A5059821335- Water Resource Management and Quality
- Fish biology, ecology, and behavior
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental and Cultural Studies in Latin America and Beyond
- Isotope Analysis in Ecology
- Aquatic Invertebrate Ecology and Behavior
- Freshwater macroinvertebrate diversity and ecology
- Marine Bivalve and Aquaculture Studies
- Water Quality and Pollution Assessment
- Diatoms and Algae Research
- Educational methodologies and cognitive development
- Environmental Chemistry and Analysis
- Environmental and Ecological Studies
- Invertebrate Taxonomy and Ecology
- Environmental Toxicology and Ecotoxicology
- Environmental Science and Water Management
- Marine and coastal ecosystems
- Animal Ecology and Behavior Studies
- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Biocrusts and Microbial Ecology
- Fish Ecology and Management Studies
- Wastewater Treatment and Nitrogen Removal
- Wildlife-Road Interactions and Conservation
- Sustainability and Ecological Systems Analysis
Pedagogical and Technological University of Colombia
2012-2024
John Wiley & Sons (United States)
2020
Ecological Society of America
2020
Universidad Nacional de Colombia
2011
Abstract The keystone roles of mega‐fauna in many terrestrial ecosystems have been lost to defaunation. Large predators and herbivores often play their native ranges, some established invasive populations new biogeographic regions. However, few empirical examples are available guide expectations about how affect novel environmental evolutionary contexts. We examined the impacts on aquatic an emerging population hippopotamus ( Hippopotamus amphibus ) that has growing Colombia over last 25 yr....
The Andes mountains extend North-South in a latitudinal gradient of 8,500 km. Due to the great climatic variety and peculiar north-south orographic distribution, lakes are very diverse, including different lake origins contrasting morphometries. Here, we reviewed more than 700 ecological studies on Andean identify main threats these freshwater systems. most important UV radiation, changes water balance, eutrophication, all three interacting with climate change, alien species introduction,...
Study of the mechanisms regulating species richness in aquatic systems is essential for understanding functioning and conservation these environments, especially Neotropics, given lack relevant information. In 15 lakes three geographical regions South America, we studied effects lake size, concentration chlorophyll a, variety photosynthetic pigments temporal stability habitat on crustacean zooplankton richness. Lake size a did not show significant relationship with However, degree...
We present the compilation of published and unpublished records continental copepods Colombia, as well personal observations by authors, yielding an additional list 52 species subspecies (7 calanoids, 20 cyclopoids, 25 harpacticoids).In addition to our former inventory (2007) 69 species, total number now reaches 121 taxa, increasing 75 % known copepods.Freshwater taxa increased in 15 subspecies.The brackish (and marine collected environments), recorded from coastal lagoons temporal offshore...
Functional morphology corresponds to adaptive responses changes in the environment. In phytoplankton, traits such as development of mucilage, oil vesicles, filaments and variation surface/volume ratio, allow algae deal with sedimentation, optimizing light nutrient uptake. The aim this research was evaluate relationship between physical chemical conditions Tota Lake (Boyacá, Colombia). For this, ten samplings were undertaken a monthly basis October 2013 July 2014. We measured water pH,...
Introducción: La estructura, diversidad taxonómica y funcional del ensamblaje de macroinvertebrados acuáticos son estimadores sensibles a las variaciones medio circundante. El ambiente físico es un factor fundamental, donde el sustrato la dinámica hidráulica modifican disponibilidad recursos, estructuración, funcionamiento comunidad ecosistema. Objetivo: Determinar bajo diferentes condiciones abióticas en río Hato Laguna, tributario Lago Tota. Métodos: Se recolectaron 120 muestras biológicas...
Intermittent streams in Colombia are located principally dry forest zones and important maintaining the hydrological cycle sustaining biodiversity water supply for local human populations. Some aspects of functioning these systems not known detail, especially insular areas. This study describes changes species composition, diversity, some functional traits macroinvertebrates related to discharge fluctuations three intermittent on Old Providence Island. Sampling was performed during rainy...
Processes of environmental transformation that currently occur in the climatic change context generate changes ecosystems and biological communities. ?How populations respond to these stressors? ?what effects could on taxonomic ecological diversity? The composition structure zooplankton was analyzed with relationship a tropical water reservoir located at 6o02`18``N 73o29`16`` W. During four months, samples were taken weekly covering stations low, medium, high precipitation. A degree temporal...
Las actividades de producción piscícola en el Lago Tota, Boyacá aumentan las concentraciones amonio y nitrato, nutrientes que están acelerando los procesos eutrofización. Entre comunidades microbianas regulan la entrada nitrógeno alóctono figuran bacterias nitrificantes determinación su abundancia ecosistemas es una medida bioindicación contaminación. El objetivo del estudio fue cuantificar caracterizar bioquímicamente cultivables zona limnética lago. Para medir abundancia, se usó técnica...
El tiempo de retención hidráulica (TRH) constituye un factor determinante en la expresión estructura biológica y el funcionamiento los ecosistemas acuáticos por su asociación con dinámica entrada salida agua del sistema, sin embargo, poco se conoce sobre efecto variabilidad estructuración función las comunidades acuáticas. En este estudio determinó TRH durante seis meses pequeño reservorio región andina analizó cómo variación incide comportamiento variables físicas, químicas biológicas. Se...
The water reservoir La Playa (upper basin of the Chicamocha River) is a receptor system residual and works as flow regulator to optimize an irrigation district. Although, it strategic system, there no information about quality. plankton structure relationship with physical chemical variables was evaluated for two contrasting hydro-climatic periods (October 2011 February 2012) three stations (lacustrine, transition riverine). According principal component analysis during high rainfall oxygen...
El lago Sochagota es un cuerpo de agua que cumple un rol ecologico y economico importante para la region central del departamento Boyaca. Para comprender, en parte, su funcionamiento, analizamos la composicion taxonomica estructura cuantitativa del zooplancton en dos epocas contrastantes (seca y de lluvias), tres zonas Sochagota, teniendo cuenta los cambios las condiciones fisicas quimicas. Fue registrada una riqueza 16 especies (2 ciclopoides 14...
Introduction: The benthic fauna of the littoral zone in lakes is important transferring energy to other trophic levels, habitat coupling, and helping keep stability. study this type interactions lentic systems priority, since functional aspects about biological communities are unknown. Objective: Describing relations aquatic invertebrates a tropical high mountain lake by characterizing gut content stable isotope analysis δ13C δ15N. Methods: Samples were collected Lago de Tota where Egeria...
La estructura taxonómica de la comunidad fitoplanctónica se encuentra influenciada por múltiples factores, en su mayoría integrados aspectos funcionales y del metabolismo ecosistema. Con el objetivo evaluar variación fitoplancton lagos andinos sobre un amplio espectro condiciones, realizó estudio 12 Cordillera Oriental colombiana agrupados diferentes rangos altitudinales (alta montaña tropical, andino tierras bajas). Bajo criterio sustitución espacio tiempo, hicieron mediciones variables...