Search results for ""Author Adam Kovács""

This monograph includes seven chapters, each presenting recent advancements in the field of marine biology. Chapter One describes how the biodiversity of the Mediterranean marine environment has changed due to climate change and species invasions and proposes policy suggestions. Chapter Two discusses an integrated ecotoxicological view on elasmobranch conservation regarding chemical contamination alongside potential ecological outcomes for this group and human impacts derived from elasmobranch consumption. Chapter Three congregates information about the morphological traits of crabs to lay a foundation for a better understanding of taxonomic and phylogenetic studies, ecological studies, and the stock assessment and management of commercially important species. Chapter Four shows how foraminiferal associations are influenced by nutrients and abiotic factors that control the carbonate production in the modern outer shelf of Rio Grande do Norte, in the region of Açu Reefs. Chapter Five describes the first satellite tagging research project in the southern Gulf of Mexico for bottlenose dolphins. Chapter Six investigates the threat posed by cutaneous fibropapillomatosis, a tumor that arises on the skin or internal organs of sea turtles and affects up to 97% of this population. Finally, Chapter Seven discusses the eco-biology, exploitation and social aspects related to the common octopus along the Kerkennah Island in the South Center of the Mediterranean Sea.

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The opening chapter describes the characteristics, challenges and opportunities pertaining to the Strait of Hormuz and reviews the present and future conditions of the marine environment in the region. Next, the authors analyze phytoplankton chlorophyll-a data obtained on 27 oceanographic cruises in the southern Gulf of Mexico between 1979 and 2000. Four cruises were selected to report variations of chlorophyll-a associated with hydrographic conditions (temperature and salinity) in surface waters, one in April 1983 and three in different seasons in 1987. Data on the abundances of >105 cells/L of the non-toxic benthic-planktonic widely distributed ubiquitous pennate diatom Cylindrotheca closterium as a causative agent of harmful algal blooms in the coastal waters of the northern Yucatan Peninsula, with an emphasis on four marinas, are presented in the following chapter. Following this, studies are presented wherein it is shown that substrate type, species diversity, stem and root density, predator, seasons, and mate display activity affect the zonal and spatial distribution as well as the diameter of a burrow in semi-terrestrial crabs. The authors go on to highlight the applications of the most active compounds present in marine macroalgae known as polyphenols, as well as their isolation using green extraction methods. Their bioactive properties are reviewed and their potential for health improvement is evaluated. The penultimate chapter focuses on tributyltin, a toxic compound with broad-spectrum activity toward diverse marine species, and how it affects marine environments. The closing chapter examines the several molecular methods which have been evaluated for species identification, phylogenetic analyses, and determining the population structure of Thunnus.

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