scholarly journals Expanding the knowledge of plankton diversity of tropical lakes from the Northeast Colombian Andes

2020 ◽  
Vol 68 (S2) ◽  
pp. S159-S176
Author(s):  
María I. Criales-Hernández ◽  
Diana M. Sanchez-Lobo ◽  
Johanna K. Almeyda-Osorio
Keyword(s):  
New Records ◽  
Research Articles ◽  
Tropical Lakes ◽  
Physicochemical Variables ◽  
Tropical Mountain ◽  
Colombian Andes ◽  
Bibliographic Search ◽  
Plankton Diversity ◽  
Lowland Lakes ◽  
Planktonic Communities

Introduction: A large number of planktonic communities found in tropical lakes have not yet been recorded, limiting understanding of how these ecosystems function and of the role that organisms play within them. Objective: Add new records of previously described species and to contribute to the knowledge of the planktonic communities present in tropical mountain and lowland lakes of the northeast Colombian Andes. Methods: Planktonic samples were collected and physicochemical variables measured in nine tropical lakes. Organisms were identified and a bibliographic search was carried out in databases and research articles to the identification of the new records to Colombia. Results: We present the data corresponding to six physicochemical variables measured in tropical lakes of this region and expand the existing information on organisms present in tropical lakes with a list of 391 taxa (299 phytoplankton and 92 zooplankton). The proportion of planktonic species unique to tropical lakes and the low similarity between lake types found with a Jaccard analysis indicated high heterogeneity of ecological conditions in the studied lakes. Conclusions: The 391 taxa found and 15 new records contribute to the list of planktonic organisms present in tropical lakes located in high and low areas of the Colombian northeast Andes.

scholarly journals SIMULATION OF BIOMASS DYNAMICS IN PLANKTON OF A HIGH-ALTITUDE ANDEAN TROPICAL RESERVOIR IN COLOMBIA.

2021 ◽  
Vol 26 (3) ◽  
pp. 404-413
Author(s):  
Edison Andres Parra Garcia ◽  
Nicole Rivera Parra ◽  
Boris Anghelo Rodriguez Rey ◽  
Isabel Cristina Hoyos Rincón
Keyword(s):  
Dynamic Model ◽  
Top Predator ◽  
Tropical Reservoir ◽  
Energy Flows ◽  
Trophic Network ◽  
Bibliographic Search ◽  
Predator Interactions ◽  
Primary Consumers ◽  
Biomass Dynamics ◽  
Planktonic Communities

The understanding of the relationships between the planktonic communities in a reservoir allows us to infer possible changes in the redistribution of matter and energy flows in these systems. This work proposes a dynamic model for the trophic network of the Riogrande II tropical reservoir, which integrates the planktonic trophic chains of detritus and grazing, limiting the prey-predator interactions by introducing the prey meeting factor (pmf). We built a dynamic model of mass balance supported by an extensive bibliographic search. The limitations of consumers and resources were represented simultaneously by means of the pmf. The data used to validate the model were compiled from previous investigations carried out in this reservoir from 2010 to 2013. The values of pmf that we found in each simulation suggest that the top predator can access its main prey in certain concentrations of total phosphorus, with a probability of encounter ranging from 9.3 % to 17.7 %. Our simulations indicate that most of the primary production is poorly used by the primary consumers in the photic zone, however, it enters in the flows of the detrital chain and supports the production of zooplankton almost entirely. According to this finding, the biomass densities obtained in the previous studies can be better explained by the causal relationships assumed in this model.

scholarly journals Uso de la espectroscopia de infrarrojo cercano para la medición de la saturación de oxígeno muscular en el deporte

2019 ◽  
Vol 0 (Avance Online) ◽  
Author(s):  
CD Gómez-Carmona ◽  
A Bastida-Castillo ◽  
J Pino-Ortega
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared ◽  
Web Of Science ◽  
Training Programs ◽  
Research Articles ◽  
Original Research ◽  
Inclusion Criteria ◽  
Bibliographic Search ◽  
Method Of Evaluation ◽  
The Web

RESUMEN El objetivo de este trabajo fue revisar el funcionamiento de la espectroscopia de infrarrojo cercano y sus diferentes aplicaciones en el ámbito deportivo como son: la descripción de las exigencias oxidativas mediante su monitorización tanto en contextos de resistencia y fuerza, y la evaluación de su aplicación en programas de entrenamiento. Para ello se realizó una búsqueda bibliográfica en las bases de datos Web of Science y Scopus en la que se obtuvieron, después de la exclusión de artículos que no se ajustaron a los criterios de inclusión, un total de 38 artículos originales de investigación. Los datos resultantes que fueron extraídos de los estudios incluidos fueron datos de los participantes, parámetros del programa de entrenamiento o ejercicio, los músculos evaluados, el dispositivo y método de evaluación y los principales resultados. ABSTRACT The objective of this research was to review the operation of near-infrared spectroscopy and its different applications in the sports field, such as: the description of oxidative requirements through its monitoring in both resistance and strength contexts and the evaluation of its application in training programs. A bibliographic search was carried out in the Web of Science and Scopus databases, in which a total of 38 original research articles were obtained after exclusion of articles that did not meet the inclusion criteria. The resulting data that were extracted from the included studies were data of the participants, parameters of the training program or exercise, the muscles evaluated, the device and method of evaluation and the main results. RESUMO O objetivo desta pesquisa foi revisar o funcionamento da espectroscopia do infravermelho próximo e suas diferentes aplicações no campo esportivo, tais como: a descrição dos requisitos oxidativos através de seu monitoramento em contextos de resistência e força e a avaliação de sua aplicação em programas de treinamento . Uma pesquisa bibliográfica foi realizada nas bases de dados da Web of Science e Scopus, no qual foram obtidos 38 artigos de pesquisa originais após a exclusão de artigos que não atendiam aos critérios de inclusão. Os dados resultantes que foram extraídos dos estudos incluídos foram dados dos participantes, parâmetros do programa de treinamento ou exercício, os músculos avaliados, o dispositivo e o método de avaliação e os principais resultados.

scholarly journals Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil

2019 ◽  
Vol 28 (3) ◽  
pp. 458-464
Author(s):  
Aprígio Mota Morais ◽  
Melissa Querido Cárdenas ◽  
José Celso de Oliveira Malta
Keyword(s):  
Fish Species ◽  
New Records ◽  
Nematode Species ◽  
Zoonotic Potential ◽  
Central Amazonia ◽  
Pygocentrus Nattereri ◽  
Lowland Lakes ◽  
Nematode Fauna

Abstract Between March and October 2008, 355 specimens of Pygocentrus nattereri were collected from the lowland lakes of Central Amazonia, Brazil, to study their nematode fauna. A total of 1.116 specimens of Nematoda were collected, belonging to six species. Procamallanus (Spirocamallanus) inopinatus was the species with the highest parasite indices. Larvae of Anisakis sp. have zoonotic potential and were found parasitizing the intestine and liver of Pygocentrus nattereri. Some of these nematode species were new records for the host P. nattereri. The diversity of nematodes that use P. nattereri as a host indicates the important role of this fish species in the maintenance of these six nematode species in the lowland lakes of Central Amazonia.

New records of the rare bat Vampyressa melissa Thomas, 1926 (Chiroptera: Phyllostomidae: Stenodermatinae) from the eastern slope of the Andes in the Colombian Orinoco basin

Mammalia ◽  
2018 ◽  
Vol 82 (3) ◽  
pp. 298-302
Author(s):  
Miguel E. Rodríguez-Posada ◽  
Darwin M. Morales-Martínez ◽  
Diego R. Gutiérrez-Sanabria ◽  
María C. Calderón-Capote ◽  
Camilo Fernández-Rodríguez
Keyword(s):  
Rare Species ◽  
New Records ◽  
Eastern Slope ◽  
The South ◽  
The North ◽  
The Andes ◽  
Colombian Andes ◽  
New Localities

Abstract Vampyressa melissa (Thomas, 1926) is a rare species listed as vulnerable by IUCN. Its distribution encompasses the eastern slope of the Andes from Peru to Colombia. However, the northern part of its distribution exhibits a gap of 1050 km. Here, we record two new localities for V. melissa in the eastern foothills of the Colombian Andes, filling the distribution gap 223 km to the south of the northern most known locality and 822 km to the north of the nearest locality in Ecuador. Finally, we propose hypotheses about the factors that could determine the rarity category of this species.

International Research and Variation in Views of Ethnicity

2012 ◽  
Vol 2 (2) ◽  
pp. 66-72
Author(s):  
Ella Inglebret ◽  
Amy Skinder-Meredith ◽  
Shana Bailey ◽  
Carla Jones ◽  
Ashley France
Keyword(s):  
United States ◽  
Classification System ◽  
International Research ◽  
The United States ◽  
Research Articles ◽  
Journal Articles ◽  
Research Participants ◽  
The Past ◽  
International Scale ◽  
Publication Patterns

The authors in this article first identify the extent to which research articles published in three American Speech-Language-Hearing Association (ASHA) journals included participants, age birth to 18 years, from international backgrounds (i.e., residence outside of the United States), and go on to describe associated publication patterns over the past 12 years. These patterns then provide a context for examining variation in the conceptualization of ethnicity on an international scale. Further, the authors examine terminology and categories used by 11 countries where research participants resided. Each country uses a unique classification system. Thus, it can be expected that descriptions of the ethnic characteristics of international participants involved in research published in ASHA journal articles will widely vary.

Social Representations and Commitment

2018 ◽  
Vol 23 (3) ◽  
pp. 233-249 ◽  
Author(s):  
Eric Bonetto ◽  
Fabien Girandola ◽  
Grégory Lo Monaco
Keyword(s):  
Social Representations ◽  
Social Representation ◽  
Second Line ◽  
Review Of The Literature ◽  
First Line ◽  
Research Perspectives ◽  
The Social ◽  
Bibliographic Search ◽  
English Articles

Abstract. This contribution consists of a critical review of the literature about the articulation of two traditionally separated theoretical fields: social representations and commitment. Besides consulting various works and communications, a bibliographic search was carried out (between February and December, 2016) on various databases using the keywords “commitment” and “social representation,” in the singular and in the plural, in French and in English. Articles published in English or in French, that explicitly made reference to both terms, were included. The relations between commitment and social representations are approached according to two approaches or complementary lines. The first line follows the role of commitment in the representational dynamics: how can commitment transform the representations? This articulation gathers most of the work on the topic. The second line envisages the social representations as determinants of commitment procedures: how can these representations influence the effects of commitment procedures? This literature review will identify unexploited tracks, as well as research perspectives for both areas of research.

Massive retroperitoneal haematoma because of renal cyst rupture, report of a case

2020 ◽  
pp. 1-5
Author(s):  
Óscar Alonso Plaza ◽  
Carlos Andrés González ◽  
Ana María Mantilla ◽  
Brayan Andrés Puentes
Keyword(s):  
Cause Of Death ◽  
Renal Cyst ◽  
Retroperitoneal Haematoma ◽  
Pathological Correlation ◽  
Bibliographic Search ◽  
Cyst Rupture

An exhaustive investigation is carried out on the cause of death of this pedestrian, carrying out an extensive bibliographic search taking into account the pathophysiology of trauma for this type of accident, and then making a clinical-pathological correlation of the series of events that concluded with the death of this person and its applicability in trauma services.

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