849 resultados para Participation in Land Regularization
Resumo:
The physical activity of the Swiss population differs considerably depending on the linguistic region. German speakers are more often physically active than people living in the French or Italian-speaking part of Switzerland (Stamm & Lamprecht, 2011). This study analyses how socio-cultural factors correlate with sports participation for adolescents and young adults. In order to analyse this research question, Bourdieu’s concept of habitus (1984) has been adapted and used as a theoretical background. This sport-related concept of habitus considers culturally determined values, the attribution of meaning and patterns of action such as the understanding of sports, the importance of sports, body, health or leisure. On this basis, the sport-related habitus and the practical relevance of sports participation has been empirically reconstructed for adolescents and young adults aged 15 to 25 through a qualitative study including guideline-based interviews with German (n=6) and French (n=4) speaking adolescents and young adults, as well as a quantitative survey in a German (n=106) and a French (n=99) speaking commune of Switzerland. Initial findings reveal that young German speakers associate sports with self-discipline (χ²(1, N=205)= 8.223, p<.005, V=.200) and fitness (χ²(1, N=205)= 21.989, p<.005, V=.328) whereas young French speakers are more likely to relate health (χ²(1, N=205)= 9.455, p<.005, V=.215), effort and perspiration (χ²(1, N=205)= 18.835, p<.005, V=.303) to sports. Similarly, the understanding of body and health as well as the attitude towards leisure differs between the German and French speaking parts of Switzerland. This study illustrates that the concept of sports habitus is culturally shaped and therefore may be fruitful in further analyses. Bourdieu, P. (1984). Distinction. A Social Critique of the Judgement of Taste. Cambridge: Harvard University Press. Stamm, H. & Lamprecht, M. (2008). Swiss sports participation in an international perspective. European Journal for Sport and Society, 8 (1+2), 15-29.
Resumo:
Phylogenetic diversity (PD) has been successfully used as a complement to classical measures of biological diversity such as species richness or functional diversity. By considering the phylogenetic history of species, PD broadly summarizes the trait space within a community. This covers amongst others complex physiological or biochemical traits that are often not considered in estimates of functional diversity, but may be important for the understanding of community assembly and the relationship between diversity and ecosystem functions. In this study we analyzed the relationship between PD of plant communities and land-use intensification in 150 local grassland plots in three regions in Germany. Specifically we asked whether PD decreases with land-use intensification and if so, whether the relationship is robust across different regions. Overall, we found that species richness decreased along land-use gradients the results however differed for common and rare species assemblages. PD only weakly decreased with increasing land-use intensity. The strength of the relationship thereby varied among regions and PD metrics used. From our results we suggest that there is no general relationship between PD and land-use intensification probably due to lack of phylogenetic conservatism in land- use sensitive traits. Nevertheless, we suggest that depending on specific regional idiosyncrasies the consideration of PD as a complement to other measures of diversity can be useful.
Resumo:
This paper analyses local geographical contexts targeted by transnational large-scale land acquisitions (>200 ha per deal) in order to understand how emerging patterns of socio-ecological characteristics can be related to processes of large-scale foreign investment in land. Using a sample of 139 land deals georeferenced with high spatial accuracy, we first analyse their target contexts in terms of land cover, population density, accessibility, and indicators for agricultural potential. Three distinct patterns emerge from the analysis: densely populated and easily accessible croplands (35% of land deals); remote forestlands with lower population densities (34% of land deals); and moderately populated and moderately accessible shrub- or grasslands (26% of land deals). These patterns are consistent with processes described in the relevant case study literature, and they each involve distinct types of stakeholders and associated competition over land. We then repeat the often-cited analysis that postulates a link between land investments and target countries with abundant so-called “idle” or “marginal” lands as measured by yield gap and available suitable but uncultivated land; our methods differ from the earlier approach, however, in that we examine local context (10-km radius) rather than countries as a whole. The results show that earlier findings are disputable in terms of concepts, methods, and contents. Further, we reflect on methodologies for exploring linkages between socioecological patterns and land investment processes. Improving and enhancing large datasets of georeferenced land deals is an important next step; at the same time, careful choice of the spatial scale of analysis is crucial for ensuring compatibility between the spatial accuracy of land deal locations and the resolution of available geospatial data layers. Finally, we argue that new approaches and methods must be developed to empirically link socio-ecological patterns in target contexts to key determinants of land investment processes. This would help to improve the validity and the reach of our findings as an input for evidence-informed policy debates.
Resumo:
In Nepal, changing demographic patterns are leading to changes in land use. The high level of outmigration of men in the hills of Kaski District, Western Development Region of Nepal, is affecting the household structure but also land management. Land is often abandoned, as the burden on those left behind is too high. How do these developments affect the state of the land in terms of land degradation? To find out, we studied land degradation, land abandonment caused by outmigration, and existing sustainable land management practices in a subwatershed in Kaski District. Mapping was done using the methodology of the World Overview of Conservation Approaches and Technologies (WOCAT). While previous studies expected land abandonment to exacerbate slope erosion, we demonstrate in this paper that it is in fact leading to an increase in vegetation cover due to favourable conditions for ecosystem recovery. However, negative impacts are several, including the increase of invasive species harmful to livestock and a decline in soil fertility. Traditional land management practices such as terraces and forest management exist. To date, however, these measures fail to take account of the changing population dynamics in the region, making the question of how migration and land degradation are linked worth revisiting.
Resumo:
In land systems, equitably managing trade-offs between planetary boundaries and human development needs represents a grand challenge in sustainability oriented initiatives. Informing such initiatives requires knowledge about the nexus between land use, poverty, and environment. This paper presents results from Lao PDR, where we combined nationwide spatial data on land use types and the environmental state of landscapes with village-level poverty indicators. Our analysis reveals two general but contrasting trends. First, landscapes with paddy or permanent agriculture allow a greater number of people to live in less poverty but come at the price of a decrease in natural vegetation cover. Second, people practising extensive swidden agriculture and living in intact environments are often better off than people in degraded paddy or permanent agriculture. As poverty rates within different landscape types vary more than between landscape types, we cannot stipulate a land use–poverty–environment nexus. However, the distinct spatial patterns or configurations of these rates point to other important factors at play. Drawing on ethnicity as a proximate factor for endogenous development potentials and accessibility as a proximate factor for external influences, we further explore these linkages. Ethnicity is strongly related to poverty in all land use types almost independently of accessibility, implying that social distance outweighs geographic or physical distance. In turn, accessibility, almost a precondition for poverty alleviation, is mainly beneficial to ethnic majority groups and people living in paddy or permanent agriculture. These groups are able to translate improved accessibility into poverty alleviation. Our results show that the concurrence of external influences with local—highly contextual—development potentials is key to shaping outcomes of the land use–poverty–environment nexus. By addressing such leverage points, these findings help guide more effective development interventions. At the same time, they point to the need in land change science to better integrate the understanding of place-based land indicators with process-based drivers of land use change.
Resumo:
More than 40 years after the agrarian reform, Peru is experiencing a renewed process of concentration of land ownership in the hands of large-scale investors, favoring the development of a sugar cane production cluster along the northern coast. The expansion of the agricultural frontier by means of large irrigation projects – originally developed to benefit medium- and small-scale farmers – is carried out today in order to be sold to large-scale investors for the production of export crops. In the region of Piura the increasing presence of large-scale biofuel investors puts substantial pressure on land and water resources, not only changing the use of and access to land for local communities, but also generating water shortages vis-à-vis the multiple water demands of local food producers. The changes in land relations and the agro-ecosystem, the altering food production regime as well as the increasing proletarization of smallholders, is driving many locals – even those which (initially) welcomed the investment – into resistance activities against the increasing control of land, water and other natural resources in the hands of agribusinesses. The aim of this presentation is to discuss the contemporary political, social and cultural dynamics of agrarian change along the northern Peruvian coast as well as the «reactions from below» emanating from campesino communities, landless laborers, brick producers, pastoralists as well as other marginalized groups. The different strategies, forms and practices of resistance with the goal of the «protection of the territory» shall be explored as well as the reasons for their rather scattered occurrence and the lack of alliances on the land issue. This input shall make a contribution to the on-going debate on individual and communal property rights and the question of what is best in terms of collective defense against land grabbing.
Resumo:
Viele Länder verankern die Versorgungs- oder Ernährungssicherheit als staatspolitisches Ziel in ihrem Grundgesetz. Neuerdings wird auch das Recht auf Nahrung und auf die Erfüllung weiterer Grundbedürfnisse aufgeführt. Das Schweizer Parlament hat darüber hinaus sogar den Grundsatz der Ernährungssouveränität im Landwirtschaftsgesetz verankert. Die zur Förderung dieser Ziele genannten Aufgaben und Eingriffsrechte des Staates sind jeweils unterschiedlich und unterschiedlich präzise formuliert. Dabei gibt es für jedes Land eigentlich nur zwei Möglichkeiten zur Ernährung: Inlandproduktion und Einfuhr. Eine zusätzliche Option ist die Bildung von Nahrungsmittelreserven zur Überbrückung von Versorgungsengpässen. Die Schweiz benützt und fördert alle drei Möglichkeiten zu ihrer Ernährungssicherheit, im Wesentlichen mit vier Politiken: Versorgungs-, Aussenwirtschafts-, Agrar- und Entwicklungspolitik. Bei Störungen sollen die durch Grenzabgaben finanzierten Pflichtlager während rund sechs Monaten die Inlandnachfrage sichern. Die Optimierung und die Abstimmung unter den verschiedenen Sektorpolitiken, welche unter Berücksichtigung der internationalen Rahmenbedingungen eine grösstmögliche Ernährungssicherheit herbeiführen, gehört zu den Kernaufgaben jedes Staates. Die Umsetzung der genannten Sektorpolitiken ist jedoch in der Praxis nicht immer kohärent, geschweige denn konfliktfrei. Dieser Artikel beschreibt zunächst die internationalen rechtlichen und ökonomischen Parameter für die Schweizer Versorgungspolitik und ihre Beziehung zur Wirtschaftsfreiheit im Allgemeinen, und speziell auf ihre Zweckmässigkeit hinsichtlich der Ernährungssicherheit. Die Analyse der Wechselwirkungen und der Konflikte bei der Umsetzung zeigt, dass die Schweizer Ernährungssicherheitspolitik (food security) in Wirklichkeit eine Politik zur einheimischen Produzentensicherheit ist (farm security). Den Abschluss bilden einige Vorschläge zur Minderung der sektorpolitischen Inkohärenzen und der festgestellten negativen Auswirkungen der Agrarpolitik auf die Schweizer und globale Ernährungssicherheit.
Resumo:
Non-melanoma skin cancer (NMSC) is the most frequently diagnosed form of cancer in United States. As in many other cancers, this slow growing malignancy manifests deregulated expression of apoptosis regulating proteins including bcl-2 family member proteins. To understand the role of apoptosis regulating protein in epidermal homeostasis and progression of NMSC, we investigated keratinocyte proliferation, differentiation and tumorigenesis in bcl-2 and bax null mice. The rate and the pattern of proliferation and spontaneous cell death were the same between the null and the control mice. Both bcl-2 and bax null epidermis showed decreased levels of cytokeratin 14 expression compared to the control littermates. Also, the gene knock out mice showed higher expression of cytokeratin 1 and loricrin in epidermis compared to the control mice. The apoptotic response to genotoxic agent, UV radiation (UVR), was assessed by counting sunburn cells. The bax null keratinocytes showed a resistance to apoptosis while bcl-2 null mice showed an increased susceptibility to cell death compared to the control mice. Moreover, we demonstrated an increase in tumor incidence in bax null mice compared to control littermates in the in vivo chemical carcinogenesis study. Next, we examined the tumor suppressor role of bax protein in NMSC by studying its participation in repair of UVR-mediated DNA lesions. In UVR treated primary keratinocytes from bax deficient mice, the level of CPD remaining was twice that of control cells at 48 hours. Similar results were obtained using embryonic fibroblasts from bax null and bax +/+ embryos, and also with a bax deficient prostate cancer cell line in which bax expression had been restored. However, the repair rate of 6-4 PP was unaffected by the absence of bax protein in all three of above mentioned cell types. In conclusion, bax protein may have a dual function in its role as tumor suppressor in NMSC. Bax may directly or indirectly facilitate DNA repair, or programmed cell death if DNA damage is too severe, thus, in either function, preserving genomic integrity following a genotoxic event. ^
Resumo:
Woodland savannahs provide essential ecosystem functions and services to communities. On the African continent, they are widely utilized and converted to intensive land uses. This study investigates the land cover changes of 108,038 km**2 in NE Namibia using multi-temporal, multi-sensor Landsat imagery, at decadal intervals from 1975 to 2014, with a post-classification change detection method and supervised Regression Tree classifiers. We discuss likely impacts of land tenure and reforms over the past four decades on changes in land use and land cover. These changes included losses, gains and exchanges between predominant land cover classes. Exchanges comprised logical conversions between woodland and agricultural classes, implying woodland clearing for arable farming, cropland abandonment and vegetation succession. The most dominant change was a reduction in the area of the woodland class due to the expansion of the agricultural class, specifically, small-scale cereal and pastoral production. Woodland area decreased from 90% of the study area in 1975 to 83% in 2014, while cleared land increased from 9% to 14%. We found that the main land cover changes are conversion from woodland to agricultural and urban land uses, driven by urban expansion and woodland clearing for subsistence-based agriculture and pastoralism.
Resumo:
Long term global archives of high-moderate spatial resolution, multi-spectral satellite imagery are now readily accessible, but are not being fully utilised by management agencies due to the lack of appropriate methods to consistently produce accurate and timely management ready information. This work developed an object-based remote sensing approach to map land cover and seagrass distribution in an Australian coastal environment for a 38 year Landsat image time-series archive (1972-2010). Landsat Multi-Spectral Scanner (MSS), Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM+) imagery were used without in situ field data input (but still using field knowledge) to produce land and seagrass cover maps every year data were available, resulting in over 60 map products over the 38 year archive. Land cover was mapped annually using vegetation, bare ground, urban and agricultural classes. Seagrass distribution was also mapped annually, and in some years monthly, via horizontal projected foliage cover classes, sand and deep water. Land cover products were validated using aerial photography and seagrass maps were validated with field survey data, producing several measures of accuracy. An average overall accuracy of 65% and 80% was reported for seagrass and land cover products respectively, which is consistent with other studies in the area. This study is the first to show moderate spatial resolution, long term annual changes in land cover and seagrass in an Australian environment, created without the use of in situ data; and only one of a few similar studies globally. The land cover products identify several long term trends; such as significant increases in South East Queensland's urban density and extent, vegetation clearing in rural and rural-residential areas, and inter-annual variation in dry vegetation types in western South East Queensland. The seagrass cover products show that there has been a minimal overall change in seagrass extent, but that seagrass cover level distribution is extremely dynamic; evidenced by large scale migrations of higher seagrass cover levels and several sudden and significant changes in cover level. These mapping products will allow management agencies to build a baseline assessment of their resources, understand past changes and help inform implementation and planning of management policy to address potential future changes.
Resumo:
FDI in the garment sector has been the single case of large-scale manufacturing investment in African low-income countries since the 1990s. While FDI has triggered the development of local industries in many developing countries, it has not yet been realized in Africa. This paper describes the spillover process in the Kenyan garment industry and investigates the background of local firms' behavior through firm interviews and simulation of expected profits in export market. It shows that credit constraint, rather than absorptive capacity, is a primary source of inactive participation in export opportunity. Only firms which afford additional production facilities without sacrificing stable domestic supply may be motivated to start exporting. However, in comparison with successful Asian exporters, those firms were not as motivated as Asian firms due to the large gap in expected profits.
Resumo:
The purpose of this paper is to shed light on the historical relation between conflict and land tenure in Rwanda, a country that experienced a harsh civil war and genocide in the mid-1990s. The victory of the Tutsi-led rebel, Rwandan Patriotic Front (RPF) at that time triggered a massive return of refugees and a drastic change in land tenure policy. These were refugees who had fled the country at around the time of independence, in 1962, due to the political turmoil and persecution (the "social revolution") and who shared the background of the core RPF members. The social revolution had dismantled the existent Tutsi-led political order, compelling many Tutsi families to seek refuge outside their homeland. Under the post-independence rule of a Hutu-led government, the Tutsi refugees were not allowed to return and the lands they left behind were often arbitrarily distributed by local authorities among Hutu peasants. After victory in the mid-1990s civil war, the newly established RPF-led government ordered the current inhabitants of the lands to divide the properties in order to allocate portions to the Tutsi returnees. Different patterns of land holding and land division will be explained in the paper from data gathered through the authors' fieldworks in the southern and eastern parts of Rwanda. Although overt resistance to land division has not been observed to date, the land rights of the Tutsi returnees must be considered unstable because their legitimacy depends primarily on the strength and political stability of the RPF-led government. If the authority of RPF were to weaken, the land rights will be jeopardized. Throughout Rwandan history, in which political exclusion has often led to serious conflict, macro-level politics have repeatedly influenced land holding. Promotion of an inclusive democracy, therefore, is indispensable to escape the vicious circle between political instability and land rights.
Resumo:
In agricultural societies, adjusting land and labor according to changes of labor endowment that result from family life cycle events is premised on making full use of resources for each farming household and for the economy as a whole. This paper examines how and how well households in pre-modern Japan reallocated land and labor, using a population register covering 150 years from 1720–1870 for a village in the Tohoku region. We find that households reacted to equalize their production factors; land-scarce households tended to acquire or rent-in land and out-migrate their kin members, while land-abundant households tended to release or rent-out land, in-migrate kin members, or employ non-kin members. Estimates suggest that more than 80% of the surplus or deficit area of land was resolved if the household rented or "sold" land. We discuss a potential underlying mechanism; namely, that the village's collective responsibility for tax payment (murauke) motivated both individual households and the village as a whole to reallocate land and labor for the efficient use of resources.
Resumo:
Plant proteolysis is a metabolic process where specific enzymes called peptidases degrade proteins. In plants, this complex process involves broad metabolic networks and different sub-cellular compartments. Several types of peptidases take part in the proteolytic process, mainly cysteine-, serine-, aspartyl- and metallo- peptidases. Among the cysteine-peptidases, the papain-like or C1A peptidases (family C1, clan CA) are extensively present in land plants and are classified into catepsins L-, B-, H- and Flike. The catalytic mechanism of these C1A peptidases is highly conserved and involves the three amino acids Cys, His and Asn in the catalytic triad, and a Gln residue which seems essential for maintaining an active enzyme conformation. These proteins are synthesized as inactive precursors, which comprise an N-terminal signal peptide, a propeptide, and the mature protein. In barley, we have identified 33 cysteine-peptidases from the papain-like family, classifying them into 8 different groups. Five of them corresponded to cathepsins L-like (5 subgroups), 1 cathepsin B-like group, 1 cathepsin F-like group and 1 cathepsin H-like group. Besides, C1A peptidases are the specific targets of the plant proteinaceous inhibitors known as phytocystatins (PhyCys). The cystatin inhibitory mechanism is produced by a tight and reversible interaction with their target enzymes. In barley, the cystatin gene family is comprised by 13 members. In this work we have tried to elucidate the role of the C1A cysteine-peptidases and their specific inhibitors (cystatins) in the germination process of the barley grain. Therefore, we selected a representative member of each group/subgroup of C1A peptidases (1 cathepsin B-like, 1 cathepsin F-like, 1 cathepsin H-like and 5 cathepsins L-like). The molecular characterization of the cysteine-peptidases was done and the peptidase-inhibitor interaction was analyzed in vitro and in vivo. A study in the structural basis for specificity of pro-peptide/enzyme interaction in barley C1A cysteine-peptidases has been also carried out by inhibitory assays and the modeling of the three-dimensional structures. The barley grain maturation produces the accumulation of storage proteins (prolamins) in the endosperm which are mobilized during germination to supply the required nutrients until the photosynthesis is fully established. In this work, we have demonstrated the participation of the cysteine-peptidases and their inhibitors in the degradation of the different storage protein fractions (hordeins, albumins and globulins) present in the barley grain. Besides, transgenic barley plants overexpressing or silencing cysteine-peptidases or cystatins were obtained by Agrobacterium-mediated transformation of barley immature embryos to analyze their physiological function in vivo. Preliminary assays were carried out with the T1 grains of several transgenic lines. Comparing the knock-out and the overexpressing lines with the WT, alterations in the germination process were detected and were correlated with their grain hordein content. These data will be validated with the homozygous grains that are being produced through the double haploid technique by microspore culture. Resumen La proteólisis es un proceso metabólico por el cual se lleva a cabo la degradación de las proteínas de un organismo a través de enzimas específicas llamadas proteasas. En plantas, este complejo proceso comprende un entramado de rutas metabólicas que implican, además, diferentes compartimentos subcelulares. En la proteólisis participan numerosas proteasas, principalmente cisteín-, serín-, aspartil-, y metalo-proteasas. Dentro de las cisteín-proteasas, las proteasas tipo papaína o C1A (familia C1, clan CA) están extensamente representadas en plantas terrestres, y se clasifican en catepsinas tipo L, B, H y F. El mecanismo catalítico de estas proteasas está altamente conservado y la triada catalítica formada por los aminoácidos Cys, His y Asn, y a un aminoácido Gln, que parece esencial para el mantenimiento de la conformación activa de la proteína. Las proteasas C1A se sintetizan como precursores inactivos y comprenden un péptido señal en el extremo N-terminal, un pro-péptido y la proteína madura. En cebada hemos identificado 33 cisteín-proteasas de tipo papaína y las hemos clasificado filogenéticamente en 8 grupos diferentes. Cinco de ellos pertenecen a las catepsinas tipo L (5 subgrupos), un grupo a las catepsinas tipo-B, otro a las catepsinas tipo-F y un último a las catepsinas tipo-H. Las proteasas C1A son además las dianas específicas de los inhibidores protéicos de plantas denominados fitocistatinas. El mecanismo de inhibición de las cistatinas está basado en una fuerte interacción reversible. En cebada, se conoce la familia génica completa de las cistatinas, que está formada por 13 miembros. En el presente trabajo se ha investigado el papel de las cisteín-proteasas de cebada y sus inhibidores específicos en el proceso de la germinación de la semilla. Para ello, se seleccionó una proteasa representante de cada grupo/subgrupo (1 catepsina tipo- B, 1 tipo-F, 1 tipo-H, y 5 tipo-L, una por cada subgrupo). Se ha llevado a cabo su caracterización molecular y se ha analizado la interacción enzima-inhibidor tanto in vivo como in vitro. También se han realizado estudios sobre las bases estructurales que demuestran la especificidad en la interacción enzima/propéptido en las proteasas C1A de cebada, mediante ensayos de inhibición y la predicción de modelos estructurales de la interacción. Finalmente, y dado que durante la maduración de la semilla se almacenan proteínas de reserva (prolaminas) en el endospermo que son movilizadas durante la germinación para suministrar los nutrientes necesarios hasta que la nueva planta pueda realizar la fotosíntesis, en este trabajo se ha demostrado la participación de las cisteínproteasas y sus inhibidores en la degradación de las diferentes tipos de proteínas de reserva (hordeinas, albúmins y globulinas) presentes en el grano de cebada. Además, se han obtenido plantas transgénicas de cebada que sobre-expresan o silencian cistatinas y cisteín-proteasas con el fin de analizar la función fisiológica in vivo. Se han realizado análisis preliminares en las semillas T1 de varias líneas tránsgenicas de cebada y al comparar las líneas knock-out y las líneas de sobre-expresión con las silvestres, se han detectado alteraciones en la germinación que están además correlacionadas con el contenido de hordeinas de las semillas. Estos datos serán validados en las semillas homocigotas que se están generando mediante la técnica de dobles haploides a partir del cultivo de microesporas.
Resumo:
Fragmentation of wildlife habitat is a primary driver of global species decline. A major contributor to habitat fragmentation in the United States is rural residential development. Rural development in Colorado is occurring at rates far greater than the national average. Additionally, the lack of state-level planning control coupled with a lack of comprehensive, effective planning tools at the local level creates conditions that contribute to habitat fragmentation in many rural counties. Greater oversight and involvement in land use planning is needed by the state level to assist county governments. This study provides five recommendations to strengthen Colorado state land use policy in order to reduce habitat fragmentation.