This study focused on the influence of local-scale environmental factors on key metrics of fish community structure and function at Guanabara Bay, an estuarine system that differs from all other south-western Atlantic estuaries due to the influence of an annual low-intensity upwelling event during late spring and summer, between November and March, when a warm rainy climate prevails. The spatia...

Managing oil spill residues washing onto sandy beaches is a common worldwide environmental problem. In this study, we have analyzed the first-arrival oil spill residues collected from two Gulf of Mexico (GOM) beach systems following two recent oil spills: the 2014 Galveston Bay (GB) oil spill, and the 2010 Deepwater Horizon (DWH) oil spill. This is the first study to provide field observations ...

the antifungal potential of essential oils of thyme (thymus vulgaris l.), rosemary (rosmarinus officinalis l.), and laurel (laurus nobilis l.) was determined. to establish this antifungal potential, two molds related to feed spoilage, namely, aspergillus flavus and aspergillus parasiticus, were selected. the agar dilution method was employed for the determination of antifungal activities. the i...

Aiming to investigate the deposition of pollen grains and spores in Guanabara Bay, Rio de Janeiro State, 61 surface sediment samples were analyzed. The results showed that the current deposition of palynomorphs in surface sediments of Guanabara Bay represents the regional vegetation of this hydrographic basin. The differential distribution of palynomorphs followed a pattern influenced by bathym...

The Larsemann Hills (69°24'5, 76°20'E), situated on the Ingrid Christensen Coast of Princess Elizabeth Land, Antarctica, consist of a series oflow-Iying, rocky peninsulas and islands on the southern shore of Prydz Bay. This area (fig. 1), which extends over 200 km2, is ice-free during the summer and bestrewn with more than 150 freshwater lakes. In the 1990/91 and 1991192 austral summers, the op...

Abeam-A~osphe~c aerosols were measured in August 1983 on Allegheny Mountain and Laurel Hill in southwestern Pennsyivania. Ambient humidity was observed to influence the coarse to fine particle ratios as determined by dichotomous samplers. This influence is evident in the particle mass and in its component chemical species. The sampling run with the most pronounced mass shift resulted in an appa...

A suite of 36 surface sediment samples, taken between 10 and 100 m water depth in Mejillones Bay (Northern Chile), were analyzed for mineralogy, grain size, total organic carbon, Al, and heavy metal content (Cd, Zn, Ni, Mn, V, Mo). Quartz and feldspars were the main lithogenic minerals and carbonate the predominant biogenic mineral. Sediments were fine sands in the shallow zone and organic silt...

The writers have recently received from Mr. Alan Owston, of Yokohama, well known as a shipmaster and as a collector in natural history, a very remarkable series of fishes obtained on long lines in the depths of Sagami bay and Siiruga bay, Japan. The present paper contains notes on these species, together with field notes of Mr. Owston. The specimen of Mitsukurina otvstoni and some of the others...