Now showing items 41-50 of 62
Brachiopods, sipunculans, enteropneusts and metals from two estuarine tidal flats, Pacific, Costa Rica
Braquiópodos, sipuncúlidos, enteropneustos y metales en dos planicies estuarinas de marea, Pacífico, Costa Rica.
Reports on the abundances and on metal concentrations in intertidal estuarine invertebrates from the Eastern Tropical Pacific are rare. Thus, the objectives of this report are to make accessible data on the abundances ...
Biodiversity and density of subtidal benthos of an oceanic tropical island (a comparison within the Pacific Ocean)
The marine macrofauna of the shallow sandy bottom of Isla del Coco, Costa Rica (5°32′N-87°04′W) was assessed in April 2010. Comparisons of richness, density and diversity between levels of exposure to ocean influence were ...
Hydrogen production by immobilized Synechocystis sp. PCC 6803
The ability of the immobilized Synechocystis sp. PCC 6803 cells to produce hydrogen via an indirect light driven process was investigated. Cells were successfully immobilized in a calcium alginate gel matrix. Beads were ...
A revision of the genus Muricea Lamouroux, 1821 (Anthozoa, Octocorallia) in the eastern Pacific. Part II
The species of the genus Muricea were mainly described from 1846 to 1870. After that very few contributions were published. Although the highest richness of Muricea species is in the eastern Pacific shallow waters, a ...
DNA-assisted identification of Caulerpa (Caulerpaceae, Chlorophyta) reduces species richness estimates for the Eastern Tropical Pacific
Taxonomy and species richness estimates for the genus Caulerpa have proven challenging due to the difficulty of assessing morphological species limits. In the present study we evaluate the taxonomy of the genus and assess ...
Homoplasious colony morphology and mito-nuclear phylogenetic discordance among Eastern Pacific octocorals
Octocorals are a diverse and ecologically important group of cnidarians. However, the phylogenetic relationships of many octocoral groups are not well understood and are based mostly on mitochondrial sequence data. In ...
Interannual variability of the midsummer drought in Central America and the connection with sea surface temperatures
The midsummer drought (MSD) in Central America is characterised in order to create annual indexes representing the timing of its phases (start, minimum and end), and other features relevant for MSD forecasting such as the ...
Updated checklist and analysis of completeness of the marine fish fauna of Isla del Coco, Pacific of Costa Rica
Isla del Coco, Costa Rica, is one of the five groups of oceanic islands of the Eastern Tropical Pacific (ETP), and is considered one of the most diverse. Since the mid-19th century, it has been the target of a number of ...
Feeding habits of the Pacific bearded brotula Brotula clarkae Hubbs, 1944 (Ophidiidae) along the Pacific coast of Costa Rica, Central America
The present study analyzed the diet composition, ontogenetic shifts and dietary overlap of Brotula clarkae in relation to stage of maturity and sex. Samples were collected from the trawling fishery along the Pacific coast ...
Evaluación de fertilizantes agrícolas en la productividad de la microalga Chlorella sorokiniana
Evaluation of agricultural fertilizers on the productivity of microalgae Chlorella sorokiniana
El objetivo del presente trabajo fue evaluar la productividad de la microalga verde Chlorella sorokiniana UTEX 1230 con fertilizantes foliares usados en la agricultura y la comparación con el medio nutritivo Kolwitz (K3). ...