Long-Term Trends, Variability and Extremes of In Situ Sea Surface Temperature Measured Along the Eastern Adriatic Coast and its Relationship to Hemispheric Processes

Grbec, Branka; Matić, Frano; Paklar, Gordana Beg; Morović, Mira; Popović, Ružica; Vilibić, Ivica

doi:10.1007/s00024-018-1793-1

Cited by 38 publications

(20 citation statements)

References 36 publications

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“…3). These results are concomitant with data obtained from the long-term (1959 -2015) analysis of mid-Adriatic (GRBEC et al 2018). GRBEC et al (2018) emphasized that the SST warming was noticeable after 1980 and has particularly intensified since 2008, with trends as high as 1.56 ºC/decade.…”

Section: Discussionsupporting

confidence: 67%

Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Violić

Kogovšek

Pestorić

et al. 2019

Acta Adriat. (Online)

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A semi- quantitative time series (2013-2017) was used to present the recent events of scyphomedusae appearance and abundance in the Boka Kotorska Bay, Montenegro, Southeast Adriatic. Six meroplanktonic species were recorded: Aurelia spp, Chrysaora hysoscella, Cotylorhiza tuberculata ̧ Discomedusa lobata, Drymonema dalmatinum and Rhizostoma pulmo. Among them, C. hysoscella and D. lobata dominated in the water column during winter and spring, forming dense aggregations in March and May, and February to May, respectively. Our description of the D. lobata blooms are actually the first known records of blooms for this species. C. tuberculata was observed in the Bay principally in August and September. The bloom was occurred only in 2017, being the first information of C. tuberculata mass appearance in this area. We hypothesized that global warming phenomena could trigger the observed changes, and in this respect, long-term trends of sea surface temperature (SST) fluctuations were analysed. The scyphomedusae blooms coincided with high positive SST anomalies, noted in the last seven years for this area. To better understand the mechanisms underlying changes in their phenology and abundance, detailed studies on benthic stages in the Bay are essential.

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Section: Discussionsupporting

confidence: 67%

Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Violić

Kogovšek

Pestorić

et al. 2019

Acta Adriat. (Online)

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“…A linear trend analysis of sea surface temperature in the area of the eastern middle Adriatic shows the existence of an upward summer sea surface temperature trend (July–September) (Figure 8). In the last few decades (1979–2015), a positive trend has been observed in the entire Eastern Adriatic Sea [99], with several records of extreme sea surface temperatures in the warming season as a result of heat waves passing over Europe. Those heat waves hit Europe, North Africa, and the Middle East in the late spring and summer, where many new temperature records were measured.…”

Section: Discussionmentioning

confidence: 99%

“…( A ) Time series of the SST values for the summer period (JAS) and ( B ) associated linear trends at the Split coastal station according to Grbec et al [99]. …”

Section: Figurementioning

confidence: 99%

Massive Occurrence of the Harmful Benthic Dinoflagellate Ostreopsis cf. ovata in the Eastern Adriatic Sea

Gladan

Arapov

Casabianca

et al. 2019

Toxins

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In September 2015, a massive occurrence of the Ostreopsis species was recorded in central Adriatic Kaštela Bay. In order to taxonomically identify the Ostreopsis species responsible for this event and determine their toxin profile, cells collected in seawater and from benthic macroalgae were analyzed. Conservative taxonomic methods (light microscopy and SEM) and molecular methods (PCR-based assay) allowed the identification of the species Ostreopsis cf. ovata associated with Coolia monotis. The abundance of O. cf. ovata reached 2.9 × 104 cells L−1 in seawater, while on macroalgae, it was estimated to be up to 2.67 × 106 cells g−1 of macroalgae fresh weight and 14.4 × 106 cells g−1 of macroalgae dry weight. An indirect sandwich immunoenzymatic assay (ELISA) and liquid chromatography–high-resolution mass spectrometry (LC-HRMS) were used to determine the toxin profile. The ELISA assay revealed the presence of 5.6 pg palytoxin (PLTX) equivalents per O. cf. ovata cell. LC-HRMS was used for further characterization of the toxin profile, which showed that there were 6.3 pg of the sum of ovatoxins (OVTXs) and isobaric PLTX per O. cf. ovata cell, with a prevalence of OVTXs (6.2 pg cell−1), while the isobaric PLTX concentration was very low (0.1 pg cell−1). Among OVTXs, the highest concentration was recorded for OVTX-a (3.6 pg cell−1), followed by OVTX-b (1.3 pg cell−1), OVTX-d (1.1 pg cell−1), and OVTX-c (0.2 pg cell−1).

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“…The increase of surface water temperature in the northern Adriatic Sea (Degobbis et al 2000;Solidoro et al 2009;Giani et al 2012) and worldwide in coastal environments (Lima and Wethey 2016) is generally recognised. A warming trend, with an increase in surface water temperature, particularly intensified since 2008, of about 1.1 °C in the period 1979-2015, has been observed along the eastern Adriatic coast, although the authors pointed out the existence of multidecadal sea temperature variability (Grbec et al 2018). A decrease in Skeletonema abundances has also been reported for Narragansett Bay in the period 1980-1997 with the decline being greatest during the winter-spring bloom (Borkman and Smayda 2009).…”

Section: Interannual Variabilitymentioning

confidence: 96%

Phytoplankton temporal dynamics in the coastal waters of the north-eastern Adriatic Sea (Mediterranean Sea) from 2010 to 2017

Cerino¹,

Fornasaro²,

Kralj³

et al. 2019

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Phytoplankton community structure was analysed from 2010 to 2017 at C1-LTER, the coastal Long-Term Ecological Research station located in the Gulf of Trieste, which is the northernmost part of the Mediterranean Sea. Phytoplankton abundance and relevant oceanographic parameters were measured monthly in order to describe the seasonal cycle and interannual variability of the main phytoplankton taxa (diatoms, dinoflagellates, coccolithophores and flagellates) and to analyse their relationship with environmental conditions. Overall, phytoplankton abundances showed a marked seasonal cycle characterised by a bloom in spring, with the peak in May. During the summer, phytoplankton abundances gradually decreased until September, then slightly increased again in October and reached their minima in winter. In general, the phytoplankton community was dominated by flagellates (generally <10 µm) and diatoms co-occurring in the spring bloom. In this period, diatoms were also represented by nano-sized species, gradually replaced by larger species in summer and autumn. Phytoplankton assemblages differed significantly between seasons (Pseudo-F = 9.59; p < 0.01) and temperature and salinity were the best predictor variables explaining the distribution of the multivariate data cloud. At the interannual scale, a strong decrease of the late-winter bloom was observed in recent years with the spring bloom being the main phytoplankton increase of the year.

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Long-Term Trends, Variability and Extremes of In Situ Sea Surface Temperature Measured Along the Eastern Adriatic Coast and its Relationship to Hemispheric Processes

Cited by 38 publications

References 36 publications

Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic)

Massive Occurrence of the Harmful Benthic Dinoflagellate Ostreopsis cf. ovata in the Eastern Adriatic Sea

Phytoplankton temporal dynamics in the coastal waters of the north-eastern Adriatic Sea (Mediterranean Sea) from 2010 to 2017

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