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Pregled bibliografske jedinice broj: 1085000

Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic


Budiša, Andrea; Paliaga, Paolo; Dautović, Jelena; Djakovac, Tamara; Ciglenečki, Irena
Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic // Neobiota 2020 Book of Abstracts / Jelaska, Sven D. (ur.).
Zagreb: Hrvatsko ekološko društvo, 2020. str. 82-82 (poster, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 1085000 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic

Autori
Budiša, Andrea ; Paliaga, Paolo ; Dautović, Jelena ; Djakovac, Tamara ; Ciglenečki, Irena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Neobiota 2020 Book of Abstracts / Jelaska, Sven D. - Zagreb : Hrvatsko ekološko društvo, 2020, 82-82

ISBN
978-953-6202-15-7

Skup
11th International Conference on Biological Invasions NEOBIOTA 2020

Mjesto i datum
Vodice, Hrvatska, 15.-18.9.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Mnemiopsis leidyi ; heterotrophic prokaryotes ; cyanobacteria ; heterotrophic nanoflagellates ; organic matter ; microbial loop

Sažetak
Seasonal invasions of ctenophore Mnemiopsis leidyi in the Adriatic are recorded since 2016, affecting zooplankton and fish stocks. M. leidyi is known to release significant quantities of their total excreta as labile dissolved organic carbon which support and control microbial production. Pico- and nanoplankton at the fundaments of the marine food web can alter their activity and community structure by utilising labile organic substrates. Besides, their rapid response to environmental disturbances can indicate ecosystem perturbations. The influence of invasive blooms on the microbial community was investigated at five locations in the coastal waters of Rovinj (Croatia), in 2019. The abundance of M. leidyi was determined by visual census at the sea surface. Heterotrophic prokaryotes (HP), cyanobacteria (CB) and heterotrophic nanoflagellates (HNF), were enumerated by epifluorescence microscopy. Dissolved (DOC) and particulate organic carbon (POC) were measured by standard HTCO method. Ctenophore displayed a patchy distribution ranging from 0.05-100 M. leidyi/m3. The microbial community mirrored a similar spatial pattern, indicating coupling between them. Indeed, HP, CB and HNF were significantly more abundant at ctenophore concentrations ≥ 1 M. leidyi/m3, increasing in numbers where M. leidyi was more abundant. In the absence of ctenophore, values ranged: 0.08- 0.9∙10^6 HP/mL, 2.6-6.5∙10^4 CB/mL and 2.6- 9.8∙10^3 HNF/mL, while maximums of about 1.7∙10^6 HP/mL, 10^6 CB/mL, and 3.3∙10^4 HNF/mL, were found in swarms. Carbon content (DOC, POC) was also found to be higher in swarms. It appears that HP utilises DOC resulting in increased concentration of nutrients due to enhanced remineralisation. Consequentially, released nutrients might stimulate CB growth. Greater abundances of HP and CB are consumed by HNF and sustain their rise in abundance. We conclude that intensive blooms of M. leidyi influence major components of pico- and nanoplankton, releasing dissolved surface-active organic matter that stimulates and fuels the microbial loop.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne prirodne znanosti



POVEZANOST RADA


Ustanove:
Institut "Ruđer Bošković", Zagreb,
Sveučilište Jurja Dobrile u Puli

Citiraj ovu publikaciju:

Budiša, Andrea; Paliaga, Paolo; Dautović, Jelena; Djakovac, Tamara; Ciglenečki, Irena
Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic // Neobiota 2020 Book of Abstracts / Jelaska, Sven D. (ur.).
Zagreb: Hrvatsko ekološko društvo, 2020. str. 82-82 (poster, međunarodna recenzija, sažetak, znanstveni)
Budiša, A., Paliaga, P., Dautović, J., Djakovac, T. & Ciglenečki, I. (2020) Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic. U: Jelaska, S. (ur.)Neobiota 2020 Book of Abstracts.
@article{article, author = {Budi\v{s}a, Andrea and Paliaga, Paolo and Dautovi\'{c}, Jelena and Djakovac, Tamara and Ciglene\v{c}ki, Irena}, editor = {Jelaska, S.}, year = {2020}, pages = {82-82}, keywords = {Mnemiopsis leidyi, heterotrophic prokaryotes, cyanobacteria, heterotrophic nanoflagellates, organic matter, microbial loop}, isbn = {978-953-6202-15-7}, title = {Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic}, keyword = {Mnemiopsis leidyi, heterotrophic prokaryotes, cyanobacteria, heterotrophic nanoflagellates, organic matter, microbial loop}, publisher = {Hrvatsko ekolo\v{s}ko dru\v{s}tvo}, publisherplace = {Vodice, Hrvatska} }
@article{article, author = {Budi\v{s}a, Andrea and Paliaga, Paolo and Dautovi\'{c}, Jelena and Djakovac, Tamara and Ciglene\v{c}ki, Irena}, editor = {Jelaska, S.}, year = {2020}, pages = {82-82}, keywords = {Mnemiopsis leidyi, heterotrophic prokaryotes, cyanobacteria, heterotrophic nanoflagellates, organic matter, microbial loop}, isbn = {978-953-6202-15-7}, title = {Microbial response to the presence of invasive ctenophore Mnemiopsis leidyi in the coastal waters of the northern Adriatic}, keyword = {Mnemiopsis leidyi, heterotrophic prokaryotes, cyanobacteria, heterotrophic nanoflagellates, organic matter, microbial loop}, publisher = {Hrvatsko ekolo\v{s}ko dru\v{s}tvo}, publisherplace = {Vodice, Hrvatska} }




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