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Diversity and carbon storage across the tropical forest biome
A unique pan-tropical dataset of 360 plots located in structurally intact old-growth closed-canopy forest is compiled, surveyed using standardised methods, allowing a multi-scale evaluation of diversity-carbon relationships in tropical forests.
Asynchronous carbon sink saturation in African and Amazonian tropical forests
Overall, the uptake of carbon into Earth’s intact tropical forests peaked in the 1990s and independent observations indicating greater recent carbon uptake into the Northern Hemisphere landmass reinforce the conclusion that the intact tropical forest carbon sink has already peaked.
Long-term thermal sensitivity of Earth’s tropical forests
This synthesis of plot networks across climatic and biogeographic gradients shows that forest thermal sensitivity is dominated by high daytime temperatures, and biome-wide variation in tropical forest carbon stocks and dynamics shows long-term resilience to increasing high temperatures.
SB-202742, a novel beta-lactamase inhibitor isolated from Spondias mombin.
SB-202742 , an anacardic acid derivative possessing beta-lactamase inhibitory activity, has been isolated from a hexane extract of the plant, Spondias mombin. Its isolation, structure…
On the delineation of tropical vegetation types with an emphasis on forest/savanna transitions
Background: There is no generally agreed classification scheme for the many different vegetation formation types occurring in the tropics. This hinders cross-continental comparisons and causes…
Edaphic, structural and physiological contrasts across Amazon Basin forest-savanna ecotones suggest a role for potassium as a key modulator of tropical woody vegetation structure and function
Abstract. Sampling along a precipitation gradient in tropical South America extending from ca. 0.8 to 2.0 m a−1, savanna soils had consistently lower exchangeable cation concentrations and higher C /…
Identification of 7α-hydroxycephalosporin C as an intermediate in the methoxylation of cephalosporin C by a cell free extract of Streptomyces clavuligerus
Incubation of cephalosporin C with a cell free extract of Streptomyces clavuligerus resulted in the formation of 7α-hydroxycephalosporin C; the same crude enzyme preparation was shown to methylate…
Identification of a Series of Tricyclic Natural Products as Potent Broad-Spectrum Inhibitors of Metallo-β-Lactamases
- D. Payne, J. Hueso-Rodríguez, A. Rivera-Sagredo
- Biology, ChemistryAntimicrobial Agents and Chemotherapy
- 1 June 2002
This series of metallo-β-lactamase inhibitors exhibit the most promising antibacterial synergy activity so far observed against organisms producing meetallo- β- lactamases.
The global abundance of tree palms
- Robert Muscarella, T. Emílio, P. Morandi
- Environmental Science, GeographyGlobal Ecology and Biogeography
- 8 July 2020
Aim: Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms are evolutionarily, morphologically and…
African Savanna-Forest Boundary Dynamics: A 20-Year Study
Using long-term inventory plots, changes in vegetation structure, above-ground biomass (AGB) and biodiversity of trees ≥10 cm diameter over 20 years for five vegetation types are quantified, indicating that this technique can improve ecological understanding.