A year long in situ survey of HAB species and their respective metabolic activities in the Northern Adriatic Sea

Marić Pfannkuchen, Daniela; Smodlaka Tanković, Mirta; Knjaz, Mia; Vlašiček, Ivan; Baričević, Ana; Grižančić, Lana; Turković, Ariana; Podolšak, Ivan; Pfannkuchen, Martin A year long in situ survey of HAB species and their respective metabolic activities in the Northern Adriatic Sea. In: 21st International Conference on Harmful Algae, ICHA 2025; From HAB Science to Environmental Resilience; Abstract Book. p. 103 .

PDF (Sažetak izlaganja sa skupa) - other Download (316kB)

Abstract

The Northern Adriatic (NA) is a highly dynamic marine ecosystem, in which multiple environmental stressors, particularly phosphorus limitation, shape phytoplankton communities. A metatranscriptomic approach was used to investigate the taxonomic and functional dynamics of the NA phytoplankton community, focusing on toxic and potentially toxic species. Based on observed patterns of ecologically relevant molecular mechanisms and underlying physiological responses to environmental conditions, we unveiled contrasting life strategies and adaptations to ecological conditions. Monthly sampling from April 2021 to March 2022 was conducted at two stations, one coastal and one offshore. Metatranscriptomes were extracted from the collected samples, alongside the measurement of various environmental parameters. Analysis of annual patterns in taxonomic and functional community succession revealed an unexpected year-round dominance of dinoflagellates in terms of metabolic activity. Peaks in the metabolic activity of other studied groups aligned with the typical seasonal succession of species, as previously reported. Notably, the expected spring diatom bloom was not observed, whereas an autumn bloom dominated by Pseudo-nitzschia species was consistently detected.

Item Type:	Conference or workshop item published in conference proceedings (UNSPECIFIED)
Uncontrolled Keywords:	metatranscriptomics; HABs; phytoplankton
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Interdisciplinary Natural Sciences NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science
Divisions:	Center for Marine Research
Projects:	Project title Project leader Project code Project type Molekularne životne strategije fitoplanktona u Jadranu-Adri LIFE Daniela Marić Pfannkuchen UIP-2020-02-7868 HRZZ Životne strategije fitoplanktona u sjevernom Jadranu-P-limit Martin Pfannkuchen UIP-2014-09-6563 HRZZ
Depositing User:	dr.sc. Mia Knjaz
Date Deposited:	19 Jan 2026 08:58
URI:	http://fulir.irb.hr/id/eprint/10980

Actions (login required)

View Item