Hellenic Centre for Marine Research
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Polytraits is a database on biological traits of bristle worms (Polychaeta). The database contains 47 different traits describing the morphological, behavioural, reproductive and larval features as well as the environmental affinities of a taxon. Each trait has several sub-categories, so-called modalities. In total, 252 modalities are covered. The expression of a trait in a taxon is coded in the database by declaring each modality as present or absent. Each assignment of a modality (and its presence/absence value) to a taxon is connected to a literature reference. This assignment is mandatory, no data can be entered without specifying the source of the data; however, to capture undocumented knowledge, the option "Expert's opinion" can be specified. Additionally, most records are accompanied by the quotation of the exact literature passage which has led to the coding of the information. Developed by: The project was initially started as an in-house project of the Institute of Marine Biology, Biotechnology and Aquaculture of the Hellenic Centre for Marine Research. Traits were initially collected for an ecological analysis of polychaetes in Mediterranean lagoons, but since then the database has been continuously expanded to provide data for other analyses as well. Currently, Polytraits is being maintained by the Institute for Marine Biology, Biotechnology and Aquaculture of the Hellenic Centre for Marine Research and is supported by the Greek LifeWatch infrastructure.
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The Mediterranean Ocean Biodiversity Information System (MedOBIS) is a distributed system that allows you to search multiple datasets simultaneously for biogeographic information on marine organisms.
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A dataset of Polychaeta collected from 4 major ports of Greece: Pireaus, Patra, Heraklion, Rhodes during the period 2020-2021. For this purpose, a netted frame and a suction sampler were used to sample the benthic fauna on artificial reefs (of concrete) and floating platforms. This work is part of the project AlienPorts.
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This dataset contains occurrence records of subtidal polychaetes (Annelida) from two midlittoral rocky shore sampling sites in northern Crete (Greece).
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Meiofaunal community responses to anthropogenic disturbance in Heraklion harbour (Crete, Greece, Eastern Med.). The dataset contains data on the community structure of nematodes and copepods at seventeen stations in relation with environmental variables
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The nematode community structure from Malia Bay (north Crete, Aegean Sea) was investigated in order to provide a baseline for the benthic environment prior to the initiation of a domestic sewage outfall into the Bay.
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Samples were collected in order to study the nematode communities from the eulittoral zone of a sandy beach on Crete (Greece, eastern Mediterranean) in relation to the physical parameters of the sediment and the degree of exposure to wave action.
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Meiofaunal communities from the bathyal ecosystem of the Aegean Sea (Eastern Mediterranean). The dataset contains data on the community structure of nematodes from 7 stations (depth range 153 to 1772 m) which were sampled twice (September 1997 and March 1
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This is a historical dataset that was published in 1939 by Chas.H. O’Donoghue, D.Sc. & Dora de Watteville,M.A and concerns the collection of es of Bryozoa collected during the floristical and faunistical survey of Adolf Steuer on the coasts near Alexandria mainly with the vessel “El Hoot”. The digitization of this dataset was done by LifewatchGreece team.Dates have been reported via the stations which have been digitized on the preliminary report(http://ipt.medobis.eu/resource?r=egyptexpeditionpreliminaryrepor).
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A historical dataset, by Edward Forbes, Professor of Botany in King's College, London. This digitised report, requested by the British Association, refers to the Mollusca and Radiata inhabiting the Aegean and the Red Sea. The data upon which this report is founded have been entirely derived from a voyage of 18 months to the Aegean. The calculations have been based upon more than 100 fully recorded dredging operations in various depths and in many localities. The digitization process concerns the Appendix of the Report, which refers to the Examples of Dredging Papers, selected in order to show the associations of species in several regions. The numerous dredging operations on which this Report is founded were all registered in a similar manner.