Show simple item record

dc.contributor.authorReef, Ruth
dc.contributor.authorWinter, Klaus
dc.contributor.authorMorales, Jorge
dc.contributor.authorAdame, Maria Fernanda
dc.contributor.authorReef, Dana L
dc.contributor.authorLovelock, Catherine E
dc.date.accessioned2017-12-15T03:47:00Z
dc.date.available2017-12-15T03:47:00Z
dc.date.issued2015
dc.identifier.issn0031-9317
dc.identifier.doi10.1111/ppl.12289
dc.identifier.urihttp://hdl.handle.net/10072/124984
dc.description.abstractBy increasing water use efficiency and carbon assimilation, increasing atmospheric CO2 concentrations could potentially improve plant productivity and growth at high salinities. To assess the effect of elevated CO2 on the salinity response of a woody halophyte, we grew seedlings of the mangrove Avicennia germinans under a combination of five salinity treatments [from 5 to 65 parts per thousand (ppt)] and three CO2 concentrations (280, 400 and 800 ppm). We measured survivorship, growth rate, photosynthetic gas exchange, root architecture and foliar nutrient and ion concentrations. The salinity optima for growth shifted higher with increasing concentrations of CO2, from 0 ppt at 280 ppm to 35 ppt at 800 ppm. At optimal salinity conditions, carbon assimilation rates were significantly higher under elevated CO2 concentrations. However, at salinities above the salinity optima, salinity had an expected negative effect on mangrove growth and carbon assimilation, which was not alleviated by elevated CO2, despite a significant improvement in photosynthetic water use efficiency. This is likely due to non-stomatal limitations to growth at high salinities, as indicated by our measurements of foliar ion concentrations that show a displacement of K+ by Na+ at elevated salinities that is not affected by CO2. The observed shift in the optimal salinity for growth with increasing CO2 concentrations changes the fundamental niche of this species and could have significant effects on future mangrove distribution patterns and interspecific interactions.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley-Blackwell Publishing
dc.relation.ispartofpagefrom358
dc.relation.ispartofpageto368
dc.relation.ispartofissue3
dc.relation.ispartofjournalPhysiologia Plantarum
dc.relation.ispartofvolume154
dc.subject.fieldofresearchZoology not elsewhere classified
dc.subject.fieldofresearchBiochemistry and Cell Biology
dc.subject.fieldofresearchPlant Biology
dc.subject.fieldofresearchHorticultural Production
dc.subject.fieldofresearchcode060899
dc.subject.fieldofresearchcode0601
dc.subject.fieldofresearchcode0607
dc.subject.fieldofresearchcode0706
dc.titleThe effect of atmospheric carbon dioxide concentrations on the performance of the mangrove Avicennia germinans over a range of salinities
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorAdame Vivanco, Fernanda


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record