Abstract
Soil degradation is one of the main environmental issues within the international agendas on sustainability and climate adaptation. Among degradation processes, soil sealing represents the ...major threat, as ecosystem services dramatically decrease or are even nullified. The increasing use of big open data from satellites combined with AI algorithms are making geodata mining and mapping techniques essential to quantify soil sealing. Different keywords are adopted to define the phenomenon. However, at present, review articles presenting the state-of-the-art on mapping soil sealing by including the most common definitions are currently not available. Hence, we analyzed: (a) impervious surface, (b) soil sealing, (c) land take, (d) soil consumption, (e) land consumption. We provide a systematic review of remote sensing platforms and methodologies to map and to classify soil sealing, by highlighting: (a) definitions; (b) relationships among study areas, scales, platforms, resolutions, and classification methodologies; (c) emerging trends and policy implications. We performed a systematic search on Scopus (from 2000 to 2020), identifying 1277 papers; 392 focused on mapping soil sealing. ‘Impervious surface’ is the dominant definition. The phenomenon is more studied by the USA, China and Italy and, ‘soil sealing’ is recently more adopted in EU. Most studies focuses on mapping soil sealing at urban scale. We found Landsat are the most adopted platforms; they are frequently used for multi-temporal analyses. Eleven methodologies were identified: automatic classifications are the most adopted, dominated by pixel/sub-pixel-based approaches; other methods include Band Ratios, Supervised, OBIA, ANN. The majority of mapping analyses are performed on 30 m resolution in areas of 1000–10 000 km
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. Landsat images are less used for smaller areas. In conclusion, as study area size increases, a decrease in image resolution with the use of more completely automatic classification methodologies is recorded. However, most studies focuses on comparing classification techniques rather than supporting policy making for sustainable urban planning. Thus, we encourage to fill the gap by developing approaches that applicable to international policies.
Abstract
Despite the ongoing impacts of climate change around the world, fossil fuels continue to drive the global economy. The socio-environmental impacts of oil development at the local level are ...widely recognized, especially in high biocultural diversity areas, highlighting the need to develop and implement effective policies that protect both biodiversity and human rights. In consideration of the estimated remaining carbon budget to limit global warming at 1.5 °C, as well as Ecuador’s past attempts at limiting carbon extraction through the Yasuni-ITT Initiative, we adopt a new framework to identify ‘unburnable carbon areas’ with the goal of eventually phasing out fossil fuels. In the Ecuadorian Amazon—one of Earth’s high-biodiversity wilderness areas and home to uncontacted indigenous populations—50 years of widespread oil production is jeopardizing tropical ecosystems. Using the Ecuadorian Amazon as a paradigmatic case study, our research explores the feasibility of implementing energy transition paths based on unburnable carbon areas through spatial multicriteria decision analysis that is based on different approaches to territory management. We modeled interactions between oil development and areas with high biocultural sensitivities using environmental, socio-cultural, and oil-related geospatial information. We found that, for all simulations, concessions that should remain unburnable are mainly located in the south-central sector of Ecuadorian Amazon, surrounding the Yasuní National Park and the intangible zone for uncontacted indigenous people, where no reserves have been identified and oil infrastructure (wells, pipelines, etc) has not been deployed. In the Northern sector, particularly along the ‘Auca’ oil road system, the eventual continuation of fossil production requires best practices to minimize environmental impacts and respect human rights. Our spatial multicriteria approach based on geographical criteria can be replicated in different place contexts to explore different scenarios for effective climate mitigation policies.
Abstract
In the Ecuadorian Amazon—one of Earth’s last high-biodiversity wilderness areas and home to uncontacted indigenous populations—50 years of widespread oil development is jeopardizing ...biodiversity and feeding environmental conflicts. In 2019, a campaign to eliminate oil-related gas flaring, led by Amazonian communities impacted by fossil fuel production, resulted in an injunction against the Ecuadoran Ministry of Energy and Non-Renewable Natural Resources and the Ministry of Environment and Water. On 26 January 2021 the Court of Nueva Loja issued a historical order to ban gas flaring in the Ecuadorian Amazon. The present citizen science project played an important role in this process, enabling the production of independent spatial information through participatory mapping with indigenous and farmer communities. Globally, lack of independent information about oil activities has led to the monitoring of gas flaring by satellite imagery, achieving remarkable results. However, apart from institutional and remotely sensed data, reliable spatial information on gas flaring in the Ecuadorian Amazon is not available. Therefore, we adopted the community-based participatory action research approach to develop a participatory GIS process, aiming both to provide reliable data and to support social campaigns for environmental and climate justice. This work presents the first participatory mapping initiative of gas flaring at a regional scale, carried out completely through open source data and software. Having identified 295 previously unmapped gas flaring sites through participatory mapping, we highlight that the extent of gas flaring activities is well beyond the official data provided by the Ecuadorian Ministry of Environment and National Oceanic and Atmospheric Administration Nightfire annual datasets, which map only 24% and 33% of the sites, respectively. Seventy five of the detected sites were in the Yasuní Biosphere Reserve. Moreover, 39 of the identified sites were venting instead of flaring, a phenomenon never before documented in the Ecuadorian Amazon. This study demonstrates that, because official datasets and satellite imagery underestimate the extent of gas flaring in the Ecuadorian Amazon, community-based mapping offers a promising alternative for producing trusted, community-based scientific data. This community-produced data can support campaigns for legal recognition of human rights and environmental justice in the Ecuadorian Amazon. Finally, this study shows how local environmental conflicts can foster policy transformations that promote climate justice.
•294 gas flaring sites in Ecuadorian Amazon impact populated centres.•Gas flaring poses Moderate Risk on 99,918 people's health in Amazonian cities of Ecuador.•Gas flaring poses Very High Risk on ...12,718 people's health in Amazonian cities of Ecuador.•180 populated centres are in a 5 km radius from 6 to 18 gas flaring sites.•Grassroots and indigenous movements can have an active role in shaping just futures enforcing Actions for Climate Empowerment.
On 26 January 2021, the Court of Nueva Loja banned oil-related gas flaring (GF) activities in the Ecuadorian Amazon Region (EAR), establishing a term of 18 months for GF sites ‘near populated centres’ and until 2030 for those remaining. However, it is still unclear how the ruling will be applied.
The present study investigates the impact of GF sites on Amazonian settlements to support the application of the ban. This research is part of the Extreme Citizen Science process carried out by the Apaguen los Mecheros campaign—one of the main claimants in the trial.
To estimate the impacts on populated centres and four Amazonian cities, literature data on GF impacts were used to create three risk scenarios: very high-risk scenarios (VHR) within 0.65 km, high-risk scenarios (HR) within 2.25 km and moderate-risk scenarios (MR) within 5 km.
The results highlighted that 294 of 295 GF sites affect at least one populated centre in the MR and should thus be shut off. Additionally, 92 populated centres are affected in the VHR, 318 populated centres are affected in the HR and 711 populated centres are affected in the MR, while 180 populated centres are affected simultaneously by 6–18 GF sites in the MR. The results also show that 99,918 people in Amazonian cities may be currently affected by the MR, and more than 12,000 are affected in VHR areas.
By applying different metrics found in literature, the research provides the first assessment of the risk posed to the health of local communities for GF in the EAR. The results are being used from members of campaign in the trial, showing how participatory processes can support the grassroots and indigenous movements taking action to shape just futures.
In the Amazon Rainforest, a unique post-carbon plan to mitigate global warming and to protect the exceptional bio-cultural diversity was experimented in 2007–2013 by the Ecuadorian government. To ...preserve the rainforest ecosystems within the Yasuní-ITT oil block, the release of 410 million metric tons of CO2 would have been avoided. The neologism “yasunization” emerged as an Amazonian narrative on “unburnable carbon” to be replicated worldwide. Considering the unburnable carbon, petroleum-associated gas flaring represents the unleakable part. Flaring is an irrational practice that consists of burning waste gases, representing not only a leak of energy but also a pollution source. The general aim of the paper is to monitor gas flaring as a tool, revealing, at the same time, the implementation of environmental technologies in the oil sector and the compliance of sustainable policies in the Amazon region and the Yasuní Biosphere Reserve. Specific objectives are: (i) identifying and estimating gas flaring over seven years (2012–2018); (ii) mapping new flaring sites; iii) estimating potentially affected areas among ecosystems and local communities. We processed National Oceanic and Atmospheric Administration (NOAA) Nightfire annual dataset, based on the elaboration of imagery from the Visible Infrared Imaging Radiometer Suite (VIIRS) and developed a GIS-based novel simple method to identify new flaring sites from daily detections. We found that 23.5% of gas flaring sites and 18.4% of volumes of all oil industries operating in Ecuador are located within the Yasuní Biosphere Reserve (YBR). Moreover, we detected 34 additional flaring sites not included in the NOAA dataset—12 in the YBR and one in Tiputini field, a key area for biological and cultural diversity conservation. We also found that at least 10 indigenous communities, 18 populated centers and 10 schools are located in the potentially affected area. Gas flaring can be used as a policy indicator to monitor the implementation of sustainable development practices in complex territories.
The purpose of this research was to critically analyze the social license to operate (SLO) for an oil company operating in Block 10, an oil concession located in the Ecuadorian Amazon. The specific ...study area is an important biodiversity hotspot, inhabited by indigenous villages. A mixed-methods approach was used to support a deeper understanding of SLO, grounded in participants’ direct experience. Semi-structured interviews (N = 53) were conducted with village leaders and members, indigenous associations, State institutions, and oil company staff, while household surveys were conducted with village residents (N = 346). The qualitative data informed a modified version of Moffat and Zhang’s SLO model, which was tested through structural equation modelling (SEM) analyses. Compared to the reference model, our findings revealed a more crucial role of procedural fairness in building community trust, as well as acceptance and approval of the company. Procedural fairness was found to be central in mediating the relationship between trust and the effects of essential services provided by the company (medical assistance, education, house availability) and sources of livelihoods (i.e., fishing, hunting, harvesting, cultivating, and waterway quality). The main results suggested that the concept of SLO may not appropriately apply without taking into account a community’s autonomy to decline company operation. To enhance procedural fairness and respect for the right of community self-determination, companies may need to consider the following: Establishing a meaningful and transparent dialogue with the local community; engaging the community in decision-making processes; enhancing fair distribution of project benefits; and properly addressing community concerns, even in the form of protests. The respect of the free prior informed consent procedure is also needed, through the collaboration of both the State and companies. The reduction of community dependence on companies (e.g., through the presence of developmental alternatives to oil extraction) is another important requirement to support an authentic SLO in the study area.
Nanostructured celluloses, nanofibrils (CNFs) and nanocrystals (CNCs), are prepared through TEMPO‐mediated oxidation by controlling the intensity of the process modulated by catalyst concentration ...and processing time. These nanomaterials are evaluated as stabilizers for Pickering emulsions, fabricated using high‐pressure homogenization (HPH). Both CNFs and CNCs exhibit efficient steric and electrostatic stabilization of oil‐in‐water (O/W) emulsions. CNFs display strong inter‐droplet interactions, leading to the formation of a 3D fibrous network emulsion with higher viscosity compared to CNCs‐stabilized emulsions. However, CNFs also show a higher tendency toward flocculation, due to fibrils’ entanglement in the continuous phase. Interestingly, the HPH treatment has a notable impact on the CNFs’ interfacial layer, enhancing the emulsifying ability of CNFs and improving stability against coalescence. Conversely, CNCs‐stabilized emulsions exhibit lower viscosity but demonstrate higher interfacial activity and stabilization capability. Remarkably, no phase separation during 10 months of refrigerated storage, indicating excellent long‐term stability. Importantly, the HPH treatment does not significantly change the emulsifying ability of CNCs. In conclusion, this study highlights the possibility of obtaining nanocelluloses (NCs) with tailored emulsifying properties by regulating the intensity of TEMPO‐mediated oxidation applied to pulp cellulose. These findings open up new opportunities for the development of innovative ingredients for the food and cosmetic industries.
TEMPO‐mediated oxidation presents a viable strategy for producing nanostructured celluloses with tailored structures (nanofibrils and nanocrystals) and techno‐functional properties by controlling the process intensity. These tailored structures and characteristics significantly influence emulsions’ properties and stability. Thereby, nanocellulose‐stabilized Pickering emulsions for food and cosmetic applications highlight their ability to enhance properties with the limited environmental impact and lack of toxicity concerns.
Primary pancreatic lymphoma (PPL) is a rare disease representing 0.1% of malignant lymphomas, which lacks well‐defined diagnostic and therapeutic protocols.
Objectives
To describe PPL clinical, ...diagnostic and histological characteristics, together with therapy and outcome, in a relatively large series of patients.
Methods
The study includes 39 PPL patients, aged ≥15 years, observed from January 2005 to December 2018, in 8 Italian Institutions.
Results
The main symptoms were abdominal pain (58%) and jaundice (47%). Lactate dehydrogenase serum levels were elevated in 43% of patients. Histological specimens were mostly obtained by percutaneous (41%) or endoscopic (36%) biopsy, with diffuse large B‐cell lymphoma being the most frequent (69%) histological diagnosis. Chemotherapy was administered alone in 65% of patients, with radiotherapy in 17%, or after surgery in 9%. The 2‐year overall survival (OS) was 62%, the 2‐year progression‐free survival (PFS) 44%. Debulking surgery (with or without chemotherapy) was associated with a significant worse OS. Three (9.4%) of 32 high‐grade patients experienced a central nervous system (CNS) relapse.
Conclusions
PPL is rare, often high‐grade, with symptoms and localization similar to other pancreatic malignancies. Biopsy should be the preferred diagnostic method. High‐grade PPL should undergo CNS prophylaxis.
Background: Rituximab plus bendamustine (BR), and rituximab, bendamustine, and cytarabine (R-BAC) are well-known induction therapies in elderly patients with mantle cell lymphoma (MCL), according to ...clinical guidelines. However, a direct comparison between the two regimens has never been performed. Methods: In this multicentre retrospective study, we compared the outcome of patients with newly diagnosed MCL, treated with BR or R-BAC. Primary endpoint was 2-year progression-free survival (PFS). Inclusion bias was assessed using a propensity score stratified by gender, age, MCL morphology, and MIPI score. Results: After adjusting by propensity score, we identified 156 patients (53 BR, 103 R-BAC) with median age of 72 (53–90). Median follow-up was 46 months (range 12–133). R-BAC was administered in a 2-day schedule or with attenuated dose in 51% of patients. Patients treated with R-BAC achieved CR in 91% of cases, as compared with 60% for BR (p < 0.0001). The 2-year PFS was 87 ± 3% and 64 ± 7% for R-BAC and BR, respectively (p = 0.001). In terms of toxicity, R-BAC was associated with significantly more pronounced grade 3–4 thrombocytopenia than BR (50% vs. 17%). Conclusions: This study indicates that R-BAC, even when administered with judiciously attenuated doses, is associated with significantly prolonged 2-year PFS than BR in elderly patients with previously untreated MCL.
Aedes mosquitoes are vectors of arboviral diseases of great relevance for public health. The recent outbreaks of dengue, Zika, chikungunya and the rapid worldwide spreading of Aedes albopictus ...emphasize the need for improvement of vector surveillance and control. Host antibody response to mosquito salivary antigens is emerging as a relevant additional tool to directly assess vector-host contact, monitor efficacy of control interventions and evaluate risk of arboviral transmission.
Groups of four BALB/c mice were immunized by exposure to bites of either Aedes albopictus or Aedes aegypti. The 34k2 salivary proteins from Ae. albopictus (al34k2) and Ae. aegypti (ae34k2) were expressed in recombinant form and Ae. albopictus salivary peptides were designed through B-cell epitopes prediction software. IgG responses to salivary gland extracts, peptides, al34k2 and ae34k2 were measured in exposed mice. Both al34k2 and ae34k2, with some individual and antigen-specific variation, elicited a clearly detectable antibody response in immunized mice. Remarkably, the two orthologous proteins showed very low level of immune cross-reactivity, suggesting they may eventually be developed as species-specific markers of host exposure. The al34k2 immunogenicity and the limited immune cross-reactivity to ae34k2 were confirmed in a single human donor hyperimmune to Ae. albopictus saliva.
Our study shows that exposure to bites of Ae. albopictus or Ae. aegypti evokes in mice species-specific IgG responses to al34k2 or ae34k2, respectively. Deeper understanding of duration of antibody response and validation in natural conditions of human exposure to Aedes mosquitoes are certainly needed. However, our findings point to the al34k2 salivary protein as a promising potential candidate for the development of immunoassays to evaluate human exposure to Ae. albopictus. This would be a step forward in the establishment of a serological toolbox for the simultaneous assessment of human exposure to Aedes vectors and the pathogens they transmit.
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