Records of five bryozoan species from offshore gas platforms rare for the Dutch North Sea

Beukhof, Esther; Coolen, Joop W.P.; Weide, B.E. van der; Cuperus, Joël; Blauwe, H. De; Lust, Jerry

doi:10.1186/s41200-016-0086-6

Cited by 3 publications

(3 citation statements)

References 11 publications

(18 reference statements)

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“…Scruparia ambigua is a widespread species recorded worldwide except for polar regions (Hayward and Ryland 1998 ). In general, this species is grows on bryozoans, algae, hydroids, stones and shells in shallow waters, not deeper than 50 m (Hayward and Ryland 1998 ), but also in artificial substrates (Ryland 1965 ; Beukhof et al 2016 ; McCuller and Carlton 2018 ; Coolen et al 2020 ). However, it was not previously recorded in the Madeira Archipelago.…”

Section: Resultsmentioning

confidence: 99%

“…Scruparia ambigua is recorded here for the first time in Madeira. Since this species typically grows on artificial substrates and is commonly found in harbours and marinas around the world (Ryland 1965 ; Beukhof et al 2016 ; McCuller and Carlton 2018 ; Coolen et al 2020 ), its presence in Madeira suggests a recent introduction via shipping. As this species forms small, repent, and erect uniserial colonies, in most cases growing on other organisms such as other bryozoans or hydroids, colonies could also have gone unnoticed in previous works.…”

Section: Discussionmentioning

confidence: 99%

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New species and new records of bryozoan species from fouling communities in the Madeira Archipelago (NE Atlantic)

et al. 2023

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Hull fouling is considered to be the most significant vector of introduction of marine non-indigenous species (NIS) in the Madeira Archipelago (NE Atlantic) because these islands provide a vital passage route for many ships. The transfer of species between boat hulls and artificial substrates in marinas is known to be high. Bryozoans are among the most common groups of marine invertebrates growing on this type of substrate. In recent years, significant advances have been made in our knowledge about the biodiversity of bryozoans in the Madeira Archipelago. Nonetheless, the currently recognized numbers remain far from reflecting the actual bryozoan species richness. In this context, we examine bryozoan samples stemming from NIS monitoring surveys on artificial substrates along the southern coast of the Madeira Archipelago, in four recreational marinas and in two offshore aquaculture farms. This has yielded new information about ten bryozoan species. Two of them, Crisia noronhai sp. nov. and Amathia maderensis sp. nov., are described for the first time, although at least the first one was previously recorded from Madeira but misidentified. Bugula ingens, Cradoscrupocellaria insularis, Scruparia ambigua, and Celleporaria brunnea are recorded for the first time in Madeira. Moreover, the material of C. brunnea was compared with the type, and a biometric analysis was performed with material from the Atlantic and Mediterranean. All samples identified as C. brunnea in both regions are the same species, and the variations described in the literature apparently reflect high intracolonial variability. Finally, we provide new information for the descriptions of 4 additional bryozoans, namely, Crisia sp. aff. elongata, Cradoscrupocellaria bertholletii, Scrupocaberea maderensis, and Tricellaria inopinata.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

New species and new records of bryozoan species from fouling communities in the Madeira Archipelago (NE Atlantic)

et al. 2023

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“…Although biofouling has been extensively studied in inshore or near shore surfaces, a relatively much less research has investigated offshore biofouling. Previous studies conducted in the offshore areas of the AG, Scottish Sea, Mediterranean Sea, North Sea, and the North China Sea, focused mainly on macrofoulers and showed an overall low fouling biomass and low amounts on various surfaces deployed in deeper waters compared to subsurface waters (Ghobashy and El Komy, 1980;Stachowitsch et al, 2002;Head et al, 2004;Abdelsalam and Wahab, 2012;Zhang et al, 2015;Beukhof et al, 2016;Van der Stap et al, 2016). On the contrary, information pertaining to variability in the abundance and composition of bacterial communities on offshore platforms has rarely been reported since first introduced by Mohammad (1976).…”

Section: Introductionmentioning

confidence: 99%

Development and Diversity of Bacterial Biofilms in Response to Internal Tides, a Case Study off the Coast of Kuwait

et al. 2020

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Information pertaining to changes in abundance and composition of microbial communities on offshore platforms in relation to changes in environmental conditions due to internal tides are scarce. In this study, artificial substrata were deployed at two locations on a gently sloping seabed off the coast of Kuwait. The abiotic factors at the two sites were recorded spatially and temporally using time-series measurements and continuous turbulence profiling for 13 days. Results showed variations in water density between the upper and deeper waters with the pycnocline undulating between 6 and 15 m depth at both locations. In the water layer beneath the pycnocline, significant current shear due to the internal tides led to higher turbidity coupled with lower dissolved oxygen (DO) and chlorophyll a concentration. The microbiological data showed a significant decrease in the biofilm total biomass, bacterial counts and phototrophic biomass with increase in depth at both locations. The 16S rRNA amplicon sequence analysis revealed that biofouling bacterial communities were affected by depth with Alphaproteobacteria and Bacteroidetes members dominating the upper and deeper waters at both locations. The non-metric multidimensional scaling (NMDS) basedordination analysis revealed that biofouling bacterial communities at 3 m were different than at 15 m, with a percentage of shared operational taxonomic units (OTUs) ≤64% between locations and depths. The power of the employed system is demonstrated in the results that shed light on the significance of prevailing environmental conditions associated with internal tides in shaping the biofilm community in subtropical offshore water systems.

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Benthic biodiversity on old platforms, young wind farms, and rocky reefs

Coolen

Weide²,

Cuperus

et al. 2018

ICES Journal of Marine Science

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The introduction of artificial hard substrates in an area dominated by a sandy seabed increases habitat available to epifouling organisms. To investigate this, samples were taken on old offshore oil and gas platforms, and data were compared with data of a young wind farm and a natural reef. Depth, sampling date, abundance of Mytilus edulis, Psammechinus miliaris, Metridium dianthus, and the presence of Tubulariidae and substrate (rock or steel) all correlated with species richness. Multivariate analysis showed a large overlap in communities on steel and rock and between the wind farm and platforms. The community changed over a gradient from deep rocks to shallow steel substrate, but no strong community differentiation was observed. Deep steel was more similar to natural rocks than shallow steel. When an artificial reef is intended to be colonized by communities similar to those on a natural reef, its structure should resemble a natural reef as much as possible.

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Records of five bryozoan species from offshore gas platforms rare for the Dutch North Sea

Abstract: This study reports on bryozoan species collected at three offshore gas platforms in the Dutch part of the North Sea. Four out of thirteen observed species are considered as rare in the Netherlands, whereas Cribrilina punctata is a new species for Dutch waters.

Cited by 3 publications

References 11 publications

New species and new records of bryozoan species from fouling communities in the Madeira Archipelago (NE Atlantic)

New species and new records of bryozoan species from fouling communities in the Madeira Archipelago (NE Atlantic)

Development and Diversity of Bacterial Biofilms in Response to Internal Tides, a Case Study off the Coast of Kuwait

Benthic biodiversity on old platforms, young wind farms, and rocky reefs

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