Background The nationally determined contribution(NDc) presented by Argentina within the framework of the Paris Agreement is aligned with the decisions made in the context of the United Nations Framework conven-tion...
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Background The nationally determined contribution(NDc) presented by Argentina within the framework of the Paris Agreement is aligned with the decisions made in the context of the United Nations Framework conven-tion on climate change(UNFccc) on the reduction of emissions derived from deforestation and forest degradation, as well as forest carbon conservation(REDD+). In addition, climate change constitutes one of the greatest threats to forest biodiversity and ecosystem services. However, the soil organic carbon(SOc) stocks of native forests have not been incorporated into the Forest Reference Emission Levels calculations and for conservation planning under cli-mate variability due to a lack of information. The objectives of this study were:(i) to model SOc stocks to 30 cm of native forests at a national scale using climatic, topographic and vegetation as predictor variables, and(ii) to relate SOc stocks with spatial–temporal remotely sensed indices to determine biodiversity conservation concerns due to threats from high inter-annual climate *** We used 1040 forest soil samples(0–30 cm) to generate spatially explicit estimates of SOc native forests in Argentina at a spatial resolution of approximately 200 m. We selected 52 potential predictive environmental covari-ates, which represent key factors for the spatial distribution of SOc. All covariate maps were uploaded to the Google Earth Engine cloud-based computing platform for subsequent modelling. To determine the biodiversity threats from high inter-annual climate variability, we employed the spatial–temporal satellite-derived indices based on Enhanced Vegetation Index(EVI) and land surface temperature(LST) images from Landsat *** SOc model(0–30 cm depth) prediction accounted for 69% of the variation of this soil property across the whole native forest coverage in Argentina. Total mean SOc stock reached 2.81 Pg c(2.71–2.84 Pg c with a probability of 90%) for a total area of 460,790 km2,
Over the last years, technology evolution is leading the way towards autonomous, ubiquitous and widespread interactions among small computing devices. To this aim, communication technologies that support dynamicity an...
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Over the last years, technology evolution is leading the way towards autonomous, ubiquitous and widespread interactions among small computing devices. To this aim, communication technologies that support dynamicity and mobility and work on inexpensive small devices have attracted much attention. The Bluetooth speci?cation particularly ?ts this idea, providing a free, versatile, and ?exible wireless network technology with low power consumption. On the other hand, as the degree of penetration of computational services has increased in everyday life, users’ habits have deeply changed, resulting into an increasing request for mobile and ubiquitous services. In a few years, most of the devices accessing the web services will be mobile. Therefore, we need solutions that encompass networking and application issues involved in realizing mobile and ubiquitous access to the services. In this paper, we analyze how Bluetooth can be used to design, develop, and deploy Web Services-based applications that run on mobile devices. We propose and evaluate a framework that allows the interaction with Web Services from mobile devices using Bluetooth as communication channel.
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