Carbonate production by calcareous red algae and global change

Geodiversitas

Daniela Basso¹ 

关键词: marine acidification;    carbonate sediment;    carbonate production;    Rhodophyta;    coralline algae;    habitat mapping;    acidification océanique;    sédiments carbonatés;    production carbonatée;    Rhodophytes;    algues corallines;    cartographie des habitats;   

DOI  :  10.5252/g2012n1a2

学科分类：生物科学（综合）

来源: Museum National d Histoire Naturelle

【 摘 要 】

ThemostimportantgroupsofmodernredcalcareousalgaearetheMg-calcitesecretingCorallinalesandSporolithales,andthearagoniticPeyssonnelialesandNemaliales.Theyarecommonontheworld'sshelvesandarevulnerabletotheglobalwarmingandtheloweringofpHofseawater,causedbytheongoingincreaseinanthropogenicCO2.Amongthem,corallinealgaeareecosystemengineersandmajorproducersofcarbonatesediment,ofparticularimportanceintemperateandcoldseas.Corallinesrespondtomarineacidificationandrisingtemperatureshowingdecreasednetcalcification,decreasedgrowthandreproduction,aswellasreducedabundanceanddiversity,leadingtodeathandecologicalshifttodominantnon-calcifyingalgae.Despitetheirkeyecologicalandsedimentologicalrole,andbecauseoftheirvulnerabilitytomarinewarmingandacidification,ourknowledgeofthedistributionofcoralline-dominatedhabitatsandthequantificationoftheircarbonateproductionisnotadequatetoallowproperenvironmentalmanagementandconfidentmodellingofaglobalcarbonbudget.Locatingthealgalcarbonatefactoriesaroundtheworld,thendescribingthem,e.g.,evaluatingtheirextentandtheirproduction,areapriorityforfutureresearch.

【 授权许可】

Unknown