Abstract This study aims to evaluate the environmental factors determining of the changes in phytoplankton structure in spatial (upper, middle and lower course) and seasonal (dry and rainy period) scales in a eutrophic river (Almada River, northeastern Brazil). In the study period, total accumulated rain...
Biodiversidad,
Brasil,
Clorofila,
Clorofila A,
Diatomeas,
Ecosistema,
Monitoreo del Ambiente/métodos,
Fitoplancton/crecimiento & desarrollo,
Lluvia,
Ríos,
Estaciones del Año,
Análisis Espacio-Temporal,
Clima Tropical
Abstract Biomonitoring is a cheap and effective tool for evaluation of water quality, and infer on the balance of aquatic ecosystems. The benthic macroinvertebrates are bioindicators sensitive to environmental changes, and can assist in detecting and preventing impacts such as organic enrichment and imba...
Biodiversidad,
Chironomidae,
Cíclidos,
Ecosistema,
Monitoreo del Ambiente/métodos,
Monitoreo del Ambiente/estadística & datos numéricos,
Cadena Alimentaria,
Invertebrados,
Oligoquetos,
Densidad de Población,
Estaciones del Año,
Microbiología del Agua,
Calidad del Agua
Abstract This study aimed to model the habitat suitability for an invasive clam Corbicula fluminea in a coastal shallow lagoon in the southern Neotropical region (–30.22, –50.55). The lagoon (19km2, maximum deep 2.5m) was sampled with an Ekman dredge in an orthogonal matrix comprising 84 poin...
Abstract This study evaluated the abundance and spatial-temporal distribution of the shrimp Xiphopenaeus kroyeri in the coastal region of Macaé, state of Rio de Janeiro, southeastern Brazil. Monthly samples were obtained from March 2008 to February 2010 in six stations located in Inner (5, 10 and 15m de...
Abstract:Coral reefs are under intense conditions of stress caused by the anthropogenic activities in coastal areas and the increase of human population. Water effluents from urban and industrial areas carry large amounts of sediments and pollutants affecting corals populations, inducing bioerosion, incr...
Antozoos/anatomía & histología,
Antozoos/química,
Arrecifes de Coral,
Monitoreo del Ambiente,
México,
Microscopía Electrónica de Rastreo,
Valores de Referencia,
Agua de Mar/química,
Espectrometría por Rayos X,
Tungsteno/análisis,
Contaminantes Químicos del Agua/química
Abstract: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 (1984-1987, 49 dates; 2013, 12 dates) of sipunculans, brachiopods and hemichor...
Distribución Animal,
Cordados no Vertebrados/fisiología,
Costa Rica,
Monitoreo del Ambiente/métodos,
Estuarios,
Sedimentos Geológicos,
Invertebrados/fisiología,
Metales/análisis,
Nematodos/fisiología,
Océano Pacífico,
Densidad de Población,
Valores de Referencia,
Estaciones del Año,
Agua de Mar/química,
Análisis Espacio-Temporal,
Especificidad de la Especie,
Espectrofotometría Atómica,
Contaminantes Químicos del Agua/análisis
ResumenLos manglares tienen gran importancia ecológica, económica, riqueza natural y prestan servicios ambientales. No obstante, son amenazados por la sobreexplotación, la contaminación y el cambio de uso de suelo. Costa Rica tiene manglares en las costas pacífica y caribeña. Según algunos estudio...
AbstractPine plantations in the tropics are often employed to recondition eroded slopes from mudslides, as the Pinus caribaea plantation that shields the Universidad Simón Bolívar campus in Caracas (Venezuela). However, mismanagement of this plantation has led to its rapid degradation. The best option ...
AbstractThe use of direct response of animals to environmental challenges by production of biomarkers is a better tool to assess environmental pollution than the conventional methods. This study aimed to measure Glutathione-S-transferase (GST) in earthworms as tools for assessing heavy metal pollution in...
AbstractSince 1983, San Pedro Bay in the Philippines had been reported to be the site of episodic Pyrodinium bahamense var. compressum blooms that caused paralytic shellfish poisoning in its nearby coastal communities. This bay is also subjected to numerous storms; the strongest was super typhoon Haiyan ...
