Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy)
[EN] Very small-sized shoots of the Mediterranean seagrass Posidonia oceanica, defined as “bonsai” shoots, were found in areas with most intense CO2 emissions and low pH associated with four vents systems off Panarea island (Aeolian Archipelago, Sicily, Southern Tyrrhenian Sea). Bonsai shoots were s...
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ftcsic:oai:digital.csic.es:10261/286318 2024-06-23T07:55:55+00:00 Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) Gambi, María Cristina Esposito, Valentina Marín-Guirao, Lázaro Blue Marine Foundation Marín-Guirao, Lázaro 2023-03-01 http://hdl.handle.net/10261/286318 https://doi.org/10.1016/j.aquabot.2022.103611 https://api.elsevier.com/content/abstract/scopus_id/85144444785 en eng Elsevier Aquatic Botany Preprint https://doi.org/10.1016/j.aquabot.2022.103611 Sí Aquatic Botany 185: 103611 (2023) 0304-3770 http://hdl.handle.net/10261/286318 doi:10.1016/j.aquabot.2022.103611 1879-1522 2-s2.0-85144444785 https://api.elsevier.com/content/abstract/scopus_id/85144444785 open Posidonia oceanica Ocean acidification Hydrothermal vents Morphology Phenology Tyrrhenian Sea http://metadata.un.org/sdg/7 Ensure access to affordable reliable sustainable and modern energy for all artículo http://purl.org/coar/resource_type/c_6501 2023 ftcsic https://doi.org/10.1016/j.aquabot.2022.103611 2024-05-29T00:01:24Z [EN] Very small-sized shoots of the Mediterranean seagrass Posidonia oceanica, defined as “bonsai” shoots, were found in areas with most intense CO2 emissions and low pH associated with four vents systems off Panarea island (Aeolian Archipelago, Sicily, Southern Tyrrhenian Sea). Bonsai shoots were sampled in September 2021 and October 2022: Bottaro crater (8 m depth), Camp 7 (16 m and 21 m), Black Point (20 m) and Hot/Cold Points (10 m). They had 2–6 leaves, and adult-intermediate leaves were 5–21 cm long and 3.5–7 mm wide, with leaf shoot surface ranging 4.8 and 44.5 cm2, and shoot leaf biomass between 16 and 89 mg (d.w.). These values were all significantly lower (t-test p < 0.006–0.0001) than those measured in normal-sized shoots collected within the vents and in control sites not affected by gas emissions. Bonsai shoots had 86–89% lower leaf surface, and 61–75% lower leaf biomass than all normal-sized shoots measured. The sheath thickness of the bonsai shoots was very low (0.1–0.8 mm), and the temporal trend of sheath thickness along the rhizome (lepidochronology) showed an irregular pattern, without the clear cyclical seasonal variation typical of normal-sized shoots. The reasons of size reduction and lack of temporal cycle in lepidochronology are discussed in the light of plant acclimatization and the constraints imposed by the continuous exposure to the stressful conditions of seawater acidification and presence of phytotoxic gases (e.g. hydrogen sulfide) in the vents. We wish to thank the staff of the 5th and 6th School of scientific diving at Panarea (2021–2022) and the 2nd stage on Posidonia oceanica ecology at Salina (2022; founded by the Blue Marine Foundation), as well as the diving Amphibia coordinated by Andrea Fogliuzzi, for the support at sea and in the laboratory. Thanks to the ECCSEL NatLab Italy infrastructure of the OGS for the logistic support at Panarea. We wish to thank the anonymous reviewers, and the Editor B. van Tussenbroek, for the useful and constructive comments. Peer ... Article in Journal/Newspaper Ocean acidification Digital.CSIC (Spanish National Research Council) Aquatic Botany 185 103611 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Posidonia oceanica Ocean acidification Hydrothermal vents Morphology Phenology Tyrrhenian Sea http://metadata.un.org/sdg/7 Ensure access to affordable reliable sustainable and modern energy for all |
spellingShingle |
Posidonia oceanica Ocean acidification Hydrothermal vents Morphology Phenology Tyrrhenian Sea http://metadata.un.org/sdg/7 Ensure access to affordable reliable sustainable and modern energy for all Gambi, María Cristina Esposito, Valentina Marín-Guirao, Lázaro Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
topic_facet |
Posidonia oceanica Ocean acidification Hydrothermal vents Morphology Phenology Tyrrhenian Sea http://metadata.un.org/sdg/7 Ensure access to affordable reliable sustainable and modern energy for all |
description |
[EN] Very small-sized shoots of the Mediterranean seagrass Posidonia oceanica, defined as “bonsai” shoots, were found in areas with most intense CO2 emissions and low pH associated with four vents systems off Panarea island (Aeolian Archipelago, Sicily, Southern Tyrrhenian Sea). Bonsai shoots were sampled in September 2021 and October 2022: Bottaro crater (8 m depth), Camp 7 (16 m and 21 m), Black Point (20 m) and Hot/Cold Points (10 m). They had 2–6 leaves, and adult-intermediate leaves were 5–21 cm long and 3.5–7 mm wide, with leaf shoot surface ranging 4.8 and 44.5 cm2, and shoot leaf biomass between 16 and 89 mg (d.w.). These values were all significantly lower (t-test p < 0.006–0.0001) than those measured in normal-sized shoots collected within the vents and in control sites not affected by gas emissions. Bonsai shoots had 86–89% lower leaf surface, and 61–75% lower leaf biomass than all normal-sized shoots measured. The sheath thickness of the bonsai shoots was very low (0.1–0.8 mm), and the temporal trend of sheath thickness along the rhizome (lepidochronology) showed an irregular pattern, without the clear cyclical seasonal variation typical of normal-sized shoots. The reasons of size reduction and lack of temporal cycle in lepidochronology are discussed in the light of plant acclimatization and the constraints imposed by the continuous exposure to the stressful conditions of seawater acidification and presence of phytotoxic gases (e.g. hydrogen sulfide) in the vents. We wish to thank the staff of the 5th and 6th School of scientific diving at Panarea (2021–2022) and the 2nd stage on Posidonia oceanica ecology at Salina (2022; founded by the Blue Marine Foundation), as well as the diving Amphibia coordinated by Andrea Fogliuzzi, for the support at sea and in the laboratory. Thanks to the ECCSEL NatLab Italy infrastructure of the OGS for the logistic support at Panarea. We wish to thank the anonymous reviewers, and the Editor B. van Tussenbroek, for the useful and constructive comments. Peer ... |
author2 |
Blue Marine Foundation Marín-Guirao, Lázaro |
format |
Article in Journal/Newspaper |
author |
Gambi, María Cristina Esposito, Valentina Marín-Guirao, Lázaro |
author_facet |
Gambi, María Cristina Esposito, Valentina Marín-Guirao, Lázaro |
author_sort |
Gambi, María Cristina |
title |
Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
title_short |
Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
title_full |
Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
title_fullStr |
Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
title_full_unstemmed |
Posidonia bonsai: Dwarf Posidonia oceanica shoots associated to hydrothemal vent systems (Panarea Island, Italy) |
title_sort |
posidonia bonsai: dwarf posidonia oceanica shoots associated to hydrothemal vent systems (panarea island, italy) |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://hdl.handle.net/10261/286318 https://doi.org/10.1016/j.aquabot.2022.103611 https://api.elsevier.com/content/abstract/scopus_id/85144444785 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Aquatic Botany Preprint https://doi.org/10.1016/j.aquabot.2022.103611 Sí Aquatic Botany 185: 103611 (2023) 0304-3770 http://hdl.handle.net/10261/286318 doi:10.1016/j.aquabot.2022.103611 1879-1522 2-s2.0-85144444785 https://api.elsevier.com/content/abstract/scopus_id/85144444785 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.aquabot.2022.103611 |
container_title |
Aquatic Botany |
container_volume |
185 |
container_start_page |
103611 |
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1802648726291873792 |