6 results on '"Vercillo, Ugo"'
Search Results
2. Reintroduction of the Extinct-in-the-Wild Spix's Macaw (Cyanopsitta spixii) in the Caatinga Forest Domain of Brazil.
- Author
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Purchase, Cromwell, Lugarini, Camile, Purchase, Candice, Ferreira, Ariane, Vercillo, Ugo Eichler, Stafford, Mark L., and White Jr., Thomas H.
- Subjects
WILDLIFE reintroduction ,MACAWS ,WILDLIFE conservation ,EGGS ,ANIMAL sexual behavior ,HABITAT conservation ,EGG incubation ,JOB vacancies - Abstract
We describe efforts to reintroduce the extinct-in-the-wild Spix's Macaw (Cyanopsitta spixii) within its historical range in eastern Brazil. Twenty captive-reared Spix's Macaws were released, along with 15 Blue-Winged Macaws (Primolius maracana), as heterospecific flocks in two events during the dry and rainy seasons of 2022. We monitored the release groups through daily observation and telemetry tracking from early June 2022 to early June 2023. We documented an overall first-year survival of 58.3% (CI: 37.8–78.7%), with 65% of Spix's Macaws establishing a stable area of activity within 5 km of the release site, excluding any temporary long-distance forays. Eighty-five percent of released Spix's Macaws exhibited flock cohesion, including interactions with and integration into wild Blue-Winged Macaw groups at the release site. Several released Spix's Macaws formed pair-bonds with conspecifics and engaged in nest cavity exploration, breeding behavior, and territorial defense of nest sites, with three females also laying and incubating eggs. One nesting pair successfully hatched and reared chicks in an artificial nest cavity. These releases employed a novel reintroduction strategy using a surrogate species model, the sympatric Blue-Winged Macaw, to "mentor" and facilitate post-release adaptation by the target species and increase the total number of individuals in the release cohort. Lastly, participatory monitoring by local citizens is considered a way to engage and involve local communities in species and habitat conservation and potentially create new employment opportunities in the region. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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3. Atlantic Rainforest's Jaguars in Decline
- Author
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GALETTI, MAURO, EIZIRIK, EDUARDO, BEISIEGEL, BEATRIZ, FERRAZ, KÁTIA, CAVALCANTI, SANDRA, SRBEK-ARAUJO, ANA CAROLINA, CRAWSHAW, PETER, PAVIOLO, AGUSTIN, GALETTI, PEDRO MANOEL, JORGE, MARIA LUISA, MARINHO-FILHO, JADER, VERCILLO, UGO, and MORATO, RONALDO
- Published
- 2013
- Full Text
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4. Using Red List Indices to monitor extinction risk at national scales.
- Author
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Raimondo, Domitilla, Young, Bruce E., Brooks, Thomas M., Cardoso, Pedro, van der Colff, Dewidine, de Souza Dias, Braulio Ferreira, Vercillo, Ugo, de Souza, Estevão, Juslén, Aino, Hyvarinen, Esko, von Staden, Lize, Tolley, Krystal, and McGowan, Philip J.K.
- Subjects
ENDANGERED species ,POPULATION viability analysis ,BIOLOGICAL extinction ,BIODIVERSITY ,SPECIES - Abstract
The Red List Index (RLI) measures change in the aggregate extinction risk of species. It is a key indicator for tracking progress toward nine of the Aichi and many proposed post‐2020 Global Biodiversity Framework Targets. Here, we consider two formulations of the RLI used for reporting biodiversity trends at national scales. Disaggregated global RLIs measure changing national contributions to global extinction risk and are currently based on five taxonomic groups, while national RLIs measure changing national extinction risk and are based on taxonomic groups assessed multiple times in country. For 74% of nations, the disaggregated global RLI is currently based on three or fewer taxonomic groups. Meanwhile, national RLIs from selected pilot countries Finland, South Africa, and Brazil are computed from twelve, eight, and nine taxonomic groups, respectively. The national RLI and the disaggregated global RLI measure different aspects of biodiversity, in that the former detects national trends in populations of species for which each country is responsible while the latter provides standardized comparisons of nations' contributions to the global extinction risk of the same species groups. As governments commit to the post‐2020 Global Biodiversity Framework, we encourage them to monitor a standard set of taxonomic groups representing different biomes using both RLI formulations to ensure effective target tracking and accurate feedback on their conservation investments. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
5. Spix's Macaw Cyanopsitta spixii (Wagler, 1832) population viability analysis.
- Author
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Vercillo, Ugo, Oliveira-Santos, Luiz Gustavo, Novaes, Marisa, Purchase, Cromwell, Purchase, Candice, Lugarini, Camile, Ferreira, Ariane, De Marco, Paulo, Marcuk, Vladislav, and Franco, Jose Luiz
- Abstract
Summary: Spix's Macaw Cyanopsitta spixii is one of the most endangered Neotropical Psittacidae species. Extinct in the wild in the year 2000, in June 2022 the first cohort of C. spixii was reintroduced to its original habitat. For a successful reintroduction of the species, it is necessary to examine the viability of the population against natural and external threats and the environmental requirements for success. Thus, this paper presents a "Population Viability Analysis" (PVA) for Spix's Macaw. It used the Vortex and RangeShiftR software, biological and environmental data from a bibliographic survey, and information provided by the field team responsible for the reintroduction of the species, and who work directly with the species in captivity. We found that the minimum viable population (MVP) for reintroduction of the species is 20 individuals. However, considering the impact of disease, drought, hunting, and illegal trafficking, this population can only persist if the release of individuals from captivity occurs annually over the next 20 years combined with the reforestation of natural habitat to support population growth. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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6. Impact and Lessons Learned from A Half-Century of Primate Conservation Action Planning.
- Author
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Reuter, Kim E., Mittermeier, Russell A., Williamson, Elizabeth A., Jerusalinsky, Leandro, Refisch, Johannes, Sunderland-Groves, Jacqui, Byler, Dirck, Konstant, William R., Eichler Vercillo, Ugo, Schwitzer, Christoph, and Rylands, Anthony B.
- Subjects
FIVE year plans ,PRIMATES ,ENDANGERED species ,WILDLIFE conservation - Abstract
Over the last half-century, the world's human population has doubled, impacting almost all ocean and land areas. The threats facing primates in the wild have never been greater or more complex. Primatologists have long been aware of these threats and, since the 1970s, have coordinated efforts to safeguard these threatened species, through the International Union for Conservation of Nature Species Survival Commission (IUCN SSC) Primate Specialist Group (PSG). In an effort to stem the threat of extinction to primates, this group of now 700 experts+ has published 17 conservation action plans since 1977. As we look toward the next half-century, we take stock of the history of primate action planning to better understand the costs and benefits of these plans as a conservation tool. Here, we reviewed all plans published by the IUCN SSC PSG. In total, they described USD 246 million in planned primate conservation programming and were cited 1657 times by others. We found that half of the plans had been assessed in regard to their implementation, although these assessments were not standardized. Those that had been assessed, showed evidence of positive impacts on awareness raising, collaboration, fundraising, project implementation and policy, although the impact varied by plan. For example, three of the plans directly resulted in USD 15.92 million in funds raised; four plans quantified implementation rates, which ranged from 38% to 74% of actions partially or completely achieved 5 years after plan publication; and four plans attributed the gazettement of 19 protected areas across 11 countries as indirect successes following the publication of plans. Considered together, we reflect on the 'return-on-investment' for developing these plans and consider a range of 'lessons learned' for future primate action planning efforts. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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