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Fatty acid and elemental composition of littoral “green tide” algae from the Gulf of Finland, the Baltic Sea / Y. I. Gubelit [et al.] // J. Appl. Phycol. - 2014. - Vol. 27, Is. 1. - P375-386, DOI 10.1007/s10811-014-0349-8 . - ISSN 0921-8971
Кл.слова (ненормированные):
Cladophora glomerata -- Coastal eutrophication -- Essential PUFA -- Green tides -- Ulva intestinalis
Аннотация: Coastal eutrophication leads to a shift in primary producer communities from perennial species to ephemeral fast-growing species of macroalgae, which is known as “green tides” phenomenon. In brackish water habitats of the Baltic Sea, the opportunistic green algae, Cladophora glomerata and Ulva intestinalis, replaced the brown alga Fucus vesiculosus, while in freshwater estuarine parts they replaced epilithic microalgae. We studied Baltic populations of the macroalgae, C. glomerata and U. intestinalis, and epilithic and epiphytic microalgae, with respect to their nutritive quality, such as content of essential polyunsaturated fatty acids (PUFAs) and elemental composition. Fatty acid profiles of the two macroalgae were significantly different, including levels of essential PUFAs. We found a relatively high content of eicosapentaenoic acid (EPA; 20:5n−3) in C. glomerata biomass (4.14 mg g−1 C), whereas U. intestinalis had a lower value (0.45 mg g−1 C). Comparison with literature data showed that C. glomerata appeared to be a more valuable food for potential invertebrate consumers in respect to EPA content and stoichiometric C/P ratio than perennial F. vesiculosus and U. intestinalis. Thus, replacement of F. vesiculosus and epilithic microalgae by C. glomerata would not decrease the potential nutritive value of coastal algal communities for invertebrates. In turn, if U. intestinalis dominate in algal community, the nutritive value of primary producers in coastal zone would decrease. However, in following works, other important indicators of nutritive value, such as sterols and amino acids, should be included in the estimations of green tide algae species. © 2014, Springer Science+Business Media Dordrecht.

Scopus
Держатели документа:
Zoological Institute of the Russian Academy of Science, Universitetskaya emb. 1, Saint Petersburg, Russian Federation
Institute of Biophysics of Siberian Branch of the Russian Academy of Science, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gubelit, Y. I.; Makhutova, O. N.; Sushchik, N. N.; Kolmakova, A. A.; Kalachova, G. S.; Gladyshev, M. I.

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Green Tides: New Consequences of the Eutrophication of Natural Waters (Invited Review) / M. I. Gladyshev, Y. I. Gubelit // Contemp. Probl. Ecol. - 2019. - Vol. 12, Is. 2. - P109-125, DOI 10.1134/S1995425519020057. - Cited References:134. - This study was supported by a state task as part of fundamental research program of the Russian Federation no. VI. 51.1.9, no. 6.1504.2017/PCh, and no. AAAA-A19-119020690091-0. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
CLADOPHORA-GLOMERATA CHLOROPHYTA
BENTHIC ALGAL COMMUNITY
MACROALGAL
Кл.слова (ненормированные):
nuisance algal blooms -- Ulva -- Cladophora -- Spirogyra -- metaphyton -- benthification
Аннотация: In recent decades, alongside the comparatively well-studied bloom caused by phytoplankton, a bloom of marine and fresh waters caused by littoral benthic macroalgae of three generaUlva, Cladophora, and Spirogyrahave become a global phenomenon. In the present review, an attempt is made to gain an understanding of why it is these taxa of green filamentous algae that start to grow rapidly in the spring in many water bodies and streams, including oligotrophic waters, and then float up from the bottom, forming floating mats (metaphyton); then their decaying masses are washed ashore and cause substantial ecological and economical losses. Peculiar and common ecological and physiological features of Ulva, Cladophora, and Spirogyra favorable for the formation of green tides are considered. Although eutrophication (the supply of nitrogen and phosphorus from agricultural lands, industrial and domestic wastewaters, and aquaculture) is the evident cause of the increase in algal biomass, it is suggested that the location of external fluxes of inorganic nutrients (surface runoff or groundwater discharge), as well as the biogenic redirection of internal fluxes of nitrogen and phosphorus from pelagial to littoral (benthification), play a key role in the formation of green tides. Measures for controlling green tides are discussed. The necessity for detailed studies of the metaphytonic form of vegetation of benthic macroalgae is emphasized. Obviously, a revision of the present concept of oligotrophic/eutrophic waters which considers only the pelagic compartments of aquatic ecosystems is required.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Zool Inst, St Petersburg 199034, Russia.

Доп.точки доступа:
Gladyshev, M. I.; Gubelit, Y. I.; state task as part of fundamental research program of the Russian Federation [51.1.9, 6.1504.2017/PCh, AAAA-A19-119020690091-0]

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