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Distribution and abundance of co-occurring chthamalid barnacles Chthamalus montagui and Chthamalus stellatus (Crustacea, Cirripedia) on the southwest coast of Portugal
Sousa, E.B.; Cruz, T.; Castro, J.J. (2000). Distribution and abundance of co-occurring chthamalid barnacles Chthamalus montagui and Chthamalus stellatus (Crustacea, Cirripedia) on the southwest coast of Portugal, in: Jones, M.B. et al. Island, Ocean and Deep-Sea Biology: Proceedings of the 34th European Marine Biology Symposium, held in Ponta Delgada (Azores), Portugal, 13-17 September 1999. Developments in Hydrobiology, 152: pp. 339-345. https://dx.doi.org/10.1007/978-94-017-1982-7_31
In: Jones, M.B. et al. (2000). Island, Ocean and Deep-Sea Biology: Proceedings of the 34th European Marine Biology Symposium, held in Ponta Delgada (Azores), Portugal, 13-17 September 1999. Developments in Hydrobiology, 152. Springer Science+Business Media: Dordrecht. ISBN 978-0-7923-6846-5; e-ISBN 978-94-017-1982-7. XII, 391 pp. https://dx.doi.org/10.1007/978-94-017-1982-7, more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more
Related to:
Sousa, E.B.; Cruz, T.; Castro, J.J. (2000). Distribution and abundance of co-occurring chthamalid barnacles Chthamalus montagui and Chthamalus stellatus (Crustacea, Cirripedia) on the southwest coast of Portugal. Hydrobiologia 440(1-3): 339-345. https://dx.doi.org/10.1023/A:1004160203187, more

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Document type: Conference paper

Keywords
    Abundance
    Distribution
    Environments > Aquatic environment > Marine environment > Intertidal environment
    Chthamalus montagui Southward, 1976 [WoRMS]; Chthamalus stellatus (Poli, 1791) [WoRMS]
    Marine/Coastal

Authors  Top 
  • Sousa, E.B.
  • Cruz, T.
  • Castro, J.J.

Abstract
    Two co-occurring chthamalid barnacle species occur on the rocky shores of continental Portugal: Chthamalus stellatus (Poli) and Chthamalus montagui Southward. In the present study, patterns of distribution and abundance (density and percentage cover), both vertically (tidal level) and horizontally (wave action), were studied for each species on headlands (more wave action) and not on headlands (less wave action) and at two spatial scales (shore and site) and three tidal levels (low, mid and upper). Chthamalus montagui was significantly more abundant than C. stellatus in both degrees of wave action and at all tidal levels. Despite this great difference in abundance and considering each species individually, C. montagui was more abundant at mid tide-level, while C. stellatus was more abundant at the low tide-level, and C. montagui was less abundant on headlands, while C. stellatus was more abundant on headlands. Small-scale variability (between sites, tens of meters) of abundance of each species was detected, while differences on a larger scale (between shores, tens of kilometres) were not significant.

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