| Autor: |
Abigail R. Meyer, Maria Valentin, Laima Liulevicius, Tami R. McDonald, Matthew P. Nelsen, Jean Pengra, Robert J. Smith, Daniel Stanton |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
American journal of botany. |
| ISSN: |
1537-2197 |
| Popis: |
The long-term potential for acclimation by lichens to changing climates is poorly known, despite their prominent roles in forested ecosystems. Although often considered "extremophiles", lichens may not readily acclimate to novel climates well beyond historical norms. In a previous study (Smith et al. 2018), Evernia mesomorpha transplants in a whole-ecosystem climate change experiment showed drastic mass loss after one year of warming and drying, however the causes of this mass loss were not addressed.We examined the causes of this warming-induced mass loss by measuring physiological, functional, and reproductive attributes of lichen transplants.Severe loss of mass and physiological function occurred above +2ºC of experimental warming. Loss of algal symbionts ("bleaching") and turnover in algal community compositions increased with temperature and were the clearest impacts of experimental warming. Enhanced COThe strong negative impacts of warming and/or lower humidity on Evernia mesomorpha were driven by a loss of photobiont activity. Analogous to the effects of climate change on corals, the balance of symbiont carbon metabolism in lichens is central to their resilience to changing conditions. This article is protected by copyright. All rights reserved. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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