Efficacy of species distribution models (SDMs) for ecological realms to ascertain biological conservation and practices

Biodiversity and Conservation, Journal Year: 2023, Volume and Issue: 32(10), P. 3053 - 3087

Published: June 20, 2023

Language: Английский

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Conservation crisis? Status of jaguars Panthera onca in Corcovado National Park, Costa Rica

Oryx, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: Jan. 23, 2025

Abstract Maintaining jaguar Panthera onca subpopulations throughout Mesoamerica is vital to range-wide conservation. Corcovado National Park in Costa Rica critical habitat for the Osa Peninsula subpopulation. There a debate regarding whether jaguars this are state of crisis. To examine this, we implemented long-term camera-trap monitoring during 2015–2021. Using spatially explicit Jolly–Seber model estimated populations and distribution our study area. Additionally, reran using constrained area compare findings with those previous study. Trends abundance indices population estimates 2015–2021 indicate that has increased over time. Our density also fall within range densities reported relatively stable elsewhere. same as prior study, duration were mostly comparable estimates. results suggest may not be Rather, provide further hope Peninsula. They do not, however, diminish importance continued conservation efforts. These will remain both inside outside Park, threats appear have persisted

Language: Английский

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Interspecific patterns of small cats in an intraguild-killer free area of the threatened Caatinga drylands, Brazil

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(4), P. e0284850 - e0284850

Published: April 21, 2023

The semi-arid Caatinga is the largest dry forest ecoregion in Americas; nevertheless, it experiencing alarming rates of habitat loss. Most vegetation fragments biome are either unprotected or within private lands; however, these areas susceptible to anthropogenic activity, and often have presence non-native wildlife such as domestic dogs cats. Two small felid species, northern tiger cat jaguarundi co-occur throughout overlapping niches, which require segregation mechanisms avoid interference competition. Assessing species strategies for coexistence crucial, can guide conservation actions. With this aim, a ranch Brazilian drylands was surveyed multi-species occupancy models were used assess co-occurrence patterns between cats jaguarundis. degree temporal overlap both felids also assessed. Evidence found positive jaguarundis, suggesting lack spatial at our study site; low felids, with being nocturnal jaguarundis diurnal. High though wild species. Our results suggest that coexist sufficient habitat. However, there need highlight potential threat disease transmission by carnivores something should be addressed landscapes.

Language: Английский

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Integrating high-resolution remote sensing and empirical wildlife detection data for climate-resilient corridors across tropical elevational gradients

Biological Conservation, Journal Year: 2024, Volume and Issue: 298, P. 110763 - 110763

Published: Aug. 26, 2024

Language: Английский

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Human interference with wildlife surveys: a case study from camera-trapping road underpasses in Costa Rica

Oryx, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 4

Published: Feb. 18, 2025

Abstract Camera traps are widely used to study wildlife. However, theft and vandalism frequent, resulting in millions of dollars financial losses large data gaps research. Here we report on the impacts camera-trap a examining wildlife movement under highway bridges south-west Costa Rica. Even with metal cases, locks signs installed all camera traps, 65% were stolen. The working accumulated total 167 trap-nights detected only two wild mammal species, eight bird species one reptile as well three domestic animal people. This limited number was unexpected given known presence wide-ranging megafauna diverse terrestrial community region. pervasive leads impairs potential for research region, discuss additional reasons detecting small species. Our findings highlight need solutions theft, limit conservation.

Language: Английский

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Increasing Forest Cover and Connectivity Both Inside and Outside of Protected Areas in Southwestern Costa Rica

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(6), P. 1088 - 1088

Published: March 20, 2024

While protected areas (PAs) are an important conservation strategy to protect vulnerable ecosystems and species, recent analyses question their effectiveness in curbing deforestation maintaining landscape connectivity. The spatial arrangement of forests inside outside PAs may affect ecosystem functioning wildlife movement. Osa Peninsula—and Costa Rica general—are unique case studies due high biodiversity, extensive PA network, environmental policies, payment for services (PES) programs. This study explores the relationship between forest management initiatives—specifically PAs, 1996 Forest Law, PES—and cover metrics Conservation Area (ACOSA). Google Earth Engine API was used process Surface Reflectance Tier 1 Landsat 5 Thematic Mapper 8 Operational Land Imager data 1987, 1998, 2019, years with relatively cloud-free satellite imagery. use/land (LULC) maps were generated pixel-based random machine learning algorithm, Normalized Difference Vegetation Index (NDVI), Enhanced (EVI), functional calculated. LULC first track land use change, from 1987 2019 separately classify mature secondary region, have already proven useful efforts. results suggest that cover, NDVI, EVI, structural connectivity increased across area, both within surrounding suggesting minimal encroachment local leakage. These changes contributed increasing vertebrate abundance observed region. especially national parks stricter regulations, displayed highest properties receiving PES payments. Following Law’s ban, conversion reforestation rates decreased, law curbed but did not drive Connectivity slightly declined following adoption law, so subsequent growth likely occurred mostly previously unforested areas. expansion alone does ensure We highlight importance developing programs, monitoring systems emphasize conserving restoring large, connected patches biodiversity resilience. Resumen: Aunque las áreas protegidas (APs) son una importante estrategia de conservación para proteger ecosistemas y especies vulnerables, algunos análisis recientes cuestionan su eficacia frenar la deforestación mantener conectividad del paisaje. La distribución espacial los bosques dentro fuera AP puede afectar el funcionamiento movimientos fauna. Península Osa–y en general–constituyen casos estudio únicos debido a elevada biodiversidad, extensa red AP, sus políticas medioambientales programas Pago por Servicios Ambientales (PSA). Este explora relación entre APs, Ley Forestal 1996, PSA, cobertura métricas paisaje Área Conservación Se utilizó plataforma procesar datos Reflectancia Superficial 1998 años con imágenes satelitales relativamente libres nubes. generaron mapas uso suelo algoritmo aprendizaje automático basado pixeles Random Forest, se calcularon índice vegetación diferencia normalizada mejorado (EVI) funcionales. Estos mapas, primeros clasificar separado maduros secundarios región, han demostrado utilidad esfuerzos conservación. Los resultados sugieren que forestal, EVI estructural aumentaron toda región estudio, tanto como alrededores, lo sugiere expansión mínima AP. cambios pueden haber contribuido al aumento abundancia vertebrados observado región. Las especialmente parques nacionales regulaciones más estrictas, mostraron mayor forestal conectividad. aumentó aquellas propiedades recibieron PSA. Tras prohibición disminuyeron tasas conversión reforestación, ley frenó deforestación, pero no impulsó reforestación. disminuyó ligeramente tras entrada vigor ley, crecimiento posterior produjo zonas antes estaban forestadas. Por tanto, sí sola garantiza Resaltamos importancia desarrollar políticas, PSA sistemas monitoreo hagan hincapié restauración grandes forestales conectadas apuntalar biodiversidad resiliencia

Language: Английский

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Identifying wildlife road crossing mitigation sites using a multi-data approach - A case study from southwestern Costa Rica

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 361, P. 121263 - 121263

Published: May 30, 2024

Language: Английский

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How land use affects freshwater zooplankton communities: a global overview

Hydrobiologia, Journal Year: 2024, Volume and Issue: unknown

Published: June 14, 2024

Language: Английский

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More than one way to count a cat: estimation of ocelot population density using frameworks for marked and unmarked species

Biodiversity and Conservation, Journal Year: 2023, Volume and Issue: 32(6), P. 1821 - 1838

Published: April 7, 2023

Language: Английский

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Predicting the effects of land cover change on biodiversity in Prairie Canada using species distribution models

Biological Conservation, Journal Year: 2024, Volume and Issue: 298, P. 110754 - 110754

Published: Aug. 15, 2024

Language: Английский

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