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  • 1
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    Seawater carbonate chemistry and taxonomic diversity of benthic communities under persistent natural CO2 disturbances (2024)
    PANGAEA
    Details
    Publication Date: 2024-05-14
    Description: Here, we explored the effects of ocean acidification on marine benthic communities using DNA metabarcoding to assess the diversity of algae and metazoans. Specifically, we examined the natural pH gradient generated by the Fuencaliente CO2 vent system, located near La Palma Island (Canary Islands).
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthos; Bicarbonate ion; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Carbonate ion; Carbonate system computation flag; Carbon dioxide; Class; CO2 vent; Coast and continental shelf; Community composition and diversity; Control_Zone_4; Entire community; Event label; Family; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Genus; Group; Identification; Identity; Kingdom; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Order; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Phylum; Rank; Reads; Rocky-shore community; Salinity; Scientific name; Site; Species; Temperate; Temperature, water; Transition25; Transition75; Type of study; Vent_Zone_1
    Type: Dataset
    Format: text/tab-separated-values, 216880 data points
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    DATA PANGAEA
  • 2
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    Fast climatic changes place an endemic Canary Island macroalga at extinction risk (2021)
    Springer
    Details
    Publication Date: 2021-10-29
    Description: Global warming and ultraviolet radiation (UVR) affect marine organisms worldwide. However, we still lack knowledge about the consequences of these environmental changes to range-restricted macroalgae species, such as Gelidium canariense, a habitat-forming endemic of the Canary Islands. The aim of this study is to provide useful data for analyzing the conservation status of this endemic species. To do this, (1) we compared distributional data from 1987 with the data collected in 2008 and 2019 along the northern coast of Tenerife; (2) we assessed the variation in macroalgae assemblages dominated by G. canariense over the last decade on this same cost; and (3) we explored the correlation of these results with the actual trends of sea surface temperature (SST), air temperature at 2 m above the sea surface (T2m), UVR, and downward solar radiation (DSR). The results showed significant changes in the distribution of G. canariense in the last 30 years at Tenerife. More than 90% of its populations have declined. The endemic macroalgae have been replaced by the globally distributed species Pterocladiella capillacea at nearly all the sites studied. The cover of G. canariense and Gelidium arbuscula decreased significantly with increasing SST and T2m. Additionally, G. canariense is negatively related to the rise in UVR. These results highlight the vulnerability of both species of Gelidium to global warming and UVR, but especially of G. canariense. The drastic decline of this species reveals the need to upgrade its conservation status and implement protection measures to reduce the damage that predicted global change scenario may have to their relict populations.
    Print ISSN: 1436-3798
    Electronic ISSN: 1436-378X
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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    PAPER CURRENT
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