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Article: Nitrogen sufficiency enhances thermal tolerance in habitat-forming kelp: implications for acclimation under thermal stress

TitleNitrogen sufficiency enhances thermal tolerance in habitat-forming kelp: implications for acclimation under thermal stress
Authors
KeywordsKelp
Laminariales
Macrocystis
Issue Date2020
PublisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html
Citation
Scientific Reports, 2020, v. 10, p. article no. 3186 How to Cite?
AbstractLocal and global changes associated with anthropogenic activities are impacting marine and terrestrial ecosystems. Macroalgae, especially habitat-forming species like kelp, play critical roles in temperate coastal ecosystems. However, their abundance and distribution patterns have been negatively affected by warming in many regions around the globe. Along with global change, coastal ecosystems are also impacted by local drivers such as eutrophication. The interaction between global and local drivers might modulate kelp responses to environmental change. This study examines the regulatory effect of NO3− on the thermal plasticity of the giant kelp Macrocystis pyrifera. To do this, thermal performance curves (TPCs) of key temperature-dependant traits–growth, photosynthesis, NO3− assimilation and chlorophyll a fluorescence–were examined under nitrate replete and deplete conditions in a short-term incubation. We found that thermal plasticity was modulated by NO3− but different thermal responses were observed among traits. Our study reveals that nitrogen, a local driver, modulates kelp responses to high seawater temperatures, ameliorating the negative impacts on physiological performance (i.e. growth and photosynthesis). However, this effect might be species-specific and vary among biogeographic regions – thus, further work is needed to determine the generality of our findings to other key temperate macroalgae that are experiencing temperatures close to their thermal tolerance due to climate change.
Persistent Identifierhttp://hdl.handle.net/10722/290252
ISSN
2020 Impact Factor: 4.379
2020 SCImago Journal Rankings: 1.240
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFernandez, PA-
dc.contributor.authorGaitan Espitia, JD-
dc.contributor.authorLeal, PP-
dc.contributor.authorSchmid, M-
dc.contributor.authorRevill, AT-
dc.contributor.authorHurd, CL-
dc.date.accessioned2020-10-22T08:24:09Z-
dc.date.available2020-10-22T08:24:09Z-
dc.date.issued2020-
dc.identifier.citationScientific Reports, 2020, v. 10, p. article no. 3186-
dc.identifier.issn2045-2322-
dc.identifier.urihttp://hdl.handle.net/10722/290252-
dc.description.abstractLocal and global changes associated with anthropogenic activities are impacting marine and terrestrial ecosystems. Macroalgae, especially habitat-forming species like kelp, play critical roles in temperate coastal ecosystems. However, their abundance and distribution patterns have been negatively affected by warming in many regions around the globe. Along with global change, coastal ecosystems are also impacted by local drivers such as eutrophication. The interaction between global and local drivers might modulate kelp responses to environmental change. This study examines the regulatory effect of NO3− on the thermal plasticity of the giant kelp Macrocystis pyrifera. To do this, thermal performance curves (TPCs) of key temperature-dependant traits–growth, photosynthesis, NO3− assimilation and chlorophyll a fluorescence–were examined under nitrate replete and deplete conditions in a short-term incubation. We found that thermal plasticity was modulated by NO3− but different thermal responses were observed among traits. Our study reveals that nitrogen, a local driver, modulates kelp responses to high seawater temperatures, ameliorating the negative impacts on physiological performance (i.e. growth and photosynthesis). However, this effect might be species-specific and vary among biogeographic regions – thus, further work is needed to determine the generality of our findings to other key temperate macroalgae that are experiencing temperatures close to their thermal tolerance due to climate change.-
dc.languageeng-
dc.publisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html-
dc.relation.ispartofScientific Reports-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectKelp-
dc.subjectLaminariales-
dc.subjectMacrocystis-
dc.titleNitrogen sufficiency enhances thermal tolerance in habitat-forming kelp: implications for acclimation under thermal stress-
dc.typeArticle-
dc.identifier.emailGaitan Espitia, JD: jdgaitan@hku.hk-
dc.identifier.authorityGaitan Espitia, JD=rp02384-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41598-020-60104-4-
dc.identifier.pmid32081970-
dc.identifier.pmcidPMC7035356-
dc.identifier.scopuseid_2-s2.0-85079824620-
dc.identifier.hkuros316787-
dc.identifier.volume10-
dc.identifier.spagearticle no. 3186-
dc.identifier.epagearticle no. 3186-
dc.identifier.isiWOS:000570140700001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl2045-2322-

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