Cited by 87Marine Ecology and Invasive SpeciesMarine and coastal plant biologyEcology and Vegetation Dynamics Studies

A tale of two invaders: divergent spreading kinetics of the alien green algae Caulerpa taxifolia and Caulerpa cylindracea

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Montefalcone, Monica, Morri, Carla, Parravicini, Valeriano, Bianchi, Carlo Nike·2015·Biological Invasions

Abstract

The two alien green algae Caulerpa taxifolia and Caulerpa cylindracea (formerly Caulerpa racemosa var. cylindracea) are among the most notorious and threatening invasive species in the Mediterranean Sea. From the beginning of their introduction, C. taxifolia aroused a great concern due to its initial exponential spread and impacts on native ecosystems, whilst C. cylindracea received lower attention. In this paper, the distribution of the two aliens over the last 30 years in the Italian side of the Ligurian Sea (NW Mediterranean Sea) is reviewed and the kinetics of their spreading is compared. We combined available data on habitat occupancy with data on substratum cover obtained during underwater surveys to compute the average annual spreading rates for both aliens. C. taxifolia had an impressive expansion phase from 1984 to 2000 but then, its dispersal rate showed lower than that predicted and the species did not persist in areas formerly colonized. Today, abundance of this species is strongly declined as it disappeared from most of the attained areas. On the contrary, C. cylindracea exhibited an impressive and constant expansion from the beginning of its first appearance in the Ligurian Sea and, today, it is still increasing its range and habitat occupancy. Its abundance results 1.5-times greater than that reached by C. taxifolia during the period of its maximum expansion. The divergent kinetics of spreading of the two aliens prevents any possibility of generalization of the future behaviour of invasive species in the Mediterranean Sea: continuous and periodic surveys are thus mandatory to understand the kinetics of expansion and to define species-specific models.

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Crossref · 10.1007/s10530-015-0908-1

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  • Invasive alien species can regress after an invasion phase, following a 'boom and bust' invasion pattern, as reported for Caulerpa cylindracea, C. taxifolia, L. lallemandii and S. schimperi.

    “Still, invasive alien species can regress after an invasion phase, following a so-called 'boom and bust' invasion pattern, as has been reported for Caulerpa cylindracea , C. taxifolia , L . lallemandii and S. schimperi (Iveša et al. 2006; Montefalcone et al. 2015; Dimitriadis et al. 2021; Santamaría 2021).”

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Authors
Montefalcone, M., Morri, C., Parravicini, V., & Bianchi, C. N.
Affiliations
University of Genoa (IT)
Corresponding author
Montefalcone, Monica
Venue
Biological Invasions
Published
2015-05-26
Volume
17
Issue
9
Pages
2717-2728
ISSN
  • 1387-3547 (ISSN-L)
  • 1573-1464
OpenAlex
W1754338750
Cited by
87
References
71
Citations by year
2026: 6 · 2025: 11 · 2024: 6 · 2023: 6 · 2022: 9 · 2021: 9 · 2020: 8 · 2019: 13 · 2018: 6 · 2017: 8 · 2016: 5
FWCI
5.19
Type
journal article
Language
en
Open access
Locations
  • Biological Invasions (publishedVersion)
  • HAL (submittedVersion)
  • CINECA IRIS Institutial Research Information System (University of Genoa) (submittedVersion, other-oa)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine Ecology and Invasive Species
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal plant biology
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
Keywords
Caulerpa taxifolia, Caulerpa cylindracea, invasive green algae, spreading kinetics, range expansion, introduced species, Ligurian Sea, Mediterranean Sea, habitat occupancy, population decline (ecology), underwater surveying

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