Landings of European lobster (Homarus gammarus) and edible crab (Cancer pagurus) from 1615 to 2009, Helgoland, North Sea
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2011
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| _version_ | 1867170456038014976 |
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| author | Schmalenbach, Isabel Mehrtens, Folke Janke, Michael Buchholz, Friedrich |
| author_facet | Schmalenbach, Isabel Mehrtens, Folke Janke, Michael Buchholz, Friedrich |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | From 2000 to 2005 about 5400 one-year-old hatchery-reared lobsters (Homarus gammarus) were tagged and released at the rocky island of Helgoland, North Sea. To date, 1-8% of the different release cohorts were recaptured in the field and 8-19% of these lobsters were recaptured from the semi-open area of the outer harbour. The recaptured lobsters indicated good development and growth conditions. The smallest berried females caught were 83 mm carapace length and 4 years old. The proportion of cultured lobsters to all measured lobsters captured around the island was 3-8% in the years 2007-2009. The population size of two cohorts was assessed using the Lincoln-Peterson method and the estimated survival rate averaged 30% and 40%. Minimum landing size of cultured lobsters was reached after 4-7 years. Cultured lobsters showed strong fidelity to their release sites, and thus remained around the island of Helgoland. A basis has been laid to enhance this endangered lobster population by means of a large scale restocking programme. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_727206 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Landings of European lobster (Homarus gammarus) and edible crab (Cancer pagurus) from 1615 to 2009, Helgoland, North Sea Schmalenbach, Isabel Mehrtens, Folke Janke, Michael Buchholz, Friedrich BAH; Helgoland_lobster_1615-2009; Helgoland, North Sea; LTER_Benthos; Macrobenthic long-term series in the German Bight; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland) From 2000 to 2005 about 5400 one-year-old hatchery-reared lobsters (Homarus gammarus) were tagged and released at the rocky island of Helgoland, North Sea. To date, 1-8% of the different release cohorts were recaptured in the field and 8-19% of these lobsters were recaptured from the semi-open area of the outer harbour. The recaptured lobsters indicated good development and growth conditions. The smallest berried females caught were 83 mm carapace length and 4 years old. The proportion of cultured lobsters to all measured lobsters captured around the island was 3-8% in the years 2007-2009. The population size of two cohorts was assessed using the Lincoln-Peterson method and the estimated survival rate averaged 30% and 40%. Minimum landing size of cultured lobsters was reached after 4-7 years. Cultured lobsters showed strong fidelity to their release sites, and thus remained around the island of Helgoland. A basis has been laid to enhance this endangered lobster population by means of a large scale restocking programme. |
| title | Landings of European lobster (Homarus gammarus) and edible crab (Cancer pagurus) from 1615 to 2009, Helgoland, North Sea |
| topic | BAH; Helgoland_lobster_1615-2009; Helgoland, North Sea; LTER_Benthos; Macrobenthic long-term series in the German Bight; Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland) |
| url | https://doi.org/10.1594/PANGAEA.727206 |