In this paper we describe a record of planktonic foraminiferal relative abundance changes in Core T89-40 retrieved from the Walvis Ridge, SE Atlantic. The planktonic foraminiferal relative abundance changes reflect past (sub)surface water hydrography during the Mid-Pleistocene Transition. Statistical analysis shows that most variability in the planktonic foraminiferal relative abundance record ...

Our study provides a checklist of 36 crustacean decapods from the Mexican tropical Pacific coastline. Most of the species were previously recorded from coral communities in the Gulf of California. Data were obtained by visual censuses of coral communities and some specimens were collected by extractions of coral branches (approximately eight liters of coral volume). We found new geographic reco...

BACTERIOPHAGE IN NATURAL WATERS AND IN MAN, IN CALCUTTA DURING THE YEAR 1930. By C. L. PASRICHA, m.a., m.b., B.chir., m.r.c.s., l.r.c.p., CAPTAIN, I.M.S., Military Assistant Surgeon A. J. de MONTE, i.mj)., and S. K. GUPTA, M.B., D.T.M. (From the Bowel Diseases Research Department, Calcutta School of Tropical Medicine and Hygiene.) Samples of waters from the river Hooghly and from certain tanks ...

Is it possible to derive accurately Total Suspended Matter concentration or its proxy, turbidity, from remote sensing data in tropical coastal lagoon waters? To investigate this question, hyperspectral remote sensing reflectance, turbidity and chlorophyll pigment concentration were measured in three coral reef lagoons. The three sites enabled us to get data over very diverse environments: oligo...

Pico and nanoplankton communities from the Southwest Atlantic Ocean along the Brazilian Bight are poorly described. The hydrography in this region is dominated by a complex system of layered water masses, which includes the warm and oligotrophic Tropical Water (TW), the cold and nutrient rich South Atlantic Central Water (SACW) and the Coastal Water (CW), which have highly variable properties. ...

The genus Histioneis (=Parahistioneis) contains an excessive number of poorly described species, often based on the observation of a single specimen and ignoring the intraspecific variability. In order to investigate the validity of the species and to suggest synonyms, the original illustrations of all known species of Histioneis are reproduced and grouped based on the morphological similarity....

Despite considerable increased pesticide use over the past decades, little research has been done into their fate and effects in surface waters in tropical regions. In the present review, possible differences in response between temperate and tropical freshwaters to pesticide stress are discussed. Three underlying mechanisms for these differences are distinguished: (1) climate related parameter...

The world's second largest fish, the basking shark (Cetorhinus maximus), is broadly distributed in boreal to warm temperate latitudes of the Atlantic and Pacific oceans from shallow coastal waters to the open ocean. Previous satellite archival tagging in the North Atlantic has shown that basking sharks move seasonally, are often associated with productive frontal zones, and may make occasional ...

A new family of soft corals (Anthozoa, Octocorallia, Alcyonacea) from the aphotic tropical eastern Pacific waters revealed by integrative taxonomy Odalisca Breedy a b , Leen P. van Ofwegen c & Sergio Vargas d a Centro de Investigación en Ciencias del Mar y Limnología, and Centro de Investigación en Estructuras Microscópicas, Universidad de Costa Rica, 11501-2060 San José, Costa Rica b Smithsoni...

Mesophilic ammonia-oxidizing Archaea (AOA) are abundant in a diverse range of marine environments, including the deep ocean, as revealed by the quantification of the archaeal amoA gene encoding the alpha-subunit of the ammonia monooxygenase. Using two different amoA primer sets, two distinct ecotypes of marine Crenarchaeota Group I (MCGI) were detected in the waters of the tropical Atlantic and...