Publications by authors named "J J Loumeto"

Marantaceae forests are tropical rainforests characterized by a continuous understory layer of perennial giant herbs and a near absence of tree regeneration. Although widespread in West-Central Africa, Marantaceae forests have rarely been considered in the international literature. Yet, they pose key challenges and opportunities for theoretical ecology that transcend the borders of the continent.

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The world's largest tropical peatland lies in the central Congo Basin. Raphia laurentii De Wild, the most abundant palm in these peatlands, forms dominant to mono-dominant stands across approximately 45% of the peatland area. R.

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Data capturing multiple axes of tree size and shape, such as a tree's stem diameter, height and crown size, underpin a wide range of ecological research-from developing and testing theory on forest structure and dynamics, to estimating forest carbon stocks and their uncertainties, and integrating remote sensing imagery into forest monitoring programmes. However, these data can be surprisingly hard to come by, particularly for certain regions of the world and for specific taxonomic groups, posing a real barrier to progress in these fields. To overcome this challenge, we developed the Tallo database, a collection of 498,838 georeferenced and taxonomically standardized records of individual trees for which stem diameter, height and/or crown radius have been measured.

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In tropical forests, the high proportion of trees showing irregularities at the stem base complicates forest monitoring. For example, in the presence of buttresses, the height of the point of measurement (H ) of the stem diameter (D ) is raised from 1.3 m, the standard breast height, up to a regular part of the stem.

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Article Synopsis
  • Africa faces significant climate change and population growth that poses a threat to its rainforests, requiring better understanding of forest composition and their vulnerability to change.
  • Using a large dataset of 6 million trees, researchers modeled the distribution of dominant tree species in central Africa, revealing patterns in forest composition across different climates and soils.
  • Findings indicate the northern and southern margins of forests are particularly vulnerable to climate and human-induced changes by 2085, providing essential data for conservation efforts.
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