Benthic Boundary Layer (BBL) macrofauna of the continental shelf of Heraklion Bay (2001)

Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 7 enregistrements.

1 tableurs de données dextension existent également. Un enregistrement dextension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre denregistrements dans chaque tableur de données dextension est illustré ci-dessous.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Christ M L, Koumpaki E, Maidanou M, Miletic M, Poursanidis D, Faulwetter S, Koutsoubas D, Arvanitidis C, Dounas C, Koulouri P (2026). Benthic Boundary Layer (BBL) macrofauna of the continental shelf of Heraklion Bay (2001). Version 1.0. Hellenic Center for Marine Research. Samplingevent dataset. https://ipt.medobis.eu/resource?r=bbl-her&v=1.0

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Hellenic Center for Marine Research. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource na pas été enregistrée sur le portail GBIF

Mots-clé

BBL macrofauna; seasonal trends; bathymetric changes; continental shelf; Mediterranean

Contacts

Couverture géographique

A study area of four different stations (St. 1 50, m; St. 2, 100 m; St. 3, 200 m; St. 4, 300 m isobaths) was selected. St. 1, Lat. 35.362000, Lon. 25.1000667; St. 2, Lat. 35.382883, Lon. 25.099350; St. 3, Lat. 35.422783, Lon. 25.094817; St. 4, Lat. 35.444033, Lon. 25.093717).

Couverture taxonomique

This dataset presents the identified hyperbenthic, (epi-)benthic and planktonic macrofaunal species belonging to the taxonomic groups of Crustacea, Polychaeta and Mollusca and their abundances in the different sampling periods and stations.

Couverture temporelle

Données sur le projet

This work was carried out in the framework of the project "Development of a new method for the quantitative measurement of the effects of otter trawling on benthic nutrient fluxes and sediment biogeochemistry" financed by the European Commission (DG. XIV, Studies for the support of CFP).

Les personnes impliquées dans le projet:

Méthodes déchantillonnage

As sampling apparatus, a modified hyperbenthic sledge Towed Trawl Simulator Sledge version 2, TTSS2) described in Koulouri et al. (2003), was used simulating the artificial resuspension of the sediment surface (total surface area of 0.45 m2, plankton nets with 0.5 mm mesh size). The sledge was towed from the research vessel “PHILIA” of the Hellenic Centre for Marine Research at a speed of two knots and with a length of wire paid out to depth ratio of 2:1. At station 1 (50 m isobath), three 50 m length tows were performed, while at each of the stations 2 (100 m isobath), 3 (200 m isobath) and 4 (300 m isobath), one 200 m length tow was carried out. Travelling distance of the sledge, while in contact with the seabed, was measured by an odometer and the whole process was monitored by a video-camera, both attached to the apparatus. On board, the samples were preserved in 10% formalin and sorted under a magnifying glass back in the laboratory. Furthermore, the macrofaunal organisms were identified to the lowest possible taxonomic level and counted using a stereoscope and a microscope.

Description des étapes de la méthode:

1. 1. Two field surveys were carried out in early spring and early autumn. During daylight hours, three tows with 50 m length were performed at station 1 and one tow of 200 m length at stations 2,3 and 4. St. 4 was only sampled in early autumn. Samples were fixed in 10% formalin after collection. 2. The macrofauna was sorted out, classified to the major taxa and counted. Furthermore, the taxonomic groups (Crustacea, Polychaeta ,Mollusca) were identified to the lowest possible taxon level and counted. Macrofaunal densities from the three replicates from station 1 were averaged. Then, all densities estimated in the samples were standardized to the number of individuals per 100 m2 of sediment surface. 3. The data were standardized according to the FAIR principles (Findable, Accessible, Interoperable and Reusable) (Wilkinson MD. et al. 2016). To secure interoperability, the dataset was formatted according to Darwin Core Archive (Wieczorek et al. 2012). For scientific valid names, the World Register of Marine Species with its Taxon Match Tool (WoRMS Editorial Board 2026) was used and the additional measurements and associated facts were standardized with controlled terms from the NERC Vocabulary Server, enhancing interoperability across marine data repositories (BODC - British Oceanographic Data Centre 2026). In the end the dataset was tested using the LifeWatch & EMODnet Biology Quality Control tool (Perez et al. 2024).

Données de collection

Métadonnées additionnelles