6 results on '"Dobrovolski, Ricardo"'
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2. The Roots of the Science-Practice Gap: A Materialist View.
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DOBROVOLSKI, RICARDO
- Subjects
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BIODIVERSITY conservation , *CULTURAL pluralism , *ANTHROPOLOGY , *HUNTER-gatherer societies , *OCEAN zoning , *CELL phone users , *PRODUCT obsolescence - Abstract
In the article, the author presents a materialist view on the origin of the science-practice gap as seen during the COVID-19 pandemic. Said gap is the failure to implement known and available solutions to address a problem like the wearing of masks and implementing social isolation during the pandemic. Also cited are the situations in which the gap occurs in ecology and nature conservation.
- Published
- 2022
- Full Text
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3. Unveiling geographical gradients of species richness from scant occurrence data.
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Alves, Davi Mello Cunha Crescente, Eduardo, Anderson Aires, da Silva Oliveira, Eduardo Vinícius, Villalobos, Fabricio, Dobrovolski, Ricardo, Pereira, Taiguã Corrêa, de Souza Ribeiro, Adauto, Stropp, Juliana, Rodrigues, João Fabrício Mota, Diniz‐Filho, José Alexandre F., Gouveia, Sidney F., and Dornelas, Maria
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SPECIES diversity ,SPATIAL variation ,KRIGING ,BIRD diversity ,SPECIES distribution ,KNOWLEDGE gap theory ,BIODIVERSITY ,BIODIVERSITY conservation - Abstract
Aim: Despite longstanding investigation, the gradients of species richness remain unknown for most taxa because of shortfalls in knowledge regarding the quantity and distribution of species. Here, we explore the ability of a geostatistical interpolation model, regression‐kriging, to recover geographical gradients of species richness. We examined the technique with an in silico gradient of species richness and evaluated the effect of different configurations of knowledge shortfalls. We also took the same approach for empirical data with large knowledge gaps, the infraorder Furnariides of suboscine birds. Innovation: Regression‐kriging builds upon two cornerstones of geographical gradients of biodiversity, the spatial autocorrelation of species richness and the conspicuous association of species with environmental factors. With this technique, we recovered a simulated gradient of richness using < 0.01% of sampling sites across the region. The accuracy of the regression‐kriging is higher when input samples are more evenly distributed throughout the geographical space rather than the environmental space of the target region. Moreover, the accuracy of this method is more sensitive to the sufficiency of sampling effort within cells than to the quantity of sampled localities. For Furnariides birds, regression‐kriging provided a geographical gradient of species richness that resembles purported patterns of other groups and illustrated ubiquitous shortfalls of knowledge about bird diversity. Main conclusions: Geostatistical interpolation, such as regression‐kriging, might be a useful tool to overcome shortfalls in knowledge that plague our understanding of geographical gradients of biodiversity, with many applications in ecology, palaeoecology and conservation. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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4. Conservation Biogeography faced with agricultural expansion: conflicts and priorities
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DOBROVOLSKI, Ricardo, DINIZ FILHO, José Alexandre Felizola, and LOYOLA, Rafael Dias
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Prioridades Globais de Conservação da Biodiversidade ,CIENCIAS BIOLOGICAS::ECOLOGIA [CNPQ] ,Planejamento Sistemático de Conservação ,IMAGE ,Global Biodiversity Conservation Priorities ,Agricultura ,Brasil ,Agriculture ,Systematic Conservation Planning ,Protected Areas ,Land Use And Land Cover Change ,Mammals Conservation ,Conservação da Biodiversidade ,Hot spots de Biodiversidade ,Mudança de uso e cobertura do solo ,Biodiversity Conservation ,Biodiversity Hotspots ,Áreas Protegidas ,Conservação de Mamíferos ,Brazil - Abstract
A agricultura é a atividade humana com maior impacto sobre o ambiente. Particularmente, ela representa a maior ameaça à biodiversidade. No futuro, essa atividade deve expandir-se com o aumento populacional humano, o aumento do consumo e a produção de biocombustíveis a partir dos alimentos. Para entender os possíveis impactos dessa expansão sobre a biodiversidade, nós utilizamos cenários de mudança de uso do solo entre 2000 e 2100 do IMAGE (Integrated Model to Access Global Environment) para testar as seguintes hipóteses: (i) as áreas consideradas como prioridades globais de conservação pelas ONGs internacionais serão preferencialmente impactadas pela expansão agrícola no século XXI; (ii) há um conflito entre áreas prioritárias para a conservação de carnívoros e a expansão agrícola e esse conflito pode ser reduzido com a incorporação da informação sobre expansão agrícola no processo de priorização; (iii) a integração entre os países para o planejamento da conservação pode ser favorável à proteção da biodiversidade e à produção agrícola; (iv) no Brasil, as áreas protegidas serão impactadas pela expansão agrícola no futuro e esse impacto será diferente entre áreas de proteção integral e áreas de uso sustentável. Nós encontramos os seguintes resultados: (i) o impacto sobre as áreas prioritárias para a conservação depende dos critérios pelos quais elas foram definidas, assim, as áreas definidas por sua alta vulnerabilidade estão atualmente mais impactadas do que áreas de baixa vulnerabilidade. Ao longo do século XXI, o impacto geral da agricultura deve aumentar, mas a diferença entre os dois tipos de prioridades se mantém, exceto para as High Biodiversity Wilderness Areas, definidas por sua baixa vulnerabilidade, mas que nos cenários mais pessimistas podem ter um impacto agrícola semelhante ao das áreas de alta vulnerabilidade; (ii) há uma alta congruência espacial entre áreas com elevado uso agrícola no futuro e áreas prioritárias para a conservação de carnívoros; esse conflito pode ser reduzido se o processo de priorização incluir as informações sobre a expansão agrícola; a incorporação dessa informação, entretanto, provoca uma profunda alteração na distribuição das áreas prioritárias e reduz o número de populações de carnívoros protegidas; (iii) a integração entre os países para a criação de um conjunto de áreas prioritárias para conservação que represente 17% da superfície terrestre pode proteger 19% mais populações de mamíferos sem reduzir a produção de alimentos, se comparada a uma estratégia em que cada país busque proteger seu território independentemente; (iv) o impacto da agricultura no Brasil deve aumentar até o fim do século XXI, ameaçando inclusive as áreas protegidas e o seu entorno. Esse impacto, porém, não deve ser diferente entre as áreas de uso sustentável e aquelas de proteção integral. Assim, a expansão agrícola deve continuar a ser uma importante ameaça à biodiversidade no futuro, atingindo inclusive áreas de especial interesse para a conservação. As ações de conservação devem ser planejadas levando em consideração essa ameaça, a fim de reduzir seus impactos potenciais. Para isso, países como o Brasil devem reforçar sua vigilância sobre a expansão agrícola e a maneira como essa atividade é desenvolvida. Além disso, a integração internacional dos esforços de conservação deve ser buscada, dados seus benefícios para a biodiversidade e para a produção de alimentos. E por fim, a humanidade deve optar por formas de produção agrícola que reduzam seus impactos, inclusive evitando sua expansão futura, mas que possam satisfazer as necessidades da população humana globalmente. Agriculture is the human activity with the greatest impact on the environment. Specifically, it represents the greatest threat to biodiversity. In the future, this activity should expand due to population growth, increased consumption and production of biofuels from food. To understand the possible impacts of this expansion on biodiversity, we used scenarios of land use change between 1970 and 2100 from IMAGE (Integrated Model to Access Global Environment) to test the following hypotheses: (i) areas considered as global priorities for conservation by international NGOs will be preferentially impacted by agricultural expansion in the XXI century, (ii) there is a conflict between the priority areas for carnivores conservation and agricultural expansion, and this conflict can be reduced by incorporating information on agricultural expansion in the prioritization process, (iii) the integration among countries for conservation planning may benefit both biodiversity and agricultural productivity, (iv) Brazilian protected areas will be impacted by agricultural expansion in the future and this impact will differ between protected areas of integral protection and those of sustainable use. We found that: (i) the impact on priority areas for conservation depends on the criteria by which they were set, so that areas defined by its high vulnerability are currently most affected than those of low vulnerability. Throughout the XXI century this impact is expected to increase, although the difference between the two types of priorities remains, except for High Biodiversity Wilderness Areas, defined by their low vulnerability in current time, but for which most pessimistic scenarios forecast an impact similar to priority areas of high vulnerability, (ii) there is a high spatial congruence between areas with high agricultural use in the future and priority areas for conservation of carnivores. This conflict can be reduced if the prioritization process include information on agricultural expansion; this incorporation, however, causes a profound change in the distribution of priority areas and reduces the number of protected carnivore populations, (iii) the integration of countries to create a set of priority areas for conservation that represents 17% of the land surface can protect 19% more mammal populations without reducing food production, compared to a strategy in which each country seeks to protect its territory independently, and (iv) the impact of agriculture in Brazil is expected to increase until the end of the century, threatening even the protected areas and their surroundings. This impact, however, should not be different between areas of sustainable use and those of integral protection. We conclude that agricultural expansion should remain a major threat to biodiversity in the future, even in areas of special interest for conservation. Conservation actions should be planned taking into account this threat in order to reduce their potential impacts. For this, countries like Brazil should strengthen its surveillance on agricultural expansion and on how this activity is developed. Furthermore, the integration of international conservation efforts should be pursued, given its benefits for biodiversity and food production. Finally, humanity must choose methods of agricultural production that reduce its impacts, including avoiding its future expansion, so as to meet the increasing needs of a human population globally.
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- 2012
5. Climate change might drive species into reserves: a case study of the American bullfrog in the Atlantic Forest Biodiversity Hotspot.
- Author
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LOYOLA, Rafael D., NABOUT, João Carlos, TRINDADE-FILHO, Joaquim, LEMES, Priscila, URBINA-CARDONA, José Nicolás, DOBROVOLSKI, Ricardo, SAGNORIA, Maíra Dalia, and DINIZ-FILHO, José Alexandre F.
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BULLFROG ,CLIMATE change ,FOREST biodiversity & climate ,INTRODUCED species ,BIODIVERSITY conservation - Abstract
Habitat loss is the most important cause of species extinction worldwide that can act as a catalyst of biological invasions. To prevent species extinction, in-situ conservation strategies still figure as the cornerstone of biodiversity conservation. However, with expected broad-scale environmental changes likely to produce species range shifts and foster alien species invasions, will existing networks of protected areas be able to guarantee the long-term persistence of the species they should protect? Here we evaluate the potential impact of climate change in driving the invasive American bullfrog Lithobates catesbeianus into reserves currently established in the Atlantic Forest Biodiversity Hotspot. We produced potential geographic distribution maps both for current time and for 2050 using eight species distribution modeling methods and three different climate models to evaluate model uncertainty. We then overlaid a consensus prediction of species distribution to the existing network of protected areas. We show that, under climate change, L. catesbeianus is likely to colonize reserves more efficiently than today, putting in jeopardy native amphibian species thought to be protected in such places. We also suggest some policy recommendations to mitigate such potential impact on the Atlantic Forest native amphibian fauna. [ABSTRACT FROM AUTHOR]
- Published
- 2012
6. Agricultural expansion and the fate of global conservation priorities.
- Author
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Dobrovolski, Ricardo, Diniz-Filho, José, Loyola, Rafael, and Marco Júnior, Paulo
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AGRICULTURE & the environment ,BIODIVERSITY conservation ,LAND use planning ,ECOLOGICAL regions ,CONSERVATION organizations - Abstract
Non-governmental organizations have proposed nine different global prioritization schemes, some of them focusing on areas with low vulnerability (a proactive reasoning) and some others targeting areas with high vulnerability (a reactive reasoning). The main threat to the remaining natural habitats of these areas is the expansion of agriculture. We evaluated the spatial congruence between agricultural land cover and global conservation priority areas in the present and in the future using a spatial model of land use cover change from 2000 to 2100. We showed that by the year 2000, the extent of agriculture was larger in reactive priority areas than in the rest of the world, while it was smaller in areas highlighted as important under proactive approaches. During the twenty-first century, we found a general increase in agriculture area and the difference between the approaches of conservation schemes is expected to hold true, although we found that high-biodiversity wilderness areas (HBWA), a proactive scheme, may be specially affected in certain scenarios of future change. These results suggest an increase in conservation conflicts over this century. In face of agricultural expansion, both kinds of prioritization approaches are important, but different strategies of protection are necessary (e.g., reactive approaches need the urgent protection of remnant habitats, while proactive ones have space to create megareserves). Further, conservation organizations must include agriculture expansion data and their uncertainty in conservation planning in order to be more successful in biological conservation. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
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