46 research outputs found

    Considerations and guidelines for import and export of ornithological samples from tropical countries

    Get PDF
    „BiodiversitĂ€t“ wird zunehmend als wichtige Ressource erkannt. Schutz, Zugang und nachhaltige Nutzung der BiodiversitĂ€t (genetische Ressourcen, Arten, Proben jeglicher Couleur) werden inzwischen auf verschiedenen politischen Ebenen verhandelt, was in international verbindlichen Rahmenwerken verankert wird. VerstĂ€ndnis von und Bewusstsein ĂŒber Genehmigungen zum Import und Export biologischer Proben ist von zunehmender Bedeutung fĂŒr Biologen, um Forschungsprojekte legal und zeitnah durchfĂŒhren zu können. Nichtsdestotrotz werden nach wie vor biologische Proben fleißig im- und exportiert, oft genug auch unter VernachlĂ€ssigung der Genehmigungspflicht aufgrund lokaler, nationaler und internationaler Übereinkommen, Gesetzen und Verordnungen bzw. auch schlichtweg mit gesetzeswidrigem Verhalten oder Verpackungen beim Transport. Daraus entstehende Schwierigkeiten können ernsthafte Probleme wĂ€hrend der Feldarbeit bedeuten, aber auch den Export verzögern oder zum Verlust von Proben fĂŒhren. Intensive rechtzeitige (Vorab-) Information bezĂŒglich gesetzlicher Voraussetzungen zum Import, Export und Transport biologischer Proben kann das Problempotenzial stark vermindern oder ganz beseitigen. Wir haben vier wichtige Faktoren identifiziert und fassen Informationen zu diesen Bereichen zusammen, die bei Beachtung die Genehmigungen und den Import in die EG vereinfachen können: (1) gute persönliche (auf gegenseitigem Vertrauen beruhende) Kontakte im Ursprungsland; (2) VerstĂ€ndnis und Einhaltung von allen relevanten Gesetzen und Verordnungen; (3) Zugang zu Informationen bezĂŒglich Genehmigungen, Verordnungen und Informationsverbreitung innerhalb der Forschergemeinschaft; und (4) Zugang zu einheitlichen und aktuellen Richtlinien zu Genehmigungen, Verordnungen und Gesetzen. Ziel dieser Arbeit ist es, in Zukunft die Forschung von einigen zentralen Problemen im Im- und Export zu befreien und Probleme und MissverstĂ€ndnisse zu reduzieren.‘Biodiversity’ is increasingly perceived as an important resource. Conservation, access and sustainable use of biodiversity (genetic resources, species, samples) are negotiated at political levels, resulting in an internationally binding legal framework. Understanding and awareness of export and import permits for biological samples is increasingly important for biologists to perform research projects legally and timely. Nevertheless, some biologists still export and import biological samples in disregard of or non-compliant with national and international legislation, conventions, and regulations. Resulting difficulties may not only cause serious problems during field work, but may also delay the export, import or exchange of samples. Comprehensive a priori information regarding legal requirements helps to avoid or at least diminish potential problems. We identified four major factors facilitating export/import permits: (1) good personal (mutually trusted) contacts in the country of origin, (2) understanding and compliance with all relevant laws and regulations; (3) access to information regarding knowledge on permits, regulations and laws including their circulation within the researcher communities and (4) access to consistent and up to date regulations and guidelines. We provide information on key issues to assist research teams trying to reduce problems and misunderstandings

    Microanatomy of the trophosome region of Paracatenula cf. polyhymnia (Catenulida, Platyhelminthes) and its intracellular symbionts

    Get PDF
    Marine catenulid platyhelminths of the genus Paracatenula lack mouth, pharynx and gut. They live in a symbiosis with intracellular bacteria which are restricted to the body region posterior to the brain. The symbiont-housing cells (bacteriocytes) collectively form the trophosome tissue, which functionally replaces the digestive tract. It constitutes the largest part of the body and is the most important synapomorphy of this group. While some other features of the Paracatenula anatomy have already been analyzed, an in-depth analysis of the trophosome region was missing. Here, we identify and characterize the composition of the trophosome and its surrounding tissue by analyzing series of ultra-thin cross-sections of the species Paracatenula cf. polyhymnia. For the first time, a protonephridium is detected in a Paracatenula species, but it is morphologically reduced and most likely not functional. Cells containing needle-like inclusions in the reference species Paracatenula polyhymnia Sterrer and Rieger, 1974 were thought to be sperm, and the inclusions interpreted as the sperm nucleus. Our analysis of similar cells and their inclusions by EDX and Raman microspectroscopy documents an inorganic spicule consisting of a unique magnesium–phosphate compound. Furthermore, we identify the neoblast stem cells located underneath the epidermis. Except for the modifications due to the symbiotic lifestyle and the enigmatic spicule cells, the organization of Paracatenula cf. polyhymnia conforms to that of the Catenulida in all studied aspects. Therefore, this species represents an excellent model system for further studies of host adaptation to an obligate symbiotic lifestyle

    Biodiversity of the Deep-Sea Continental Margin Bordering the Gulf of Maine (NW Atlantic): Relationships among Sub-Regions and to Shelf Systems

    Get PDF
    Background: In contrast to the well-studied continental shelf region of the Gulf of Maine, fundamental questions regarding the diversity, distribution, and abundance of species living in deep-sea habitats along the adjacent continental margin remain unanswered. Lack of such knowledge precludes a greater understanding of the Gulf of Maine ecosystem and limits development of alternatives for conservation and management. Methodology/Principal Findings: We use data from the published literature, unpublished studies, museum records and online sources, to: (1) assess the current state of knowledge of species diversity in the deep-sea habitats adjacent to the Gulf of Maine (39–43uN, 63–71uW, 150–3000 m depth); (2) compare patterns of taxonomic diversity and distribution of megafaunal and macrofaunal species among six distinct sub-regions and to the continental shelf; and (3) estimate the amount of unknown diversity in the region. Known diversity for the deep-sea region is 1,671 species; most are narrowly distributed and known to occur within only one sub-region. The number of species varies by sub-region and is directly related to sampling effort occurring within each. Fishes, corals, decapod crustaceans, molluscs, and echinoderms are relatively well known, while most other taxonomic groups are poorly known. Taxonomic diversity decreases with increasing distance from the continental shelf and with changes in benthic topography. Low similarity in faunal composition suggests the deep-sea region harbours faunal communities distinct from those of the continental shelf. Non-parametric estimators of species richness suggest a minimum of 50% of the deep-sea species inventory remains to be discovered. Conclusions/Significance: The current state of knowledge of biodiversity in this deep-sea region is rudimentary. Our ability to answer questions is hampered by a lack of sufficient data for many taxonomic groups, which is constrained by sampling biases, life-history characteristics of target species, and the lack of trained taxonomists

    Catching up with Archives – Disaster Preparedness and the Protection of Cultural Heritage in Berlin Museums

    No full text
    Cultural property can be lost in an instant - when disaster strikes, museum objects, archival material and other heritage items are in high danger of being damaged or lost in great numbers. To mitigate the effects of fire, flooding, earthquakes or even war, preparation for these incidents are needed during "times of peace", to use the terms of the Hague Convention. For museums and other institutions holding cultural property, this results in an obligation to run a risk assessment, to establish a disaster plan for their collections, and to link up with the local fire department or emergency services unit in preparation for the next emergency. Nevertheless, every hand is needed to recover objects from an institution after it was affected by a disaster in order to provide initial treatment as soon as possible. This necessity resulted, as in other countries, in the formation of networks of mutual assistance in Germany. In 1997, following the Oder-River flooding in the state of Brandenburg, the archives of Berlin and Brandenburg came together to initiate such a network. This, however, is exclusive to archives and has not opened up to museums. Berlin museums, on the other hand, were slower in forming such a network. Being a city with more than 175 museums and a history full of smaller and larger disasters not only to cultural institutions, it is hard to conceive why this notion did not gain ground earlier. It was only after a working group under the heads of administration in the Berlin Museum Association had been established that a network for museums was initiated and a co-operation agreement was drafted. This agreement is the basis for a new network of museums of various sizes and types, with the Museum fĂŒr Naturkunde as one of the founding partners. This presentation explores disaster preparedness activities at the Museum fĂŒr Naturkunde, with its 30 million objects, as well as the work of the new museum network for disaster preparedness

    Catching up with Archives – Disaster Preparedness and the Protection of Cultural Heritage in Berlin Museums

    No full text
    Cultural property can be lost in an instant - when disaster strikes, museum objects, archival material and other heritage items are in high danger of being damaged or lost in great numbers. To mitigate the effects of fire, flooding, earthquakes or even war, preparation for these incidents are needed during "times of peace", to use the terms of the Hague Convention. For museums and other institutions holding cultural property, this results in an obligation to run a risk assessment, to establish a disaster plan for their collections, and to link up with the local fire department or emergency services unit in preparation for the next emergency. Nevertheless, every hand is needed to recover objects from an institution after it was affected by a disaster in order to provide initial treatment as soon as possible. This necessity resulted, as in other countries, in the formation of networks of mutual assistance in Germany. In 1997, following the Oder-River flooding in the state of Brandenburg, the archives of Berlin and Brandenburg came together to initiate such a network. This, however, is exclusive to archives and has not opened up to museums. Berlin museums, on the other hand, were slower in forming such a network. Being a city with more than 175 museums and a history full of smaller and larger disasters not only to cultural institutions, it is hard to conceive why this notion did not gain ground earlier. It was only after a working group under the heads of administration in the Berlin Museum Association had been established that a network for museums was initiated and a co-operation agreement was drafted. This agreement is the basis for a new network of museums of various sizes and types, with the Museum fĂŒr Naturkunde as one of the founding partners. This presentation explores disaster preparedness activities at the Museum fĂŒr Naturkunde, with its 30 million objects, as well as the work of the new museum network for disaster preparedness

    The Role of Unification in Explanations of Facts

    Get PDF
    In the literature on scientific explanation, there is a classical distinction between explanations of facts and explanations of laws. This paper is about explanations of facts. Our aim is to analyse the role of unification in explanations of this kind. We discuss five positions with respect to this role, argue for two of them and refute the three others
    corecore