Linking changes in landscape structure to population changes of an endangered primate

Arce-Peña, Norma P.; Arroyo‐Rodríguez, Víctor; Dias, Pedro Américo D.; Franch-Pardo, Iván

doi:10.1007/s10980-019-00914-8

Cited by 17 publications

(18 citation statements)

References 63 publications

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“…This study represents the first temporal analysis of the spatial drivers of population demography in the Mexican howler monkey. In fact, we are only aware of two other studies that have conducted a similar analysis in primates (Sales et al ., 2015; Arce‐Peña et al ., 2019). With such a longitudinal approach, we were able to improve our understanding of the impact that forest patch dynamics have on this critically endangered subspecies.…”

Section: Discussionmentioning

confidence: 99%

“…With such a longitudinal approach, we were able to improve our understanding of the impact that forest patch dynamics have on this critically endangered subspecies. Interestingly, we recorded the rapid recovery of this subspecies following positive habitat changes in the landscape over a relatively short period of 12 years – a finding consistent with a previous assessment of a sister species, the black howler monkey, in the Lacandona rainforest, Mexico (Arce‐Peña et al ., 2019). In particular, between 2001 and 2013, we observed a significant increase in patch size and shape complexity, and a significant decrease in patch isolation.…”

Section: Discussionmentioning

confidence: 99%

“…Our findings are consistent with previous studies suggesting that howler monkeys are able to adapt to altered landscapes (Bicca‐Marques, 2003; Arroyo‐Rodríguez & Dias, 2010; Arce‐Peña et al ., 2019), largely because of their high dietary plasticity (Dunn et al ., 2010; Cristóbal‐Azkarate & Dunn, 2013; Dias & Rangel‐Negrín, 2015). As stated above, their use of secondary vegetation as temporary or permanent habitat can also explain their ability to persist and increase their abundance in this fragmented landscape.…”

Section: Discussionmentioning

confidence: 99%

“…In the second, Arce‐Peña et al . (2019) related changes in landscape structure occurring over a 6‐year period to population trends of black howler monkeys Alouatta pigra . They found that monkey abundance increased significantly in forest sites located in landscapes where forest cover and the number of forest patches increased over time.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, we predicted that past attributes would better predict current population demography than current patch attributes (e.g. Krauss et al ., 2010; but see Arce‐Peña et al ., 2019). We also assessed whether and how changes in patch metrics between 2001 and 2013 promoted changes in each demographic attribute between years.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating extinction debt in fragmented forests: the rapid recovery of a critically endangered primate

Alcocer‐Rodríguez

Arroyo‐Rodríguez

Galán‐Acedo

et al. 2020

Animal Conservation

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Fragmented tropical forests can be highly dynamic, with the spatial configuration of forest patches changing through time. Yet, the lack of longitudinal studies limits our understanding of how patch dynamics affect biodiversity, especially when there is a time lag in species extinctions (extinction debt). We assessed how temporal changes in patch size, shape complexity and isolation affect populations of the Mexican howler monkey (Alouatta palliata mexicana), hypothesizing that we would find an extinction debt in this relatively long‐lived species. We assessed patch occupancy, subpopulation size and immature‐to‐female ratio in 39 forest patches from Los Tuxtlas, Mexico, in both 2001 and 2013. To identify time‐lag responses to habitat disturbance, we related demographic attributes in 2013 to patch metrics in 2001 and 2013 and tested whether primate subpopulations were better predicted by current or historical patch characteristics. We also assessed how changes in patch metrics affected each demographic attribute between 2001 and 2013. Patch size and shape complexity increased over time, whereas isolation decreased. These positive spatial changes were accompanied by a 1.6‐fold increase in mean subpopulation size over the same period. In addition, occupancy and immature‐to‐female ratio were similarly related to patch attributes in both years, suggesting that there is no extinction debt. Our findings are ‘good news’, suggesting that forest recovery over a relatively short period can promote the recovery of this Critically Endangered taxon. They also highlight the importance of preventing forest loss and promoting forest regeneration in human‐modified tropical landscapes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluating extinction debt in fragmented forests: the rapid recovery of a critically endangered primate

Alcocer‐Rodríguez

Arroyo‐Rodríguez

Galán‐Acedo

et al. 2020

Animal Conservation

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Influence of landscape structure on previous exposure to Leptospira spp. and Brucella abortus in free‐living neotropical primates from southern Brazil

Santos

Klain

Bustamante-Manrique

et al. 2023

American J Primatol

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The environments in which neotropical primates live have been undergoing an intense fragmentation process, constituting a major threat to the species' survival and causing resource scarcity, social isolation, and difficulty in dispersal, leaving populations increasingly vulnerable. Moreover, the proximity of wild environments to anthropized landscapes can change the dynamics of pathogens and the parasitehost-environment relationship, creating conditions that favor exposure to different pathogens. To investigate the previous exposure of free-living primates in Rio Grande do Sul State (RS), southern Brazil, to the bacterial agents Leptospira spp. and Brucella abortus, we investigated agglutinating antibodies against 23 serovars of Leptospira spp. using the microscopic agglutination test and B. abortus acidified antigen test in primate serum samples; 101 samples from primates captured between 2002 and 2016 in different forest fragments were used: 63 Alouatta caraya, 36 Alouatta guariba clamitans, and 02 Sapajus nigritus cucullatus. In addition, the forest remnants where the primates were sampled were characterized in a multiscale approach in radii ranging from 200 to 1400 m to investigate the potential

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Pairing a user‐friendly machine‐learning animal sound detector with passive acoustic surveys for occupancy modeling of an endangered primate

Wood

Cruz

Kahl

2023

American J Primatol

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Population declines and range contractions due to habitat loss are pervasive among nonhuman primates, with 60% of species threatened with extinction.However, the extensive vocal activity displayed by many primates makes them excellent candidates for passive acoustic surveys. Passive acoustic survey data is increasingly being used to support occupancy models, which have proven to be an efficient means of estimating both population trends and distributions.Passive acoustic surveys can be conducted relatively quickly and at broad scales, but efficient audio data processing has long proven elusive. The machine learning algorithm BirdNET was originally developed for birds but was recently expanded to include nonavian taxa. We demonstrate that BirdNET can accurately and efficiently identify an endangered primate, the Yucatán black howler monkey (Alouatta pigra), by sound in passive acoustic survey data (collected in southeastern Chiapas, Mexico), enabling us to use a single-season occupancy model to inform further survey efforts. Importantly, we also generated data on up to 286 co-occurring bird species, demonstrating the value of integrated animal sound classification tools for biodiversity surveys.BirdNET is freely available, requires no computer science expertise to use, and can readily be expanded to include more species (e.g., its species list recently tripled to >3000), suggesting that passive acoustic surveys, and thus occupancy modeling, for primate conservation could rapidly become much more accessible.Importantly, the long history of bioacoustics in primate research has yielded a wealth of information about their vocal behavior, which can facilitate appropriate survey design and data interpretation.

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Linking changes in landscape structure to population changes of an endangered primate

Cited by 17 publications

References 63 publications

Evaluating extinction debt in fragmented forests: the rapid recovery of a critically endangered primate

Evaluating extinction debt in fragmented forests: the rapid recovery of a critically endangered primate

Influence of landscape structure on previous exposure to Leptospira spp. and Brucella abortus in free‐living neotropical primates from southern Brazil

Pairing a user‐friendly machine‐learning animal sound detector with passive acoustic surveys for occupancy modeling of an endangered primate

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