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Por: Maribel Rivera Gómez | Fecha: 2017

Leatherback turtle, Dermochelys coriacea is the only species within the Dermochelyidae family. It is the species of marine turtle with the widest geographic distribution, it being in all oceans of the world except Antarctic Ocean. In Colombia it has been frequently reported in the Atlantic where even important breeding beaches and transit zones has been recognized. However, for the Colombian Pacific the information is limited, because the observations of individuals are anecdotal and its presence has only been reported at El Valle – Utría Cove, Chocó. In this document the presence of one adult of D. coriacea is reported at the marine protected area of the Gorgona Natural National Park (Cauca department), 350 kilometers to the south of Utría Cove.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Agustín Rudas-Ll. | Fecha: 2016

Potential areas of distribution of the common cattle tick Rhipicephalus (Boophilus) microplus in the Altiplano Cundiboyacense are presented, using two algorithms of ecological niche modeling (Maxent and Classification Trees). The algorithms were complementary, with excellent and significant returns, registering AUC (0.70 and 0.90 Maxent Classification Trees), and low values of omission errors (0.00% and 4.6% Maxent Classification Trees). The landscape along with the presence of the host, altitude, precipitation, temperature and humidity of the first wet quarter, were the most important variables in modeling. The north-eastern region of the Altiplano has the best potential for the establishment of this species.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Diana Carolina Macana García | Fecha: 2017

Lake Tota is at 3015 m a.s.l in the eastern Andean cordillera of Colombia. It was declared an Important Bird area - IBA, because it is a strategic breeding area for endemic and threatened species and for its large concentration of resident and migratory waterfowl species. This publication provides a current list of birds, based on direct observations reported by authors from 2003 to 2016. These records were analyzed and compared with historical published data, we present an analysis of five conservation priority species and point out the need for citizen participation to create a civic movement calling attention to the importance of this aquatic ecosystem to the environmental government agencies negative ecological impacts that have been afflicting this aquatic ecosystem for more than 60 years ago, and to insist that it be designated as a RAMSAR site.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Héctor E. Ramírez-Chaves | Fecha: 2016

Recent records of porcupines, Coendou quichua and Coendou prehensilis are reported for the department of Córdoba, in the Caribbean region of Colombia. These are from the southern part of the department, from remote regions and the buffer area of the Paramillo National Nature Park. The locality reported here is the seventh verified for the country. Illegal trafficking of one individual of C. prehensilis was observed and comments on its use and threats it faces on a national level are given.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Daniel Cruz | Fecha: 2017

Relative fecundity in fishes is the estimated number of oocytes of a female during spawning. This aspect was investigated in Grundulus quitoensis topotypic specimens from the “El Voladero”, a high Andean lake in Ecuador. Gonad maturation stages (mature and immature) were identified by means of direct observation, subsequently, the relative fertility (FRP) as function of the weight and the total length (TL) were calculated. Average TL of females was 63.9 mm. The numbers of oocytes ranged from 75 to 716 per female, in total 5691 oocytes were counted from 16 females. TW ranged from 0.5 to 4.7 g, whereas TL ranged from 36.7 to 63.9 mm. Relative fecundity ranged from 1.6 to 14.3 oocytes per mm TL (= 6.9 ± 3.6 mm-1) and from 47.2 to 319.1 oocytes per g of TW (= 148.9 ± 74.9 g-1). It is important to know the life cycle and natural history of a species, since they contribute to the ecological knowledge of the fishes that inhabit the high Andean lakes, as is the case of this study of G. quitoensis.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Jairo Péres-Torres | Fecha: 2016

A taxonomic list of the mammals recorded from the department of Córdoba is presented with data from reference collections of national and foreign museums. We include research results from research groups at the Unicórdoba Biodiversity research center (University of Cordoba) and the Functional Ecology Laboratory (UNESIS- Pontificia Universidad Javeriana). Databases of 13 museums in North America (MaNIS) were reviewed. Besides the records found in the Smithsonian National Museum of Natural History (NMNH), Royal Ontario Museum (ROM), Texas Cooperative Wildlife Collection (TCWC) and USA Field Museum of Natural History (FMHN). Mammals of Córdoba department are represented by 40 families, 90 genera and 117 species. The greatest species richness of mammals was found in the subregions of upper Sinú and San Jorge. The greatest number of species are of the order Chiroptera (48.9 %), followed by Carnivora (12 %), Rodentia (10.3 %) and Cetacea (9.4 %).

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Mónica Díaz-Páez | Fecha: 2017

An experiment of ecological restoration was established in a landscape degraded by livestock. We studied cuttings and seedlings of Clusia multiflora, Hedyosmum sp., Meriania. nobilis, Piper sp., Saurauia sp., Tibouchina. Lepidota, Tournefortia sp., and Weinmannia sp., based on the availability and importance of these species in the area. After 13 weeks the mortality of the cuttings was total, and for the seedlings it was of 50 %. To improve the adaptation of the species and to include several new ones, in the second phase of the experiment we rescued new 1m tall seedlings, and acclimated them in a nursery for three months. We also applied Aloe vera crystals to the new cuttings to facilitate their rooting. In this second phase, seedlings (95 %) of the species became established: Billia rosea, Bocconia frutescens, Fuchsia sp., Hedyosmum sp., Inga sp., Myrsine coriacea, Saurauia sp., Schefflera sp., Siparuna sp. The surviving cuttings (33 %) were the following: Brugmansia arborea, Brunellia sp., and Saurauia sp. In general, rescued seedlings showed high potential for establishment, and may well promote restoration processes.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Héctor E. Ramírez-Chaves | Fecha: 2016

The Zoologische Staatssammlung Muenchen (ZSM), Germany, possesses an historical value because is the depositary of important specimens that were used in the description of different species, especially from South America. Unfortunately, there is not available information about the mammals of Colombia housed at this collection. For this, 33 specimens from Colombia belonging to six orders, 14 genus, and 17 species were reviewed. Cranial and external measurements are given, as well as information of collectors and localities. Of these specimens, 23 were captured in Northern Colombia and imported to Germany to a pet store between 1954 and 1966. Due the difficulties to access to information of mammals from Colombia in European museums and collections, the information summarized here may be useful for people interested in these species.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: María Cecilia Londoño | Fecha: 2017

We began our study with an overview of the relationship between knowledge and decisions, especially the so-called science – policy gap. We develop the argument that the lack of explicit distinction among decision makers, among data, information, and verified knowledge, very often contributes to deepen the mentioned gap. Therefore, we propose a conceptual framework for the functional integration of data, information, and knowledge, to be applied in biodiversity research, differentiating the scientific instances of consignation, integration, and interpretation of events. When applied to the research endeavors of the Humboldt Institute, the differentiation of these components may help create a valuechain of pertinent knowledge in real world situations regarding biodiversity and ecosystem services management in the territory.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros

Por: Laura Gisela Agudelo Álvarez | Fecha: 2017

Along the vertical gradients from the Xeridas plateau to the canyons of the lower Chicamocha and the upper Sogamoso rivers, three landscapes are identified: high plateau, hanging valleys and canyon, corresponding to socio-ecosystemic scenarios. Physical environment, vegetation and degree of alteration of the systems that conform these landscapes are described. The history of disturbance from prehispanic to present times and the resulting patterns of ecological change point to a sequence of different means of transformation that overlap historically in this system, and that can be interpreted as a stratified landscape with a trend of degradation that continues today. The restoration model is constructed at three scales, macro, mid and micro: landscape, micro-drainages, and individual properties. The objective is to introduce at each scale a regenerative trajectory aiming to restore a dynamic equilibrium between the components of conservation, regeneration, production and shelter articulated along vertical corridors of the canyons and oriented by fair water use and conservation by highlands and lowlands.

Fuente: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt Formatos de contenido: Artículos

Temas:
Otros