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| Registros recuperados: 2.139 | |
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| Arango,Claudia P.; Solano,Oscar D.. |
| Soft bottom megabenthic communities have been poorly studied in the Caribbean Sea. In this study we describe the structure and species composition of a Crustacea-Mollusca megafaunal community based on beam trawl samples taken between 13 and 60 m depth at the southwestern region of Santa Marta, Colombian Caribbean. Classification and ordination analyses using abundance data of crustaceans and molluscs produced two main groups (A and C), which seem to be controlled by depth and sediment characteristics. Group A consisted of species collected at the deeper stations and high content of silts (between 30 and 60 m depth) and exhibited the highest density and biomass mean values. The decapod Chasmocarcinus cilindricus was found as the characteristic species for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Megafauna; Soft bottoms; Communities; Caribbean; Colombia. |
| Ano: 1999 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611999000100008 |
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| Molina Benavides,Raúl Andrés; Sánchez Guerrero,Hugo; Atzori,Alberto Stanislao. |
| Abstract Thermal environment is recognized to be one the most important ecological factor to determine domestic animal growth, development and productivity for direct and indirect effects on its physiology and behavior. Despite having specific and individual adaptation, is very common, within seasonal or diurnal temperature variations, animals deal with situations outside their thermal comfort zone. Due to heat stress, dairy cows reduce milk production and fertility, and therefore, had achieved an increasing in metabolic disorders incidence, causing low revenues to farm in short and medium periods. Due to world climate change more impact of the meteorological variables on animal responses is expected for the future. This study aimed to describe and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate change; Grazing; Livestock production systems; Milk production; System dynamics; Temperature. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100059 |
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| OKLANDER,LUCIANA INÉS; STEINBERG3,ELIANA RUTH; DOLORES MUDRY,MARTA. |
| Given their great variability, microsatellites or STRs became the most commonly used genetic markers over the last 15 years. The analysis of these markers requires minimum quantities of DNA, allowing the use of non invasive samples, such as feces or hair. We amplified the microsatellite Ap74 in blood and hair samples in order to analyze the levels of genomic conservation among a wide range of primates including: Lemur catta, Alouatta caraya, Ateles belzebuth, Ateles chamek, Pan troglodytes, Papio sp., and Homo sapiens. In all cases we obtained amplification products that exhibited similar size both in monkeys and human (oscillating between 126 and 176 bp), except in the lemur where the detected fragment presented a size of approximately 1000 bp. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Primates; Microsatellite markers; PCR amplification; Non-invasive sampling; Genomic conservation; Genetic variability. |
| Ano: 2012 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2012000100007 |
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| GONZÁLEZ,F; CAICEDO,JC; CRUZ-ROA,A; CAMARGO,J; SPINEL,C. |
| Histology images are an important resource for research, education and medical practice. The availability of image collections with reference purposes is limited to printed formats such as books and specialized journals. When histology image sets are published in digital formats, they are composed of some tens of images that do not represent the wide diversity of biological structures that can be found in fundamental tissues. Making a complete histology image collection available to the general public having a great impact on research and education in different areas such as medicine, biology and natural sciences. This work presents the acquisition process of a histology image collection with 20,000 samples in digital format, from tissue processing to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Histological images; Virtual atlas; Content-based image retrieval. |
| Ano: 2010 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2010000300016 |
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| CALIZAYA-MELO,Yeison Andru; AGUILAR,Marlene Lucía; LÓPEZ TEJEDA,Evaristo. |
| RESUMEN El presente estudio describe las abejas nativas en la Provincia Puna de la Región Andina, en la Reserva Nacional de Salinas y Aguada Blanca en Arequipa, Perú. Los muestreos se realizaron durante siete meses en tres zonas representativas del bosque de Polylepis y del ecosistema Yaretal entre los 3900-4300 m. s. n. m. utilizando dos métodos de colecta: red entomológica y platos amarillos. En total se colectaron 545 especímenes pertenecientes a 26 morfoespecies, diez géneros y cuatro familias. La familia Halictidae presentó la mayor abundancia de individuos 475 (87,1 %), seguida de Megachilidae con 43 individuos (7,7 %), Colletidae 21 individuos (3,8 %) y Apidae con seis individuos (1 %). El género más abundante y diverso fue Caenohalictus con ocho... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abejas nativas; Diversidad; Inventarios; Conservación; Neotrópico. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000300295 |
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| AGUILAR SIERRA,CLARA ISABEL; SMITH PARDO,ALLAN HENRY. |
| Se estudiaron las cargas polínicas de 13 taxones de abejas capturadas visitando a Mimosa pigra en la zona de influencia del Embalse Porce II (Antioquia, Colombia). De los 21 tipos polínicos encontrados, M. pigra presenta el mayor porcentaje acumulado de colecta; Mimosa pudica, Piper aduncum, Solanum diversifolium, Warszewiczia coccinea y Psidium guajava, en su orden, se pueden considerar fuentes alternativas de polen, para varias de las especies de abejas cuyas cargas polínicas fueron analizadas. Dentro de las especies de abejas capturadas visitando a M. pigra se pueden diferenciar varios grupos según el tipo y abundancia relativa de los tipos polínicos encontrados en sus cargas. Uno de ellos, incluye a siete especies de abejas con más del 85% de granos de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mimosa pigra; Cargas polínicas; Tipos polínicos; Abejas; Polinización. |
| Ano: 2009 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2009000100006 |
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| Gómez,Susana; Bonilla Correa,Carmen Rosa; Menjívar Flores,Juan Carlos. |
| En un cultivo comercial del municipio de Pereira, Risaralda, se evaluó la extracción de nutrientes de Zantedeschia elliottiana variedad Cristal Blush y su relación con la acumulación de materia seca y la producción de tallos florales y bulbos durante el primer ciclo de producción. Se utilizó un diseño bloques completos al azar con cuatro tratamientos correspondientes a diferentes niveles de fertilización y tres repeticiones. Se caracterizaron los cambios en la concentración de nutrientes en bulbos y parte aérea de la planta en cada etapa de desarrollo mediante muestreo destructivo de tejidos a 28, 49, 63, 77, 98 y 140 días después de la siembra. Las concentraciones de N, Ca, Mg y B en bulbo y las concentraciones foliares de N, Mg y Cu en la época de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilización; Requerimientos nutricionales; Extracción de nutrientes; Producción de bulbos; Zantedeschia elliottiana. |
| Ano: 2010 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122010000400011 |
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| Puentes-Páramo,Yina Jazbleidi; Menjivar-Flores,Juan Carlos; Gómez-Carabalí,Arnulfo; Aranzazu-Hernández,Fabio. |
| En el centro experimental de la Federación Nacional de Cacaoteros de Colombia (Fedecacao), localizado en el municipio de Miranda, Cauca (Colombia) se evaluó la capacidad de absorción y distribución de los nutrientes N, P y K en hojas, cáscara y almendra de los clones de cacao (Theobroma cacao L.): CCN-51 y ICS-95 (auto-compatibles) y TSH-565 e ICS-39 (auto-incompatibles), y su influencia en el rendimiento. El diseño experimental fue bloques completos al azar con cinco tratamientos y cuatro repeticiones; los tratamientos consistieron en un control (TR) equivalente a la concentración de nutrientes en el suelo del centro experimental (kg/ha) (49 N, 23.5 P y 146.5 K), e incrementos en esta concentración equivalentes a 25%(T1), 50% (T2), 75% (T3) y 100% (T4).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Theobroma cacao L; Fertilización; Nutrición; NPK; Auto-compatibilidad; Auto-incompatibilidad. |
| Ano: 2014 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122014000200007 |
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| Chica Toro,Faber de Jesús; Garzón-González,Jorge M.. |
| Abstract The aim of this study focused on the construction of the absorption and extraction curves under an aeroponic system for White chrysanthemum cv. Atlantis White, and therefore, propose the periods of maximum and minimum nutrient accumulation from aboveground, root and total biomass. Vegetative cycle of the plant, measured from the day after transplantation (dat) to aeroponic system, and the first day of court lasted 49 days. Evaluations were carried out each week on plants, in absolute competition. For the average aboveground biomass, three replicates were recorded. To obtain total root biomass only one sample, was measured. Therefore, total biomass in average, had achieved 130.9313 g.plant-1, where 72.26% (94.163 g) corresponded to the aboveground... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Nutrient balance (plants); Nutritional status; Ornamental species; Plant development stage; Plant nutrition; Plant soil relations. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100086 |
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| Registros recuperados: 2.139 | |
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