Browsing by Autor "Susanne S. Renner"

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A New Miconia (Melastomataceae) from Bolivia, with Remarks on Angular-Branched Species in the Andes
(Missouri Botanical Garden Press, 2003) Susanne S. Renner; Stephan Beck
A new species of Melastomataceae from Bolivia is described, illustrated, and placed in a phenetic context within Miconia, a genus of 1000 species and about 2000 published names.Miconia quadrialata is readily distinguished from its con¬ geners by two-colored leaves and sharply four-an¬ gular and winged branchlets.A search for quadrangular-branched miconias revealed that 12 of 15 such species (in four sections), including the new species, occur in cloud forest in the Andes, raising the question of the adaptive significance of qua¬ drangular branchlets.
Consistent climatic controls of global wood density among angiosperms and gymnosperms
(2024) Lidong Mo; Thomas W. Crowther; Daniel S. Maynard; Johan van den Hoogen; Haozhi Ma; Lalasia Bialic‐Murphy; Susanne S. Renner; Jingjing Liang; Sergio de‐Miguel; G.J. Nabuurs
<title>Abstract</title> The density of wood is a key indicator of trees’ carbon investment strategies, impacting productivity and carbon storage. Despite its importance, the global variation in wood density and its environmental controls remain poorly understood, preventing accurate predictions of global forest carbon stocks. Here, we analyze information from 1.1 million forest inventory plots alongside wood density data from 10,703 tree species to create a spatially-explicit understanding of the global wood density distribution and its drivers. Our findings reveal a pronounced latitudinal gradient, with wood in tropical dry forests being up to twice as dense as that in boreal forests. In both angiosperms and gymnosperms, temperature and water availability emerged as the primary factors influencing the variation in wood density globally. This indicates similar environmental filters and evolutionary adaptations among distinct plant groups, underscoring the essential role of abiotic factors in determining wood density in forest ecosystems. Additionally, our study highlights the prominent role of disturbance, such as human modification and fire risk, in influencing wood density at more local scales. Factoring in the spatial variation of wood density notably changes the estimates of forest carbon stocks, leading to differences of up to 21% within biomes. Therefore, our research contributes to a deeper understanding of terrestrial biomass distribution and how environmental changes and disturbances impact forest ecosystems.
Integrated global assessment of the natural forest carbon potential
(Nature Portfolio, 2023) Lidong Mo; Constantin M. Zohner; Peter B. Reich; Jingjing Liang; Sergio de‐Miguel; G.J. Nabuurs; Susanne S. Renner; Johan van den Hoogen; Arnan Araza; Martin Herold
The global biogeography of tree leaf form and habit
(Nature Portfolio, 2023) Haozhi Ma; Thomas W. Crowther; Lidong Mo; Daniel S. Maynard; Susanne S. Renner; Johan van den Hoogen; Yibiao Zou; Jingjing Liang; Sergio de‐Miguel; G.J. Nabuurs