scholarly journals Andean bear (Tremarctos ornatus) population density and relative abundance at the buffer zone of the Chingaza National Natural Park, cordillera oriental of the colombian andes

2020 ◽  
Vol 60 ◽  
pp. e20206030
Author(s):  
Daniel Rodríguez ◽  
Adriana Reyes ◽  
Andres Quiñones-Guerrero ◽  
Fidel Ernesto Poveda-Gómez ◽  
Yeimy Castillo-Navarro ◽  
...  
Keyword(s):  
Population Density ◽  
Habitat Quality ◽  
Relative Abundance ◽  
Individual Recognition ◽  
Buffer Zone ◽  
Camera Traps ◽  
Sampling Effort ◽  
Colombian Andes ◽  
Natural Park ◽  
Conservation Actions

The Andean bear (Tremarctos ornatus) population density and relative abundance within the Chingaza Massif were assessed between September 2015 and May 2016. One hundred seventeen (117) camera traps were installed at 9 grids: 13 cameras per grid, each camera separated 750 m from the other; the sampling effort was 17,057 days-trap. Two thousand seven hundred eighty-four (2,784) native fauna records were obtained, 1,456 corresponding to mammals, 183 records for Andean bear specimens, 158 of them independent bear records (at least one hour between records), and 106 effective-independent bear records (also permitting individual recognition). Fifty-seven (57) Andean bear individuals were identified according to key external morphological features. Sixteen (16) adults were recaptured (12 males and 4 females), with a maximum mean distance of 27.22 km. Bears population density was 2.9 bears per 100 km². Based on this density and the buffer area of the sampling grids, we estimated an overall number of 122 bears in 4,215.15 km². The estimated density is the first for the species in Colombia and the lowest regarding previous reports from other countries. Thus, it is necessary to better understand how integral habitat quality and the anthropic impacts on habitat quality, availability, and connectivity may affect the Andean bear population densities in Colombia, as a useful tool for assessing populations` state and focus future conservation actions.

Relative abundance and activity patterns of terrestrial carnivorous mammals in Península Valdés, Patagonia, Argentina

Mammalia ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Romina L. D’Agostino ◽  
Daniel E. Udrizar Sauthier
Keyword(s):  
Plant Communities ◽  
Relative Abundance ◽  
Puma Concolor ◽  
Activity Patterns ◽  
Camera Traps ◽  
Sampling Effort ◽  
Population Parameters ◽  
Sampling Area ◽  
Independent Events ◽  
Wildlife Reserve

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.

scholarly journals Abundancia relativa, estructura poblacional, preferencia de hábitat y patrones de actividad del Tapir Centroamericano Tapirus bairdii (Perissodactyla: Tapiridae), en la Selva de Los Chimalapas, Oaxaca, México

2014 ◽  
Vol 62 (4) ◽  
pp. 1407 ◽  
Author(s):  
Iván Lira-Torres ◽  
Miguel Briones-Salas ◽  
Gerardo Sánchez-Rojas
Keyword(s):  
Population Structure ◽  
Relative Abundance ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Activity Patterns ◽  
Habitat Preferences ◽  
Camera Traps ◽  
Quintana Roo ◽  
Invasive Technique ◽  
Sampling Effort

Baird’s tapir (<em>Tapirus bairdii</em>) is endangered primarily because of habitat loss and fragmentation, and overhunting throughout its distribution range. One of the priority land areas for the conservation of this species is the Northern part of its range in the Chimalapas forest, Oaxaca. The aim of this research was to determine the relative abundance, population structure, habitat preferences and activity patterns of Baird´s tapir (<em>Tapirus bairdii</em>) in the Chimalapas forest, Oaxaca, Mexico, through the non-invasive technique of camera-trap sampling. A total of five sampling sessions were undertaken among 2009-2013, and used a total of 30 camera-traps in each period. The determinant factor of the sampling design was the hunting between two study areas. A total sampling effort of 9 000 trap-days allowed to estimate an index of relative abundance (IRA) of 6.77 tapir photographs/1 000 trap-days (n=61). IRA varied significantly between sampling stations (Mann-Whitney, p&lt;0.01). The frequency of Baird´s tapir photos was higher in the dry season in tropical rain forest without hunting (<em>x</em>², p&lt;0.5). In the rainy season, the tropical rain forest and secondary vegetation habitats showed higher photo frequency than expected from random (<em>x</em>², p&lt;0.5). Considering population structure, a 95.08% of adult animals was obtained in photographic records (n=58). Three types of activity pattern were observed, with more nocturnal records (88.33%; Kruskal-Wallis, p&lt;0.05). The Chimalapas forest appears to be the second most important terrestrial priority ecoregion, just after the Mayan Forest (Campeche, Chiapas, Quintana Roo), for the conservation of tapir populations, not only for Mexico but also for Central America.

Odonata from protected areas in Colombia with new records and description of Cora verapax sp. nov. (Zygoptera: Polythoridae)

Zootaxa ◽  
2018 ◽  
Vol 4462 (1) ◽  
pp. 115 ◽  
Author(s):  
CORNELIO ANDRÉS BOTA-SIERRA ◽  
MELISSA SÁNCHEZ-HERRERA ◽  
FREDY PALACINO-RODRÍGUEZ
Keyword(s):  
Protected Areas ◽  
Rare Species ◽  
New Records ◽  
Neotropical Region ◽  
Red List ◽  
Sampling Effort ◽  
Natural Park ◽  
Management Plans ◽  
Conservation Actions ◽  
First Time

Colombia is one of the megadiverse countries in the world, but paradoxically it is one of the less explored. The recent red list assessments show the country has the highest number of endangered species in the Neotropical region. Nevertheless, the sampling effort is low especially in protected areas, which probably can harbor some of the rare species included in the red list. As a result of recent surveys in six protected areas of Colombia, we report twelve new records and describe Cora verapax sp. nov., a rare species, collected after more than 300 days of field surveys at the National Natural Park Tatamá. In addition, we compiled and mapped published Odonata records from 2001 until now for Colombian protected areas (136 spp.). Among the new records, some species were formerly known as endemics from Panama and Ecuador, and five species are reported for the first time inside protected areas, showing the importance of surveys in these special territories and bringing new data for conservation actions, as red list assessment or future management plans. 

scholarly journals Mamíferos medianos y grandes asociados al bosque tropical seco del centro de México

2018 ◽  
Vol 66 (3) ◽  
pp. 1232
Author(s):  
Luz Adriana Pérez-Solano ◽  
Matilde González ◽  
Eva López-Tello ◽  
Salvador Mandujano
Keyword(s):  
Relative Abundance ◽  
Large Population ◽  
Tropical Dry Forest ◽  
Camera Traps ◽  
Dry Forest ◽  
Sampling Effort ◽  
Anthropogenic Pressure ◽  
Large Mammals ◽  
True Diversity ◽  
Set Up

The tropical dry forest is one of the most endangered ecosystems in the world, mainly due to deforestation and fragmentation. In Mexico more than half of its surface has disappeared, affecting biodiversity. The objective of this study was to compare the richness, diversity, and relative abundance of medium and large mammals in two sites with different management and conservation status, and where tropical dry forest is present. We also sought to find out which variables of habitat and human influence are related to the presence of the most common species. The study sites were in Pastorias, Actopan, Veracruz and San Juan Bautista Cuicatlan, Oaxaca, Mexico. The first site is highly transformed by anthropogenic activities, while the second is within the protected natural area of the Tehuacan-Cuicatlan Biosphere Reserve (TCBR). In Pastorias 11 camera-traps were set up from september 2015 to september 2016; while in Cuicatlan 10 camera traps were set up from october 2013 to july 2014. The sampling effort was 3526 days/trap which yielded 443 independent records for the first site, and 2690 days/trap that yielded 378 independent records for the second site. In each locality 13 species of mammals were recorded. In particular, three of these species are endangered (Tamandua mexicana, Leopardus wiedii, and Lynx rufus) and two are under threat (Herpailurus yagouaroundi and Galictis vittata). The true diversity of medium and large mammals between communities was different. According to the relative abundance index (RAI) the most abundant species are Odocoileus virginianus, Urocyon cinereoargenteus and Canis latrans. Regression analyses suggest that the variables of season, the cover of secondary vegetation and distance to the nearest human locality are related to the record of these species. Despite the anthropogenic pressure in Pastorias, tropical dry forest remnants still maintain high species richness, which is very similar to that of a site as preserved as Cuicatlan. However, the low RAIs value of several mammals may indicate that habitat quality could not maintain large population numbers. Therefore, it is necessary to develop programs to conserve this ecosystem.

scholarly journals The wildcat Felis silvestris in northern Turkey: assessment of status using camera trapping

Oryx ◽  
2011 ◽  
Vol 45 (1) ◽  
pp. 112-118 ◽  
Author(s):  
Özgün Emre Can ◽  
İrfan Kandemi̇r ◽  
İnci̇ Togan
Keyword(s):  
Population Size ◽  
Camera Traps ◽  
Sampling Effort ◽  
Felis Silvestris ◽  
Forest Patch ◽  
Western Turkey ◽  
Lack Of Information ◽  
The Status ◽  
Capture Recapture ◽  
Estimate Population Size

AbstractThe wildcat Felis silvestris is a protected species in Turkey but the lack of information on its status is an obstacle to conservation initiatives. To assess the status of the species we interviewed local forestry and wildlife personnel and conducted field surveys in selected sites in northern, eastern and western Turkey during 2000–2007. In January–May 2006 we surveyed for the wildcat using 16 passive infrared-trigged camera traps in Yaylacı k Research Forest, a 50-km2 forest patch in Yenice Forest in northern Turkey. A total sampling effort of 1,200 camera trap days over 40 km2 yielded photo-captures of eight individual wildcats over five sampling occasions. Using the software MARK to estimate population size the closed capture–recapture model M0, which assumes a constant capture probability among all occasions and individuals, best fitted the capture history data. The wildcat population size in Yaylacı k Research Forest was estimated to be 11 (confidence interval 9–23). Yenice Forest is probably one of the most important areas for the long-term conservation of the wildcat as it is the largest intact forest habitat in Turkey with little human presence, and without human settlements, and with a high diversity of prey species. However, it has been a major logging area and is not protected. The future of Yenice Forest and its wildcat population could be secured by granting this region a protection status and enforcing environmental legislation.

scholarly journals Abundance and composition of the medium to large-sized mammals in a private area of a REDD+ project in Acre, Brazil

2018 ◽  
Vol 18 (3) ◽  
Author(s):  
André Luis Moura Botelho ◽  
Luiz Henrique Medeiros Borges ◽  
Brian McFarland
Keyword(s):  
Gene Flow ◽  
Ecosystem Services ◽  
Relative Abundance ◽  
Rare Species ◽  
Camera Traps ◽  
Large Mammals ◽  
Conservation Areas ◽  
Conservation Units ◽  
Key Species ◽  
Tapirus Terrestris

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.

scholarly journals Ecosystems of protected area of the Natural Park “Medeu”

2021 ◽  
Vol 20 (1) ◽  
pp. 169-173
Author(s):  
L. A. Dimeyeva ◽  
V. N. Permitina ◽  
R. E. Sadvokasov ◽  
B. Sh. Kaliyev ◽  
Zh. K. Salmukhanbetova
Keyword(s):  
Protected Area ◽  
Buffer Zone ◽  
Mountain Range ◽  
Natural Ecosystems ◽  
Red Data Book ◽  
Malus Sieversii ◽  
Natural Park ◽  
Data Book ◽  
Celtis Australis ◽  
Anthropogenic Ecosystems

The article presents the results of mapping ecosystems of the protected area of the Natural Park “Medeu”,located on the northern slope of the Trans-Ili Alatau mountain range. The map of ecosystems and a legend has beencompiled. The legend contains 13 numbers. The largest sections of the legend are the natural ecosystems of the protectedarea and the natural-anthropogenic ecosystems of the buffer zone and the zone of limited economic activity. The habitatsof species from Red Data book of Kazakhstan that form communities (Malus sieversii (Ledeb.) M. Roem., Armeniacavulgaris Lam., Celtis australis subsp. caucasica (Willd.) C. C. Towns. identified, and their brief characteristics are given.

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