Maria P. Almeida results 96
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Two new species and a new record of Digitaria (Poaceae: Panicoideae) from western Tanzania and the Uzondo PlateauNARA Subscribed
Summary Two new species of Digitaria are described from two locations in western Tanzania, including the Uzondo plateau, following collecting trips by Kaj Vollesen and colleagues, Digitaria laciniata and D. setarioides . Line drawings accompany the descriptions and scanning electron micrographs show spikelet and trichome morphology. Digitaria parodii is recorded from Tanzania for the first time. All three species represent asp...
Air pollution is a critical environmental issue influenced by both natural and anthropogenic sources. We hypothesized that PM 2.5 chemical composition varies spatially due to local anthropogenic sources, soil resuspension, and biomass burning. This study analyzed particulate matter (PM 2.5 ) concentrations and chemical composition (black carbon (BC), elements, and ions) in three locations in Rio de Janeiro state: Gávea (urban...
Phosphorus and base cations drive contrasting root dynamics in a central Amazon forestNARA Subscribed
Background and aims In highly weathered soils of central Amazonia, where nutrients such as phosphorus (P) and base cations are scarce, fertilization experiments have demonstrated above- and belowground effects on total net primary productivity (NPP). This study examined how fine root stocks and turnover responded to added nutrients over a two-year period. We predicted that adding a limiting nutrient would decrease fine root st...
Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R packag...