35 research outputs found

    The biocapacity adjusted economic growth. Developing a new indicator

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    Abstract The environment may constrain economic growth potential. In other words, economic growth cannot be pursued in spite of ecological limits any longer. Here we present an economic growth indicator adjusted by taking into account the current tendency of national economies to overcome the availability of natural resources and ecological dynamics. We combine two indicators: 1) the Output Gap, a measure of production capacity of the economy based on the difference between actual and potential GDP, as a per cent of potential GDP; 2) the difference between the Ecological Footprint and the Biocapacity of a country, systemic indicators representing the extent to which a country operates within or beyond ecological limits. That combination gives rise to the Biocapacity Adjusted Economic Growth indicator which enables a categorization of countries based on assessment of growth patterns in line or not with sustainability principles

    Implications of land-grabbing on the ecological balance of Brazil

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    In the global free-market, natural resource scarcity and opportunities for preserving the local environment are fostering international purchasing of large extensions of land, mainly for agricultural use. These land transactions often involve land cover change (i.e., through deforestation) or a shift from extensive or traditional to intensive agricultural practices. In Brazil, the land appropriation by foreign investors (i.e., the so-called "land-grabbing") is affecting natural capital availability for local communities to a different extent in the very different territorial entities. At the same time, Brazilian investors are purchasing land in other countries. Ecological footprint accounting is one appropriate lens that can be employed to visualize the aggregated effect of natural capital appropriation and use. The aim of this paper is to provide a first estimate on the effect of land-grabbing on the ecological balance of Brazil through calculating the biocapacity embodied in purchased lands in the different states of Brazil. The results show that Brazil is losing between 9 to 9.3 million global hectares (on a gross basis, or a net total of 7.7 to 8.6 million of global hectares) of its biocapacity due to land-grabbing, when considering respectively a "cropland to cropland" (i.e., no land-cover change) and a "total deforestation" scenario. This represents a minimum estimate, highlighting the need for further land-grabbing data collection at the subnational scale. This analysis can be replicated for other countries of the world, adjusting their ecological balance by considering the biocapacity embodied in international transactions of land

    Disaggregating the SWOT Analysis of Marine Renewable Energies

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    Energy transitions require strategic plans that minimize inefficiencies and maximize energy production in a sustainable way. This aspect is fundamental in the case of innovative technologies based on marine renewable energies. Marine renewable energies involve problems and advantages which imply a reconceptualization of marine space and its management. Through an holistic SWOT analysis the main strengths, weaknesses, opportunities and threats are highlighted in this paper, considering social, economic, legal, technological, and environmental dimensions. We disaggregate the SWOT analysis for marine renewable energy technologies in order to create an overview of pros and cons for every dimension and better identify specific hotspots and possible solutions in different fields

    Relating pain intensity of newborns to onset of nonlinear phenomena in cry recordings

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    The cries of several full term newborns, recorded during blood sampling, were analyzed. Spectrograms showed the appearance of irregular patterns related to the pain assessed using the method of the DAN scale. In particular, the appearance of Noise concentration Patterns (NP) in spectrograms was related to the increase of the pain suffered by the newborns. In this scenario, pain constitutes a bifurcation parameter for the vocal folds dynamic, inducing a Ruelle-Takens-Newhouse chaotic transition.Comment: 15 pages, 4 figures, 1 table. Accepted for publication in Phys. Lett.

    Teaching sustainability within the context of everyday life: steps toward achieving the sustainable development goals through the EUSTEPs module

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    In a world characterized by Ecological Overshoot, education can nurture sustainability-minded citizens and future leaders to help accelerate the transition towards a one-planet compatible society. Despite the essential role of Higher Education Institutions (HEIs) in contributing to a sustainable society, a holistic understanding of how to incorporate sustainability initiatives into HEIs is still lacking. Given the importance of HEIs in societies and considering the number of students, educators, and staff they host every day, ensuring that sustainability is both taught and practiced within campuses becomes fundamental. To this end, a strategic partnership was created in 2019 to set up the ERASMUS+ project EUSTEPs - Enhancing Universities’ Sustainability Teaching and Practices through Ecological Footprint. Among the main outputs of the project is a teaching module for introducing the sustainability concept to students. This module takes a 360-degree approach to teach sustainability, allowing students to endogenously realize the full complexity of sustainability, in an engaging and captivating manner. This paper thus aims to: 1) present the EUSTEPs Module, its pedagogical approach and structure, and the learning outcomes and competencies students are expected to gain; 2) review the outcomes of its first pilot teaching in four European HEIs, and 3) shed light on how this Module contributes to the development of competences and pedagogical approaches for achieving the Sustainable Development Goals (SDGs). Our findings show that 90% of the students were ‘satisfied’ or ‘very satisfied’ with the Module, rating the Ecological Footprint as the most useful teaching tool among those included in the Module, and appreciated the interactive nature of the proposed teaching. Feedback obtained from students during the pilot teaching contributed to shaping the Module’s final structure and content. The Module – an important interactive sustainability pedagogical tool – is now ready for use with students from different disciplines, thus contributing to progress towards the UN 2030 Agenda, particularly SDG 4, SDG 11, SDG 12, and SDG 13.Project “EUSTEPs: Enhancing Universities’ Sustainability Teaching and Practices through Ecological Footprint,” KA 203, Strategic Partnership in Higher Education 2019–2022, Agreement No. 2019-1-EL01-KA203-062941.info:eu-repo/semantics/publishedVersio

    Carbon dioxide sequestration model of a vertical greenery system

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    A dynamic model simulating carbon dioxide (CO2) sequestration by plants embedded in a vertical greenery system (VGS) was developed. The aim of the model was to demonstrate the advantages, in terms of CO2 sequestration, obtained by installation of large vegetated wall surfaces in urban areas. The ability of various plants, tested separately or in a mixed-species set, to accumulate carbon in different compartments and moments of their life (plants, compost, soil and microbial biomass in soil) was quantified. The model simulates a series of processes, from planting and growth of herbaceous plants in the VGS to the end of their lives, when compost is produced from green residues and is added to agricultural soil. The amount of CO2 removed from the atmosphere is the portion finally stocked in the soil in the form of microbial biomass. The plants considered are commonly used in VGS because they are perennial and suitable for hydroponic culture. Typical Mediterranean climate was assumed for the VGS model. The herbaceous species selected were the perennial grass Zoysia matrella, the succulent Sedum spurium, Mediterranean shrubs Salvia nemorosa and Rosmarinus officinalis and flowering ornamental plants Geranium sanguineum, Carex brunnea and Facia japonica. As estimated by the model, the mean yearly CO2 flow absorbed by plant biomass of these species (expressed in carbon dioxide equivalents, CO2eq) was 0.44-3.18 kg CO2eq m(-2) of vertical garden. Green residues from plant replacement and trimming/pruning were treated to produce compost and added to agricultural soil. We estimated that a 98 m(2) VGS can capture an average carbon dioxide flow of 13.41-97.03 kg CO2eq per year. The model predicts increasing long-lasting carbon dioxide accumulation in the VGS over time, indicating a feasible solution for climate change mitigation in urban areas. The model can be adapted to different plant species and different geographical, climatic and biological conditions

    Application and use of the ISEW for assessing the sustainability of a regional system: A case study in Italy

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    3noreservedThe Index of Sustainable Economic Welfare (ISEW) was introduced by Daly and Cobb in 1989 in order to integrate the information embodied in GDP. Since economic growth implies externalities and market failures, and a portion of it can be defined as "uneconomic", the ISEW method introduces some corrections and adjustments to the GDP calculation framework. The ISEW has been calculated for a number of nations but it has been rarely applied to sub-national systems. Its calculation at the local level is important especially in case of administrative decentralization, and autonomy and responsibility of local authorities in certain fields. For this reason, a more and more comprehensive knowledge of the characteristics and peculiarities of the territorial system they manage is necessary. This paper presents the results of the ISEW calculation for Tuscany, a region in central Italy, in the period 1971-2006. This is one of the few attempts to apply the ISEW in time series at the regional level. Final results show that a discrepancy between ISEW and GDP appeared in the 1970s. Social and environmental pressures increased during the period under study making the gap equal to about 30 percent of regional GDP in 2006. The ISEW can be used also as a tool for evaluating policies, but further adjustments in calculation of certain items are considered necessary for taking into account and evaluating punctual policies. A case of energy policy is presented. (C) 2011 Elsevier B.V. All rights reserved.mixedPULSELLI, F.M.; BRAVI, M.; TIEZZI, E.Pulselli, F. M.; Bravi, M.; Tiezzi, E

    Calculation of the Unit Emergy Value of Water in an Italian Watershed

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    3noreservedEmergy is a thermodynamics-based entity that enables the implementation of a holistic environmental accounting system. It contributes to identify and measure all the inputs (energy and matter) supporting a given system, expressed in a common unit, namely solar emergy joule (sej). The emergy per unit product (called unit emergy value, UEV), is a measure of the environmental cost of a given resource. It is specific of the system/process and gives information on the dynamics, components and functioning of it. This paper presents the emergy evaluation of water resources within the watershed of the river Sieve, located in the Province of Florence (Italy). Along the river, an artificial basin has been created by means of a dam to preserve water quantity and quality, and to protect the Florentine area from dangerous floods and inundations. Different UEVs of water can be identified along the course of the river, especially upstream and downstream of the dam. These values quantify both the environmental and human efforts made to ensure and regulate the presence of water at different points of the river. The UEV of water flowing in the river increases from 1.35×105sej/g upstream, to 5.80×105sej/g downstream of the dam, depending mainly on man-made infrastructure. Along the watershed, three different systems of extraction, purification and distribution of water have been chosen on the basis of their dimension, type and location. UEVs of water distributed and the emergy investment necessary to implement different water management strategies are presented. The value of water purified and distributed decreases from 2.00×106sej/g for the smallest plant in the mountainous area, to 1.72×106sej/g for the largest plant, in the city of Florence, depending on production efficiency. © 2011 Elsevier B.V.mixedPULSELLI, F.M.; PATRIZI, N.; FOCARDI, S.Pulselli, F. M.; Patrizi, N.; Focardi, S
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