Unveiling Phytoplankton Diversity: Taxonomy, Functional Groups, and Environmental Drivers in North China Lakes DOI Creative Commons
Wei Wang,

Hanjie Huang,

Zhongshi He

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(12), P. 1 - 15

Published: Dec. 1, 2024

ABSTRACT Functional groups (FGs) represent a classification scheme designed to study the ecological adaptations of phytoplankton. However, FG dynamics studies in phytoplankton are often conducted independent taxonomic studies, so factors influencing community have not been sufficiently investigated or compared between two systems. In this study, we intricate relationship and compositions North China lakes delve into key environmental drivers shaping dynamics. This investigation revealed that classifications exhibit high qualitative quantitative similarities structure. Environmental had stronger influence on structure than composition, indicating does result loss information regarding structure, even with reduced number grouping units. Indeed, it was evident FGs contained larger quantity information. These conclusions were further verified using eastern China. Additionally, found climatic–geographical usually exerted indirect influences, by altering water chemistry, while chemical more direct influences. The combined effects both types greater impact composition. conclusion, believe an in‐depth will better focus characteristics phytoplankton, also avoiding need for extensive species identification.

Language: Английский

Modeling freshwater plankton community dynamics with static and dynamic interactions using graph convolution embedded long short-term memory DOI
Hyo Gyeom Kim,

Eun-Young Jung,

Heewon Jeong

et al.

Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122401 - 122401

Published: Sept. 6, 2024

Language: Английский

Citations

9
Mock community experiments can inform on the reliability of eDNA metabarcoding data: a case study on marine phytoplankton DOI Creative Commons
Nadia Marinchel, Alexis Marchesini, Davide Nardi

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Nov. 17, 2023

Environmental DNA metabarcoding is increasingly implemented in biodiversity monitoring, including phytoplankton studies. Using 21 mock communities composed of seven unicellular diatom and dinoflagellate algae, assembled with different composition abundance by controlling the number cells, we tested accuracy an eDNA protocol reconstructing patterns alpha beta diversity. This approach allowed us to directly evaluate both qualitative quantitative estimates. Our results showed non-negligible rates (17-25%) false negatives (i.e., failure detect a taxon community where it was included), for three taxa. led statistically significant underestimation metabarcoding-derived diversity (Wilcoxon p = 0.02), detected species richness being lower than expected (based on cell numbers) 8/21 communities. Considering diversity, correlation between dissimilarities but not strong (R2 0.41), indicating suboptimal results. Average biovolume rDNA gene copy were estimated taxa, highlighting potential, though exhaustive, role latter explaining recorded biases. findings highlight importance assessing reliability studies identifying their limitations.

Language: Английский

Citations

18
Evolution of Freshwater Runoff in the Western Adriatic Sea over the Last Century DOI Open Access

Teresa Sani,

Mauro Marini, Alessandra Campanelli

et al.

Environments, Journal Year: 2024, Volume and Issue: 11(1), P. 22 - 22

Published: Jan. 20, 2024

The evaluation of the hydrography and biogeochemistry Adriatic Sea over last century was summarized in this review to point out any changes river runoff provide an overview cause effect these trends on marine ecosystems. Although several rivers flow into Adriatic, most affected area is northern where Po River loads basin half total freshwater input, carrying causing algal blooms hypoxia phenomena. These fresh waters predominantly along entire western side, reaching southernmost part up Mediterranean Sea. Here, whole basin, variations nutrient concentration have been observed through years. Starting from 1960 until end century, increase discharge phytoplankton activity reported, with negative repercussions local fisheries, species richness, recreational activities within basin. However, a recent decrease inflow has coastal belt, which can trigger consequences for food web ecosystem. trends, more broadly, corroborate vulnerability stress importance implementing strategies defense relevant ecosystems its confines.

Language: Английский

Citations

7
The Role of Nitrogen and Phosphorus in Eutrophication of the Northern Adriatic Sea: History and Future Scenarios DOI Creative Commons
Mauro Marini, Federica Grilli

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(16), P. 9267 - 9267

Published: Aug. 15, 2023

In the last two decades of 21st century, a gradual decrease in nitrogen and phosphorus has been observed along coastal area Northern Adriatic Sea. This depletion is attributed to reduced river flows. Studies conducted over past four have indicated that N/P ratio open sea unlikely undergo significant change. fact, it tends increase due unique characteristics Sea, which experiences slow water turnover influenced by strong winds. Additionally, Sea receives substantial amount freshwater from rivers, accounting for about one-third total flow into Mediterranean. These rivers carry nutrient loads contribute high productivity abundance fish this sea, making one most productive areas It cessation anthropogenic input, regulated since late 1980s with legislation limiting its use detergents, significantly affected trophic chain. The aim review provide an overview eutrophication trend highlighting importance long-term data series.

Language: Английский

Citations

10
Graph-based deep learning for predictions on changes in microbiomes and biogas production in anaerobic digestion systems DOI
Hyo Gyeom Kim,

Sung Il Yu,

Seung Gu Shin

et al.

Water Research, Journal Year: 2025, Volume and Issue: 274, P. 123144 - 123144

Published: Jan. 14, 2025

Language: Английский

Citations

0
Cluster analysis of long-term phytoplankton data from the Northern Adriatic reveals environmental influences and disruptions in seasonal patterns DOI Creative Commons
Ivan Vlašiček, Daniela Marić Pfannkuchen, Mirta Smodlaka Tanković

et al.

Frontiers in Ecology and Evolution, Journal Year: 2025, Volume and Issue: 13

Published: March 3, 2025

The Northern Adriatic is a dynamic and the most productive part of Sea. phytoplankton is, as many studies in this area showed, under heavy influence freshwater inputs anthropogenic pressures. Cluster analysis more than 20 year data set across steep spatio-temporal, ecological gradients on longitudinal transect northern Adriatic, allowed us to identify significant reoccurring species assemblages. Those clusters show stable seasonality relation environmental conditions are presumed be cornerstones important ecosystem services provided by phytoplankton. Our results demonstrate that disrupted, leading destabilisation seasonal patterns biodiversity primary producers. During last years, characterised dominating were replaced coexistence several species. Overall frequency dense blooms single appears decline. Multivariate showed possible reasons might lie oligotrophication increased salinity dynamics. suggest importance applicability cluster taxon based long term sets elucidate functional changes.

Language: Английский

Citations

0
Ocean warming, marine heatwaves and phytoplankton biomass: long-term trends in the Northern Adriatic Sea DOI
Francesca Neri, Angela Garzia, Marika Ubaldi

et al.

Estuarine Coastal and Shelf Science, Journal Year: 2025, Volume and Issue: unknown, P. 109282 - 109282

Published: March 1, 2025

Language: Английский

Citations

0
Phytoplankton Assemblage over a 14-Year Period in the Adriatic Sea: Patterns and Trends DOI Creative Commons
Sanda Skejić, Blanka Roje, Frano Matić

et al.

Biology, Journal Year: 2024, Volume and Issue: 13(7), P. 493 - 493

Published: July 2, 2024

Considering the role of phytoplankton in functioning and health marine systems, it is important to characterize its responses a changing environment. The central Adriatic Sea, as generally oligotrophic area, suitable environment distinguish between regular fluctuations those caused by anthropogenic or climatic influences. This study provides long-term perspective assemblage eastern with 14 years continuous time series data collected at two coastal offshore stations. predominant groups were diatoms phytoflagellates, but their proportion varied depending on vicinity coast, evidenced also distribution chlorophyll

Language: Английский

Citations

3
Structural variability of protist assemblages in surface sediments across Italian Mediterranean marine subregions DOI Creative Commons
Nadia Marinchel, Silvia Casabianca, Alexis Marchesini

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Sept. 2, 2024

Marine sediments host heterogeneous protist communities consisting of both living benthic microorganisms and planktonic resting stages. Despite their key functions in marine ecosystem processes biogeochemical cycles, structure dynamics are largely unknown. In the present study, with a spatially intensive sampling design we investigated diversity function surface sediment samples from three subregions Mediterranean Sea, through an environmental DNA metabarcoding approach targeting 18S V4 region rRNA gene. Protists were characterized at taxonomic level trophic function, terms alpha community composition, testing for potential differences among bathymetric groups. Overall, Alveolata Stramenopiles two divisions that dominated communities. These dominant groups exhibited significant estimates based on detected ASVs, all computed indices (ASV richness, Shannon Simpson indices). Protist also found to be significantly different composition order rank p-value < 0.01). mainly driven by Anoecales, Peridiniales, Borokales, Paraliales Gonyaulacales, which together contributed almost 80% average dissimilarity. Anoecales was Ionian – Central Adriatic but considerably relative abundances (52% 36%, respectively), while Borokales Western Sea (33%). Similarly, highlighted when assemblages examined (calculated ASVs each group) 0.01. particular, stood out having highest abundance autotrophic/mixotrophic components analyzed. Conversely, no depth This study provided new insights into sediments, revealing geographical regional seas. The results discussed relation features could generate

Language: Английский

Citations

3
Comparative analysis of phytoplankton diversity using microscopy and metabarcoding: insights from an eLTER station in the Northern Adriatic Sea DOI Creative Commons
Francesca Neri, Marika Ubaldi, Stefano Accoroni

et al.

Hydrobiologia, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

Language: Английский

Citations

2