Carpobrotus acinaciformis vs Carpobrotus edulis: Are there any differences in their impact on coastal dune plant biodiversity?

Sarmati, Simona; Acosta, Alicia Teresa Rosario

doi:10.1016/j.flora.2019.151422

Cited by 20 publications

(9 citation statements)

References 41 publications

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“…As on most of the Mediterranean coasts, the analyzed dunes have undergone persistent human pressure that altered coastal landscapes and vegetation [49,50], with several sectors having been invaded by the iceplant (Carpobrotus spp.) [51,52]. Carpobrotus spp.…”

Section: Study Areamentioning

confidence: 99%

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Measuring Alpha and Beta Diversity by Field and Remote-Sensing Data: A Challenge for Coastal Dunes Biodiversity Monitoring

et al. 2021

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Combining field collected and remotely sensed (RS) data represents one of the most promising approaches for an extensive and up-to-date ecosystem assessment. We investigated the potential of the so called spectral variability hypothesis (SVH) in linking field-collected and remote-sensed data in Mediterranean coastal dunes and explored if spectral diversity provides reliable information to monitor floristic diversity, as well as the consistency of such information in altered ecosystems due to plant invasions. We analyzed alpha diversity and beta diversity, integrating floristic field and Remote-Sensing PlanetScope data in the Tyrrhenian coast (Central Italy). We explored the relationship among alpha field diversity (species richness, Shannon index, inverse Simpson index) and spectral variability (distance from the spectral centroid index) through linear regressions. For beta diversity, we implemented a distance decay model (DDM) relating field pairwise (Jaccard similarities index, Bray–Curtis similarities index) and spectral pairwise (Euclidean distance) measures. We observed a positive relationship between alpha diversity and spectral heterogeneity with richness reporting the higher R score. As for DDM, we found a significant relationship between Bray–Curtis floristic similarity and Euclidean spectral distance. We provided a first assessment of the relationship between floristic and spectral RS diversity in Mediterranean coastal dune habitats (i.e., natural or invaded). SVH provided evidence about the potential of RS for estimating diversity in complex and dynamic landscapes.

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Section: Study Areamentioning

confidence: 99%

“…Field research evidenced that Carpobrotus spp. invasion substantially alters ecosystems diversity [52,55] and functioning of invaded areas [51,56], with such variations being also detectable by RS spectral values [57,58].…”

Section: Study Areamentioning

confidence: 99%

Measuring Alpha and Beta Diversity by Field and Remote-Sensing Data: A Challenge for Coastal Dunes Biodiversity Monitoring

et al. 2021

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“…Without genetic analysis, we were unable to determine exactly which species we worked with at Havatselet, but based on reports of species presence in Israel [ 20 , 54 ] it is safe to assume that most probably the species were Carpobrotus edulis (L.) N.E.Br., Carpobrotus acinaciformis (L.) L.Bolus, and Carpobrotus chilensis (Molina) N.E.Br., together with their hybrids, these being also the most problematic Carpobrotus species [ 16 , 55 , 56 ]. Hybrid Carpobrotus spp.…”

Section: Methodsmentioning

confidence: 99%

Demographic analysis of an Israeli Carpobrotus population

et al. 2021

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Carpobrotus species are harmful invaders to coastal areas throughout the world, particularly in Mediterranean habitats. Demographic models are ideally suited to identify and understand population processes and stages in the life cycle of the species that could be most effectively targeted with management. However, parameterizing these models has been limited by the difficulty in accessing the cliff-side locations where its populations are typically found, as well as accurately measuring the growth and spread of individuals, which form large, dense mats. This study uses small unmanned aerial vehicles (drones) to collect demographic data and parameterize an Integral Projection Model of an Israeli Carpobrotus population. We validated our data set with ground targets of known size. Through the analysis of asymptotic growth rates and population sensitivities and elasticities, we demonstrate that the population at the study site is demographically stable, and that reducing the survival and growth of the largest individuals would have the greatest effect on reducing overall population growth rate. Our results provide a first evaluation of the demography of Carpobrotus, a species of conservation and economic concern, and provide the first structured population model of a representative of the Aizoaceae family, thus contributing to our global knowledge on plant population dynamics. In addition, we demonstrate the advantages of using drones for collecting demographic data in understudied habitats such as coastal ecosystems.

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“…From the literature review, the morphological distinction between the two main European species -Carpobrotus acinaciformis (L.) L. Bolus and C. edulis (L.) N.E. Brown is still either not well documented or not easy to understand when applied in the field; such difficulties have been expressed even in recent work (Campoy et al, 2018;Sarmati et al, 2019). Hybridization between the two species had also been expressed (Suehs et al, 2004a,b), making their determination even harder (Campoy et al, 2018) due to broader overlapping of characters.…”

Section: Introductionmentioning

confidence: 99%

Morphology of the invasive 'Carpobrotus' (Aizoaceae) in Europe: Malta as a case study

Mifsud¹

2021

Mediterr. Bot.

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Since the late 19th century, different taxonomic views have been reported for Carpobrotus species occurring in the Maltese Islands, where the latest treatments imply two varieties of C. edulis and the doubtful occurrence of C. acinaciformis. Taxonomic inconsistencies are possibly derived from the poor understanding or misinterpretation of morphological characters. Moreover, the hybridogenous morphotypes resulting from horticultural advances make the determination of Carpobrotus even harder, especially with the application of outdated identification keys which do not take hybrids into account. The difficulty in determining Carpobrotus spp. has been expressed in several recent accounts within the Mediterranean region. A taxonomic investigation was carried out by applying eleven morphological characters adopted from recent monographs on 25 populations present in Malta. Three taxonomic units have been retrieved from the analyzed sample, where C. acinaciformis s.l. has been confirmed to represent all the purple-flowering populations and C. edulis s.s. for the yellow-flowering ones. Emphasis was given on the interpretation and understanding of distinctive morphological characters by employing a standardized method of assessment aided by images. This comparative morphological study resulted in a new characteristic in the leaves of C. edulis, by which it could be easily distinguished from C. acinaciformis in the vegetative state. A detailed discussion about the two different morphotypes of C. acinaciformis s.l. and dichotomous keys to distinguish Carpobrotus taxa are also provided.

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Carpobrotus acinaciformis vs Carpobrotus edulis: Are there any differences in their impact on coastal dune plant biodiversity?

Cited by 20 publications

References 41 publications

Measuring Alpha and Beta Diversity by Field and Remote-Sensing Data: A Challenge for Coastal Dunes Biodiversity Monitoring

Measuring Alpha and Beta Diversity by Field and Remote-Sensing Data: A Challenge for Coastal Dunes Biodiversity Monitoring

Demographic analysis of an Israeli Carpobrotus population

Morphology of the invasive 'Carpobrotus' (Aizoaceae) in Europe: Malta as a case study

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