Browsing Escuela de Ciencias Biológicas by Title
Now showing items 1112-1131 of 1181
-
The relationship between humidity, light and the activity pattern of a velvet worm, Epiperipatus sp. (Onychophora: Peripatidae), from Bahía Drake, South Pacific of Costa Rica
(Instituto Internacional de Ecología (Brasil), 2018-10-31)Even though the Onychophora represent a whole phylum, observations of their activity pattern in nature are almost non-existent. Here we report on the relationship between humidity and light and activity pattern of a new ... -
The relationship between perch type and aggressive behavior in the lizard Norops polylepis (Squamata: Dactyloidae)
(Universidad de Sao Paulo, 2015)The intensity of aggression against intruders by owners of a territory has been related to the type of resources available to an individual within its territory. The influence of perch-site characteristics on aggressive ... -
The structure and function of dry weather mangrove on the Pacific Coast of Central America, with emphasis on Avicennia bicolor forests
(Estuaries Research Federation, 2013)Mangrove forests along the Pacific Coast of Central America cover around 4,000 km2. Most of this coast is occupied with tropical dry forest mangroves where basal areas range between 6 and 20 m2 ha−1 and canopy heights ... -
Thermal niche breadth and their relationship with sturnira bat species diversification
(Elsevier (Países Bajos), 2023-10)The interaction between climatic conditions and the ability of organisms to maintain homeostasis regulates the distribution of species on the planet. However, its influence on macroevolutionary dynamics is not well ... -
Thoracic nerve cord - ganglia recognition in intraspecific and interspecific transplants in the white shrimp, Penaeus (Litopenaeus) vannamei
(Science Direct, 2009-03)The recognition response of Penaeus (Litopenaeus) vannamei against thoracic nerve cord–ganglia transplants from three species of Penaeidae: P. vannamei, P. (Litopenaeus) stylirostris, and Trachypenaeus byrdi, and one species ... -
Three New Species and New Records of Dennstaedtia Bernh. from Mesoamerica
(Universidad Nacional, Costa Rica, 2018)Navarrete & Øllgaard [1] indicated the presence of a “C” group within Dennstaedtia Bernh. that contains D. obtusifolia (Willd.) T. Moore, which is the type material of the genus Patania C. Presl and indicated that it ... -
Three New Species of Ferns (Pteridophyta) from Mesoamerica
(Universidad Nacional (Costa Rica), 2017-05-25)In this research three new species of ferns of the Polypodiales Order are described: Ctenitis leonii A. Rojas, Elaphoglossum karinae A. Rojas and Pecluma celaquensis A. Rojas. Ctenitis leonii is characterized by its apical ... -
Three new species ofElaphoglossum Schott ex J. Sm. (Dryopteridaceae) from the pacific of Costa Rica
(Universidad Nacional (Costa Rica), 2017-12)In this paper three new species of Elaphoglossum Schott ex J. Sm., are described and illustrated, located on the pacific slope of Cordillera de Talamanca and Cerro Caraigres (Cerro Dragón), Costa Rica. The new ... -
Tolerancia al calor en Solanum lycopersicum var. cerasiforme comercial y Solanum spp. silvestre, según análisis de marcadores tipo RAPD y genes específicos, y su relación con la productividad
(Universidad Nacional (Costa Rica), 2017)El cambio climático genera alteraciones en las condiciones ambientales que repercuten en los diferentes organismos. En las plantas, la búsqueda de genotipos con loci asociados a la tolerancia al calor resulta necesaria. ... -
Tolerancia térmica en especies arbóreas y enredaderas nativas de Costa Rica: Uso de la sensibilidad de la flourescencia de la clorofila como un bioindicador de la termo tolerancia
(Universidad Nacional (Costa Rica), 2019-06)El proceso de fotosíntesis parte de la energía es atrapa por el centro de reacción es utilizada para la producción de los hidratos de carbono y otra parte es disipada como calor y en menor grado re emitida como energía ... -
Tourism sustainability in a Protected Area: Case Loreto Bay National Park
(Universidad Nacional (Costa Rica), 2021-11-21)El objetivo de este estudio fue evaluar la tendencia del desempeño del turismo sostenible en el Parque Nacional Bahía de Loreto en Baja California Sur, México y sus áreas de influencia, cubriendo el período 2007-2017. ... -
Transversalidad y valores: una propuesta metodológica para incorporarlos en los Programas de estudio de Ciencias y Biología
(Universidad Nacional, Costa Rica, 2004)La creciente crisis social producto de la deficiencia y carencia de valores ha generado un deterioro de la dignidad humana, del orden social y del ambiente entre otras cosas. Es en este punto en donde surge la necesidad ... -
Treasured exceptions: association of morphoanatomical leaf traits with cup quality of Coffea arabica L. cv. “Catuaí ”
(Food Research International, 2021-01-05)The morphoanatomical characteristics of leaves were associated with altitude, hillside, and the cup quality of coffee produced in the Matas de Minas region. Although the small magnitude, there are correlations between cup ... -
Tres especies nuevas de Hymenophyllum Sm. (Hymenophyllaceae, Pteridophyta) para Costa Rica y Colombia
(Universidad Nacional (Costa Rica), 2017-12)En este artículo tres especies nuevas deHymenophyllum Sm. son descritas e ilustradas para Costa Rica y Colombia: H. densipilosum A. Rojas, H. hastatumA. Rojas e H. multicristatum A. Rojas. Todas las especies aquí descritas ... -
Tres especies nuevas de Hymenophyllum Sm. (Hymenophyllaceae, Pteridophyta) para Costa Rica y Colombia
(Universidad Nacional (Costa Rica), 2017-12)En este artículo tres especies nuevas deHymenophyllum Sm. son descritas e ilustradas para Costa Rica y Colombia: H. densipilosum A. Rojas, H. hastatumA. Rojas e H. multicristatum A. Rojas. Todas las especies aquí descritas ... -
Trophic guild and forest type explain phyllostomid bat abundance variation from human habitat disturbance
(Elsevier BV, 2021)The loss of tropical forest cover caused by land-use change is causing changes in populations of animal trophic guilds, including those belonging to Phyllostomidae bat species. They fulfill important ecosystem functions ... -
Trophic guild and forest type explain phyllostomid bat abundance variation from human habitat disturbance
(Cold Spring Harbor Laboratory (Estados Unidos), 2020-02-16)The loss of tropical forest cover caused by land-use change is causing a reduction in functional groups, such as trophic guilds. Phyllostomid bats (family Phyllostomidae) are essential in the Neotropics since they occupy ... -
Two new records of the fern genus Lindsaea Dryand. ex Sm. (Lindsaeaceae) from Panama
(Universidad Nacional (Costa Rica), 2023-05-19)Presentamos los primeros registros de Lindsaea leprieurii Hook. y Lindsaea angustipinna A.Rojas & Tejero de Panamá. Se proporcionan imágenes, comentarios taxonómicos, evaluaciones de conservación y notas geográficas. -
Two New Species of Edible Berries, One in Gaultheria L. and Other in Vaccinium L. (Ericaceae) from Costa Rica and Panama
(Universidad Nacional (Costa Rica), 2021-11-30)Estudios recientes sobre la flora de los páramos en Costa Rica, revelan dos nuevas especies endémicas taxones descritos aquí como Gaultheria paramicola A. Rojas y Vaccinium reptans A. Rojas, ambos conocidos sólo de Costa ... -
Two ways to be a velvet worm
(Universidad de Costa Rica (Costa Rica), 2019)There are two ways to be a velvet worm. One is to mate vaginally at a young age, give birth in any month and have small, scarce males. The other is to periodically inseminate through the body wall, with sexual equality in ...