A Time-Domain Nuclear Magnetic Resonance Study of Mediterranean Scleractinian Corals Reveals Skeletal-Porosity Sensitivity to Environmental Changes

A Time-Domain Nuclear Magnetic Resonance Study of Mediterranean Scleractinian Corals Reveals Skeletal-Porosity Sensitivity to Environmental Changes
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  Subscriber access provided by UNIV DI BOLOGNA Environmental Science & Technology is published by the American Chemical Society.1155 Sixteenth Street N.W., Washington, DC 20036Published by American Chemical Society. Copyright © American Chemical Society.However, no copyright claim is made to srcinal U.S. Government works, or worksproduced by employees of any Commonwealth realm Crown government in the courseof their duties. Article Time-Domain NMR study of Mediterranean scleractinian coralsreveals skeletal-porosity sensitivity to environmental changes Paola Fantazzini, Stefano Mengoli, Stefania Evangelisti, Luca Pasquini, Manuel Mariani, LeonardoBrizi, Stefano Goffredo, Erik Caroselli, Fiorella Prada, Giuseppe Falini, Oren Levy, and Zvy Dubinsky Environ. Sci. Technol. , Just Accepted Manuscript  • Publication Date (Web): 21 Oct 2013 Downloaded from on October 29, 2013 Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are postedonline prior to technical editing, formatting for publication and author proofing. The American ChemicalSociety provides “Just Accepted” as a free service to the research community to expedite thedissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscriptsappear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have beenfully peer reviewed, but should not be considered the official version of record. They are accessible to allreaders and citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offeredto authors. Therefore, the “Just Accepted” Web site may not include all articles that will be publishedin the journal. After a manuscript is technically edited and formatted, it will be removed from the “JustAccepted” Web site and published as an ASAP article. Note that technical editing may introduce minorchanges to the manuscript text and/or graphics which could affect content, and all legal disclaimersand ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errorsor consequences arising from the use of information contained in these “Just Accepted” manuscripts.          Page 1 of 27ACS Paragon Plus EnvironmentEnvironmental Science & Technology  1 TimeDomain NMR study of Mediterranean scleractinian corals 1 reveals skeletalporosity sensitivity to environmental changes 2 3 Paola anta!!ini a"#$ " %tefano Mengoli c " %tefania &vangelisti a " 'uca Pas(uini a " Manuel Mariani a"# " ) 'eonardo *ri!i a"# " %tefano +offredo d " &rik ,aroselli d " iorella Prada d " +iuseppe alini e " -ren 'evy f  " . /vy Du#insky f 0  a  Department of Physics and stronomy" niversity of *ologna" 4iale *erti Pichat 052" )612 7 *ologna" 8taly" 9  #  ,entro &nrico ermi" Roma" 8taly" 16 c  Management Department" niversity of *ologna" *ologna" 8taly" 11 d Marine %cience +roup" Department of *iological" +eological and &nvironmental %ciences" 12 niversity of *ologna" *ologna" 8taly" 13 e  Department of ,hemistry" niversity of *ologna" *ologna" 8taly" 1) f   The Mina and &verard +oodman aculty of 'ife %ciences" *ar8lan niversity" Ramat+an" 8srael: 1. 10 1 $ ,orresponding author; Paola anta!!ini< tel; =396.1269.119< fa>; =396.1269.6)< 17  paola:fanta!!ini?uni#o:it 19 26 21 22 Page 2 of 27ACS Paragon Plus EnvironmentEnvironmental Science & Technology  2 23 2) 2. 20  2 Mediterranean corals are a natural model for studying glo#al @arming" as the Mediterranean 27  #asin is e>pected to #e one of the most affected regions and the increase of temperature is 29 one of the greatest threats for coral survival: Ae have analy!ed for the first time @ith Time 36 Domain Nuclear Magnetic Resonance BTDNMRC porosity and porespace structure" 31 important aspects of coral skeletons" of t@o scleractinian corals"  Balanophyllia europaea 32 B!oo>anthellateC   and  Leptopsammia pruvoti  Bnon!oo>anthellateC"   taken from three different 33 sites on the @estern 8talian coast along a temperature gradient: ,omparisons have #een made 3) @ith Mercury 8ntrusion Porosimetry and %&M images: TDNMR parameters are sensitive to 3. changes of the porestructure of the t@o coral species:  parameter" related to the porosity" 30 is larger for  Leptopsammia pruvoti  than for  Balanophyllia europaea " confirming previous 3 nonNMR results: nother parameter representing the fraction of the porevolume @ith 37  poresi!es less than 1626  m is inversely related" @ith high statistical significance" to the 39 mass of the specimen" and" for  Balanophyllia europaea, to the temperature of the gro@ing )6 site: This effect in the !oo>anthellate species" that could reduce its resistance to mechanical )1 stresses" may depend on an inhi#ition of the photosynthetic process at elevated temperatures )2 and could have particular conse(uences in determining the effects of glo#al @arming on )3 these species: )) ). )0 ) )7 Page 3 of 27ACS Paragon Plus EnvironmentEnvironmental Science & Technology  3  )9     +lo#al climate change is the defining environmental issue of .6 our times and is e>pected to profoundly affect all levels of ecological hierarchies and a #road array .1 of terrestrial and marine ecosystems: 1.  Marine communities are e>pected to #e affected more than .2 terrestrial ones #y the effects of climate change" 0  especially in temperate areas:   Thus" the .3 Mediterranean #asin 7  represents a natural focus of interest for researchers and at the same time a .) natural la#oratory to model and predict climate change and its ecological effects: 8n particular" the .. increase of temperature is one of the greatest threats for corals" @hich can #e considered as a pro#e .0 of glo#al @arming effects" as it triggers #leaching events and @idespread mortality: 911  %everal . recent mass mortality events of Mediterranean corals have #een reported as related to high .7 temperatures: 1210  .9 This study focuses on t@o scleractinian species of the Mediterranean %ea" already studied as a 06 model for climate change;  Balanophyllia europaea BRisso" 1720C B  B. europaea C and  Leptopsammia 01  pruvoti  'aca!eDuthiers B179C B  L. pruvoti C 1  Big: 1C:  B. europaea is a solitary" !oo>anthellate Bi:e: 02 sym#iotic @ith unicellular algae named !oo>anthellaeC coral" endemic to the Mediterranean %ea: 8ts 03 distri#ution is limited to depths of 6.6 m #ecause of its sym#iosis @ith !oo>anthellae" @hich 0) re(uire light: 119  L. pruvoti is a non!oo>anthellate and solitary scleractinian coral" distri#uted in the 0. Mediterranean #asin and along the &uropean tlantic coast from Portugal to %outhern &ngland and 00 8reland: 8ts distri#ution is limited to semienclosed rocky ha#itats" under overhangs" in caverns" and 0 small crevices at 66 m depth: 1"17  ,orals @ere collected in three different 8talian sites Bsee ig: 2C" 07 @here the porosity of the t@o species has #een studied previously" 1 along a latitude and sea surface 09 temperature B SST  C gradient: Temperature" the variation of @hich is mainly influenced #y latitude" 26  6 is linked to coral #iometry" physiology" and demography: 2123 1      The porosity Bporevolume to samplevolume 2 ratioC and the porespace structure of minerali!ed tissues are of crucial importance in determining 3 Page 4 of 27ACS Paragon Plus EnvironmentEnvironmental Science & Technology
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