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Charophytes collaps...
Charophytes collapse beyond a critical warming and brownification threshold in shallow lake systems
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- Choudhury, Maidul I. (författare)
- Sveriges lantbruksuniversitet,Swedish University of Agricultural Sciences,Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Lund Univ, Dept Biol Aquat Ecol, Ecol Bldg, SE-22362 Lund, Sweden;Swedish Univ Agr Sci, Dept Aquat Sci & Environm Assessment, Box 7050, S-75007 Uppsala, Sweden,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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- Urrutia-Cordero, Pablo (författare)
- Uppsala universitet,Uppsala University,Helmholtz Institute for Functional Marine Biodiversity,Carl von Ossietzky University of Oldenburg,Limnologi,HIFMB, Ammerlander Heerstr 231, D-26129 Oldenburg, Germany;Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm ICBM, Schleusenstr 1, D-26382 Wilhelmshaven, Germany
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- Zhang, Huan (författare)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Institute of Hydrobiology, Chinese Academy of Sciences,Lund Univ, Dept Biol Aquat Ecol, Ecol Bldg, SE-22362 Lund, Sweden;Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
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- Ekvall, Mattias K. (författare)
- Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,Region Skåne,Lund Univ, Dept Biol Aquat Ecol, Ecol Bldg, SE-22362 Lund, Sweden;Cty Adm Board Skane Environm & Climate, Sodergaten 5, S-20515 Malmo, Sweden
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- Medeiros, Leonardo Rafael (författare)
- Lund University,Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte,Lund Univ, Dept Biol Aquat Ecol, Ecol Bldg, SE-22362 Lund, Sweden;Fed Inst Educ Sci & Technol Rio Grande do Norte I, BR-59508000 Mossoro, RN, Brazil
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- Hansson, Lars Anders (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Other operations, LTH,Faculty of Engineering, LTH,Division aquatic ecology,Department of Biology,Faculty of Science,Lund Univ, Dept Biol Aquat Ecol, Ecol Bldg, SE-22362 Lund, Sweden
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(creator_code:org_t)
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- Elsevier BV, 2019
- 2019
- Engelska 7 s.
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Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697 .- 1879-1026. ; 661, s. 148-154
- Relaterad länk:
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http://dx.doi.org/10...
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https://epic.awi.de/...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://res.slu.se/i...
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Abstract
Ämnesord
Stäng
- Charophytes play a critical role for the functioning of shallow lake ecosystems. Although growth of charophytes can be limited by many factors, such as temperature, nutrients and light availability, our understanding about concomitant effects of climate warming and other large-scale environmental perturbations, e.g. increases in humic matter content (‘brownification’) is still limited. Here we conducted an outdoor mesocosm experiment during 71 days with a common charophyte species, Chara vulgaris, along an increasing gradient of temperature and brownification. We hypothesized the growth of C. vulgaris to increase with temperature, but to level off along the combined temperature and brownification gradient when reaching a critical threshold for light limitation via brownification. We show that C. vulgaris increases the relative growth rate (RGR), main and total shoot elongation, as well as number of lateral shoots when temperature and brownification increased by +2 °C and + 100%, respectively above today's levels. However, the RGR, shoot elongation and number of lateral shoots declined at further increment of temperature and brownification. Macrophyte weight-length ratio decreased with increased temperature and brownification, indicating that C. vulgaris allocate more resources or energy for shoot elongation instead of biomass increase at warmer temperatures and higher brownification. Our study shows that C. vulgaris will initially benefit from warming and brownification but will then decline as a future scenario of increased warming and brownification reaches a certain threshold level, in case of our experiment at +4 °C and a 2-fold increase in brownification above today's levels.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Nyckelord
- Chara vulgaris
- Climate change
- Freshwater
- Growth rate
- Humic substances
- Mesocosm
- Morphology
- Submerged macrophyte
- Climate change
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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