Effect of landscape attributes on the occurrence of the endangered golden‐headed lion tamarin in southern Bahia, Brazil DOI
Joanison Vicente dos Santos Teixeira, Fernando César Gonçalves Bonfim, Maurício Humberto Vancine

et al.

American Journal of Primatology, Journal Year: 2023, Volume and Issue: 86(4)

Published: Dec. 25, 2023

Abstract The golden‐headed lion tamarin ( Leontopithecus chrysomelas ) is an endangered primate that occurs exclusively in the Atlantic Forest of southern Bahia, Brazil. Its geographic range has been severely reduced by deforestation and its populations are restricted to a human‐modified landscape consisting primarily forest fragments shade cacao Theobroma agroforestry, locally known as cabrucas . In last 30 years, there 42% reduction 60% population size L. , with only 8% habitat represented protected areas. Thus, we investigated occurrence based on interviews using playback census, evaluated influence attributes occurrence. was measured Generalized Linear Model set 12 predictor variables, including fragment elevation. inhabited 186 (38%) 495 Most patches n = 169, 91%) eastern portion (ca. 70 km wide region from coast inland) range. remaining 17, 9%) western distribution, between 150 coast. Our models indicate higher range, where exhibits lower land cover diversity, greater functional connectivity, altitudes (<400 m), composed core percentage. contrast, observed portion, more diverse heterogeneous due anthropogenic activities, such agriculture livestock. We urge establishment ecological corridors via reforestation degraded areas This increase availability suitability west together protection forests east would our chances saving extinction.

Language: Английский

Population Responses to Patchy Environments DOI

John A. Wiens

Annual Review of Ecology and Systematics, Journal Year: 1976, Volume and Issue: 7(1), P. 81 - 120

Published: Nov. 1, 1976

Species distribution models (SDMs) are numerical tools that combine observations of species occurrence or abundance with environmental estimates. They used to gain ecological and evolutionary insights predict distributions across landscapes, ...Read More

Language: Английский

Citations

1066
Effects of fragmentation on grassland plant diversity depend on the habitat specialization of species DOI
Yongzhi Yan, Scott Jarvie, Qingfu Liu

et al.

Biological Conservation, Journal Year: 2022, Volume and Issue: 275, P. 109773 - 109773

Published: Oct. 18, 2022

Language: Английский

Citations

71
Tropical forest loss impoverishes arboreal mammal assemblages by increasing tree canopy openness DOI Creative Commons
Sabine Cudney‐Valenzuela, Víctor Arroyo‐Rodríguez, José Carlos Morante‐Filho

et al.

Ecological Applications, Journal Year: 2022, Volume and Issue: 33(1)

Published: Sept. 15, 2022

Abstract Landscape‐scale deforestation poses a major threat to global biodiversity, not only because it limits habitat availability, but also can drive the degradation of remaining habitat. However, multiple pathways by which directly and indirectly affects wildlife remain poorly understood, especially for elusive forest‐dependent species such as arboreal mammals. Using structural equation models, we assessed direct indirect effects landscape forest loss on mammal assemblages in Lacandona rainforest, Mexico. We placed camera traps 100 canopy trees, effect cover their via changes tree basal area openness abundance diversity (i.e., richness exponential Shannon entropy) found that had negative through increase openness. This could be related fact is usually inversely resource availability connectivity Furthermore, independently loss, mammals was positively area, typically higher old‐growth forests. Thus, our findings suggest generally prefer vegetation with relatively low high area. unexpectedly, mammals, probably due crowding effect, reasonable possibility given short history (~40 years) study region. Conversely, affected predictors evaluated, suggesting rare (not common species) are ones most these changes. All all, emphasize conservation measures ought focus increasing landscape, preventing large trees patches.

Language: Английский

Citations

21
Detecting Spatiotemporal Dynamics and Driving Patterns in Forest Fragmentation with a Forest Fragmentation Comprehensive Index (FFCI): Taking an Area with Active Forest Cover Change as a Case Study DOI Open Access
Shiyong Zhen,

Qing Zhao,

Shuang Liu

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(6), P. 1135 - 1135

Published: May 31, 2023

Forests play an irreplaceable role in preserving soil and water, as well realizing carbon neutrality. However, logging urban expansion have caused widespread forest fragmentation globally, resulting biodiversity loss emissions. Therefore, it is a prerequisite to develop comprehensive index for evaluating the degree of propose effective policies protection restoration. In this study, (FFCI) was constructed through principal component analysis (PCA) based on land-use data from 2000 2020 Fujian Province, composed five commonly used landscape metrics: patch density (PD), largest (LPI), mean area (MPA), aggregation (AI), division. Then, semivariogram function moving windows method were employed explore scale effect spatiotemporal variations FFCI. The spatial autocorrelation distinguish relationship fragmentation, while driving mechanisms explored using geographic detector (GD). results show that optimal reflect window 3500 m. proposed FFCI could explain more than 85% information all metrics, effectivity validated by urban–rural gradient transect analysis. We also found that, despite having highest coverage China, Province has experienced severe fragmentation. High medium accounted over 50% types with decreasing trends low very increasing high time, indicating study aggravated time. Moreover, distribution pattern mainly high–high clusters low–low clusters, showing trend year year. areas distributed center coastal cities, internal cities western central regions had relatively Additionally, differentiation variation influenced elevation, slope, nighttime light intensity. superimposed impact two factors greater individual factors. These provide approach assessing offer scientific support mitigating

Language: Английский

Citations

11
Effects of habitat loss on Brazilian primates: assessing extinction thresholds in the Amazon and Atlantic Forest DOI Creative Commons
Carmen Galán‐Acedo, Ricard Arasa‐Gisbert, Víctor Arroyo‐Rodríguez

et al.

Perspectives in Ecology and Conservation, Journal Year: 2023, Volume and Issue: 21(2), P. 189 - 195

Published: April 1, 2023

Habitat loss has major impacts on biodiversity. Yet, such are not always linear, as there can be threshold values of habitat amount below which species become extirpated from human-modified landscapes (extinction thresholds). This may particularly the case for with high spatial requirements, especially in regions a long land-use history, have lower extinction debt. To address these issues, we evaluated linear and non-linear effects landscape-scale forest (habitat) primate richness relatively new (Amazon) old (Atlantic Forest) histories change. We also role mean home range size regulating responses to loss. Extinction thresholds were higher Atlantic Forest (78% remaining cover) than Amazon (45%), but primate-landscape associations stronger Amazon. Thus, despite its recent primates more sensitive As predicted, decreased both biomes. Our findings highlight importance stopping deforestation biomes maintain above thresholds. <30% cover remains today, promoting restoration initiatives across this biome is paramount.

Language: Английский

Citations

11
Impact of forest fragmentation and associated edge effects on the population density of four nocturnal lemur species in North West Madagascar DOI Creative Commons
Daniel Hending,

H. Randrianarison,

Niaina Nirina Mahefa Andriamavosoloarisoa

et al.

Animal Conservation, Journal Year: 2024, Volume and Issue: 27(4), P. 522 - 537

Published: Jan. 20, 2024

Abstract The clearing and fragmentation of tropical forests is the single biggest threat to primate populations who depend on this habitat for survival. In contrast primates that live in continuous, undisturbed forests, communities fragmented need adapt decreased food availability increased inter‐ intraspecific competition typical these degraded anthropogenically disturbed habitats. Some species are highly sensitive fragmentation, whilst other can even thrive forests. Here, we assessed how forest associated edge effects impact population density four nocturnal lemur Sahamalaza‐Iles Radama National Park, North West Madagascar. We conducted 118 transect walks over a 3‐year period covering total distance 107 km collect encounter rate ( N /km) /Ha) data each species, which then compared between core areas continuous forest. Our results were species‐specific, with densities two Lepilemur sahamalaza Microcebus sambiranensis ) increasing habitat, observed opposite Cheirogaleus medius . Mirza zaza appeared consistent both areas. also found evidence species‐specific relationships fragment size, area shape; however, further work needed support findings. This study demonstrates some lemurs habitats within less capable doing so.

Language: Английский

Citations

4
Effect of forest loss and fragmentation per se on arboreal and ground mammals of the Lacandon rainforest, Mexico DOI Creative Commons
Marisela Martínez‐Ruiz, Víctor Arroyo‐Rodríguez, Miriam San‐José

et al.

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

Published: Jan. 27, 2025

Language: Английский

Citations

0
A possible role of NDVI time series from Landsat Mission to characterize lemurs habitats degradation in Madagascar DOI
Federica Ghilardi, Samuele De Petris, Valeria Torti

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 974, P. 179243 - 179243

Published: March 30, 2025

Language: Английский

Citations

0
Insights into forest vegetation changes and landscape fragmentation in Southeastern China: From a perspective of spatial coupling and machine learning DOI Creative Commons
Yuying Lin,

Yidong Jin,

Ge Yang

et al.

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112479 - 112479

Published: Aug. 10, 2024

Language: Английский

Citations

3
Habitat fragmentation reduced plant functional diversity in the agro-pastoral ecotone of Inner Mongolia DOI Creative Commons

Jiawei Yu,

Yongzhi Yan, Guowei Wang

et al.

Ecological Indicators, Journal Year: 2024, Volume and Issue: 169, P. 112975 - 112975

Published: Dec. 1, 2024

Language: Английский

Citations

3