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Statements

Subject Item
n2:RIV%2F00216208%3A11620%2F12%3A10127312%21RIV13-MSM-11620___
rdf:type
n8:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.3732/ajb.1200062
dcterms:description
Premise of the Study: Leaf area is a key trait that links plant form, function, and environment. Measures of leaf area can be biased because leaf area is often estimated from dried or fossilized specimens that have shrunk by an unknown amount. We tested the common assumption that this shrinkage is negligible. Methods: We measured shrinkage by comparing dry and fresh leaf area in 3401 leaves of 380 temperate and tropical species and used phylogenetic and trait-based approaches to determine predictors of this shrinkage. We also tested the effects of rehydration and simulated fossilization on shrinkage in four species. Key Results: We found that dried leaves shrink in area by an average of 22% and a maximum of 82%. Shrinkage in dried leaves can be predicted by multiple morphological traits with a standard deviation of 7.8%. We also found that mud burial, a proxy for compression fossilization, caused negligible shrinkage, and that rehydration, a potential treatment of dried herbarium specimens, eliminated shrinkage. Conclusions: Our findings indicate that the amount of shrinkage is driven by variation in leaf area, leaf thickness, evergreenness, and woodiness and can be reversed by rehydration. The amount of shrinkage may also be a useful trait related to ecologically and physiological differences in drought tolerance and plant life history. Premise of the Study: Leaf area is a key trait that links plant form, function, and environment. Measures of leaf area can be biased because leaf area is often estimated from dried or fossilized specimens that have shrunk by an unknown amount. We tested the common assumption that this shrinkage is negligible. Methods: We measured shrinkage by comparing dry and fresh leaf area in 3401 leaves of 380 temperate and tropical species and used phylogenetic and trait-based approaches to determine predictors of this shrinkage. We also tested the effects of rehydration and simulated fossilization on shrinkage in four species. Key Results: We found that dried leaves shrink in area by an average of 22% and a maximum of 82%. Shrinkage in dried leaves can be predicted by multiple morphological traits with a standard deviation of 7.8%. We also found that mud burial, a proxy for compression fossilization, caused negligible shrinkage, and that rehydration, a potential treatment of dried herbarium specimens, eliminated shrinkage. Conclusions: Our findings indicate that the amount of shrinkage is driven by variation in leaf area, leaf thickness, evergreenness, and woodiness and can be reversed by rehydration. The amount of shrinkage may also be a useful trait related to ecologically and physiological differences in drought tolerance and plant life history.
dcterms:title
THE LEAF-AREA SHRINKAGE EFFECT CAN BIAS PALEOCLIMATE AND ECOLOGY RESEARCH THE LEAF-AREA SHRINKAGE EFFECT CAN BIAS PALEOCLIMATE AND ECOLOGY RESEARCH
skos:prefLabel
THE LEAF-AREA SHRINKAGE EFFECT CAN BIAS PALEOCLIMATE AND ECOLOGY RESEARCH THE LEAF-AREA SHRINKAGE EFFECT CAN BIAS PALEOCLIMATE AND ECOLOGY RESEARCH
skos:notation
RIV/00216208:11620/12:10127312!RIV13-MSM-11620___
n8:predkladatel
n13:orjk%3A11620
n3:aktivita
n18:I
n3:aktivity
I
n3:cisloPeriodika
11
n3:dodaniDat
n12:2013
n3:domaciTvurceVysledku
n7:5948525
n3:druhVysledku
n17:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
146632
n3:idVysledku
RIV/00216208:11620/12:10127312
n3:jazykVysledku
n15:eng
n3:klicovaSlova
vein density; stomatal density; shrinkage specific leaf area; leaf size; leaf mass per area; leaf area; fresh area; dry area
n3:klicoveSlovo
n6:dry%20area n6:leaf%20area n6:shrinkage%20specific%20leaf%20area n6:fresh%20area n6:stomatal%20density n6:vein%20density n6:leaf%20mass%20per%20area n6:leaf%20size
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[FAB3FDA4A090]
n3:nazevZdroje
American Journal of Botany
n3:obor
n11:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
46
n3:rokUplatneniVysledku
n12:2012
n3:svazekPeriodika
99
n3:tvurceVysledku
Chaney, Max Jerez, Alex Hall, Ruby Jones, Nadja Kono, Anita Barber, Benjamin Hauschild, Amelia Matthai, Jacob David Ruiz Blonder, Benjamin Bushey, Dharma Contreras, Karina McIntyre, Colten Aguilar-Beaucage, Brianna Enquist, Brian J. Cox, Mandarava Curtis, Cannon Fisher, Mariah Lipson, Rebecca Boyle, Brad Barnes, Chris Furst, Lindsey Andrade, Angelina Gallegos, Jessica Buzzard, Vanessa Sloat, Lindsey Šímová, Irena Lamb, Mary Cueto, Maya Klucas, Aaron Cartagena, Paulina McKenna, Joshua
n3:wos
000311579700015
s:issn
0002-9122
s:numberOfPages
8
n19:doi
10.3732/ajb.1200062
n16:organizacniJednotka
11620