Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation
Throughout Earth's history there have been temporal and spatial variations in the amount of visible and ultraviolet radiation received by ecosystems. This paper examines if temporal changes in these forms of energy receipt could have influenced the tempo and mode of plant diversity and speciati...
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| Format: | Journal article |
| Language: | English |
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2009
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| _version_ | 1797053000291713024 |
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| author | Willis, K Bennett, K Birks, H |
| author_facet | Willis, K Bennett, K Birks, H |
| author_sort | Willis, K |
| collection | OXFORD |
| description | Throughout Earth's history there have been temporal and spatial variations in the amount of visible and ultraviolet radiation received by ecosystems. This paper examines if temporal changes in these forms of energy receipt could have influenced the tempo and mode of plant diversity and speciation, focusing in particular upon Cenozoic time-scales. Evidence for changing patterns of plant diversity and speciation apparent in various fossil records and molecular phylogenies are considered alongside calculated changes in thermal and solar ultraviolet energy (specifically UV-B) over the past 50 Myr. We suggest that changes in thermal energy influx (amount and variability) affected the tempo of evolution through its influence upon community dynamics (e.g. population size, diversity, turnover, extinctions). It was not only the amount of thermal energy but also variability in its flux that may have influenced these processes, and ultimately the rate of diversification. We suggest that variations in UV-B would have influenced the mode and tempo of speciation through changes to genome stability during intervals of elevated UV-B. We argue, therefore, that although variability in thermal energy and UV-B fluxes through time may lead to the same end-point (changing the rate of diversification), the processes responsible are very different and both need to be considered when linking evolutionary processes to energy flux. © 2009 Blackwell Publishing Ltd. |
| first_indexed | 2024-03-06T18:38:20Z |
| format | Journal article |
| id | oxford-uuid:0c0e9b70-0cf7-4c1e-8f28-b82aed1e73e7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:38:20Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:0c0e9b70-0cf7-4c1e-8f28-b82aed1e73e72022-03-26T09:32:50ZVariability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0c0e9b70-0cf7-4c1e-8f28-b82aed1e73e7EnglishSymplectic Elements at Oxford2009Willis, KBennett, KBirks, HThroughout Earth's history there have been temporal and spatial variations in the amount of visible and ultraviolet radiation received by ecosystems. This paper examines if temporal changes in these forms of energy receipt could have influenced the tempo and mode of plant diversity and speciation, focusing in particular upon Cenozoic time-scales. Evidence for changing patterns of plant diversity and speciation apparent in various fossil records and molecular phylogenies are considered alongside calculated changes in thermal and solar ultraviolet energy (specifically UV-B) over the past 50 Myr. We suggest that changes in thermal energy influx (amount and variability) affected the tempo of evolution through its influence upon community dynamics (e.g. population size, diversity, turnover, extinctions). It was not only the amount of thermal energy but also variability in its flux that may have influenced these processes, and ultimately the rate of diversification. We suggest that variations in UV-B would have influenced the mode and tempo of speciation through changes to genome stability during intervals of elevated UV-B. We argue, therefore, that although variability in thermal energy and UV-B fluxes through time may lead to the same end-point (changing the rate of diversification), the processes responsible are very different and both need to be considered when linking evolutionary processes to energy flux. © 2009 Blackwell Publishing Ltd. |
| spellingShingle | Willis, K Bennett, K Birks, H Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title | Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title_full | Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title_fullStr | Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title_full_unstemmed | Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title_short | Variability in thermal and UV-B energy fluxes through time and their influence on plant diversity and speciation |
| title_sort | variability in thermal and uv b energy fluxes through time and their influence on plant diversity and speciation |
| work_keys_str_mv | AT willisk variabilityinthermalanduvbenergyfluxesthroughtimeandtheirinfluenceonplantdiversityandspeciation AT bennettk variabilityinthermalanduvbenergyfluxesthroughtimeandtheirinfluenceonplantdiversityandspeciation AT birksh variabilityinthermalanduvbenergyfluxesthroughtimeandtheirinfluenceonplantdiversityandspeciation |