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Changes in food web dynamics of low arctic ponds with varying content of dissolved organic carbon
Názov Changes in food web dynamics of low arctic ponds with varying content of dissolved organic carbon Aut.údaje Heather L. Mariash, Matteo Cazzanelli ... [et al.] Autor Mariash Heather L. (20%)
Spoluautori Cazzanelli Matteo (20%)
Rautio Milla (20%)
Hamerlík Ladislav 1974- (20%) UMBFP09 - Katedra biológie a environmentálnych štúdií
Wooller Matthew J. (10%)
Christoffersen Kirsten Seestern (10%)
Zdroj.dok. Arctic, Antarctic, and Alpine Research : An Interdisciplinary Journal. Vol. 50, no. 1 (2018), art. no. e1414472. - Boulder : University of Colorado, 2018 Kľúč.slová sladkovodná ekológia - freshwater ecology plankton stable isotopes Jazyk dok. angličtina Krajina Veľká Británia Systematika 574 Anotácia An influx of terrestrial dissolved organic carbon (DOC) into freshwater habitats can regulate a range of ecosystem characteristics, from water clarity to productivity. To understand the extent to which DOC can regulate ecosystem functioning, we conducted a survey to determine the source of DOC in low Arctic ponds close to the Arctic Circle (Kangerlussuaq, Greenland), including its role in food web dynamics. We used a multiple element (carbon, nitrogen, and hydrogen) stable isotope approach to examine the proportional contribution of different sources to aquatic consumers in nine arctic ponds that spanned a broad gradient of DOC (6.6–60.1 mgL-1). Our results show that benthic and pelagic primary production decreased along a gradient of increasing DOC content. Additionally, the changes in the organic matter pool with increasing DOC translated into changes in consumer resource use. We found significant differences in resource use between species. All consumers relied on benthic autotrophic material when DOC was low; but when DOC was high some consumers changed their diet. Collectively, our findings demonstrate how the concentration of DOC influences aquatic production and our study can be used as a baseline to predict how the aquatic food web may respond to regionally changing DOC concentrations URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 43885 Kategória ohlasu BOMBERG, Malin - LILJEDAHL, Lillemor Claesson - LAMMINMAKI, Tiina - KONTULA, Anne. Highly diverse aquatic microbial communities separated by permafrost in Greenland show distinct features according to environmental niches. In Frontiers in microbiology. ISSN 1664-302X, 2019, vol. 10, article no. 1583, pp. 1-20.
OSBURN, Christopher L. - ANDERSON, N. John - LENG, Melanie J. - BARRY, Christopher D. - WHITEFORD, Erika J. Stable isotopes reveal independent carbon pools across an Arctic hydro-climatic gradient : implications for the fate of carbon in warmer and drier conditions. In Limnology and oceanography letters. ISSN 2378-2242, 2019, vol. 4, no. 6, pp. 205-213.
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YDE, Jacob C. - ANDERSON, N. John - POST, Eric - SAROS, Jasmine E. - TELLING, Jon. Environmental change and impacts in the Kangerlussuaq area, west Greenland. In arctic antarctic and alpine research. ISSN 1523-0430, 2018, vol. 50, no. 1, pp. 1-6.
KIVILA, E. Henriikka - LUOTO, Tomi P. - RANTALA, Marttiina - NEVALAINEN, Liisa. Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web. In Hydrobiologia. ISSN 0018-8158, 2020, vol. 847, no. 3, pp. 895-911.
LINDBORG, Tobias - RYDBERG, Johan - ANDERSSON, Eva - LOFGREN, Anders - LINDBORG, Emma - SAETRE, Peter - SOHLENIUS, Gustav - BERGLUND, Sten - KAUTSKY, Ulrik - LAUDON, Hjalmar. A carbon mass-balance budget for a periglacial catchment in West Greenland Linking the terrestrial and aquatic systems. In Science of the total environment. ISSN 0048-9697, 2020, vol. 711, art. no. 134561, pp. 1-19.
BURPEE, Benjamin T. - SAROS, Jasmine E. Cross-ecosystem nutrient subsidies in Arctic and alpine lakes: implications of global change for remote lakes. In Environmental science-processes and impacts. ISSN 2050-7887, 2020, vol. 22, no. 5, pp. 1166-1189.
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