Annual microplankton cycles in Villefranche Bay, Ligurian Sea, NW Mediterranean

Gómez, Fernando

doi:10.1093/plankt/25.4.323

Cited by 95 publications

(82 citation statements)

References 84 publications

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“…However, the increase in dinoflagellates was smaller and the decrease in ciliates was larger in the warmer conditions. Such findings are in accordance with those found in the Ligurian Sea (NW Mediterranean), where dinoflagellates increased their abundance over other groups of protists when variations in the North Atlantic oscillation increased the temperature and decreased the inorganic nutrient concentrations of surface waters (Gómez & Gorsky 2003). In addition, the change in the abundance of ciliates and dinoflagellates did not drive any significant change in the diversity or the evenness of the microplankton top predators.…”

Section: Changes In the Community Composition Of The Microplankton Tosupporting

confidence: 90%

“…Thus, given this scenario, the biomass of the microplankton community in the Bay of Blanes would decrease, but the differential effect of temperature on dinoflagellates and ciliates would select for the former. Other studies in the North Sea (Edwards & Richardson 2004) and the Mediterranean Sea (Gómez & Gorsky 2003) have also shown that dinoflagellates may be positively influenced by warmer conditions.…”

Section: Variations In the Microbial Food Web Related To Warmingmentioning

confidence: 84%

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Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Vázquez-Domı́nguez¹,

Vaqué²,

Gasol³

2012

Aquat. Microb. Ecol.

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Section: Changes In the Community Composition Of The Microplankton Tosupporting

confidence: 90%

Section: Variations In the Microbial Food Web Related To Warmingmentioning

confidence: 84%

Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Vázquez-Domı́nguez¹,

Vaqué²,

Gasol³

2012

Aquat. Microb. Ecol.

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“…Some of the ubiquitous species, namely: Dactyliosolen fragilissimus, Cerataulina pelagica and Guinardia striata are common bloom-forming taxa (Gómez and Gorsky, 2003), and it is presumed that these diatoms benefit from the ability to store nutrients and prosper in environments where nutrients are available in pulses (Phlips et al, 2010). Further, highest concentrations of another ubiquitous species, Thalassionema nitzschioides, were observed in July 2009.…”

Section: Seasonal Succession Of the Phytoplankton Speciesmentioning

confidence: 99%

“…The Mediterranean is a semi-enclosed sea usually thought of as an oligotrophic system (Sournia, 1973), with the exception of several small coastal areas where higher production is primarily influenced by large rivers (Gómez and Gorsky, 2003). One such system is the northern Adriatic Sea, a shallow basin (<50 m) with marked west to east gradients of physical and biological properties.…”

Section: Introductionmentioning

confidence: 99%

Seasonal phytoplankton dynamics in the coastal waters of the north-eastern Adriatic Sea

Godrijan

Marić

Tomažić

et al. 2013

Journal of Sea Research

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This study describes the dynamics of phytoplankton in relation to environmental factors in coastal waters of the north-eastern Adriatic Sea. The distant Po River"s influence is rarely noted on the eastern coastal part of the northern Adriatic, but it does trigger the crucial alternations in the community, e.g. mass development of diatoms in July 2009. A highly variable ecosystem, like the northern Adriatic, sustains high species diversity. Even though quite a few species were present for more than several months, we identified the seminal species of the seasonal succession. During spring Prorocentrum micans, Leptocylindrus minimus, Chaetoceros throndsenii, Ceratium furca and C. fusus were most characteristic. These species thrive in low salinity and mixed waters. Typical summer diatom species were Chaetoceros vixvisibilis, Proboscia alata, whileRhabdosphaera clavigera and Syracosphaera pulchra were identified as distinctive summer coccolithophorids. All the summer species preferred warmer waters with low nitrate and low silica content. The autumn community was characterised by species such as Calciosolenia murrayi, Chaetoceros socialis, Asterionellopsis glacialis, Lioloma pacificum. These species related to high nutrient conditions, but also to low Po River influence. In winter a prevalence of large diatoms Thalassiosira rotula, Neocalyptrella robusta and Pseudosolenia calcar-avis was recorded. The winter assemblage was characterised by species of cold water preference able to grow in well mixed conditions.

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“…As we already had data related to Ceratium phenology from Villefranche Bay in France (Tunin-Ley et al 2007), we focused the present study on data from 2 sites in the Ligurian Sea, in Monaco (Monaco) and Genoa (Italy). Data from the West Ligurian Sea were not considered because the Rhone river inputs, which are conveyed westward by the Ligurian-Provencal current (Gómez & Gorsky 2003), make this area a more nutrient-rich environment compared to the eastern Ligurian and Tyrrhenian Seas, which range from oligotrophic to mesotrophic throughout the annual cycle (Bianchi et al 1999). The oldest studies from the Ligurian Sea reported the monthly presence of Ceratium species, among other microphytoplankton species, from January 1907 to February 1914 during the Eider cruises conducted in the vicinity of Monaco (Pavillard 1934(Pavillard , 1936(Pavillard , 1937a(Pavillard , 1937b.…”

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confidence: 99%

Phytoplankton biodiversity and NW Mediterranean Sea warming: changes in the dinoflagellate genus Ceratium in the 20th century

Tunin‐Ley¹,

Ibañez²,

Labat³

et al. 2009

Mar. Ecol. Prog. Ser.

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Our knowledge of the response of phytoplankton to climate change is restricted by the lack of phytoplankton long-term studies, especially those reporting species data. To circumvent this problem, we combined recent data from sampling at monitoring sites with old bibliographic data. The study was conducted on the genus Ceratium (planktonic dinoflagellates) in the NW Mediterranean, as numerous studies have been conducted in the area since the beginning of the 20th century. In addition, species of this highly diverse genus are known to be particularly sensitive to water temperature, and should thus be responsive to global warming. The temporal distribution of Ceratium species over the last century showed a progressive disappearance from the surface layer of likely stenothermic species, which may have moved to deeper layers in response to water warming, along with a decrease of species richness during the annual cycle. Seasonal and phenological aspects of Ceratium assemblages were also affected, as illustrated by the earlier timing in the minimum of richness. A change in the overall species assemblage also occurred from past to present in the Ligurian Sea, suggesting a warming in this area consistent with the development in surface water temperatures. Our results suggest that Ceratium species may constitute good biological indicators of warming in the NW Mediterranean Sea. In addition, the present study showed the importance of time-series data and the value of historical literature as the basis for ecological studies of long-term trends needed to substantiate our current understanding of the impact of global change on marine biodiversity. KEY WORDS: Ceratium · Phytoplankton · Climate change · Long-term series · Mediterranean · Biodiversity · Biological indicator · Historical ecology Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 375: [85][86][87][88][89][90][91][92][93][94][95][96][97][98][99] 2009 Gentili 1996, Johnson 1997, Marbà & Duarte 1997, although periodic patterns such as the 22 to 25 yr period of solar activity may overlay the monotonic trends and mask them (Duarte et al. 1999). Nutrient concentrations, particularly phosphate and nitrogen, have also increased from the early 1960s, probably due to increasing atmospheric and terrestrial inputs, while concentration in silicate has remained relatively constant (Béthoux et al. 2002).Using different approaches, a number of studies have provided information on the temporal distribution of Mediterranean Sea phytoplankton (Duarte et al. 1999, Goffart et al. 2002, Marty et al. 2002, Gómez & Gorsky 2003, Bosc et al. 2004, Ribera d'Alcalà et al. 2004. Some of these studies show changes in phytoplankton in the NW Mediterranean in relation to climatic forcing. Pigment analysis over a decade revealed a positive trend in phytoplankton biomass in response to the lengthening of the summer stratification, accompanied by an increase of small-sized phytoplankton (picoplankton and nanoflagellates) able to support re...

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Annual microplankton cycles in Villefranche Bay, Ligurian Sea, NW Mediterranean

Cited by 95 publications

References 84 publications

Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Temperature effects on the heterotrophic bacteria, heterotrophic nanoflagellates, and microbial top predators of the NW Mediterranean

Seasonal phytoplankton dynamics in the coastal waters of the north-eastern Adriatic Sea

Phytoplankton biodiversity and NW Mediterranean Sea warming: changes in the dinoflagellate genus Ceratium in the 20th century

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