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1.
J Environ Manage ; 359: 120864, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38714029

RESUMEN

Deforestation rates in the Amazon have markedly increased in the last few years, affecting non-protected and protected areas (PAs). Brazil is a hotspot of Protected Area Downgrading, Downsizing, and Degazettement (PADDD) events, with most events associated with infrastructure projects. Despite the threats dams impose on PAs, there is a knowledge gap in assessing deforestation in PAs around large dams in the Amazon. This study investigates how deforestation affects Biodiversity Protection Areas (BioPAs) and Indigenous Lands around the Jirau and Santo Antônio (JSA) dams (Madeira River, Rondônia) and Belo Monte dam (Xingu River, Pará) in the Brazilian Amazon. We compared clear-cutting between PAs and control areas and the annual rates of forest change between pre-dam and post-dam periods. We discussed deforestation-related factors (e.g., PADDD events and the presence of management plans or councils). Our results show an increase in deforestation after the operation of the dams when environmental control from licensing agencies decreases and other political and economic factors are in practice. Indigenous Lands experienced a significant increase in deforestation around the Belo Monte dam, which is associated with the demarcation process and land conflicts. Surrounding the JSA dams, sustainable use BioPAs showed high deforestation rates, and 27 PADDD events were reported, four directly related to dams. In addition to dams, deforestation was associated with the crisis of Brazilian democracy and the weakening of environmental policies. In conclusion, the weak environmental control from environmental licensing agencies during dam operation and PADDD events have contributed to increased deforestation rates and additional stresses in the Amazon.


Asunto(s)
Biodiversidad , Conservación de los Recursos Naturales , Brasil , Ríos , Bosques
2.
Conserv Biol ; 34(2): 427-437, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31386221

RESUMEN

Brazil hosts the largest expanse of tropical ecosystems within protected areas (PAs), which shelter biodiversity and support traditional human populations. We assessed the vulnerability to climate change of 993 terrestrial and coastal-marine Brazilian PAs by combining indicators of climatic-change hazard with indicators of PA resilience (size, native vegetation cover, and probability of climate-driven vegetation transition). This combination of indicators allows the identification of broad climate-change adaptation pathways. Seventeen PAs (20,611 km2 ) were highly vulnerable and located mainly in the Atlantic Forest (7 PAs), Cerrado (6), and the Amazon (4). Two hundred fifty-eight PAs (756,569 km2 ), located primarily in Amazonia, had a medium vulnerability. In the Amazon and western Cerrado, the projected severe climatic change and probability of climate-driven vegetation transition drove vulnerability up, despite the generally good conservation status of PAs. Over 80% of PAs of high or moderate vulnerability are managed by indigenous populations. Hence, besides the potential risks to biodiversity, the traditional knowledge and livelihoods of the people inhabiting these PAs may be threatened. In at least 870 PAs, primarily in the Atlantic Forest and Amazon, adaptation could happen with little or no intervention due to low climate-change hazard, high resilience status, or both. At least 20 PAs in the Atlantic Forest, Cerrado, and Amazonia should be targeted for stronger interventions (e.g., improvement of ecological connectivity), given their low resilience status. Despite being a first attempt to link vulnerability and adaptation in Brazilian PAs, we suggest that some of the PAs identified as highly or moderately vulnerable should be prioritized for testing potential adaptation strategies in the near future.


Evaluación de la Vulnerabilidad y Adaptación al Cambio Climático de Áreas Protegidas en Brasil Resumen Brasil alberga la mayor extensión de ecosistemas tropicales dentro de áreas protegidas (AP), que protegen la biodiversidad y sustentan a poblaciones humanas tradicionales. Evaluamos la vulnerabilidad al cambio climático de 993 AP brasileñas terrestres y costeras-marinas mediante la combinación de indicadores de riesgo de cambio climático con indicadores de la resiliencia de AP (tamaño, cobertura de vegetación nativa y la probabilidad de transición en la vegetación como consecuencia del cambio climático). Esta combinación de indicadores permite la identificación de amplias rutas de adaptación al cambio climático. Diecisiete AP (20,611 km2 ) fueron altamente vulnerables y se localizaron principalmente en el Bosque Atlántico (7 AP), El Cerrado (6) y la Amazonía (4). Doscientos cincuenta y ocho AP (756,569 km2 ), localizadas principalmente en la Amazonía, tuvieron vulnerabilidad media. En la Amazonía y el oeste de El Cerrado, el severo cambio climático proyectado y la probabilidad de transición de vegetación dirigida por el clima incrementó la vulnerabilidad, a pesar del estado de conservación generalmente bueno de las AP. Más de 80% de las AP con vulnerabilidad alta o media son manejadas por poblaciones indígenas. Por lo tanto, además de los riesgos potenciales para la biodiversidad, también hay amenazas para el conocimiento tradicional y las formas de vida de la gente que habita en esas AP. En por lo menos 870 AP, principalmente en el Bosque Atlántico y la Amazonía, la adaptación podría suceder con poca o ninguna intervención debido al bajo riesgo de cambio climático, estatus de resiliencia alta, o ambos. Por lo menos 20 AP en el Bosque Atlántico, El Cerrado y la Amazonía deberían ser objetivo de intervenciones mayores (e.g., mejoramiento de la conectividad ecológica), dada su estatus de resiliencia baja. A pesar de que es un primer intento para vincular vulnerabilidad y adaptación en AP brasileñas, sugerimos que algunas de las AP identificadas como alta o moderadamente vulnerables se deben priorizar para probar posibles estrategias de adaptación en un futuro próximo.


Asunto(s)
Conservación de los Recursos Naturales , Ecosistema , Biodiversidad , Brasil , Cambio Climático , Bosques , Humanos
3.
Parasitol Res ; 119(7): 2149-2157, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32424553

RESUMEN

Global investigations have implicated water buffalo (Bubalus bubalis) as a potential source of zoonotic Cryptosporidium and Giardia parasites which may pose a threat to human health. In Australia, buffalo are a feral pest that have colonised the floodplains, wetlands and woodlands of Indigenous owned and managed Arnhem Land, in tropical monsoonal Northern Australia. Indigenous people from the remote community Ngukurr have raised concerns about the potential threat to their health from shared use of surface waters inhabited by buffalo, in the South East Arnhem Land Indigenous Protected Area (SEAL IPA), Northern Australia. Surface waters are valued by local Indigenous people for spiritual and customary reasons, bush foods, medicines and drinking water. Here, we used molecular methods to characterise Cryptosporidium spp. and Giardia duodenalis assemblages from feral water buffalo living in the SEAL IPA to determine potential zoonotic risks to health of Indigenous people through co-use of surface water billabongs. Buffalo faecal DNA was screened for Cryptosporidium and Giardia using the 18S rRNA gene. Giardia were also screened using Glutamate hydrogenase (gdh) and ßeta-giardin (ß-giardin) genes. DNA sequencing identified C. ryanae in 9.9% (31/313) and G. duodenalis assemblage E 1.9% (6/313) in buffalo. Cryptosporidium ryanae is not considered zoonotic and G. duodenalis assemblage E is a livestock assemblage that has been reported in humans. Carriage of G. duodenalis assemblage E in buffalo may present a disease risk for Indigenous people utilising billabongs, according to customary practice.


Asunto(s)
Búfalos/parasitología , Cryptosporidium/aislamiento & purificación , Giardia/aislamiento & purificación , Animales , Animales Salvajes , Australia , Cryptosporidium/clasificación , Cryptosporidium/genética , Heces/parasitología , Giardia/clasificación , Giardia/genética , Humanos , Proteínas Protozoarias/genética , ARN Ribosómico 18S/genética
4.
Explore (NY) ; 20(6): 103042, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39182272

RESUMEN

Indigenous communities across Canada persist at the forefront of environmental and climate-related challenges, necessitating a concerted effort to integrate traditional Indigenous land-based knowledge and practices that inherently promote environmental protection and resilience. Using a decolonial feminist theoretical framework, this research centers on Indigenous community perspectives on the climate crisis and their land-based adaptions. Such an approach empowers Indigenous communities to reclaim agency over their narratives and shape research agendas congruent with their lived realities and aspirations. The study concludes by promoting the imperative of revitalizing traditional Indigenous land-based knowledge, practices and relationships with their ancestral lands. Despite emerging recognition within the scientific literature and international agreements, such as the Paris Agreement, of the significance of traditional Indigenous land-based knowledge, many climate mitigation and adaptation initiatives continue to overlook Indigenous participation at various decision-making junctures. Hence, this paper advocates the necessity for international frameworks to acknowledge and integrate traditional knowledge systems and Indigenous participation across national borders, fostering inclusive climate crisis solutions that resonate with Indigenous communities' perspectives and experiences.

5.
Explore (NY) ; 20(5): 102985, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38403549

RESUMEN

This paper represents Youth's involvement in land-based learning in Indigenous culture camps (LLICP) in a powerful and innovative approach to addressing the pressing global issue of climate change. Following Indigenist and relational approaches, we (Indigenous and non-Indigenous youth and educators) explore the critical aspects of this initiative, highlighting its significance and potential impact. Indigenous communities have long held a deep connection with the land and possess traditional knowledge that is invaluable in combating climate change. The LLICP initiative involves organizing cultural camps designed for youth from diverse backgrounds to learn from Indigenous elders and community leaders about the vital relationship between the environment and Indigenous cultures. The LLICP provides a unique opportunity for young people to engage with Indigenous wisdom, traditional practices, and land-based teachings. Through Indigenous elders and knowledge-keepers guidelines, we learned a holistic understanding of sustainable living, biodiversity conservation, and the importance of preserving ecosystems. Our learning helped us, particularly our youths, to become proactive stewards of the environment and advocates for climate action. The LLICP fosters cross-cultural understanding and collaboration, encouraging a sense of unity among youths. The LLICP inspires innovative solutions to climate-related challenges and empowers youth to take leadership roles in their communities, advocating for sustainable policies and practices. The LLICP offers a powerful means of engaging young people in the fight against climate change while respecting and honoring Indigenous knowledge and heritage. It is a promising step towards a more sustainable and resilient future for all.


Asunto(s)
Cambio Climático , Conservación de los Recursos Naturales , Adolescente , Humanos , Cultura , Ecosistema , Indígena Canadiense , Aprendizaje , Saskatchewan
6.
Hum Nat ; 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39162965

RESUMEN

We present the first published ethnographic description of landscape burning by Hadza hunter-gatherers of northern Tanzania and identify environmental, social, and cultural influences on Hadza landscape burning, thereby broadening the ethnographic record of anthropogenic burning practices described for hunter-gatherer communities. We report interview data collected in 2022 and 2023, describing their practices and attitudes regarding the causes and consequences of burning. We provide context by comparing our observations with those recorded for hunting and gathering populations in Africa, Australia, and North America. Hadza landscape burning is generally a solitary and male-dominated activity, contrary to ethnographic accounts of Indigenous landscape burning from North America and Australia. The primary goals stated by Hadza for landscape burning were improved hunting, reduced hazards from dangerous animals, and to reduce the density of livestock. Firsthand observations suggest that landscape burning has decreased over the past 20 years, and this historical trend is supported by interviews. Satellite imagery also suggests an overall decrease in burning activity in the region from 2001 to 2022. Among the Hadza, landscape burning is a culturally influenced and strongly gender-biased activity that is rapidly disappearing. Because burning can radically transform landscapes, these practices often generate or amplify conflicts of interest between groups with different land use strategies. Hadza report serious social conflict with pastoralists over landscape burning, and our study suggests this tension has constrained the practice in the past two decades.

7.
Toxics ; 11(10)2023 Oct 14.
Artículo en Inglés | MEDLINE | ID: mdl-37888711

RESUMEN

The Yanomami Indigenous Land in the Amazon has a long history of illegal artisanal gold mining, leading to concerns about mercury (Hg) contamination. This study has conducted a geochemical analysis to assess Hg contamination from these mining activities. Geological materials, including river water and stream sediments, were collected from 14 predetermined points based on the Geological Survey of Brazil's methodology. The results revealed that water samples did not show Hg contamination above the limits set by the National Council of the Environment (Conama) Resolution 357. However, two stream sediment samples, particularly PJS009 and PJS010 collected from the Mucajaí River, exceeded the Conama Resolution 454's limit of 0.17 mg/kg. A Hg content of 0.344 mg/kg was found in the sediment sample PJS009, the one collected further upstream in the Mucajaí River, and 1.386 mg/kg was found in sample PJS010, also in the Mucajaí River in the region shortly before the Fumaça Waterfall, indicating that the sediments of the Mucajaí River may be contaminated with Hg from the Fumaça Waterfall upstream.

8.
Sci Total Environ ; 807(Pt 3): 150998, 2022 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-34656576

RESUMEN

The Cerrado biome covers approximately 20% of Brazil and it is crucial for the Water, Food, Energy, and Ecosystems (WFEE) nexus. Thus, in recent years, large areas of the undisturbed Cerrado have been converted into farmland. In this biome, according to the Brazilian Forest Code, farmers need to keep 20% of native vegetation (Legal Reserves - LRs). By exploring combined and isolated impacts of different scenarios of LR and Protected area (PA) arrangements, this study evaluated the importance of complementarity between LR compliance and the amount of PAs (including Conservation Units - CUs and Indigenous Lands - ILs) to reduce deforestation and conserve native vegetation in the Cerrado. Seven scenarios were investigated: a scenario that considers the current PA and the LR values foreseen in the Native Vegetation Protection Law - NVPL; three scenarios focused on production; and three focused on conservation. Considering the trend of the current scenario, the estimated loss of native vegetation will be 30% (30.6 million ha) by 2070. According to the model simulations, for two periods (2050 and 2070), the LR Elimination scenario (LRE) would cause a greater loss of native vegetation than the PA Elimination (PAE), and as expected, the exclusion of both (PALRE) would provide a greater loss of native vegetation. Native vegetation is concentrated mainly on agricultural properties. Taking our conservation-oriented scenarios as an example of conservation strategies, if there were no financial, practical, political, social or personal constraints, there is no doubt that the CPALRI scenario (Creation of Protected Areas and Legal Reserve Increase) is the best trajectory for conserving biodiversity. Therefore, private properties, through LRs, are essential for efficient planning of land use/cover as they ensure security in the WFEE nexus. The resulting projected scenarios are important to help decision makers in territorial planning and how to arbitrate territorial demands aiming at the rational use of the natural resources of the Cerrado.


Asunto(s)
Conservación de los Recursos Naturales , Ecosistema , Brasil , Conservación de los Recursos Naturales/legislación & jurisprudencia
9.
Artículo en Inglés | MEDLINE | ID: mdl-31878049

RESUMEN

Conservation and environmental management have been reported as offering opportunities to substantially improve the wellbeing of Indigenous people. Using the holistic wellbeing impact evaluation (W-IE) approach-well suited for use in Indigenous communities-we interviewed 190 Indigenous Australians across four communities. All communities were involved in the Indigenous land and sea management programs (ILSMPs). Our study explored the conceptualisation of 'wellbeing' by participants. In particular, we were interested in the aspects of wellbeing perceived to be affected by ILSMPs. Out of the 26 wellbeing factors explored, 'Health centres'; 'Language'; 'Schools'; and 'Safe community' emerged as being of highest importance to the largest percentage of the respondents. When grouped using principle components analysis (PCA), the 'Community and society' domain emerged as the most important; accounting for 52% of the overall importance of all wellbeing factors. The second most important domain was the 'Country and culture', contributing 31%. Lastly, 'Economic aspects' contributed only 17%. Respondents believed that ILSMPs have played a considerable causal role in improving wellbeing, by positively changing factors most important to them. Specifically, 73% of perceived causal links were related to improvements in the 'Country and Culture' and 23% to 'Community and Society' domain. We thus conclude that land management for Indigenous people is much more than ecological or environmental management with ILSMPs, perceived to cause a wide range of cultural and social benefits. We also propose ways in which the future design of such programs could be improved to further increase benefits.


Asunto(s)
Programas de Gobierno , Nativos de Hawái y Otras Islas del Pacífico/psicología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Australia , Ecología , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Satisfacción Personal , Encuestas y Cuestionarios , Adulto Joven
10.
Ambio ; 48(1): 89-98, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29730792

RESUMEN

Combining insights from literature on the Theory of Change, Impact Evaluation, and Wellbeing, we develop a novel approach to assessing impacts. Intended beneficiaries identify and rate factors that are important to their wellbeing, their satisfaction with those factors now, and before an intervention. Qualitative responses to questions about perceived changes and causes of change are linked to quantitative data to draw inferences about the existence and/or importance of impact(s). We use data from 67 Ewamian people, in a case study relating to Indigenous land management, to provide proof of concept. 'Knowing that country is being looked after' and 'Having legal right/access to the country' were identified as important to wellbeing, with perceptions that Native Title determination, declared Indigenous Protected Area and associated land management programs have had a significant and positive impact on them. Further method testing might determine the utility of this approach in a wide range of settings.


Asunto(s)
Conservación de los Recursos Naturales , Satisfacción Personal , Australia
11.
Ecohealth ; 16(1): 171-176, 2019 03.
Artículo en Inglés | MEDLINE | ID: mdl-30311017

RESUMEN

Many Indigenous Australians hold cultural, ecological and language knowledge, but common representations of Indigenous Australians focus on social disadvantage and poor comparisons with other Australians in education, employment and health. Indigenous Land Management works with Indigenous people's cultural, ecological and language expertise, employing Indigenous people in activities contributing to biodiversity conservation. The Interplay research surveyed 841 Indigenous people in remote communities. Those employed in land management reported greater participation in cultural activities, language knowledge, and belief that their land was looked after. These related assets provide an opportunity for policy approaches based on Indigenous people's strengths and contribution to Australia.


Asunto(s)
Conservación de los Recursos Naturales/métodos , Agencias Gubernamentales/organización & administración , Nativos de Hawái y Otras Islas del Pacífico/educación , Adolescente , Adulto , Australia , Competencia Cultural , Ecología , Femenino , Estado de Salud , Humanos , Relaciones Interpersonales , Lenguaje , Masculino , Adulto Joven
12.
Acta amaz ; 41(1): 91-102, mar. 2011. mapas
Artículo en Portugués | LILACS, VETINDEX | ID: lil-574699

RESUMEN

O objetivo do artigo é analisar as transformações observadas nos sistemas indígenas de manejo dos recursos naturais no Alto Rio Negro, Noroeste Amazônico, devido à urbanização intensa e acelerada de algumas localidades e aos processos migratórios ocorridos nas últimas décadas. Nossos dados foram obtidos por meio de pesquisas etnográficas e agroeconômicas, associadas ao Sistema de Informação Geográficas para análise de população, direitos fundiários e paisagens na área periurbana de São Gabriel da Cachoeira, a principal cidade da região. As comunidades indígenas utilizam um território tradicional, onde se articulam diversos tipos de direitos fundiários sobre os recursos naturais, desde o uso individual exclusivo até a propriedade comum. Na região periurbana, a propriedade privada da terra se tornou dominante. No entanto, por causa da escassez crescente dos recursos naturais ao redor da cidade, as famílias migrantes negociam seus direitos fundiários no âmbito de uma rede social extensa, criando assim uma estratégia multilocal. Esta pode ser entendida como manifestação da adaptabilidade dos sistemas tradicionais de manejo dos recursos naturais.


We analyse the transformations in indigenous resource management due to urbanization and migratory flows in the Upper Rio Negro, Northwest Amazon. Data were obtained from ethnographic and agro-economic research, combined with a GIS analysis of population, land tenure and landscape distribution in the peri-urban zone of São Gabriel da Cachoeira, the main town of the region. Each indigenous community is associated with a traditional territory, within which are articulated many kinds of resource use rights, ranging from individual exclusive ownership to common property. In the peri-urban area, private ownership has become the main land-use right. Due to the increasing scarcity of available resources around São Gabriel, newly arrived indigenous families have to negotiate land-use rights within their large kinship networks and to resort to a multilocal strategy. This multilocal land-use system may be seen as an expression of the adaptation of traditional natural resources management.


Asunto(s)
Humanos , Urbanización , Características de la Residencia , Pueblos Indígenas
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