Danish Oceanographical expeditions 1908-1910 to the Mediterranean and adjacent seas-PelagicPolychaetes

Study Extent

Collections are from the Mediterranean and adjacent parts of Atlantic Ocean.

Sampling

The majority of the catches were made with “Petersen’s Young-fish Trawl” mostly with a diameter of 200cm and 330cm and stramin nets with dimeters of 100, 150 and 200cm: the fishing parts of these consist of stramin, a coarse canvas with abt 20 threads to 3cm. A few samples containing Polychaeta were taken with other apparatus, viz.5 samples with ring-trawl 130cm, 200cm and 300cm in diameter; 2 samples with open conical silk-net 100cm in diameter ;one with Nansen’s closing net, 50 cm in diameter and finally one with rectangular dredge opening 27x117 cm

Quality Control

The dataset was digitized manually from scanned documents. Original names regarding taxonomy and sampling location were kept as a reference. At the same time taxon names were cross-checked against the World Register of Marine Species (WoRMS); while the original sampling coordinates were plotted using Google Earth in order to double check that they are located in the sea. All data were checked for inconsistencies, both for the range of values, but also compared to other datasets from the same series, collected at the same station. Any problematic records were recorded in a remarks field in the data.

Method steps

1. Data were digitized by hand, then quality controlled, and published through the MedOBIS IPT installation.

Alciopidae, Amphinomidae, Lopadorrhynchidae, Polynoidae, Typhloscolecidae, Lopadorhynchidae

1. Polynoidae
   rank: family
2. Phyllodocidae
   rank: family
3. Typhloscolecidae
   rank: family
4. Alciopidae
   rank: family
5. Amphinomidae
   rank: family
6. Lopadorrhynchidae
   rank: family

Mediterranean and adjacent waters, with some stations from other expeditions from the tropical Atlantic Ocean.