Ecology of marine fouling and wood-boring organisms of Western Norway

Nair, N. Unnikrishnan

doi:10.1080/00364827.1962.10410269

Cited by 40 publications

(17 citation statements)

References 13 publications

(11 reference statements)

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“…The presence of Botryllus schlosseri along the Scandinavian coasts has only been mentioned anecdotally. Van Name (1945) and Berrill (1950) referred to it as appearing in 'western and southern Norway' (supported by the observations of Nair 1962 andDybern 1967). Nair (1962) mentioned it among other fouling organisms from 4 sampling stations in the fjords of the Bergen area, demonstrating that colonies are active only during the summer and fall periods when water temperatures are > 9°C and disappear for the winter months, probably hibernating (Brunetti et al 1980).…”

Section: Introductionmentioning

confidence: 94%

“…In the northern hemisphere, B. schlosseri populations are distributed from the southern coast of India (8°22' N latitude; Meenakshi & Senthamarai 2006), where sea water temperature ranges from 24 to 29. 5°C (Damotharan et al 2010), to the Norwegian sea ports (> 62°N) with sea water temperatures ranging between 3 and 17°C (Nair 1962). In natural environments, they can be found below and above stones, on exposed natural rocky habitats and down to 200 m depth (Ben-Shlomo et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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Population genetic structure and modes of dispersal for the colonial ascidian Botryllus schlosseri along the Scandinavian Atlantic coasts

Reem¹,

Mohanty²,

Katzir³

et al. 2013

Mar. Ecol. Prog. Ser.

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The colonial ascidian Botryllus schlosseri is a well-known cosmopolitan invader of sheltered temperate marine communities which has garnered major scientific attention. We analyzed modes of dispersal and population genetic structures for 11 populations of B. schlosseri along the Scandinavian coasts, using 5 microsatellite loci. The analysis revealed high polymorphism, resulting in 108 different alleles (of which 58 were private alleles), positive correlations between the number of sites shared by specific alleles and their mean frequencies, and lower genetic diversity values than in previously studied worldwide populations. A complex network of gene flow among sampled populations was revealed, with 2 clades, southeastern and northwestern, and higher genetic variation in the latter clade due to either restricted gene flow or more intensive genetic drift. A detailed analysis of allele frequencies revealed possible ancestral alleles. By using Bayesian analysis, 9 previously studied populations from Britain and European Atlantic coasts were compared, encompassing a single geographical entity along thousands of kilometers from Gibraltar (36°8' N) to Ålesund, Norway (62°29' N). Results showed a high connectivity among distant localities, most probably due to extensive human-mediated transport. This refutes isolation by distance, with a higher intensity of gene flow among Scandinavian sites compared to the other European sites. Bayesian clustering computation assembled the whole data set of 19 populations into 14 clusters and 2 major northern and southern clades.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Population genetic structure and modes of dispersal for the colonial ascidian Botryllus schlosseri along the Scandinavian Atlantic coasts

Reem¹,

Mohanty²,

Katzir³

et al. 2013

Mar. Ecol. Prog. Ser.

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“…NAIR (1962) and DYBERN (1967), who studied fouling organisms near Bergen, did not report the occurrence of chironomid larvae on their test panels.…”

Section: Discussionmentioning

confidence: 89%

The larvae ofHalocladius (Halocladius) variabilis(Diptera: Chironomidae) from the fouling assemblages on wooden test panels submerged in Trondheimsfjorden

Santhakumaran

Sneli²,

Sundnes³

1984

Sarsia

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GUNNAR SUNDNES 1984 12 29. The larvae of Halocladius (Halocladius) variabilis (Diptera: Chironomidae) from the foulingassemblages on wooden test panels submerged in Trondheimsfjorden. -Sarsia 69:155-158. Bergen. ISSN 0036-4827.For the first time in Norway the occurrence of chironomid larvae and pupae of Halocladius (Halocladius) variabilis has been recorded from timber test panels exposed for varying periods in Trondheimsfjorden (western Norway) during 1977-78, at depths ranging from 1.5 to 10 m at low tide. Settlement was observed throughout the year. The larvae were present among a variety of fouling communities ranging from a thin film of algae and silt to extremely heavy settlement of coelenterates, serpulids, barnacles, bivalves, bryozoans, ascidians, or algae together with a thick layer of silt and faeces of polychaetes, ascidians, and wood-borers. The larvae made their tubes either in shallow grooves on the timber surface or in the angle between the upturned edges of bryozoan colonies and the wood surface. Larvae and pupae even settled on panels pressure-treated with creosote and Boliden salt. The larvae were unaffected when placed in distilled water and could withstand salinities as high as 70.5 %0 when transferred directly from distilled water and 97.0 %0 after acclimation.

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“…Additionally, the force of currents on the bulky colonies of tunicates attached to highly‐exposed structural remains, such as frames and beams, can exert a destructive mechanical action. From a different point of view, biofouling organisms could protect archaeological materials from the water or sedimentary erosion and from the action of wood‐borers (Nair, 1962; Nair and Saraswathy, 1971; Pournou et al , 2001). The presence of marine‐borer galleries in the upper works of the Swift is a clear indicator of in situ attack, that is, after the ship sank.…”

Section: Biological Site‐formation Processesmentioning

confidence: 99%

Archaeological research on HMS Swift: a British Sloop-of-War lost off Patagonia, Southern Argentina, in 1770

Elkin

Argüeso²,

Grosso³

et al. 2007

Int J Nautical Archaeology

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HMS Swift was a British sloop-of-war which sank off the coast of Patagonia, Southern Argentina, in 1770. Since 1997 the Underwater Archaeology Programme of the National Institute of Anthropology has taken charge of the archaeological research conducted at the wreck-site. This article presents an overview of the continuing Swift project and the different research lines comprised in it. The latter cover aspects related to ship-construction, material culture and natural site-formation processes.

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Ecology of marine fouling and wood-boring organisms of Western Norway

Cited by 40 publications

References 13 publications

Population genetic structure and modes of dispersal for the colonial ascidian Botryllus schlosseri along the Scandinavian Atlantic coasts

Population genetic structure and modes of dispersal for the colonial ascidian Botryllus schlosseri along the Scandinavian Atlantic coasts

The larvae ofHalocladius (Halocladius) variabilis(Diptera: Chironomidae) from the fouling assemblages on wooden test panels submerged in Trondheimsfjorden

Archaeological research on HMS Swift: a British Sloop-of-War lost off Patagonia, Southern Argentina, in 1770

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