Lowland tapir (Tapirus terrestris ) distribution, activity patterns and relative abundance in the Greater Madidi-Tambopata Landscape

2012 ◽  
Vol 7 (4) ◽  
pp. 407-419 ◽  
Author(s):  
Robert WALLACE ◽  
Guido AYALA ◽  
Maria VISCARRA
2018 ◽  
Vol 18 (3) ◽  
Author(s):  
André Luis Moura Botelho ◽  
Luiz Henrique Medeiros Borges ◽  
Brian McFarland

Abstract: The implementation of private areas focused on conservation of species and habitats, combined with REDD+ policies, has become an important ally for biodiversity conservation, expanding the conservation areas of the most varied habitats, covering key groups such as large mammals, which are extremely important for the maintenance of ecosystem services. In the upper region of the Purus River in Acre, Brazil, an inventory was carried out using camera-traps, of medium and large mammals community in a private REDD+ area, known as the Purus Project. A total of 19 species of mammals were recorded with an effort of 1859 trap-nigths, including rare, endangered and key species. It is estimated that the richness for the area is of 22 species. Endangered and rare species such as the tapir (Tapirus terrestris) and the short-eared dog (Atelocynus microtis) presented high rates of relative abundance compared to other Conservation Units (UCs). The richness of medium to large-sized mammals recorded in the Purus Project underscores the importance of REDD+ in private areas for the conservation of this group, given the challenges for inclusion and creation of new protected areas. REDD+ projects in privates' areas become an important component for conservation of species and the connection between public conservation units favoring the spread of species and populations between areas, and consequently the gene flow.


2013 ◽  
Vol 13 ◽  
Author(s):  
Breno Hamdan ◽  
Daniela Pinto-Coelho ◽  
Pedro Tourinho Dantas ◽  
Rejâne Maria Lira-da-Silva

Although researches on richness, composition and conservation of Atlantic rainforest’s herpetofauna have focused on large and protected areas, small fragments subject to human interference are important to maintain α-diversity, as they often constitute the only relictual areas with favorable habitats for those species within the cities. In this paper, we report the richness and composition of snakes from a small urbanized area in the Universidade Federal da Bahia (UFBA), in the city of Salvador, state of Bahia, focusing on its conservation. We also propose hypotheses to explain the mechanisms that would facilitate the coexistence of these species, even in the face of an intense fragmentation process. The list of species here presented was based on the registers from the Museu de Zoologia of UFBA and the register book of the “Núcleo Regional de Ofiologia e Animais Peçonhentos da Bahia” (1987–2012). Based on the literature, each taxon was characterized with respect to habitat use, substrate, activity patterns and food habits. Nine species, belonging to the families Boidae (Boa constrictor) and Colubridae (Helicops leopardinus, Liophis almadensis, L. miliaris, L. taeniogaster, Oxyrhopus trigeminus, Philodryas olfersii, Sibynomorphus neuwiedi and Tantilla melanocephala), were registered. A comparative analysis of data from habitat and activity patterns of the species studied suggests that the coexistence of nine taxa in such fragment may be related to different combinations of substrate use and diet. Liophis almadensis (jararaquinha-false) and B. constrictor (python) showed higher relative abundance and were the only species recorded from 2010–2012, suggesting that part of the herpetofauna reported over the last 14 years may be locally extinct. This observation is even more critical because this period coincides with the suppression of almost all remaining fragments of Atlantic forest in the study area for university modernization and expansion.Additional key words: Bahia, conservation, local extinction, snakes, UFBA.


2019 ◽  
Vol 100 (1) ◽  
pp. 192-201 ◽  
Author(s):  
Cathleen M Steinbeiser ◽  
John Kioko ◽  
Amani Maresi ◽  
Rehema Kaitilia ◽  
Christian Kiffner

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
Juliana Laufer ◽  
Fernanda Michalski ◽  
Carlos A. Peres

Standard line-transect census techniques were deployed to generate a checklist and quantify the abundance of medium and large-bodied vertebrate species in forest areas of eastern Amazonia with and without a history of reduced-impact logging (RIL). Three areas were allocated a total of 1,196.9 km of line-transect census effort. Sampling was conducted from April to June 2012 and from April to August 2013, and detected 29 forest vertebrate species considered in this study belonging to 15 orders, 20 families and 28 genera. Additionally, eight species were recorded outside census walks through direct and indirect observations. Of this total, six species are considered vulnerable according to IUCN (Ateles paniscus, Myrmecophaga tridactyla, Priodontes maximus, Tapirus terrestris, Tayassu peccary, Chelonoidis denticulata). Observed species richness ranged from 21 to 24 species in logged and unlogged areas, and encounter rates along transects were highly variable between treatments. However, the relative abundance of species per transect did not differ between transects in logged and unlogged forests. Of the species detected during censuses, only three showed different relative abundance between the two treatments (Saguinus midas, Tinamus spp. and Dasyprocta leporina). Our results show that the effect of RIL forest management was a relatively unimportant determinant of population abundance for most medium and large vertebrates over the time period of the survey.


2014 ◽  
Vol 79 (6) ◽  
pp. 376-383 ◽  
Author(s):  
Paula Cruz ◽  
Agustín Paviolo ◽  
Roberto F. Bó ◽  
Jeffrey J. Thompson ◽  
Mario S. Di Bitetti

2021 ◽  
Vol 2 (3) ◽  
pp. 125-131
Author(s):  
Víctor H. Luja ◽  
Ricardo Rodríguez-Estrella ◽  
Diana J. Guzmán-Báez ◽  
Luis Jiménez

El gato montés, Lynx rufus, es una de las seis especies de felinos silvestres que habitan en México. Se distribuye desde el nivel del mar hasta los 3,600 m, ocupando una gran variedad de hábitats entre los que se encuentran los desiertos, ecosistemas de montaña y humedales.  Sin embargo, a la fecha, no existe información ecológica de la especie en humedales costeros.  El objetivo general de este trabajo es proveer la primera información ecológica obtenida de forma sistemática sobre el gato montés en la Planicie Costera de Nayarit (PCN).  Evaluamos su presencia histórica y actual, su abundancia relativa y patrones de actividad.  Determinamos la presencia histórica del gato montés en la PCN mediante una búsqueda en bases de datos electrónicas utilizando las palabras: “Lynx”, “rufus”, “lince”, “bobcat” y “Nayarit”.  Implementamos el protocolo del Censo Nacional del Jaguar usando cámaras trampa en un área de 72 km2 para documentar la presencia, distribución, abundancia relativa y patrones de actividad del gato montés. A través de la búsqueda en bases de datos encontramos 23 registros de gato montés en un área de al menos 3,000 km2 de la PCN. A partir de nuestro trabajo de campo obtuvimos 30 registros independientes con una abundancia relativa de 1.28 fotografías de gato montés / 100 días cámara.  Documentamos la presencia de al menos 10 individuos diferentes, incluyendo adultos de ambos sexos y una hembra presuntamente embarazada. Su actividad es nocturna; 40 % de los registros ocurrieron entre las 00:00-06:00 hr.  El gato montés habita los ecosistemas costeros de Nayarit.  Los valores elevados de abundancia relativa sugieren una población estable en la PCN con respecto a lo que ha sido reportada en hábitat ideales para la especie tales como los matorrales y bosques templados.  Su actividad nocturna coincide con lo que reportan otros trabajos para la especie.  Aunque, en general, el gato montés se adapta bien al disturbio generado por actividades humanas, los impactos que estas tienen sobre sus poblaciones en los humedales costeros aún se desconocen.  Para asegurar la permanencia de sus poblaciones es necesario realizar futuros estudios sobre su dieta, reproducción, ámbito hogareño y conectividad genética de la especie en los ecosistemas costeros del occidente de México.


FLORESTA ◽  
2011 ◽  
Vol 41 (4) ◽  
Author(s):  
Gisley Paula Vidolin ◽  
Daniela Biondi ◽  
Adilson Wandembruck

Este estudo teve como objetivo conhecer o tamanho e área de uso, abundância relativa e distribuição espacial da anta no Corredor Ecológico Araucária. Para tanto, a pesquisa foi conduzida em 14 propriedades localizadas em um recorte espacial de 659 km2, situado entre as coordenadas geográficas 26°26’35’’ de latitude S, 51°46’10’’ de longitude W e 26°12’19’’ de latitude S, 51°24’45’’ de longitude W. O método de amostragem utilizado consistiu no mapeamento dos pontos de ocorrência da anta, tendo como base entrevista com moradores locais e a busca por indícios, como pegadas, carreiros e outros sinais que atestassem a sua presença nas áreas amostrais. As áreas foram visitadas mensalmente ao longo do período de 18 meses, de janeiro de 2007 a julho de 2008, e todos os pontos (UTM) onde foram encontrados sinais da espécie foram marcados em GPS e, posteriormente, plotados em mapa. Os pontos extremos foram unidos, resultando em um polígono de área de uso dos animais, o qual teve sua área calculada no programa ArcMap versão 9.2. O índice de abundância relativa foi estimado com base em todos os eventos em que a espécie foi visualizada e que os animais puderam ser contabilizados, considerando-se os registros individualizados para cada propriedade. Obteve-se a estimativa de uma média de quatro indivíduos para a região numa área de 4.314 ha ou 43 km2. Essa densidade relativa obtida pode ser considerada baixa. Possivelmente, a caça seja a principal causa do declínio populacional da espécie na região estudada.Palavras-chave: Corredor ecológico; paisagem; ecologia da paisagem. AbstractThe tapir (Tapirus terrestris) in forest fragments with Araucária in Paraná, Brazil. This study aimed to investigate the using area for use of tapir (Tapirus terrestris) along the Araucaria Ecological Corridor in relation to abundance, spatial distribution and area size. The research was carried out on 14 properties located on a spatial section of 659 km2 situated between the coordinates of 26°26’35” latitude S and 51°46’10” longitude W, and 26°12’19” latitude S and 51°24’45” longitude W. The points of occurrence of tapir were mapped based on interviews with local inhabitants and on tracks, paths, and other signs of its presence in the sampling areas. The areas were visited monthly during a period of 18 months. The points (UTM) where signs of the species were found had been marked by GPS and plotted on the map. The index of relative abundance was estimated based on all the events in which the specie was seen. Considering the values of relative abundance index for both groups of tapir studied, it was estimated an average of four individuals for an area of 4.314 ha or 43 km2.The relative density obtained was considered low. It is possible that hunting is the main cause of the population decline of the species in the studied region.Keywords: Ecological corridor; landscape; landscape ecology.


Mammalia ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Romina L. D’Agostino ◽  
Daniel E. Udrizar Sauthier

AbstractThe purpose of this study was to assess the relative abundance and activity patterns of terrestrial carnivorous mammals living in San Pablo de Valdés Wildlife Reserve, which is located in Península Valdés (PV), Chubut province, Argentina. To this end, camera traps were placed in different plant communities of this reserve and they were used from January 2015 to December 2016. A total of 256 independent events, with a sampling effort of 1811 camera nights, were obtained. The following species were identified in order of relative abundance: Conepatus chinga, Lycalopex gymnocercus, Leopardus geoffroyi, Puma concolor, and Leopardus colocolo, and the activity patterns of the first three were estimated. Those of P. concolor and L. colocolo could not be estimated as insufficient independent events were obtained. Our results show a cathemeral activity pattern in C. chinga and L. geoffroyi and a more nocturnal pattern in L. gymnocercus. Our results highlight the need to expand the sampling area to obtain further details on the behavioral patterns and population parameters of the carnivores identified. Knowledge of ecological issues, such as relative abundance and activity patterns of carnivorous mammals, is imperative to formulate monitoring and conservation programs.


Therya ◽  
2016 ◽  
Vol 7 (1) ◽  
pp. 123-134 ◽  
Author(s):  
Miguel Briones-Salas ◽  
Iván Lira-Torres ◽  
Rogelio Carrera-Treviño ◽  
Gerardo Sánchez-Rojas

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3377
Author(s):  
Zhouyuan Li ◽  
Zhuo Tang ◽  
Yanjie Xu ◽  
Yingying Wang ◽  
Zhaogang Duan ◽  
...  

The high-altitude ecosystem of the Tibetan Plateau in China is a biodiversity hotspot that provides unique habitats for endemic and relict species along an altitudinal gradient at the eastern edge. Acquiring biodiversity information in this area, where the average altitude is over 4000 m, has been difficult but has been aided by recent developments in non-invasive technology, including infrared-triggered camera trapping. We used camera trapping to acquire a substantial number of photographic wildlife records in Wolong National Nature Reserve, Sichuan, China, from 2013 to 2016. We collected information of the habitat surrounding the observation sites, resulting in a dataset covering 37 species and 12 environmental factors. We performed a multivariate statistical analysis to discern the dominant environmental factors and cluster the mammals and birds of the ecosystem in order to examine environmental factors contributing to the species’ relative abundance. Species were generalized into three main types, i.e., cold-resistant, phyllophilic, and thermophilic, according to the identified key environmental drivers (i.e., temperature and vegetation) for their abundances. The mammal species with the highest relative abundance were bharal (Pseudois nayaur), Moupin pika (Ochotona thibetana), and Himalayan marmot (Marmota himalayana). The bird species with highest relative abundance were snow partridge (Lerwa lerwa), plain mountain finch (Leucosticte nemoricola), Chinese monal (Lophophorus lhuysii), and alpine accentor (Prunella collaris).


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