Genetic diversity and biogeographical patterns of Caulerpa prolifera across the Mediterranean and Mediterranean/Atlantic transition zone

Varela-Álvarez, Elena; Balau, Ana C.; Marbà, Núria; Afonso-Carrillo, Julio; Duarte, Carlos M.; Serrão, Ester Á.

doi:10.1007/s00227-014-2605-5

Cited by 8 publications

(8 citation statements)

References 46 publications

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“…, Varela‐Álvarez et al. ). Thus, our results provide a valuable background of knowledge that will be useful for comparative purposes with other Mediterranean species in the future.…”

Section: Discussionmentioning

confidence: 98%

“…Lamouroux, the Mediterranean/Atlantic transition zone is the biogeographic boundary, and there is lack of connectivity between Atlantic and Mediterranean populations (Varela‐Álvarez et al. ). The scant information available for coralline algae suggests that such separation may also exist in some species of this group, although substantially more data are necessary for strong conclusions.…”

Section: Discussionmentioning

confidence: 99%

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Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta)

Pezzolesi

Falace

Lujan-Hernandez

et al. 2016

Journal of Phycology

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Lithophyllum byssoides is a common coralline alga in the intertidal zone of Mediterranean coasts, where it produces biogenic concretions housing a high algal and invertebrate biodiversity. This species is an ecosystem engineer and is considered a target for conservation efforts, but designing effective conservation strategies currently is impossible due to lack of information about its population structure. The morphological and molecular variation of L. byssoides was investigated using morphoanatomy and DNA sequences (psbA and cox2,3) obtained from populations at 15 localities on the Italian and Croatian coasts. Lithophyllum byssoides exhibited a high number of haplotypes (31 psbA haplotypes and 24 cox2,3 haplotypes) in the central Mediterranean. The psbA and cox2,3 phylogenies were congruent and showed seven lineages. For most of these clades, the distribution was limited to one or a few localities, but one of them (clade 7) was widespread across the central Mediterranean, spanning the main biogeographic boundaries recognized in this area. The central Mediterranean populations formed a lineage separate from Atlantic samples; psbA pair-wise divergences suggested that recognition of Atlantic and Mediterranean L. byssoides as different species may be appropriate. The central Mediterranean haplotype patterns of L. byssoides were interpreted as resulting from past climatic events in the hydrogeological history of the Mediterranean Sea. The high haplotype diversity and the restricted spatial distribution of the seven lineages suggest that individual populations should be managed as independent units.

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“…, Varela‐Álvarez et al. ). Thus, our results provide a valuable background of knowledge that will be useful for comparative purposes with other Mediterranean species in the future.…”

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta)

Pezzolesi

Falace

Lujan-Hernandez

et al. 2016

Journal of Phycology

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“…Therefore, without additional empirical evidence of the thermal limits of conspecific populations, it is not possible to make further inferences about intraspecific similarities or differences in thermal limits for these species. Nevertheless, it is noteworthy that there is evidence for genetic divergence between conspecific populations either at local or regional scales for C. nodosa , C. prolifera, and P. pavonica (Alberto et al, ; Tomasello et al, ; Silberfeld et al, ; Elena Varela‐Álvarez et al, ), making it plausible for the existence of different fundamental niches and the emergence of local ecotypes (Ackerly, ; Ehlers, Worm, & Reusch, ; Pakker & Breeman, ) with the capacity of tolerating different thermal limits.…”

Section: Discussionmentioning

confidence: 99%

“…Cystoseira compressa is a common brown seaweed inhabiting rocky shores of the Mediterranean coasts at 0–1 m depth and plays a central role as an engineering species on rocky shores (Gianni et al, ; Thibaut, Pinedo, Torras, & Ballesteros, ). Caulerpa prolifera is distributed across subtropical and tropical regions (Varela‐Álvarez et al, ). Padina pavonica and H. tuna are calcifying brown and green seaweeds, respectively, and are widely distributed throughout temperate and tropical waters of Atlantic and Indo‐Pacific, as well as encompassing populations in the Mediterranean Sea in littoral habitats (Hillis‐Colinvaux, ; Silberfeld et al, ).…”

Section: Methodsmentioning

confidence: 99%

“…Cystoseira compressa is a common brown seaweed inhabiting rocky shores of the Mediterranean coasts at 0-1 m depth and plays a central role as an engineering species on rocky shores (Gianni et al, 2013;Thibaut, Pinedo, Torras, & Ballesteros, 2005). Caulerpa prolifera is distributed across subtropical and tropical regions (Varela-Álvarez et al, 2015).…”

Section: Study Location Species Selection and Sampling Proceduresmentioning

confidence: 99%

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Thermal tolerance of Mediterranean marine macrophytes: Vulnerability to global warming

Savva

Bennett

Roca

et al. 2018

Ecology and Evolution

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The Mediterranean Sea is warming at three times the rate of the global ocean raising concerns about the vulnerability of marine organisms to climate change. Macrophytes play a key role in coastal ecosystems, therefore predicting how warming will affect these key species is critical to understand the effects of climate change on Mediterranean coastal ecosystems. We measured the physiological performance of six dominant native Mediterranean macrophytes under ten temperature treatments ranging from 12 to 34°C to examine their thermal niche, and vulnerability to projected warming in the western Mediterranean up until 2100. Among the macrophytes tested, Cymodocea nodosa was the species with the highest thermal optima and it was beyond current summer temperature. Therefore, C. nodosa may benefit from projected warming over the coming century. The optimal temperature for growth of the other species (Posidonia oceanica, Cystoseira compressa, Padina pavonica, Caulerpa prolifera, and Halimeda tuna) was lower. Similarly, the species presented different upper lethal limits, spanning at least across 5.1°C between 28.9°C (P. oceanica) and >34°C (C. nodosa). Our results demonstrate the variable physiological responses of species within the same local community to temperature changes and highlight important potential differences in climate change vulnerability, among species within coastal marine ecosystems.

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Niche conservatism and spread of seaweed invasive lineages with different residence time in the Mediterranean Sea

Chefaoui

Varela-Álvarez

2017

Biol Invasions

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Genetic diversity and biogeographical patterns of Caulerpa prolifera across the Mediterranean and Mediterranean/Atlantic transition zone

Cited by 8 publications

References 46 publications

Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta)

Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta)

Thermal tolerance of Mediterranean marine macrophytes: Vulnerability to global warming

Niche conservatism and spread of seaweed invasive lineages with different residence time in the Mediterranean Sea

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