DIARIO CONTRASTE MR POPO DRIVERS

Results: A change in tree species composition and an increase in tree species richness in the heterogeneous condition was found, which decreased litter phosphorous (P) concentration. The specific enzymatic activity and the metabolic quotient were calculated as CUE indicators, and the coefficient of variation as a proxy for litter decomposition stability. Methods: In each condition (homogeneous and heterogeneous), the Importance Value Index (IVI) was calculated in the tree stratum, while chemical composition, microbial carbon (C) concentration, enzyme activities and C mineralization were measured in litter samples. religiosaforest? Study sites and dates: Two conditions inside a sacred fir forest were selected: A) a naturally monodominant homogeneous condition, and B) a heterogeneous condition with a non-monospecific tree stratum derived from local disturbances (wildfire and reforestation) occurred on a single occasion 18 years ago. Questions: What is the effect of tree stratum alteration on CUE and stability of litter decomposition in an A. We recommend that future work explore the impact of extreme weather events on montane SOC.īackground: There is limited information to predict the direction in which canopy modification affects the microbial carbon use efficiency (CUE) and, consequently, the magnitude and stability of litter decomposition in monodominant sacred fir (Abies religiosa) forests.

DIARIO CONTRASTE MR POPO DRIVERS

This review highlights the synergy of multiple drivers that should be fully considered when investigating mechanisms underlying montane SOC.

However, grazing had different effects on SOC in montane grasslands.Conclusions

Notably, montane forests and permafrost, which are important terrestrial carbon sinks, were more easily regulated by wildfires and climate change. Conversely, higher elevations were more susceptible to warming and plant community succession. SOC stocks at low elevations were more susceptible to grazing, precipitation, and land use changes. Anthropogenic factors mainly included land use changes and grazing practices. Specifically, we analyzed the impact of natural variability and human activity on SOC.Results and discussionWe found that natural factors mainly included climate change, plant succession, and wildfires. Nevertheless, few studies have systematically reviewed the drivers of the dynamics of global SOC in mountainous regions.Materials and methodHere, we collected relevant published literature to analyze the main drivers of the dynamics of global SOC at different elevations and plant communities. PurposeMountains have unique microclimates and rich plant diversity, resulting in different patterns and dynamics of soil organic carbon (SOC) across plant communities and elevations. We recommend soil organic carbon stocks should be included within Mexican and global forestry carbon stock inventories, and should be considered within voluntary carbon-credit markets used to incentivize the conservation of Mexican montane habitats. Notably, the belowground soil organic carbon stock comprised ≥ 40% of the total ecosystem organic carbon stock. religiosa forests to arable lands, we show that emissions of 1,122 to 1,671 Mg CO2 ha−1 are avoided. We addressed the following questions: (1) What are the organic carbon stocks, including the soil component, of our studied montane habitats? (2) What are the avoided CO2 emissions from maintaining natural forests and preventing conversion to arable land? And (3) Within our study area, are organic carbon stocks in the soil correlated to carbon stocks in aboveground living biomass? We found whole ecosystem organic carbon stocks ranged from 68 Mg OC ha−1 in unburnt alpine grasslands to 668 Mg OC ha−1 in Abies religiosa forests. Our study evaluated both, living biomass and belowground soil organic carbon in sites within forests, alpine grasslands and converted arable land. This aimed to integrate these habitats into Mexican and global census of forest carbon, the first step needed to convert on carbon credit markets to incentivize conservation of this region by local communities. Here, we undertook a comprehensive evaluation of carbon stocks within Mexican montane habitats in the Flora and Fauna Conservation Area of Nevado de Toluca. In the extensive and biodiverse Mexican montane regions, ongoing deforestation and conversion to arable lands has led to diminished ecosystem health and services. These ecosystems are vulnerable to global climate change and increasing human pressures, including forestry and their conversion to arable land. They also provide key ecological services, including the catchment of water resources and the storage of organic carbon. Montane ecosystems occur throughout the world, and harbor many endemic species.

Diario contraste mr popo