969 resultados para Azores Archipelago


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Dissertação de Mestrado em Psicologia da Educação, especialidade em Contextos Comunitários.

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Dissertação de Mestrado em Engenharia do Ambiente.

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Dissertação de Mestrado em Engenharia e Gestão de Sistemas de Água.

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Dissertação de Mestrado, Engenharia Zootécnica (Zootecnia), 27 de abril de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Gestão e Conservação da Natureza, 18 de Maio de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Gestão e Conservação da Natureza, 15 de Maio de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Mestrado em Ciências Biomédicas, 8 de Maio de 2015, Universidade dos Açores.

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Mestrado (PES II), Educação Pré-escolar e Ensino do 1.º Ciclo do Ensino Básico, 20 de Maio de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Ciências Sociais, 12 de Março de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Geologia do Ambiente e Sociedade, 8 de Maio de 2015, Universidade dos Açores.

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A sub adult Caretta caretta was found on the 23rd August, 2014 ca. 16 nautical miles south off S. Miguel Island, Azores (Northeast Atlantic), with a large pelagic trawl hook inside its mouth. The individual was kept in a basin of sea water and sent by boat to Terceira Island following instructions by the Azores Regional Government via the Environmental Authority in order to be examined by the author and, if possible, undergo the necessary hook removal procedures. In this note, we describe the surgical procedures and how the turtle was evaluated both pre- and post-surgery.

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Dissertação de Mestrado, Biodiversidade e Biotecnologia Vegetal, 17 de Março de 2015, Universidade dos Açores.

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Dissertação de Mestrado, Engenharia Zootécnica, 24 de Abril de 2015, Universidade dos Açores.

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Patellid limpets are ecologically important keystone grazers having a long history of overexploitation in the Macaronesian Archipelagos (NE Atlantic islands), where some species, such as Patella aspera, are under serious risk.[1, 2] Patella aspera is a protandric sequential hermaphrodite species with external fertilization, in which individuals start off as males but may undergo a sex reversal with age.[3] Hence, exploitation tends to focus on the larger females in the population as larger limpets (predominantly females) are selectively removed. Despite conservation legislation in Canaries, Madeira and Azores, limpets are under severe pressure and few individuals survive long enough to become females, a phenomenon that severely restricts the effective population size.[4] New conservation actions for the protection and sustainable use of limpets in Macaronesian Archipelagos are urgently needed and should be based on a multidisciplinary framework based on knowledge of the population dynamics and connectivity of this species.

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Ciguatera fish poisoning (CFP) is a syndrome caused by the ingestion of fish contaminated with Ciguatoxins (CTXs). These phycotoxins are produced mainly by dinoflagellates that belong to the genus Gambierdiscus that are transformed in more toxic forms in predatory fish guts, and are more present in the Indo-Pacific and Caribbean areas. It is estimated that CFP causes per year more than 10,000 intoxications worldwide. With the rise of water temperature and anthropogenic intervention, it is important to study the prevalence of CFP in more temperate waters. Through inter- and subtidal sampling, 22 species of organisms were collected, in Madeira and Azores archipelagos and in the northwestern Moroccan coast, during September of 2012 and June and July of 2013. A total of 94 samples of 22 different species of bivalves, gastropods, echinoderms and crustaceans where analyzed by Ultra Performance Liquid Chromatography-Mass Spectometry-Ion Trap-Time of Flight (UPLC-MS-IT-TOF) and Ultra Performance Chromatography- Mass Spectrometry (UPLC-MS). Our main aim was to detect new vectors and ascertain if there were some geographical differences. We detected for the first time putative CTXs in echinoderms, in two starfish species—M. glacialis and O. ophidianus. We detected differences regarding uptake values by organisms and geographical location. Toxin amounts were significant, showing the importance and the need for continuity of these studies to gain more knowledge about the prevalence of these toxins, in order to better access human health risk. In addition, we suggest monitoring of these toxins should be extended to other vectors, starfish being a good alternative for protecting and accessing human health risk.