-mail address: loic.brancheriau@cirad.fr (L. Brancheriau).
Data in Brief 15 (2017) 9296
Specications Table
Subject area Botany
More specic
subject area
Anatomy, morphology and architecture of plant species
Type of data Tables of anatomical traits and morpho-architectural traits
Images of microscope slides for wood anatomy
Field drawings with notes
Photographs
How data was
acquired
Microscope
Field observations
Data format Tables in MSExcel format *.xlsx
Images of microscope slides in 24-bit RGB TIFF (1600×1200 pixels)
Digitized eld drawings and notes in 24-bit RGB JPG (300 dpi)
Scanned photographs of 24×36 mm format in 24-bit RGB JPG (600 dpi)
Experimental
factors
Experimental
features
Data source
location
Madagascar
Data accessibility Data package title: ArchiWood dataset
Resource link: http://archiwood.cirad.fr
Identier: doi:10.18167/archiwood/1
Usage rights: Creative Commons Attribution NonCommercial ShareAlike
4.0 International (CC BY-SA-NC 4.0)
Value of the data
The dataset consolidates anatomical, morphological, and architectural traits of plant species from
different sources (xylotheque, eld notes, and photographs).
The described traits of tropical plant species can be useful to understand the biogeographical
variation within species and genera in plant anatomy regarding the ontogeny and structure of
sampled plants.
To understand the diversity of wood characteristics and technological behaviors that directly
governed the choice of tropical timber use.
To understand the relationship between tropical wood structure and certain physical, mechanical,
chemical, and biological properties of the material.
1. Data
Madagascar is an important insular hotspot for biodiversity conservation [11]. More than 80% of
the currently known ora species are endemic to the island [4]. Endemic tropical species in Mada-
gascar are well known for its important value in ecology and economy but are predicted to face mass
extinction in the near future because of global warming and deforestation [2,3]. Identication of
Malagasy vascular plant species was documented and can be accessed via the website Tropicos
(Madagascar catalogue, http://www.tropicos.org/Project/Madagascar).
The architectural analysis on tropical species as described by [1,7,8] emphasize on the dynamics of
growth and structure of a plant species in the competitive nature of the forest, thereby conforming to
its architectural model. Recent studies of plant architecture may not only provide complimentary
information for species-level identication purposes, but also for understanding plant structure
A. Azizan et al. / Data in Brief 15 (2017) 9296 93
evolution within a clade [10] and their ecological strategies [5,6]. Together with stem anatomy, archi-
tectural variations involving the branching process, rhythmicity, and orientation can be comparatively
analyzed to study the evolution of growth in both temporal and spatial contexts [9].Thisapproachcan
also provide guidelines for tree selection and management in agroforestry practices [12].
The dataset gathers anatomical, morphological, and architectural traits of endemic plant species.
The aims is to promote and to make more accessible for scientic and public use a specic part of the
CIRAD wood collection and unpublished morpho-architectural data from Madagascar. More than
1000 microscopic anatomical wood slides, exclusively available in this open access dataset, were
sampled since the early 20th century and compiled with more than 500 digitized eld notes such as
botanical illustrations and photographs. Because diagrammatic representations of morpho-archi-
tectural traits are essential to assess plant structure and growth, digitized illustrations provided here
may serve as a reference for future architectural analysis and application. Metadata from approxi-
mately 250 indexed plant species also provide new insights to species identication and scientic
research, such as in functional ecology or systematics as well as for forest conservation management.
2. Experimental design, materials and methods
2.1. Microscopic structure of wood
For each species, three microscope slides were prepared consisting of transverse, tangential, and
radial sections (Fig. 1). The slides were then digitized using a camera Olympus DP71 mounted onto a
microscope Olympus BX60. Each slide was digitized with three optical magnications: ×40, ×10 0,
and×200. The images (1600×1200 pixels) were then processed by Archimed Microvision® software
and stored in 24-bit RGB TIFF. Within each image, the main specic anatomical traits can be found,
and these traits were indexed following the List of Microscopic Features for Hardwood Identication
from the IAWA (http://iawa-website.org/).
2.2. Morphology and architecture of plant structure
Information on morphological and architectural traits were indexed from illustrations of digitized
eld notes (300 dpi 24-bit RGB JPEG) (Fig. 2) and scanned photographs of 24×36 mm format (600 dpi,
24-bit RGB JPEG) from various researches in Madagascar, for extended visual information. The traits
were indexed following the modalities as reviewed in [1,7,8]. Both anatomical and morphological
traits may not apply to all of the species available in the dataset.
2.3. Temporal coverage
Concerning the wood collection, the anatomical slides were sampled since 1937. The eld notes
were reported since 1964 for the photographs, and since 1970 for the illustrations. Each document
Fig. 1. Digitized wood slides highlighting anatomical traits. From left to right: transverse (×40), tangential (×100) and radial
(×200) sections of Givotia madagascariensis Baill.
A. Azizan et al. / Data in Brief 15 (2017) 929694
was digitized and indexed between June 2015 and the end of 2016. This information were never
published.
2.4. Taxonomic coverage
The dataset gathered information on 102 families and 244 genera of angiosperm species (with the
addition of a bryophyte). For these species, the updated taxonomic names were provided and
retrieved from The Plant List (http://www.theplantlist.org/). Some traits were specied at the family
or genus level.
Funding
This work was supported by the French Digital Scientic Library (BSN5, 2014, ArchiWood project).
Acknowledgements
The authors would like to thank Laurence Dedieu (Cirad, Dist) for her valuable comments that
helped us to improve this article.
Transparency document. Supplementary material
Transparency data associated with this article can be found in the online version at http://dx.doi.
org/10.1016/j.dib.2017.09.004.
Fig. 2. Fieldwork illustrations of morpho-architectural traits. Diagrammatic representation of Givotia madagascariensis Baill for
whole plant (left) and branching system (right).
A. Azizan et al. / Data in Brief 15 (2017) 9296 95
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