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Epiphytic Bryozoa of Posidonia oceanica leaves and scales

Citation

Lepoint G, Michel L, Heughebaert A (2019). Epiphytic Bryozoa of Posidonia oceanica leaves and scales. Version 1.2. University of Liège. Sampling event dataset https://doi.org/10.15468/78vsgm accessed via GBIF.org on 2023-01-28.

Description

Seasonal and depth-related biodiversity of leaf and scale epiphytic Cheilostome Bryozoa of the Neptune grass Posidonia oceanica

Sampling Description

Study Extent

All sampling and measurements were performed at Revellata Bay (Calvi, Corsica, France), near the marine research centre of STARESO (42°35’N-8°43’E) (University of Liège).

Sampling

Seagrass shoots were collected in triplicate in November 2002, March, June, September and November 2003 along the same permanent transects set at 7, 10, 15, 20, 25 and 30 m depth. Colonies counted (see above) were reported per meter square, accounting the average P. oceanica shoot density measured at each sampling depth. Shoot density, measured monthly using a quadrate with an area of 0.1 m2 randomly set in the meadow.

Quality Control

Identifications under stereomicroscope (Stemi 2000, Zeiss) were done to the lowest systematic level using keys for Bryozoa (Prenant & Bobin, 1966; Zabala & Maluquer, 1988), and the works of Hayward & McKinney (2002), Gautier (1961) or Balduzzi et al. (1991). All the colonies found on the two sides of leaves were counted. Colony on scales were not counted because dissection of scales (i.e. old leaf petioles remaining on rhizomes after limb abcission) involved colony fragmentation. Each sample is constituted of a single replicate gathering 3 shoots of P. oceanica. For Electra posidoniae, colonies fusion (or apparent fusion) is common. Therefore for this species, as a proxy of the colonies counted, the number of colonies founders (i.e. ancestrulae), which have a distinctive morphology, was counted.

Method steps

  1. This study involved the monthly assessment of colonization dynamics, biomass seasonality, and diet composition through measurements of stable isotopes, in E. posidoniae at a depth of 10 m in the Revellata Bay (Corsica, Mediterranean Sea).

Taxonomic Coverages

Bryozoa, Gymnolaemata, Cheilostomata
  1. Bryozoa
    common name: moss animals rank: phylum
  2. Gymnolaemata
    rank: class
  3. Cheilostomata
    rank: order

Geographic Coverages

Revellata Bay (Corsica, Mediterranean Sea)(a part of the Gulf of Calvi)

Bibliographic Citations

Contacts

Gilles Lepoint
originator
position: Research Associate F.R.S.-FNRS
University of Liège
BE
email: g.lepoint@ulg.ac.be
homepage: http://www.ulg.ac.be/oceanbio
Loïc Michel
originator
position: researcher
University of Liège
15 allée du 6 août
Liège
4000
BE
email: loic.michel@ulg.ac.be
homepage: http://www.ulg.ac.be/oceanbio
André Heughebaert
metadata author
position: Node Manager
Belgian Biodiversity Platform
Av Louise 231 Louizalaan
Bruxelles
B1050
BE
Telephone: +3222383796
email: a.heughebaert@biodiversity.be
Corine Pelaprat
author
position: researcher
STARESO (STAtion de REcherches Sous-marines et Océanographiques)
Calvi
FR
Gilles Lepoint
administrative point of contact
position: Research Associate F.R.S.-FNRS
University of Liège
15 allée du 6 août
Liège
4000
BE
email: g.lepoint@ulg.ac.be
homepage: http://www.ulg.ac.be/oceanbio
userId: https://orcid.org/0000-0003-4375-0357
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