32 research outputs found
FlorÃstica do estrato herbáceo de um remanescente de cerradão em Campo Grande, Mato Grosso do Sul, Brasil
Qualitative analysis of the viability of autogenous fat grafts grafted in different environments of interstitial pressure. Preliminary results and description of a new experimental model in mini-pigs
Botulinum toxin type A on cutaneous flap viability in diabetic and tobacco-exposed rats
Post-fire reproduction of herbs at a savanna-gallery forest boundary in Distrito Federal, Brazil
Estudo de rajadas de ventos e direções predominantes em Lavras, Minas Gerais, por meio da distribuição gama
Species-environment relationship in the herb-subshrub layer of a moist Savanna site, Federal District, Brazil
An outcome analysis and long-term viability of cryopreserved cultured epidermal allografts: assessment of the conservation of transplantable human skin allografts
Tree diversity and above-ground biomass in the South America Cerrado biome and their conservation implications
Less than half of the original two million square kilometers of the Cerrado vegetation remains standing, and there are still many uncertainties as to how to conserve and prioritize remaining areas effectively. A key limitation is the continuing lack of geographically-extensive evaluation of ecosystem-level properties across the biome. Here we sought to address this gap by comparing the woody vegetation of the typical cerrado of the Cerrado–Amazonia Transition with that of the core area of the Cerrado in terms of both tree diversity and vegetation biomass. We used 21 one-hectare plots in the transition and 18 in the core to compare key structural parameters (tree height, basal area, and above-ground biomass), and diversity metrics between the regions. We also evaluated the effects of temperature and precipitation on biomass, as well as explored the species diversity versus biomass relationship. We found, for the first time, both that the typical cerrado at the transition holds substantially more biomass than at the core, and that higher temperature and greater precipitation can explain this difference. By contrast, plot-level alpha diversity was almost identical in the two regions. Finally, contrary to some theoretical expectations, we found no positive relationship between species diversity and biomass for the Cerrado woody vegetation. This has implications for the development of effective conservation measures, given that areas with high biomass and importance for the compensation of greenhouse gas emissions are often not those with the greatest diversity