The present study aimed to analyze the structure and the temporal variation of the phytoplankton of Ajuruteua beach (Bragança, Pará) and to investigate the influence of environmental variables on the dynamics of this community to provide a basis about the trophic state of this environment. Biological, hydrological and hydrodynamic samplings were performed during a nyctemeral cycle in the months...

Palynology is the study of microfossils composed of highly resistant organic matter called palynomorphs. In the sediments of neritic environments, palynomorphs may include cysts of dinoflagellates, phycoma of prasinophytes, organic linings of benthic foraminifers and thecamoebians, in addition to inputs from the terrestrial vegetation (pollen grains and spores) or the freshwater biota (chloroco...

A geological and speleological investigation was conducted in the famous Blue Cave (Modra špilja) Monk Seal (Medvidina on Biševo Island (Croatia) to promote island’s geoheritage through new Visitor Centre. The island is mainly composed of Cretaceous Paleogene neritic carbonates, which form bedrock, whereas parts are covered with thin Quaternary sediments. caves small dimensions a simple layout,...

Indonesia is a maritime country with abundant fishery and marine products. Indonesian products in 2015 reached 14.79 tonnes. Tuna (Euthynnus affinis) one of the most important pelagic fish species found Indo-Pacific waters living neritic area. Its geographical distribution includes Indian Ocean Pacific Ocean. The results ALT test on tuna obtained variety colony counts. This research uses descri...

We investigated the trophic structure and habitat use of ten cetacean species occurring in oceanic waters western South Atlantic using naturally-occurring stable isotopes. analysed ?15N individual amino acids (AA) to estimate position (TP) evaluate spatial differences baseline (source AAs). adjusted bulk-skin ?13C for effect level their estimated TPs, obtaining ?13CAdjusted ?15NAdjusted, respec...

The mid-Cretaceous (Albian and Cenomanian, 113–93.9 Myr) marked a transformative interval of shark evolution during which lamniforms (mackerel sharks) diversified as dominant marine predators. Yet, their radiation dynamics relative to major biotic turnovers delimiting the Albian–Cenomanian Cenomanian–Turonian boundaries are incompletely understood. Here, we use high-resolution dental fossil rec...