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96 resultados encontrados para: AUTOR: Reyna Hurtado, Rafael Ángel
11.
Tesis - Maestría
Estimando densidades del tapir centroamericano (Tapirus bairdii) en la Sierra Madre de Chiapas / Crysia Marina Rivero Hernández
Rivero Hernández, Crysia Marina (0000-00020-8207-4171) ; Reyna Hurtado, Rafael Ángel (director) ; Naranjo Piñera, Eduardo Jorge (asesor) (1963-) ; Tobler, Mathias W. (asesor) ;
Lerma, Campeche, México : El Colegio de la Frontera Sur , 2019
Clasificación: TE/599.727097275 / R5
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006970 (Disponible)
Disponibles para prestamo: 1
Resumen en español

El tapir centroamericano (Tapirus bairdii) es una especie que se encuentra en peligro de extinción en toda su área de distribución. En México, una de las poblaciones más importantes se encuentra en la región de la Sierra Madre de Chiapas (SMC). Sin embargo, se conoce poco acerca de su estado de conservación y las densidades que presenta en dicha región. Actualmente, los estudios realizados con fototrampeo, en combinación con diferentes modelos como captura recaptura y marcaje recaptura espacialmente explícitos (SCR y SMR), así como los modelos de encuentro aleatorio (REM) se han vuelto una herramienta muy popular para estimar densidades de especies que no presentan un patrón de marcaje natural, como es el caso del tapir centroamericano. El objetivo principal del proyecto fue proporcionar una estimación de densidad estadísticamente robusta para el tapir centroamericano en el área natural protegida La Frailescana, situada en la Sierra Madre de Chiapas, por medio de un análisis comparativo para evaluar el comportamiento de tres modelos diferentes (SCR, SMR y REM) para estimar densidades. Además, se identificaron las limitaciones y requerimientos metodológicos de cada uno de estos modelos para su aplicación y se propuso un tamaño poblacional para la Sierra Madre de Chiapas basado en los resultados de densidad obtenidos. La estimación de la densidad fue más alta y menos precisa al usar el REM en comparación con los modelos espacialmente explícitos. El modelo SCR proporcionó la estimación de densidad más baja en comparación con la SMR, pero SMR tuvo los intervalos de confianza más pequeños, lo que representa la estimación de densidad más precisa.

Creamos modelos de ocupación para extrapolar la densidad a las áreas con mayor probabilidad de ocupación del tapir centroamericano para obtener un tamaño poblacional robusto para la SMC. Nuestro estudio es el primero en estimar la densidad de una población de tapir centroamericano bajo diferentes enfoques y nos permitió definir prioridades de conservación enfocados a dichos resultados.


12.
Artículo
*Solicítelo con su bibliotecario/a
Measuring landscape connectivity for baird’s tapir conservation in fragmented areas of Calakmul, Mexico
Carrillo Reyna, Natalia Lucia ; Naranjo Piñera, Eduardo Jorge (coaut.) (1963-) ; Cortina Villar, Héctor Sergio (coaut.) (1960-) ; Reyna Hurtado, Rafael Ángel (coaut.) ; Mendoza Ramírez, Eduardo (coaut.) ;
Contenido en: Tropical Conservation Science Vol. 12 (February 2019), p. 1-15 ISSN: 1940-0829
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Resumen en: Inglés |
Resumen en inglés

Extensive, unprotected tracts of tropical forests remain in community territories of the Calakmul region, in the Yucatan Peninsula of Mexico. These forest tracts face deforestation mainly due to agricultural development. Based on the graphic theory and using the CONEFOR SENSINODE 2.2 program, we analyzed the landscape connectivity between the forests of two communities and Calakmul Biosphere Reserve. Derived from vegetation cover and land use classification, the landscape was characterized considering Baird’s tapir habitat preferences. The indices used showed a loss of connectivity between community territories and Calakmul Biosphere Reserve, making it difficult for tapirs to move outside the continuous forests. We detected a few important nodes for landscape connectivity and a reduced number of connections allowing potential tapir dispersal in each study site. Despite the evident trends of forest fragmentation across the Calakmul region, our results suggest that the landscapes of our study sites are not optimal, but still usable for tapirs, which are able to move throughout habitat mosaics of forests and agricultural areas. We recommend that farming practices should be encouraged over mechanized agriculture to mitigate deforestation and tapir habitat loss in the study area.


13.
Libro
Movement ecology of neotropical forest mammals: focus on social animals / Rafael Reyna-Hurtado, Colin A. Chapman, editors
Disponible en línea: Movement ecology of neotropical forest mammals: focus on social animals.
Reyna Hurtado, Rafael Ángel (editor) ; Chapman, Colin A. (editor) ;
Geneva, Switzerland : Springer Nature Switzerland AG , 2019
Clasificación: EE/599.098 / M6
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006971 (Disponible)
Disponibles para prestamo: 1
Índice | Resumen en: Inglés |
Resumen en inglés

This book brings a unique perspective to animal movement studies because all cases came from tropical environments where the great diversity, either biological and structurally (trees, shrubs, vines, epiphytes), presents the animal with several options to fulfill its live requirements. These conditions have forced the evolution of unique movement patterns and ecological strategies. Movement is an essential process in the life of all organisms. Animals move because they are hungry, thirsty, to avoid being eaten, or because they want to find mates. Understanding the causes and consequences of animal movement is not an easy task for behavioural ecologists. Many animals are shy, move in secretive ways and are very sensible to human presence, therefore, studying the movements of mammals in tropical environments present logistical and methodological challenges that have recently started to be solved by ecologist around the world. In this book we are compiling a set of extraordinary cases where researchers have used some of the modern technology and the strongest methodological approaches to understand movement patterns in wild tropical mammals. We hope this book will inspire and encourage young researchers to investigate wild mammal´s movements in some of the amazing tropical environments of the world.

Índice

1 Why Movement Ecology Matters
2 The Impact of Hurricane Otto on Baird’s Tapir Movement in Nicaragua’s Indio Maíz Biological Reserve
3 White-Lipped Peccary Home-Range Size in the Maya Forest of Guatemala and México
4 White-Lipped Peccary Movement and Range in Agricultural Lands of Central Brazil
5 Movements of White-Lipped Peccary in French Guiana
6 Spatial Ecology of a Large and Endangered Tropical Mammal: The White-Lipped Peccary in Darién, Panama
7 Movements of Neotropical Forest Deer: What Do We Know?
8 Daily Traveled Distances by the White-Tailed Deer in Relation to Seasonality and Reproductive Phenology in a Tropical Lowland of Southeastern Mexico
9 Terrestrial Locomotion and Other Adaptive Behaviors in Howler Monkeys (Alouatta pigra) Living in Forest Fragments
10 Variation in Space Use and Social Cohesion Within and Between Four Groups of Woolly Monkeys (Lagothrix lagotricha poeppigii) in Relation to Fruit Availability and Mating Opportunities at the Tiputini Biodiversity Station, Ecuador
11 Home Range and Daily Traveled Distances of Highland Colombian Woolly Monkeys (Lagothrix lagothricha lugens): Comparing Spatial Data from GPS Collars and Direct Follows
12 Ranging Responses to Fruit and Arthropod Availability by a Tufted Capuchin Group (Sapajus apella) in the Colombian Amazon
13 Insights of the Movements of the Jaguar in the Tropical Forests of Southern Mexico
14 Movements and Home Range of Jaguars (Panthera onca) and Mountain Lions (Puma concolor) in a Tropical Dry Forest of Western Mexico
15 Next Moves: The Future of Neotropical Mammal Movement Ecology
Index


14.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Next moves: the future of neotropical mammal movement ecology
Reyna Hurtado, Rafael Ángel (autor) ; Chapman, Colin A. (autor) ;
Disponible en línea
Contenido en: Movement ecology of neotropical forest mammals: focus on social animals / Rafael Reyna-Hurtado, Colin A. Chapman, editors Switzerland, Suiza : Springer Nature Switzerland AG, 2019 página 263-267 ISBN:978-3-030-03462-7
Bibliotecas: Campeche
Cerrar
SIBE Campeche
10934-20 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

This book compiles a remarkable array of studies dealing with Neotropical mammal movement patterns and therefore presents a unique opportunity to analyze the state of the art of movement ecology of some of the rarest and secretive species that are top predators, important prey to those predators, and/or critical to maintaining the ecosystem services of the forest ecosystems they inhabit. In this last chapter, we attempt to summarize lessons learned from all chapters and advance the field with respect to our understanding of the causes and consequences of animal movements in tropical forests.


15.
Artículo
Pangolins in global camera trap data: implications for ecological monitoring
Khwaja, Hannah (autora) ; Buchan, Claire (autora) ; Wearn, Oliver R. (autor) ; Bahaa el din, Laila (autora) ; Bantlin, Drew (autor) ; Bernard, Henry (autor) ; Bitariho, Robert (autor) ; Van der Weyde, Leanne K. (autora) ; Bohm, Torsten (autor) ; Borah, Jimmy (autor) ; Brodie, Jedediah (autor) ; Chutipong, Wanlop (autor) ; Preez, Byron du (autor) ; Ebang Mbele, Alex (autor) ; Edwards, Sarah (autora) ; Fairet, Emilie (autora) ; Frechette, Jackson L. (autor) ; Garside, Adrian (autor) ; Gibson, Luke (autor) ; Giordano, Anthony (autor) ; Veeraswami Gopi, Govindan (autor) ; Granados, Alys (autora) ; Gubbi, Sanjay (autor) ; Harich, Franziska (autora) ; Haurez, Barbara (autora) ; Havmøller, Rasmus W. (autor) ; Helmy, Olga (autora) ; Isbell, Lynne A. (autora) ; Jenks, Kate (autora) ; Kalle, Riddhika (autora) ; Kamjing, Anucha (autor) ; Khamcha, Daphawan (autora) ; Kiebou Opepa, Cisquet (autor) ; Kinnaird, Margaret (autora) ; Kruger, Caroline (autora) ; Laudisoit, Anne (autora) ; Lynam, Antony (autor) ; Macdonald, Suzanne E. (autora) ; Mathai, John (autor) ; Metsio Sienne, Julia (autora) ; Meier, Amelia (autora) ; Mills, David (autor) ; Mohd Azlan, Jayasilan (autor) ; Nakashima, Yoshihiro (autor) ; Nash, Helen C. (autora) ; Ngoprasert, Dusit (autor) ; Nguyen, An (autora) ; O’Brien, Tim (autor) ; Olson, David (autor) ; Orbell, Christopher (autor) ; Poulsen, John (autor) ; Ramesh, Tharmalingam (autor) ; Reeder, DeeAnn (autora) ; Reyna Hurtado, Rafael Ángel (autor) ; Rich, Lindsey N. (autora) ; Rode Margono, Johanna (autora) ; Rovero, Francesco (autor) ; Sheil, Douglas (autor) ; Shirley, Matthew H. (autor) ; Stratford, Ken (autor) ; Sukumal, Niti (autor) ; Suwanrat, Saranphat (autora) ; Tantipisanuh, Naruemon (autora) ; Tilker, Andrew (autor) ; Van Berkel, Tim (autor) ; Van der Weyde, Leanne K. (autora) ; Varney, Matthew (autor) ; Weise, Florian (autora) ; Wiesel, Ingrid (autora) ; Wilting, Andreas (autora) ; Wong, Seth T. (autor) ; Waterman, Carly (autora) ; Challender, Daniel W. S. (autor) ;
Contenido en: Global Ecology and Conservation Vol. 20, e00769 (2019), p. 1-14 ISSN: 2351-9894
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Resumen en: Inglés |
Resumen en inglés

Despite being heavily exploited, pangolins (Pholidota: Manidae) have been subject tolimited research, resulting in a lack of reliable population estimates and standardised survey methods for the eight extant species. Camera trapping represents a unique opportunity for broad-scale collaborative species monitoring due to its largely nondiscriminatory nature, which creates considerable volumes of data on a relatively widerange of species. This has the potential to shed light on the ecology of rare, cryptic and understudied taxa, with implications for conservation decision-making. We undertook aglobal analysis of available pangolin data from camera trapping studies across their rangein Africa and Asia. Our aims were (1) to assess the utility of existing camera trapping efforts as a method for monitoring pangolin populations, and (2) to gain insights into the distribution and ecology of pangolins. We analysed data collated from 103 camera trap surveys undertaken across 22 countries that fell within the range of seven of the eight pangolin species, which yielded more than half a million trap nights and 888 pangolin encounters. We ran occupancy analyses on three species (Sunda pangolin Manis javanica, white-bellied pangolin Phataginus tricuspisand giant pangolin Smutsia gigantea).

Detection probabilities varied with forest cover and levels of human influence for P. tricuspis, but were low (<0.05) for all species. Occupancy was associated with distance from rivers for M. javanica and S. gigantea, elevation for P. tricuspis and S. gigantea, forest cover forP. tricuspisand protected area status for M. javanica and P. tricuspis. We conclude that camera traps are suitable for the detection of pangolins and large-scale assessment of their distributions. However, the trapping effort required to monitor populations at any given study site using existing methods appears prohibitively high. This may change in the future should anticipated technological and methodological advances in camera trapping facilitate greater sampling efforts and/or higher probabilities of detection. In particular, targeted camera placement for pangolins is likely to make pangolin monitoring more feasible with moderate sampling efforts.


16.
Tesis - Maestría
*En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal
Patrones de actividad y abundancia relativa de especies presa de Panthera onca y Puma concolor en un paisaje modificado en el centro de Belice / Yahaira Liduvina Urbina
Liduvina Urbina, Yahaira ; Cedeño-Vázquez, J.R. (director) ; Ramírez Barajas, Pablo Jesús (asesor) ; Reyna Hurtado, Rafael Ángel (asesor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2019
Clasificación: TE/599.744280972 / L5
Nota: En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal
Resumen en español

Es importante comprender los efectos que las actividades antropogénicas tienen sobre las especies presa de grandes felinos, ya que ellas cumplen funciones vitales en el ecosistema y a menudo son una fuente de proteínas para las personas en las zonas rurales. En este estudio se evaluó el Índice de Abundancia Relativa (IAR) y los patrones de actividad de cinco especies presa de jaguar y puma (Dasypus novemcinctus, Cuniculus paca, Odocoileus virginianus, Dasyprocta punctata y Pecari tajacu) en un paisaje modificado en el centro de Belice; así como los factores que influyen en el comportamiento y el IAR de las especies presa. Se analizaron datos de 29 estaciones de cámaras trampa distribuidas en el valle del Río Belice. Se evaluó la influencia del hábitat y los factores antropogénicos sobre el IAR de las especies presa. Además, se analizaron las diferencias en los patrones de actividad de las especies de presas y estimamos la superposición con la actividad de depredadores, personas y perros domésticos. Los resultados sugieren que el venado cola blanca y el agutí son más abundantes que las otras tres especies en el área de estudio. El venado cola blanca evitó los asentamientos humanos, pero fue asociado con área agrícolas. Su comportamiento catemeral hizo que se traslape en actividad con los depredadores, pero también con los humanos y los perros domésticos. Hubo una gran superposición en la actividad entre el armadillo de nueve bandas y el jaguar; y las cinco especies presa mantuvieron cierto traslape con los perros domésticos, lo que sugiere posibles riesgos de depredación. Este estudio proporciona una comprensión de los factores que afectan la abundancia relativa de especies de presas y la interacción con los depredadores y las personas, pero destaca la necesidad de una evaluación más profunda de la interacción entre los perros domésticos y la fauna silvestre.

Índice

Resumen
Introducción
Artículo: Activity patterns and relative abundance of mammalian prey species of jaguar and puma in a modified landscape in central Belize
Abstract
Methods
Study area
Focal species
Camera trapping
Habitat and anthropogenic factors
Data analysis
Results
Discussion
Literature cited
Tables
Figures
Supplementary information
Conclusiones generales
Literatura citada


17.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Presence of pesticides and toxicity assessment of agricultural soils in the Quintana Roo mayan zone, Mexico using biomarkers in earthworms (Eisenia fetida)
Andrade Herrera, Moisés (autor) ; Escalona Segura, Griselda (autora) ; González Jáuregui, Mauricio (autor) ; Reyna Hurtado, Rafael Ángel (autor) ; Vargas Contreras, Jorge Albino (autor) ; Rendón von Osten, Jaime (autor) ;
Disponible en línea
Contenido en: Water, Air, & Soil Pollution Vol. 230, no. 59 (March 2019), p. 1-13 ISSN: 0049-6979
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Agriculture intensification and the use of pesticides have led to biodiversity loss due to soil toxic compounds. Thus, soil contamination studies are important to understand the negative effects in the physicochemical interactions. The use of biomarkers through bioindicators is a useful tool for assessing toxicity in agricultural environments complemented with the determination of pesticides. The objectives of this study were to determine the presence of organochlorine (OCPs) and organophosphate (OPPs) pesticides and the soil’s potential toxicity in agricultural fields with different crops from the center of Quintana Roo State, using a set of enzymatic biomarkers (BMs), such as acetylcholinesterase (AChE), glutathione-S-Transferase (GST), and catalase (CAT) on earthworms (Eisenia fetida). Earthworms were exposed for 96 h on nine different agricultural soils as well as on a reference soil from a conservation area. Within all samples of soils, only OCPs were detected in low concentrations (ranged from non-detected to 1.40 ppm). However, no correlation was observed between these pesticides and the BMs activity. AChE and CAT activity was significantly inhibited in at least one agricultural soil if compared to the conservation area, while no significant differences of GST were observed. The AChE activity observed suggests the presence of anticholinergic substances (that were neither detected nor determined analytically) in the sampled soils. The characterization of oxidative stress BMs was not correlated with the OCPs analyzed. Our results demonstrate that further studies of toxicity under field conditions are required, given the complexity of environmental conditions outside the laboratory.


18.
- Artículo con arbitraje
Right on track? Performance of satellite telemetry in terrestrial wildlife research
Hofman, Maarten P.G. (autor) ; Hayward, Matt W. (autor) ; Heim, M. (coaut.) ; Marchand, Pascal (autor) ; Rolandsen, Christer Moe (autor) ; Mattisson, Jenny (coaut.) ; Urbano, Ferdinando (autor) ; Heurich, Marco (autor) ; Mysterud, Atle (coaut.) ; Melzheimer, Jörg (autor) ; Morellet, Nicolas (autor) ; Voigt, Ulrich (autor) ; Allen, Benjamin L. (autor) ; Gehr, Benedikt (autor) ; Rouco, Carlos (autor) ; Ullmann, Wiebke (autor) ; Holand, Øystein (autor) ; Jørgensen, Nicolai H. (autor) ; Steinheim, Geir (autor) ; Cagnacci, Francesca (autora) ; Kroeschel, Max (autor) ; Kaczensky, Petra (autora) ; Buuveibaatar, Bayarbaatar (coaut.) ; Payne, John C. (autor) ; Palmegiani, I. (coaut.) ; Jerina, Klemen (autor) ; Kjellander, Petter (autor) ; Johansson, Örjan (coaut.) ; LaPoint, Scott D. (coaut.) ; Bayrakçismith, Rana (autor) ; Linnell, John D. C. (autor) ; Zaccaroni, Marco (autor) ; Jorge, Maria Luisa S. P. (autora) ; Oshima, Júlia Emi Faria (autora) ; Songhurst, Anna C. (autora) ; Fischer, Claude (autor) ; Mc Bride, R. T. (coaut.) ; Thompson, J. J. (coaut.) ; Streif, S. (coaut.) ; Sandfort, Robin (autor) ; Bonenfant, Christophe (autor) ; Drouilly, Marine (autora) ; Klapproth, Matthias (autor) ; Zinner, D. (coaut.) ; Yarnell, R. (coaut.) ; Stronza, A. (coaut.) ; Wilmott, L. (coaut.) ; Meisingset, E. (coaut.) ; Thaker, M. (coaut.) ; Vanak, A. T. (coaut.) ; Nicoloso, S. (coaut.) ; Graeber, R. (coaut.) ; Said, S. (coaut.) ; Boudreau, M. R. (coaut.) ; Devlin, A. (coaut.) ; Hoogesteijn, R. (coaut.) ; May Junior, J.A. (coaut.) ; Nifong, J. C. (coaut.) ; Odden, J. (coaut.) ; Quigley, H. B. (coaut.) ; Tortato, F. (coaut.) ; Parker, D. M. (coaut.) ; Caso, A. (coaut.) ; Perrine, J. (coaut.) ; Tellaeche, C. (coaut.) ; Zieba, F. (coaut.) ; Zwijacz Kozica, T. (coaut.) ; Appel, C. L. (coaut.) ; Axsom, I. (coaut.) ; Bean, W. T. (coaut.) ; Cristescu, B. (coaut.) ; Périquet, S. (coaut.) ; Teichman, K. J. (coaut.) ; Karpanty, S. (coaut.) ; Licoppe, A. (coaut.) ; Menges, V. (coaut.) ; Black, K. (coaut.) ; Scheppers, T. L. (coaut.) ; Schai Braun, S. C. (coaut.) ; Azevedo, F. C. (coaut.) ; Lemos, F. G. (coaut.) ; Payne, A. (coaut.) ; Swanepoel, L. H. (coaut.) ; Weckworth, B. V. (coaut.) ; Berger, A. (coaut.) ; Bertassoni, A. (coaut.) ; McCulloch, G. (coaut.) ; Šustr, P. (coaut.) ; Athreya, V. (coaut.) ; Bockmuhl, D. (coaut.) ; Casaer, J. (coaut.) ; Ekori, A. (coaut.) ; Melovski, D. (coaut.) ; Richard Hansen, C. (coaut.) ; Van De Vyver, D. (coaut.) ; Reyna Hurtado, Rafael Ángel (autor) ; Robardet, E. (coaut.) ; Selva, N. (coaut.) ; Sergiel, A. (coaut.) ; Farhadinia, M. S. (coaut.) ; Sunde, P. (coaut.) ; Portas, R. (coaut.) ; Ambarli, H. (coaut.) ; Berzins, R. (coaut.) ; Kappeler, P. M. (coaut.) ; Mann, G. K. (coaut.) ; Pyritz, L. (coaut.) ; Bissett, C. (coaut.) ; Grant, Tandora (autora) ; Steinmetz, R. (coaut.) ; Swedell, L. (coaut.) ; Welch, R. J. (coaut.) ; Armenteras, D. (coaut.) ; Bidder, O. R. (coaut.) ; González, T. M. (coaut.) ; Rosenblatt, A. (coaut.) ; Kachel, S. (coaut.) ; Balkenhol, Niko (autor) ;
Contenido en: PLoS One Vol. 14, no. 5, e0216223 (May 2019), p. 1-26 ISSN: 19326203
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Resumen en: Inglés |
Resumen en inglés

Satellite telemetry is an increasingly utilized technology in wildlife research, and current devices can track individual animal movements at unprecedented spatial and temporal resolutions. However, as we enter the golden age of satellite telemetry, we need an in-depth understanding of the main technological, species-specific and environmental factors that determine the success and failure of satellite tracking devices across species and habitats. Here, we assess the relative influence of such factors on the ability of satellite telemetry units to provide the expected amount and quality of data by analyzing data from over 3,000 devices deployed on 62 terrestrial species in 167 projects worldwide. We evaluate the success rate in obtaining GPS fixes as well as in transferring these fixes to the user and we evaluate failure rates. Average fix success and data transfer rates were high and were generally better predicted by species and unit characteristics, while environmental characteristics influenced the variability of performance. However, 48% of the unit deployments ended prematurely, half of them due to technical failure. Nonetheless, this study shows that the performance of satellite telemetry applications has shown improvements over time, and based on our findings, we provide further recommendations for both users and manufacturers.


19.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Spatial ecology of a large and endangered tropical mammal: the white-lipped peccary in Darién, Panama
Meyer, Ninon France Victoire (autor) ; Moreno, Ricardo (autor) ; Martínez Morales, Miguel Ángel (autor) (-2020) ; Reyna Hurtado, Rafael Ángel (autor) ;
Disponible en línea
Contenido en: Movement ecology of neotropical forest mammals: focus on social animals / Rafael Reyna-Hurtado, Colin A. Chapman, editors Switzerland, Suiza : Springer Nature Switzerland AG, 2019 páginas 77-93 ISBN:978-3-030-03462-7
Bibliotecas: Campeche
Cerrar
SIBE Campeche
9788-30 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
Resumen en español

Large mammals are negatively affected by habitat loss, fragmentation, and hunting. Thus, many of them are nowadays in urgent need of conservation actions to decrease their risk of extinction. Examining space use of large mammals by integrating empirical data and modeling is a primary prerequisite both for basic ecological understanding and for effective conservation planning. In this study, we investigated the basic spatial ecology of the white-lipped peccary (Tayassu pecari), a keystone ungulate species in the Neotropics. Specifically, we examined the home range and habitat use of the species in the Darién, Panama, which constitutes one of the last remaining strongholds for the species in Mesoamerica. In May and July 2016, we fitted GPS collars on two white-lipped peccaries from different herds and monitored them during 15 months and 1 month. The two herds used an area covered by mature forest and did not venture into disturbed areas during the time we monitored them. Both herds displayed home ranging behavior, and their estimated home range sizes were 58 km2 and 25 km2. The herd that was followed during 15 months showed little difference between seasonal home ranges, suggesting that the forest of Darién provided enough resources throughout the year for the herd to remain in the same area. Based on this study and other research in Panama, we consider that the white-lipped peccary population in Darién is healthy contrasting with many other sites in the country. Management actions need to address both the hunting pressure and the protection of large continuous tracts of undisturbed forests to guarantee the persistence of the species in Panama.


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Resumen en: Español | Inglés |
Resumen en español

El tapir de Baird es el más grande de las especies de tapires Neotropicales y está considerado como en peligro por la UICN. La Reserva de la Biosfera de Calakmul (CBR por sus siglas en ingles) es el área de bosque tropical protegido mas grande de México y se encuentra en el corazón de la Selva Maya, un bosque tri-nacional localizado entre Belice, Guatemala y México considerado el bosque tropical mas extenso de Mesoamérica. El agua de lluvia en la CBR percola al subsuelo y solamente en pocos sitios (localmente conocidos como aguadas) se almacena agua en el suelo. Estos sitios son raros en el paisaje con una densidad de uno cada 10 km2 y una distancia promedio de 3 km entre aguadas. Solamente algunos de esos sitios conserva agua durante la época seca de cada año. Se detectó una reducción de la disponibilidad de agua desde el 2008 al 2018. Documentamos la población de tapires durante estos años y examinamos la relación con este patrón de reducción de la disponibilidad de agua. Usando la técnica de foto-trampeo monitoreamos entre 9 a 15 aguadas en 8 años dentro de este periodo de 11 años. Con un total de mas de 18,000 días-cámaras encontramos que aunque la población de tapires de la CBR permanece estable en promedio el índice de abundancia relativa detectó una ligera disminución en la abundancia y en algunas aguadas se asoció con la falta de agua. Estudios de largo plazo de especies en peligro asociadas a cuerpos de agua son importantes porque permiten estimar los efectos de la disponibilidad de agua y predecir futuros escenarios para las poblaciones de fauna silvestre. Esta información es esencial para elaborar planes de conservación de especies en peligro y sensibles tales como el Tapir de Baird.

Resumen en inglés

Baird’s tapir is the largest Neotropical tapir species, and it is considered Endangered by the IUCN. The Calakmul Biosphere Reserve (CBR) is the largest protected tropical forest in Mexico. The CBR is at the heart of the Maya Forest, a tri-national forest located in Mexico, Guatemala, and Belize that is the largest tropical forest outside the Amazon River basin. Free-standing water in the CBR occurs in only a few ephemeral ponds. These ponds are rare in the landscape, with a mean density of one pond in every 10 km2, and with an average distance among ponds of 3 km. Only some of these ponds have free-standing water in every year. A decreasing trend in water availability from these ponds was detected from 2008 to 2018. Our present objective was to document population of the tapirs during these 11 years, and reveal any relationship to the pattern of water availability. Using the technique of photo-trapping, we monitored from 9 to 15 ponds over a period of 8 years (a total of more than 18,000 camera-days) during the 11-year period. Results showed that although the population remained relatively stable, the index of relative abundance indicated a slight decrease in population abundance and in some sites seemed at least superficially associated with decreasing water availability. Such long-term population studies are becoming more important for estimating the impacts of possible changes and for predicting the future of populations. In turn, they assist the conservation of endangered and sensitive species such as Baird’s tapir.