Microbial population changes in the polluted coastal sediments of the Gulf of Finland, Baltic Sea

Polyak, Yulia; Медведева, Н. Г.; Gubclit, Y. I.; Dembska, Grażyna; Zegarowski, Łukasz; Sapota, Grażyna Pazikowska

doi:10.1109/baltic.2014.6887831

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Hassett et al., 2019; Majaneva et al., 2012; Rojas‐Jimenez et al., 2019; Vass et al., 2022) and benthic fungal diversity (see e.g. Miettinen et al., 2019; Polyak et al., 2014), only two described variation in pelagic fungal community structure between regions, mainly driven by environmental conditions such as salinity levels or nutrient concentration (Rojas‐Jimenez et al., 2019; Vass et al., 2022). Therefore, there is still a significant knowledge‐gap regarding benthic fungal diversity in the Baltic Sea and also on how environmental variables are shaping these benthic fungal communities.…”

Section: Introductionmentioning

confidence: 99%

Salinity and resource availability as drivers of Baltic benthic fungal diversity

Lobo,

Izabel‐Shen,

Albertsson

et al. 2024

Environmental DNA

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Marine biodiversity consists of a complex network of organisms responsible for keeping the ecosystem's balance. Fungi are an understudied group of organisms despite their recognized importance for ecosystem processes and diversity. How fungi respond to environmental change remains poorly understood, especially in marine benthic habitats. The Baltic Sea is a brackish coastal ecosystem with steep environmental gradients in a relatively limited geographical area and is therefore a particularly good system to investigate the impact of different abiotic factors on benthic fungal diversity. This study used environmental DNA (eDNA) metabarcoding to analyze the spatial dynamics of benthic fungal diversity in the Baltic Sea and quantify the environmental drivers that shape these dynamics. Based on 59 stations spreading over 1145 km the results showed that benthic fungal communities were dominated by the phylum Chytridiomycota, and the fungal species Alphamyces chaetifer and Operculomyces laminatus from this phylum were the main drivers of the community structure dissimilarities observed between regions. Water depth and salinity were the main predictors of the benthic fungal community composition. The impact of nutrient availability was also significant, possibly related to the known role of Chytridiomycota species such as A. chaetifer and O. laminatus in nutrient cycling. Our results indicate that the benthic fungal diversity of the Baltic Sea is shaped by salinity gradients and nutrient availability and highlights that the current fungal biodiversity is at risk of species shift or decline with predicted changes in salinity due to climate change and intensified eutrophication.

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Section: Introductionmentioning

confidence: 99%

Salinity and resource availability as drivers of Baltic benthic fungal diversity

Lobo,

Izabel‐Shen,

Albertsson

et al. 2024

Environmental DNA

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Can the “Green Tides” Affect the Metal Distribution in the Coastal Sediments? A Case Study in the Eastern Gulf of Finland, Baltic Sea

Gubelit

Polyak

Shigaeva

et al. 2020

Contemp. Probl. Ecol.

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Monitoring of the Gulf of Finland, Baltic Sea: Antropogenic Pressure on Biogeochemical , Processes in the Coastal Zone

Polyak¹,

Gubelit²,

Shigaeva³

et al. 2018

PEMEM

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Резюме. Мониторинговые исследования, проведенные в Финском заливе Балтийского моря, позволили установить, что техногенное воздействие на прибрежную зону приводит к изменению интенсивности и направленности биогеохимических процессов, протекающих в донных отложениях. В результате регулярного массового развития макроводорослей происходит дополнительное накопление металлов в донных отложениях прибрежной зоны, обусловленное возникающей гипоксией и выходом металлов из разлагающейся биомассы водорослей. Сукцессия микробных популяций проявляется в увеличении доли микроорганизмов, толерантных к металлам, а также микроорганизмов, способных к деструкции нефтяных углеводородов, и сопровождается изменением активности окислительно-восстановительных ферментов донных отложений. Выявлены основные антропогенные факторы, оказывающие влияние на активность микробиоты донных отложений, к числу которых относятся загрязнение медью, свинцом и нефтепродуктами. Ключевые слова. Балтийское море, мониторинг, донные отложения, металлы, нефтепродукты, Cladophora glomerata, микробиота, углеводородокисляющие бактерии, металл-толерантные бактерии, ферментативная активность.

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Microbial population changes in the polluted coastal sediments of the Gulf of Finland, Baltic Sea

Cited by 3 publications

References 10 publications

Salinity and resource availability as drivers of Baltic benthic fungal diversity

Salinity and resource availability as drivers of Baltic benthic fungal diversity

Can the “Green Tides” Affect the Metal Distribution in the Coastal Sediments? A Case Study in the Eastern Gulf of Finland, Baltic Sea

Monitoring of the Gulf of Finland, Baltic Sea: Antropogenic Pressure on Biogeochemical , Processes in the Coastal Zone

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