A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The second life of terrestrial and plastic carbon as nutritionally valuable food for aquatic consumers
Tekijät: Taipale, S. J.; Rigaud, C.; Calderini, M. L.; Kainz, M. J.; Pilecky, M.; Uusi-Heikkilä, S.; Vesamäki, J. S.; Vuorio, K.; Tiirola, M.
Kustantaja: WILEY
Kustannuspaikka: HOBOKEN
Julkaisuvuosi: 2023
Journal: Ecology Letters
Tietokannassa oleva lehden nimi: ECOLOGY LETTERS
Lehden akronyymi: ECOL LETT
Sivujen määrä: 12
ISSN: 1461-023X
eISSN: 1461-0248
DOI: https://doi.org/10.1111/ele.14244
Tiivistelmä
Primary production is the basis for energy and biomolecule flow in food webs. Nutritional importance of terrestrial and plastic carbon via mixotrophic algae to upper trophic level is poorly studied. We explored this question by analysing the contribution of osmo- and phagomixotrophic species in boreal lakes and used C-13-labelled materials and compound-specific isotopes to determine biochemical fate of carbon backbone of leaves, lignin-hemicellulose and polystyrene at four-trophic level experiment. Microbes prepared similar amounts of amino acids from leaves and lignin, but four times more membrane lipids from lignin than leaves, and much less from polystyrene. Mixotrophic algae (Cryptomonas sp.) upgraded simple fatty acids to essential omega-3 and omega-6 polyunsaturated fatty acids. Labelled amino and fatty acids became integral parts of cell membranes of zooplankton (Daphnia magna) and fish (Danio rerio). These results show that terrestrial and plastic carbon can provide backbones for essential biomolecules of mixotrophic algae and consumers at higher trophic levels.
Primary production is the basis for energy and biomolecule flow in food webs. Nutritional importance of terrestrial and plastic carbon via mixotrophic algae to upper trophic level is poorly studied. We explored this question by analysing the contribution of osmo- and phagomixotrophic species in boreal lakes and used C-13-labelled materials and compound-specific isotopes to determine biochemical fate of carbon backbone of leaves, lignin-hemicellulose and polystyrene at four-trophic level experiment. Microbes prepared similar amounts of amino acids from leaves and lignin, but four times more membrane lipids from lignin than leaves, and much less from polystyrene. Mixotrophic algae (Cryptomonas sp.) upgraded simple fatty acids to essential omega-3 and omega-6 polyunsaturated fatty acids. Labelled amino and fatty acids became integral parts of cell membranes of zooplankton (Daphnia magna) and fish (Danio rerio). These results show that terrestrial and plastic carbon can provide backbones for essential biomolecules of mixotrophic algae and consumers at higher trophic levels.
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