Benthic assemblages and temperature effects on Paracentrotus lividus and Arbacia lixula larvae and settlement

Privitera, Davide; Noli, Michela; Falugi, Carla; Chiantore, Mariachiara

doi:10.1016/j.jembe.2011.06.030

Cited by 66 publications

(48 citation statements)

References 43 publications

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“…Then Arbacia lixula, which settles preferentially in encrusting coralline algae, can colonize the barren (Privitera et al, 2011) and maintain it (Bonaviri et al, 2011). According to this facilitative model, in contrast to the traditional hypothesis of a competitive scenario, the decrease in P. lividus density, currently affected by cumulative human impact, should reduce the likelihood of widespread barren formation.…”

Section: Discussionmentioning

confidence: 94%

Role of two co-occurring Mediterranean sea urchins in the formation of barren from Cystoseira canopy

Agnetta¹,

Badalamenti²,

Ceccherelli

et al. 2015

Estuarine, Coastal and Shelf Science

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Section: Discussionmentioning

confidence: 94%

Role of two co-occurring Mediterranean sea urchins in the formation of barren from Cystoseira canopy

Agnetta¹,

Badalamenti²,

Ceccherelli

et al. 2015

Estuarine, Coastal and Shelf Science

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“…Parravicini et al [178] show that the increase in temperature may be more complex than the simple prediction of species modifying their distribution range according to their thermal limit, near their boundary, with even a decrease in their cover on shallow rocky reefs. The worrying regression of Cystoseira and Sargassum forests, with several species locally and/or functionally extinct, seems to be related to overfishing (resulting in overgrazing by herbivores; see above), uprooting by fishing nets and coastal development, in addition to invasive NISs, rather than to sea water warming [34,66,102,157,179,180], but see [166]. As far as the Posidonia oceanica seagrass meadows are concerned, a negative effect of warming is unclear; it can shrink its range near its warm limit (e.g.…”

Section: The Direct Impact Of the Sea Surface Temperature Warmingmentioning

confidence: 99%

Marine Biodiversity - Warming vs. Biological Invasions and overfishing in the Mediterranean Sea: Take care, ‘One Train can hide another’

Boudouresque¹

2017

MOJES

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Biodiversity means the variety of life, encompassing levels of complexity from within species to across ecosystems. Biodiversity therefore includes several dimensions: evolutionary scale (genetic, species, higher taxonomic levels and phylogenetic diversity), functional scale, organizational scale (patch, ecosystem, landscape/seascape diversity), spatial scale (from sample to local, regional and global richness) and heterogeneity diversity. Biodiversity can therefore be measured in different and complementary ways, thus involving the use of at least 200 different metrics, which can suggest different and contrasting conclusions. It is worth emphasizing that species richness may be the least appropriate metric, despite its popular acceptance. There is a growing tendency for stakeholders, managers, government officials, environmentalists, scientists, politicians and the media to focus, as concerns threats to biodiversity, on species richness and climate change. However, focusing on climate warming can mask other stressors that, today, and perhaps for decades to come, may have more impact on ecosystems than global warming. In the Mediterranean Sea, the overall impact of Non-Indigenous Species (NISs) and overfishing on species diversity, ecosystem diversity and ecosystem functioning exceeds to a greater or lesser degree the direct impact of warming. Drastically altered functioning patterns, and even new ecosystems are spreading throughout the Mediterranean Sea. This trend is likely to become more pronounced over the next decades. Ecosystem goods and services are also being profoundly altered, generally towards a decline, as illustrated by the overgrazed barren grounds of the eastern basin, which no longer support fisheries, by the impact of the Caulerpa meadows on the scuba diving business and the economic value of the fisheries of the western basin, by the brackish lagoon ecosystems and by the blooms of the introduced comb jelly Mnemiopsis leidyi in the Black Sea, before the arrival of its predator Beroe ovata. Here, we draw attention to the fact that, at this moment and probably also in the future, the huge flow of NISs and overfishing constitute worrying issues, although largely ignored by stakeholders and political authorities. Take care: Un train peut en cacher un autre (one train can hide another; i.e. one danger may hide other unsuspected dangers), that is to say the impact of warming may contribute to hiding other effects, of at least equal gravity, such as biological invasions and overfishing.

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“…According to our data, it is likely that recent and future warming of the Western Mediterranean can result in an environment increasingly favourable for the reproduction and development of a thermotolerant species such as A. lixula (Privitera et al, 2011). We undoubtedly show that both fertilization and early larval development, using gamete from A. lixula adults acclimatized at 20 C, were thermotolerant to 26 (þ6 C above sea surface temperature SST).…”

Section: Ecological Consequencesmentioning

confidence: 60%

“…Harding and Harding, 1952;Castagna et al, 1981;George et al, 1990;De Giorgi et al, 1991). Recently, renewed interest in this species arose mainly due to its ecological role, its unusually wide distribution area (from equatorial waters to temperate Mediterranean) and its warm-water affinity Wangensteen et al, 2012;Privitera et al, 2011;Agnetta et al, 2013).…”

Section: Ecological Consequencesmentioning

confidence: 99%

“…This species has a considerable trophic plasticity, ranging from omnivory to strict carnivory (Wangensteen et al, 2011;Agnetta et al, 2013) and its scraping predatory behaviour can play a dominant role in driving switches between one complex state, dominated by a stratified assemblage of several erect macroalgae, to a simpler one dominated by few encrusting algae: the so-called 'barren ground' Wangensteen et al, 2012;Agnetta et al, 2013). New and increasing evidence suggests that on-going warming of the Western Mediterranean results in an environment increasingly favourable for the reproduction and development of A. lixula (Francour et al, 1994;Guidetti and Dulcic, 2007;Gianguzza et al, 2011;Privitera et al, 2011;Lessios et al, 2012;Wangensteen et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Temperature modulates the response of the thermophilous sea urchin Arbacia lixula early life stages to CO2-driven acidification

Gianguzza

Visconti

Gianguzza

et al. 2014

Marine Environmental Research

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a b s t r a c tThe increasing abundances of the thermophilous black sea urchin Arbacia lixula in the Mediterranean Sea are attributed to the Western Mediterranean warming. However, few data are available on the potential impact of this warming on A. lixula in combination with other global stressors such as ocean acidification. The aim of this study is to investigate the interactive effects of increased temperature and of decreased pH on fertilization and early development of A. lixula. This was tested using a fully crossed design with four temperatures (20, 24, 26 and 27 C) and two pH levels (pH NBS 8.2 and 7.9). Temperature and pH had no significant effect on fertilization and larval survival (2d) for temperature <27 C. At 27 C, the fertilization success was very low (<1%) and all larvae died within 2d. Both temperature and pH had effects on the developmental dynamics. Temperature appeared to modulate the impact of decreasing pH on the % of larvae reaching the pluteus stage leading to a positive effect (faster growth compared to pH 8.2) of low pH at 20 C, a neutral effect at 24 C and a negative effect (slower growth) at 26 C. These results highlight the importance of considering a range of temperatures covering today and the future environmental variability in any experiment aiming at studying the impact of ocean acidification.

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Benthic assemblages and temperature effects on Paracentrotus lividus and Arbacia lixula larvae and settlement

Cited by 66 publications

References 43 publications

Role of two co-occurring Mediterranean sea urchins in the formation of barren from Cystoseira canopy

Role of two co-occurring Mediterranean sea urchins in the formation of barren from Cystoseira canopy

Marine Biodiversity - Warming vs. Biological Invasions and overfishing in the Mediterranean Sea: Take care, ‘One Train can hide another’

Temperature modulates the response of the thermophilous sea urchin Arbacia lixula early life stages to CO2-driven acidification

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