Habitat connectivity of threatened ungulate species in a native savanna landscape of northern South America

Mammalian Biology, Journal Year: 2024, Volume and Issue: 104(3), P. 259 - 275

Published: April 22, 2024

Abstract The native savanna ecosystem of the Orinoquia region is habitat 50% wild ungulate species reported for Colombia. Over last 20 years, this high diversity has been strongly threatened by human transformation natural land cover causing connectivity loss habitats. lacks a biological analysis with multi-species approach involving groups that are representative such as ungulates. Understanding spatial distributions suitable areas and main habitats act primary in these landscapes fundamental design conservation strategies. We use an occurrence dataset lowland tapir ( Tapirus terrestris ), white-tailed deer Odocoileus virginianus white-lipped peccary Tayassu pecari ) development species’ potential distribution models, binarization process, morphological pattern analysis. This information was used modeling dispersal corridors connecting core focal using randomized shortest path algorithm quantifying weighted global metrics. Our results suggest integral corridor least-cost routes between landscape on middle basins rivers Meta River. These associated fluvial dendritic systems connected, while eastern part disconnected. discuss how application knowledge ecology might improve management metapopulations region.

Language: Английский

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Big Cat Mortality in Subsistence Hunts in Amazonia

Wildlife Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

ABSTRACT We estimate the annual mortality of big cats ( Panthera onca and Puma concolor ) resulting from subsistence hunts in two Amazonian Extractive Reserves. Leveraging data a participatory biodiversity monitoring program, which records outcomes hunting forays, we treat set all carried out given year, k , as an ensemble Bernoulli experiments where each hunt may or not result cat killing with probability p . From this premise, built Bayesian model to number killed binomial random variable parameters that 48 (95% CI: 18–92) are annually study area, is consistent independent for same area within magnitude estimates other sites. Our findings underscore contribution mortality.

Language: Английский

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Jaguar (Panthera onca) density and population size across protected areas and indigenous lands in the Amazon biome, its largest stronghold

Biological Conservation, Journal Year: 2025, Volume and Issue: 303, P. 111010 - 111010

Published: Feb. 17, 2025

Language: Английский

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A multi-species corridor between the Andean Amazonian and Amazon floodplain landscapes: prioritizing ecological connectivity areas for jaguar and threatened ungulates in the north-eastern of South America

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(1)

Published: April 3, 2025

Language: Английский

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Publication trends and captive population dynamics: complementary insights for advancing conservation efforts of endangered Brazilian wild cats

Biodiversity and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Language: Английский

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Low human disturbance levels alter movement patterns and induce behavioural changes in an apex predator

Biological Conservation, Journal Year: 2025, Volume and Issue: 309, P. 111278 - 111278

Published: June 5, 2025

Language: Английский

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Using historical habitat loss to predict contemporary mammal extirpations in Neotropical forests

Conservation Biology, Journal Year: 2024, Volume and Issue: 38(4)

Published: March 8, 2024

Abstract Understanding which species will be extirpated in the aftermath of large‐scale human disturbance is critical to mitigating biodiversity loss, particularly hyperdiverse tropical biomes. Deforestation strongest driver contemporary local extinctions forests but may occur at different tempos. The 2 most extensive forest biomes South America—the Atlantic Forest and Amazon—have experienced historically divergent pathways habitat loss decay, providing a unique case study investigate rates persistence on single continent. We quantified medium‐ large‐bodied mammal across these elucidate how landscape configuration affects their associated ecological functions. collected occurrence data for 617 assemblages (>1 kg) Amazon. Analyzing natural cover based satellite (1985–2022), we employed descriptive statistics generalized linear models (GLMs) ecospecies patterns relation landscapes. subregional erosion Amazonian assemblage diversity since 1970s mirrors that observed colonial conquest Forest, given 52.8% all mammals are now similar trajectory. Four out 5 large were prone extirpation, whereas 53% vulnerable extirpation. Greater increased likelihood both These trends reflected median 63.9% higher than Amazon, appears moving toward turning point degradation. contrasting trajectories Amazon domains underscore importance considering historical regional conservation strategies. By focusing identifying essential functions with vertebrate species, planning management practices can better informed.

Language: Английский

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Spatiotemporal relationship between agriculture, livestock, deforestation, and visceral leishmaniasis in Brazilian legal Amazon

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 15, 2024

Language: Английский

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Moving beyond simplistic representations of land use in conservation

Conservation Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Land use is both a major cause of the biodiversity crises and potential solution to it. Decisions about land are made in complex social–ecological systems, yet conservation research, policy, practice often neglect diverse dynamic nature use. A deeper integration system science provides opportunities this context, through transfer concepts, data, methodologies. Specifically, closer exchange between land‐use data developers users will enable common terminology better use, allowing move beyond coarse land‐cover representations Similarly, archetyping regionalization approaches can help embrace, rather than oversimplify, diversity actors practices. Finally, systematically linking portfolios pressures on biodiversity, their direct impact habitat, represent map co‐occurring interacting threats. Together, policymakers planners recognize often‐complex wicked challenges related land, for more context‐specific policymaking planning, targeted interventions.

Language: Английский

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Small-bodied mammal diversity facets vary discretely across an understudied ecotone in the western Amazon-Cerrado

Mammalian Biology, Journal Year: 2024, Volume and Issue: 104(2), P. 129 - 140

Published: Jan. 19, 2024

Language: Английский

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