Shifts in pollen release envelope differ between genera with non-uniform climate change.
Identifieur interne : 000C81 ( Main/Exploration ); précédent : 000C80; suivant : 000C82Shifts in pollen release envelope differ between genera with non-uniform climate change.
Auteurs : Zoe A. Panchen ; Mark O. JohnstonSource :
- American journal of botany [ 1537-2197 ] ; 2018.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Betula, Fleurs, Pollen, Populus.
- Changement climatique, Pollinisation, Vent.
English descriptors
- KwdEn :
- MESH :
- physiology : Betula, Flowers, Pollen, Populus.
- Climate Change, Pollination, Wind.
Abstract
PREMISE OF THE STUDY
Plant phenological responses to climate change now constitute one of the best studied areas of the ecological impacts of climate change. Flowering time responses to climate change of wind-pollinated species have, however, been less well studied. A novel source of flowering time data for wind-pollinated species is allergen monitoring records.
METHODS
We studied the male flowering time response to climatic variables of two wind-pollinated genera, Betula (Betulaceae) and Populus (Salicaceae), using pollen count records over a 17-year period.
KEY RESULTS
We found that changes in the pollen release envelope differed between the two genera. Over the study period, the only month with a significant rise in temperature was April, resulting in the duration of pollen release of the April-flowering Populus to shorten and the start and peak of the May-flowering Betula to advance. The quantity of pollen released by Betula has increased and was related to increases in the previous year's August precipitation, while the quantity of pollen released by Populus has not changed and was related to the previous year's summer and autumn temperatures.
CONCLUSIONS
Our findings suggest that taxa differ in the reproductive consequences of environmental change. Differing shifts in phenology among species may be related to different rates of change in climatic variables in different months of the year. While our study only considers two genera, the results underscore the importance of understanding non-uniform intra-annual variation in climate when studying the ecological implications of climate change.
DOI: 10.1002/ajb2.1156
PubMed: 30216409
Affiliations:
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Le document en format XML
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<author><name sortKey="Panchen, Zoe A" sort="Panchen, Zoe A" uniqKey="Panchen Z" first="Zoe A" last="Panchen">Zoe A. Panchen</name>
<affiliation><nlm:affiliation>Dalhousie University, 1355 Oxford St., P.O. Box 15000, Halifax, Nova Scotia, Canada, B3H 4R2.</nlm:affiliation>
<wicri:noCountry code="subField">B3H 4R2</wicri:noCountry>
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<author><name sortKey="Johnston, Mark O" sort="Johnston, Mark O" uniqKey="Johnston M" first="Mark O" last="Johnston">Mark O. Johnston</name>
<affiliation><nlm:affiliation>Dalhousie University, 1355 Oxford St., P.O. Box 15000, Halifax, Nova Scotia, Canada, B3H 4R2.</nlm:affiliation>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Shifts in pollen release envelope differ between genera with non-uniform climate change.</title>
<author><name sortKey="Panchen, Zoe A" sort="Panchen, Zoe A" uniqKey="Panchen Z" first="Zoe A" last="Panchen">Zoe A. Panchen</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Betula (physiology)</term>
<term>Climate Change (MeSH)</term>
<term>Flowers (physiology)</term>
<term>Pollen (physiology)</term>
<term>Pollination (MeSH)</term>
<term>Populus (physiology)</term>
<term>Wind (MeSH)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Betula (physiologie)</term>
<term>Changement climatique (MeSH)</term>
<term>Fleurs (physiologie)</term>
<term>Pollen (physiologie)</term>
<term>Pollinisation (MeSH)</term>
<term>Populus (physiologie)</term>
<term>Vent (MeSH)</term>
</keywords>
<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Betula</term>
<term>Fleurs</term>
<term>Pollen</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Betula</term>
<term>Flowers</term>
<term>Pollen</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Climate Change</term>
<term>Pollination</term>
<term>Wind</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Changement climatique</term>
<term>Pollinisation</term>
<term>Vent</term>
</keywords>
</textClass>
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<front><div type="abstract" xml:lang="en"><p><b>PREMISE OF THE STUDY</b>
</p>
<p>Plant phenological responses to climate change now constitute one of the best studied areas of the ecological impacts of climate change. Flowering time responses to climate change of wind-pollinated species have, however, been less well studied. A novel source of flowering time data for wind-pollinated species is allergen monitoring records.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>METHODS</b>
</p>
<p>We studied the male flowering time response to climatic variables of two wind-pollinated genera, Betula (Betulaceae) and Populus (Salicaceae), using pollen count records over a 17-year period.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>KEY RESULTS</b>
</p>
<p>We found that changes in the pollen release envelope differed between the two genera. Over the study period, the only month with a significant rise in temperature was April, resulting in the duration of pollen release of the April-flowering Populus to shorten and the start and peak of the May-flowering Betula to advance. The quantity of pollen released by Betula has increased and was related to increases in the previous year's August precipitation, while the quantity of pollen released by Populus has not changed and was related to the previous year's summer and autumn temperatures.</p>
</div>
<div type="abstract" xml:lang="en"><p><b>CONCLUSIONS</b>
</p>
<p>Our findings suggest that taxa differ in the reproductive consequences of environmental change. Differing shifts in phenology among species may be related to different rates of change in climatic variables in different months of the year. While our study only considers two genera, the results underscore the importance of understanding non-uniform intra-annual variation in climate when studying the ecological implications of climate change.</p>
</div>
</front>
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<Title>American journal of botany</Title>
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<ArticleTitle>Shifts in pollen release envelope differ between genera with non-uniform climate change.</ArticleTitle>
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<Abstract><AbstractText Label="PREMISE OF THE STUDY">Plant phenological responses to climate change now constitute one of the best studied areas of the ecological impacts of climate change. Flowering time responses to climate change of wind-pollinated species have, however, been less well studied. A novel source of flowering time data for wind-pollinated species is allergen monitoring records.</AbstractText>
<AbstractText Label="METHODS">We studied the male flowering time response to climatic variables of two wind-pollinated genera, Betula (Betulaceae) and Populus (Salicaceae), using pollen count records over a 17-year period.</AbstractText>
<AbstractText Label="KEY RESULTS">We found that changes in the pollen release envelope differed between the two genera. Over the study period, the only month with a significant rise in temperature was April, resulting in the duration of pollen release of the April-flowering Populus to shorten and the start and peak of the May-flowering Betula to advance. The quantity of pollen released by Betula has increased and was related to increases in the previous year's August precipitation, while the quantity of pollen released by Populus has not changed and was related to the previous year's summer and autumn temperatures.</AbstractText>
<AbstractText Label="CONCLUSIONS">Our findings suggest that taxa differ in the reproductive consequences of environmental change. Differing shifts in phenology among species may be related to different rates of change in climatic variables in different months of the year. While our study only considers two genera, the results underscore the importance of understanding non-uniform intra-annual variation in climate when studying the ecological implications of climate change.</AbstractText>
<CopyrightInformation>© 2018 Botanical Society of America.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Panchen</LastName>
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<Initials>ZA</Initials>
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<GrantList CompleteYN="Y"><Grant><Agency>Natural Sciences and Engineering Research Council of Canada</Agency>
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<Keyword MajorTopicYN="Y">flowering time</Keyword>
<Keyword MajorTopicYN="Y">phenology</Keyword>
<Keyword MajorTopicYN="Y">pollen count</Keyword>
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