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  • 1
    Electronic Resource
    Electronic Resource
    Behavioural and morphological differences between lake and river populations of Salaria fluviatilis (2003)
    Oxford, UK : Blackwell Science Ltd
    Journal of fish biology 63 (2003), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Three populations (one from a river and two from lakes) of Salaria fluviatilis, the only exclusively freshwater representative of the Blenniidae, showed significant differences in reproductive behaviour and morphology. Breeding males and females were significantly larger at maturity in the river than the two lake populations. The two lake populations, however, showed the greatest degree of morphological difference, the river population being intermediate. The mating system of each population could be described as resource-based and promiscuous with parasitic ‘sneaker’ males that released sperm in the nests of other males. During spawning, males from the river population released sperm significantly more often than the lake populations. This was paralleled by a greater investment in sperm as measured by relative testis mass in the river population. This was interpreted as the need to counteract the loss of sperm during fertilization as a result of the strong flow in the river. Thus some of the patterns of trait variance fitted predictions of adaptations. Other traits, however, varied randomly across populations suggesting change through genetic drift.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1095-8649.2003.00159.x
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Estimating adhesive seed-dispersal distances: field experiments and correlated random walks (2005)
    Wiley
    Details
    Publication Date: 2005-06-01
    Print ISSN: 0269-8463
    Electronic ISSN: 1365-2435
    Topics: Biology
    Published by Wiley on behalf of British Ecological Society.
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    PAPER CURRENT
  • 3
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    Marine fauna of hard substrata of the Cleaver bank and Dogger bank (2013)
    In:  Nederlandse Faunistische Mededelingen (0169-2453) vol.41 (2013) p.69
    Details
    Publication Date: 2015-12-09
    Description: As most of the sea bottom in the Dutch part of the North Sea consists of sand, marine fauna that live in association with hard substrates are rarely monitored. We report here on the results of a species inventory in June 2011 done by scuba-diving while focusing on a wreck on the Dogger Bank and on rocky bottoms on the Cleaver Bank. This resulted in various new records of species for the Dutch part of the North Sea. This result appeared for a large part linked to the added value of monitoring with scuba-divers. It is therefore concluded that scuba-divers should be used in addition to the more traditional monitoring methods in which dredges and grabs are used, if one aims at getting an accurate view of the biodiversity present in marine regions like the North Sea.
    Keywords: biodiversity ; hard substrata ; Netherlands ; marine ; scuba-diving ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 4
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    Benthic communities on hard substrates within the first Dutch offshore wind farm (OWEZ) (2013)
    In:  Nederlandse Faunistische Mededelingen (0169-2453) vol.41 (2013) p.59
    Details
    Publication Date: 2015-12-09
    Description: Five years after the commissioning of the offshore wind farm Egmond aan Zee, the monopiles and the rocks of the scour protection layers were covered by a wide variety of marine organisms. This paper describes the results of qualitative and quantitative assessments carried out in 2008 and 2011. The assessments were based on video footage, pictures and samples collected by divers at three different wind turbines. The ecological relevance of identified taxa is also discussed.
    Keywords: offshore wind farms ; Netherlands ; biodiversity ; benthic zone ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 5
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    Ecological relevance of shipwrecks in the North Sea (2013)
    In:  Nederlandse Faunistische Mededelingen (0169-2453) vol.41 (2013) p.49
    Details
    Publication Date: 2015-12-09
    Description: This paper reports on observations made during wreck dive expeditions in 2010-2012, in order to investigate the ecological relevance of shipwrecks on the Dutch Continental Shelf (dcs). Shipwrecks are biodiversity hotspots. The number of species recorded on shipwrecks is similar to the number of species found in soft bottoms of the entire dcs. The soft substrates, however, represent a vastly larger habitat on the dcs than the shipwrecks. Amongst many other taxa, juvenile and large Atlantic cod, linear skeleton shrimp, goldsinny wrasses and leopard spotted gobies were found in the shipwreck habitats. The presence of these important species and their absence from many other habitats, illustrate that shipwrecks function as key habitats, nurseries, and refugia that are rare or absent anywhere else in the Netherlands.
    Keywords: shipwrecks ; Netherlands ; biodiversity ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 6
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    Ecological relevance of shipwrecks in the North Sea (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 49-57
    Details
    Publication Date: 2024-01-12
    Description: This paper reports on observations made during wreck dive expeditions in 2010-2012, in order to investigate the ecological relevance of shipwrecks on the Dutch Continental Shelf (dcs). Shipwrecks are biodiversity hotspots. The number of species recorded on shipwrecks is similar to the number of species found in soft bottoms of the entire dcs. The soft substrates, however, represent a vastly larger habitat on the dcs than the shipwrecks. Amongst many other taxa, juvenile and large Atlantic cod, linear skeleton shrimp, goldsinny wrasses and leopard spotted gobies were found in the shipwreck habitats. The presence of these important species and their absence from many other habitats, illustrate that shipwrecks function as key habitats, nurseries, and refugia that are rare or absent anywhere else in the Netherlands.
    Keywords: shipwrecks ; Netherlands ; biodiversity
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 7
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    Marine fauna of hard substrata of the Cleaver bank and Dogger bank (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 69-78
    Details
    Publication Date: 2024-01-12
    Description: As most of the sea bottom in the Dutch part of the North Sea consists of sand, marine fauna that live in association with hard substrates are rarely monitored. We report here on the results of a species inventory in June 2011 done by scuba-diving while focusing on a wreck on the Dogger Bank and on rocky bottoms on the Cleaver Bank. This resulted in various new records of species for the Dutch part of the North Sea. This result appeared for a large part linked to the added value of monitoring with scuba-divers. It is therefore concluded that scuba-divers should be used in addition to the more traditional\nmonitoring methods in which dredges and grabs are used, if one aims at getting an accurate view of the biodiversity present in marine regions like the North Sea.
    Keywords: biodiversity ; hard substrata ; Netherlands ; marine ; scuba-diving
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 8
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    Benthic communities on hard substrates within the first Dutch offshore wind farm (OWEZ) (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 59-67
    Details
    Publication Date: 2024-01-12
    Description: Five years after the commissioning of the offshore wind farm Egmond aan Zee, the monopiles and the rocks of the scour protection layers were covered by a wide variety of marine organisms. This paper describes the results of qualitative and quantitative assessments carried out in 2008 and 2011. The assessments were based on video\nfootage, pictures and samples collected by divers at three different wind turbines. The ecological relevance of identified taxa is also discussed.
    Keywords: offshore wind farms ; Netherlands ; biodiversity ; benthic zone
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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