scholarly journals Diversidad, abundancia relativa y patrones de actividad de mamíferos medianos y grandes en una selva seca del Istmo de Tehuantepec, Oaxaca, México

2014 ◽  
Vol 62 (4) ◽  
pp. 1433 ◽  
Author(s):  
Malinalli Cortés-Marcial ◽  
Miguel Briones-Salas
Keyword(s):  
Deciduous Forest ◽  
Diversity Index ◽  
Abundant Species ◽  
Camera Traps ◽  
Didelphis Virginiana ◽  
Tropical Deciduous Forest ◽  
Line Transect ◽  
Sampling Effort ◽  
Large Mammals ◽  
Isthmus Of Tehuantepec

<p>The use of camera traps and mammal track search are complementary methods to monitoring species of which is not well documented their natural history, as in the case of medium and large mammals. To ensure its conservation and good management, it is necessary to generate information about the structure of the community and their populations. The objective of the present study was to estimate the diversity, relative abundance and activity patterns of medium and large mammals in a tropical deciduous forest located in the Isthmus of Tehuantepec, Oaxaca, Mexico. Samplings were conducted in three month intervals, from September 2011 to May 2013. We used photographic-sampling and track search, two complementary sampling methods. For photographic-sampling, 12 camera traps were placed covering an area of 60km<sup>2</sup>, while for the tracks search a monthly tour of four line-transect surveys of three kilometers length each was undertaken. We obtained a total of 344 pictures with 5 292 trap-days total sampling effort; in addition, 187 track records in a total of 144km. With both methods we registered 21 species of mammals, in 13 families and seven orders, and five species resulted in new records to the area. The diversity index of Shannon-Wiener obtained with the method of tracks was H´=2.41, while the most abundant species were <em>Urocyon cinereoargenteus</em> (IAR=0.23) and <em>Pecari tajacu</em> (IAR=0.20). By the method of trap the most abundant species were <em>P. tajacu</em> (IAR=2.62) and <em>Nasua narica</em> (IAR=1.22). In terms of patterns of activity <em>P. tajacu</em>, <em>N. narica</em> and <em>Odocoileus virginianus</em> were primarily diurnal species; <em>Canis latrans</em> and <em>Leopardus pardalis</em> did not show preference for any schedule in particular, and <em>Didelphis virginiana</em> and <em>Dasypus novemcinctus</em> preferred to have nocturnal activity. This information can be of help to the creation of programs of management and conservation of mammals of medium and large in the Isthmus of Tehuantepec, Oaxaca, México.</p>

scholarly journals Diversidad y patrones de actividad de mamíferos medianos y grandes en la Reserva de la Biosfera La Encrucijada, Chiapas, México

2018 ◽  
Vol 66 (2) ◽  
pp. 634
Author(s):  
Julio C. Hernández Hernández ◽  
Cuauhtémoc Chávez ◽  
Rurik List
Keyword(s):  
Activity Patterns ◽  
Biosphere Reserve ◽  
Abundant Species ◽  
Camera Traps ◽  
Sampling Effort ◽  
Large Mammals ◽  
Dasypus Novemcinctus ◽  
Nasua Narica ◽  
The Pacific ◽  
Dry Seasons

Diversity and activity patterns of medium and large mammals in La Encrucijada Biosphere Reserve, Chiapas, Mexico. In Mexico, wetlands occupy an important portion of the country, among them, mangroves are particularly diverse. La Encrucijada Biosphere Reserve (ENBIRE) is a coastal ecosystem of mangrove located along the Pacific Coastal Plain in the Southwestern portion of Chiapas state. The ENBIRE mangroves are among the most important of the American Pacific Coast, highlighting the role they play in the maintenance of the community of mammals on the coast of the state. There are few studies in Mexico related to the mammals associated with these ecosystems, our aim was to estimate the diversity and activity patterns of medium and large mammals in the ENBIRE. Sampling was conducted from August 2015 to August 2016 using camera traps. We obteined 1 851 independent photographs records, with a total sampling effort of 5 400 trap-days. Nineteen species of mammals were registered belonging to 15 families and seven orders, and five species were new records to the area. Six species present are listed, two as endangered and four as threatened. Interpolation and extrapolation analyzes showed an asymptotic trend in the curves for the rainy and dry seasons. The coverage of the sample for both seasons was 99.9 % and 99.8 %, respectively, indicating that both cases were a representative sample. According to the relative abundance index obtained, the most abundant species were Procyon lotor (IAR = 4.35), Nasua narica (IAR = 3.91), Philander opossum (IAR = 2.04), Cuniculus paca (IAR = 1.89), Didelphis marsupialis (IAR = 1.67) and Dasypus novemcinctus (IAR = 1.02). In terms of patterns of activity C. paca, P. opossum, D. marsupialis and D. novemcinctus were primarily nocturnal; P. lotor showed a tendency towards nocturnal habits but was also recorded during the day; N. narica was mainly diurnal. This information can be useful to the creation of management programs and the conservation of medium and large mammals in the ENBIRE, especially for species at risk. Rev. Biol. Trop. 66(2): 634-646. Epub 2018 June 01. 

scholarly journals MAMÍFEROS DE MÉDIO E GRANDE PORTE NA ÁREA DE PROTEÇÃO AMBIENTAL MUNICIPAL DO RIO VERMELHO EM SANTA CATARINA, SUL DO BRASIL

2021 ◽  
Vol 25 (03) ◽  
pp. 722-737
Author(s):  
Marcelo Hübel ◽  
◽  
Izar Aximoff ◽  
Antonio Carlos de Freitas ◽  
Clarissa Rosa ◽  
...  
Keyword(s):  
Protected Areas ◽  
Atlantic Forest ◽  
Sustainable Use ◽  
Camera Traps ◽  
Lepus Europaeus ◽  
Sampling Effort ◽  
Large Mammals ◽  
Mammal Species ◽  
Santa Catarina ◽  
Santa Catarina State

MEDIUM AND LARGE MAMMALS IN RIO VERMELHO MUNICIPAL ENVIRONMENTAL PROTECTION AREA, SANTA CATARINA, SOUTHERN BRAZIL: Most studies on medium and large mammals in the Brazilian Atlantic Forest are carried out in areas under full protection (as parks and biological reserves). Considering the continuing threats that the forest remnants are suffering, it is essential to carry out mammal surveys in protected areas for sustainable use. In order to evaluate the species richness and the relative frequency of medium and large mammals in the área de proteção ambiental municipal do Rio Vermelho – APARV (northern Santa Catarina state), methodologies of direct visualization and camera traps were used. The study was conducted from the beginning of 2015 to the end of 2019. In Santa Catarina state, there is only one study which sampling effort is comparable to the present one (7300 night-trap). Thirty-three native mammal species and two alien species (Canis familiaris and Lepus europaeus) were found. The species accumulation curve tended to stabilize at the beginning of the third year. Three species were responsible for more than half of the photographic records (Cerdocyon thous, Eira barbara and Procyon cancrivorus). In total, 33.3% of the species are classified in some category of threat, and three of these species are among the less recorded in Santa Catarina state (Tayassu pecari, Tapirus terrestris and Mazama nana). Our survey added 18 new occurrences to the APARV management plan. Only two of the 18 mammal surveys carried out previously in the Santa Catarina state recorded more species than our study. This is the second survey which was carried out in protected areas for sustainable use in Santa Catarina state. Our study contributes to the important knowledge that can be used in conservation measures. In this way, the APARV plays a fundamental role for the conservation of the Atlantic Forest mammals, constituting an important area favoring the population movements of mammals.

scholarly journals Floristic composition in deciduous tropical forest to west of Irapuato, Guanajuato

2019 ◽  
pp. 36-43
Author(s):  
Victoria Hernández-Hernández ◽  
Luis Fernando Ramos-López ◽  
Juan Gualberto Colli-Mull
Keyword(s):  
New Species ◽  
Tropical Forest ◽  
Deciduous Forest ◽  
Conservation Status ◽  
Floristic Composition ◽  
Tropical Deciduous Forest ◽  
Sampling Effort ◽  
Cedrela Odorata ◽  
Three New Species ◽  
Floristic Affinity

The flora of Irapuato has been poorly explored, because it is an area dedicated to agriculture and there are few strains of tropical deciduous forest and subtropical scrubland. The objectives of the study were to know the floristic composition in Cerro del Veinte, compare the richness of species with other locations that have the same type of vegetation and determine the conservation status of the species according to NOM-059 SEMARNAT-2010. The sampling was through free transects of approximately 1 km in the Barrancas La Escondida and El Paiste. A total of 59 families, 137 genera, 171 species and four varieties were obtained. The best represented families are Asteraceae, Fabaceae and Pteridaceae. According to the Chao 2 estimator, the sampling effort in the study area was 87%. Floristic affinity in Cerro del Veinte was greater with the Hoya de Rincón de Parangueo (38%) and Sierra de Pénjamo (32%). In addition, there are three new species reported for Guanajuato, Govenia lagenophora and Sacoila lanceolata (Orchidaceae) and Solanum edmundoi (Solanaceae). The taxa Cedrela odorata and Erythrina coralloides are included in NOM-059-SEMARNAT-2010.

scholarly journals Checklist of medium-sized to large mammals of Campos Gerais National Park, Paraná, Brazil

Check List ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 785-799
Author(s):  
Alan Deivid Pereira ◽  
Sergio Bazilio ◽  
Mário Luís Orsi
Keyword(s):  
National Park ◽  
Research Work ◽  
Camera Traps ◽  
Sampling Effort ◽  
Large Mammals ◽  
Current Analysis ◽  
Mammal Species ◽  
Domestic Species ◽  
Active Research ◽  
Brazilian Atlantic Rainforest

Campos Gerais National Park lies within the Brazilian Atlantic Rainforest, a biodiversity hotspot and a priority for conservation. Current analysis, featuring a list of large and medium-sized mammal species in the park, was conducted between July 2013 and July 2014 and between May 2016 and April 2017. With a 780-hour sampling effort in active research and 157,516 hours in camera traps, 31 species of 17 families and 8 orders were recorded. Furthermore, 42% of recorded mammals in the park proved to be endangered species at state, national, or international levels. Two exotic and 1 domestic species were reported in the park. Results contribute towards an in-depth knowledge of the fauna in south Brazil and may help in further research work and management, complying with conservation proposals in the biodiversity of the Campos Gerais region in the state of Paraná, Brazil.

scholarly journals MAMÍFEROS CARNÍVOROS DEL PARQUE NACIONAL LAGUNAS DE CHACAHUA, OAXACA, MÉXICO: RIQUEZA, ABUNDANCIA Y PATRONES DE ACTIVIDAD

2015 ◽  
Vol 5 (2) ◽  
pp. 39
Author(s):  
Alejandra Buenrostro-Silva ◽  
Daniela Sigüenza Pérez ◽  
Jesús García-Grajales
Keyword(s):  
Activity Patterns ◽  
Camera Traps ◽  
Didelphis Virginiana ◽  
Sampling Effort ◽  
Potential Prey ◽  
Urocyon Cinereoargenteus ◽  
Dasypus Novemcinctus ◽  
Mammal Species ◽  
Nasua Narica ◽  
Reptile Species

RESUMENLos mamíferos carnívoros desempeñan un rol importante en la estructura de las comunidades; sin embargo, los estudios sobre este grupo son complicados debido a sus estilos de vida, por lo que aún existen vacíos de información biológica. En este estudio se utilizaron trampas cámara en cuatro localidades de la costa central de Oaxaca, México. El trabajo se efectuó de septiembre de 2009 a agosto de 2010, con un esfuerzo total de 1012 días/trampa. Se obtuvieron 160 registros fotográficos independientes de ochos especies de mamíferos carnívoros y respecto a las presas potenciales se registraron cinco especies de mamíferos, dos especies de reptiles y dos grupos (aves y ratones). De acuerdo al Índice de Abundancia Relativa obtenido, los carnívoros más abundantes fueron Spilogale pygmaea, Urocyon cinereoargenteus y Nasua narica, mientras que las presas potenciales más abundantes fueron Didelphis virginiana, Dasypus novemcinctus y el grupo de los ratones. El patrón de actividad de las especies registradas mostró que el 73.8% son de hábitos nocturnos. El ganado vacuno de libre pastoreo mostró una abundancia que podría tener impactos en el ambiente natural y el nivel de recursos disponibles para la fauna silvestre de la región.Palabras clave: Cámaras-trampa, Carnívora, Oaxaca, patrón de actividad, Tututepec.ABSTRACTCarnivorous mammals play an important role on the community structure, however information gaps exist on their current situation debt to their nocturnal habits, evasive behavior and low population densities. In this study, we used camera traps to obtain records of mammal carnivores and their potential prey in four localities in the coastal central of Oaxaca, Mexico. The study was conducted from September 2009 to August 2010, with a total sampling effort of 1,012 trap/days. We obtained 160 independent photographs records of eights carnivorous mammal species and regarding potential prey we obtained five mammals species, two reptile species and two groups (birds and mice). According with the two Relative Abundance Index obtained Spilogale pygmaea, Urocyon cinereoargenteus y Nasua narica were the most abundant carnivorous mammals while that Didelphis virginiana, Dasypus novemcinctus and the mice group were the most abundant potential prey. The activity patterns of the species showed that 73.8% of them are nocturnal. The free range cattle showed an abundance that could have impacts in the natural environment and the level of resources available for the wildlife in the region.Key words: Camera-traps, Carnivora, Oaxaca, activity patterns, Tututepec.

scholarly journals Interacciones temporales y espaciales de mesocarnívoros simpátricos en una Reserva de la Biosfera: ¿coexistencia o competencia?

2018 ◽  
Vol 66 (3) ◽  
pp. 996
Author(s):  
Rogelio Carrera-Treviño ◽  
Claudia C. Astudillo-Sánchez ◽  
Héctor A. Garza-Torres ◽  
Luis Martínez-García ◽  
LEROY SORIA-DÍAZ
Keyword(s):  
Deciduous Forest ◽  
Interspecific Interactions ◽  
Cloud Forest ◽  
Sampling Period ◽  
Camera Traps ◽  
Tropical Deciduous Forest ◽  
Oak Forest ◽  
Spatial Overlap ◽  
Temporal And Spatial ◽  
Spatio Temporal

Interspecific interactions among tropical mesocarnivorous species and other mammalian trophic guilds have been poorly studied, despite they have important implications in the survival, structure, demography, and distribution of these species. In this study we analyzed spatio-temporal interactions of three sympatric mesocarnivores that are located in the Northeastern limit of their geographic distribution in Mexico, with the objective of analyzing if these species coexist or compete in the axis of the temporal and spatial niche. With a sampling period from January 2015 to December 2016 and 26 camera-trapping stations (with in a set of two camera traps opposite to each other) and located along roads and animal trails, we determined the activity pattern and habitat use of L. wiedii (margay), L. pardalis (ocelote) y P. yagouaroundi (yaguarundi). All independent photographs of each species were grouped into three temporal categories (day, night and twilight) and six habitat categories; Oak Forest, Oak-Pine Forest, Cloud Forest, Pine-Oak Forest, Tropical Deciduous Forest and Medium Forest. Temporal and spatial overlap between species (i.e interactions) was obtained with the Czekanowski index and the Pianka index, respectively. These indices are symmetrical and take values from zero to one, where the results close to zero indicate that there is no overlap between species and values close to one indicate overlap. We obtained a total of 379 independent photographs, of which 239 corresponded to margay, 118 to ocelot and 22 to yaguarundi. Margay and ocelot were nocturnal, with 75 % of their records in this category showing a high temporal overlap (0.85); whereas yaguarundi was fully diurnal, suggesting it may be able to coexist with the other two species (margay and ocelot). Moreover, the yaguarundi used habitat similar to ocelot and margay (with high spatial overlap of 0.81 and 0.72, respectively), while the spatial overlap between the margay and ocelot was intermediate (0.53), since they used in most cases different habitat types. Our results suggest that there is no interspecific competition among these tropical mesocarnivorous species, probably due to antagonistic interactions among them on the temporal and spatial axis. These strategies may positively favor populations of mesocarnivores, which are characterized by having a high territorial behavior.

scholarly journals Large Mammal Diversity and Endemism at Geremba Mountain Fragment, Southern Ethiopia

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Zerubabel Worku ◽  
Zerihun Girma
Keyword(s):  
Diversity Index ◽  
Abundant Species ◽  
Southern Ethiopia ◽  
Bamboo Forest ◽  
Large Mammals ◽  
Habitat Types ◽  
Mammal Species ◽  
Papio Anubis ◽  
Large Mammal ◽  
Significant Difference

Outside protected areas in Ethiopia, there is a lack of information concerning mammalian diversity and ecology. Consequently, the findings of the research on large mammals at Geremba Mountain constitute one of the steps towards a continuing effort to document the diversity and distribution of Ethiopian mammals. The survey was conducted to investigate the species composition, relative abundance, and population structure of large mammals at Geremba Mountain fragment from August 2017 to February 2018, covering both dry and wet seasons. Direct (sighting) and indirect (scat) survey techniques were employed using systematically established transect lines and sampling plots, respectively. Transects and plots were established across three dominant habitat types (modified dry ever green Afromontane forest, alpine bamboo forest, and Erica scrubland). A total of 10 large mammal species were recorded including two endemic mammals, namely, Chlorocebus djamdjamensis and Tragelaphus scriptus meneliki. There was a statistically significant difference in the abundance of species among habitat types at Geremba Mountain. The highest diversity index was recorded in the alpine bamboo forest habitat (D = 7.142, H′ = 2.052), and the Erica scrubland had the lowest. Papio anubis was the most abundant species while Felis serval was the least abundant species. The populations of most of the species were characterized by more adult and more female individuals. However, promising young individuals of the endemic mammals (C. djamdjamensis and T. s. meneliki) and Papio anubis were recorded. The mountain fragment is an isolated island that is totally disconnected with other fragments in the region, so attempts should be made to connect the fragment with other fragments using wildlife corridors.

scholarly journals Use of road underpasses by terrestrial tetrapods inside a protected area in the southeastern part of the State of São Paulo, Brazil

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Francisco de Assis Alves ◽  
Carlos Roberto Teixeira ◽  
Luciano Barbosa ◽  
Jairo Alves Júnior
Keyword(s):  
Diversity Index ◽  
Pearson Correlation ◽  
Abundant Species ◽  
Camera Traps ◽  
Natural Habitats ◽  
Southeastern Part ◽  
The Road ◽  
Crossing Structures ◽  
Student’S T ◽  
Student’S T Test

Abstract: Roads, despite playing a key role in economy, begin or aggravate processes of forest fragmentation and lead to several species losing their natural habitats, acting as filters and barriers that impose challenges to animal locomotion. Wildlife crossings seek to reestablish the connectivity of the landscape. In general, after being installed, these passages need to be evaluated regarding their functioning. In this study, we present the results of monitoring the underpasses on Serra da Macaca Park Road (SP-139), which crosses Carlos Botelho State Park. The underpasses, constituted by bridges and culverts, were constructed after a license obtained to restore this section of the road. Camera traps were installed inside all crossing structures, and systematic samples were obtained through four field expeditions, with sampling efforts of 10 days each, between March 2018 and February 2019. The footprints found around the intersection structures were also considered. A two-sided Student’s t-test was applied to verify differences in richness between the underpasses that have distinct types of margins. Differences in abundance were analyzed through the non-parametric Mann-Whitney test. A Whittaker diagram was generated according to the order of the species, from the most common to the rarest, while their diversity was estimated through Simpson’s Diversity Index (1 - D). The Pearson correlation coefficient was used to study the interaction between diversity and altitude variation. We observed a richness of 16 species of terrestrial tetrapods, without any statistically significant differences between underpasses with dry or flooded margins. Cuniculus paca was the most abundant species, and higher altitudes presented the most diversity. We concluded that the underpasses located inside Permanent Preservation Areas (PPAs) of watercourses are essential to maintain the flow of animals beneath the road.

scholarly journals Diversity of large and medium mammals in Juchitan, Isthmus of Tehuantepec, Oaxaca, Mexico

2014 ◽  
Vol 37 (1) ◽  
pp. 1-12
Author(s):  
M. Cortés-Marcial ◽  
◽  
Y. M. Martínez Ayón ◽  
M. Briones-Salas ◽  
◽  
...  
Keyword(s):  
Human Activities ◽  
Habitat Degradation ◽  
Alpha Diversity ◽  
Didelphis Virginiana ◽  
Large Mammals ◽  
Urocyon Cinereoargenteus ◽  
Mammal Species ◽  
Neotropical Species ◽  
Livestock Density ◽  
Isthmus Of Tehuantepec

The Isthmus of Tehuantepec in Oaxaca, Mexico, is one of the country’s most important regions from a zoogeographical perspective due to the large number of endemic Neotropical species found there. Between September 2007 and August 2008, we sampled medium–sized and large mammals in the Juchitan municipality and compared their diversity in two areas with distinct levels of anthropogenic impact, defined according to estimates of human activities, livestock density and habitat degradation, We obtained 167 records of 18 species, with a 79% representation according to species accumulation models in both areas. The highest species richness and alpha diversity were recorded in the preserved area, whereas the disturbed area exhibited half the diversity found in the preserved area. A high interchange of species was also observed between zones. The two species with the largest number of records were Urocyon cinereoargenteus (n = 52) and Didelphis virginiana (n = 42). In both areas, the highest relative abundance occurred during the rainy season. Habitat degradation and human activities seem to affect the diversity of mammal species in the region.

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