Is there a latitudinal gradient in seed production?

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dc.contributor.author Moles, Angela en_US
dc.contributor.author Wright, Ian en_US
dc.contributor.author Pitman, A en_US
dc.contributor.author Westoby, M en_US
dc.contributor.author Murray, Brad en_US
dc.contributor.editor en_US
dc.date.accessioned 2010-05-28T09:45:54Z
dc.date.available 2010-05-28T09:45:54Z
dc.date.issued 2009 en_US
dc.identifier 2008007860 en_US
dc.identifier.citation Moles Angela et al. 2009, 'Is there a latitudinal gradient in seed production?', Wiley-Blackwell Publishing, Inc, vol. 32, no. 1, pp. 78-82. en_US
dc.identifier.issn 0906-7590 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/8855
dc.description.abstract We compiled data from seed rain studies at 33 sites from around the world to determine whether the greater mean seed mass of tropical plants is associated with production of fewer seeds per square meter of ground. We found no significant linear relationship between latitude and annual seed rain density, but found some evidence for a mid-latitude peak in seed rain density (quadratic relationship, p=0.018; R-2=0.23). Combining seed rain data with seed mass data suggests that vegetation at the equator produces between 19 and 128 times more total mass of seed per year than does vegetation at 60 degrees. This gradient in seed production would far outweigh the doubling in net primary productivity (NPP) over the same range of latitudes. Thus, our (admittedly small) dataset suggests that tropical vegetation allocates a much greater proportion of NPP to reproduction. This raises two important questions for the future: 1) why might tropical vegetation commit more energy to seed production than vegetation further from the equator? 2) What aspect of plant growth might receive proportionally less energy in tropical ecosystems? en_US
dc.language en_US
dc.publisher Wiley-Blackwell Publishing, Inc en_US
dc.relation.isbasedon http://dx.doi.org/10.1111/j.1600-0587.2008.05613.x en_US
dc.title Is there a latitudinal gradient in seed production? en_US
dc.parent Ecography en_US
dc.journal.volume 32 en_US
dc.journal.number 1 en_US
dc.publocation Malden, USA en_US
dc.identifier.startpage 78 en_US
dc.identifier.endpage 82 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 060200 en_US
dc.personcode 0000043147 en_US
dc.personcode 0000017454 en_US
dc.personcode 0000017446 en_US
dc.personcode 010046 en_US
dc.personcode 0000033193 en_US
dc.percentage 100 en_US
dc.classification.name Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000264880300009 en_US
dc.description.keywords NA en_US


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