01839nas a2200169   4500008004100000245011000041210006900151300001200220520123300232653005901465100002001524700001901544700002101563700001801584700002301602856004401625       2015                        eng d00aLeaf phenology mediates provenance differences in herbivore populations on valley oaks in a common garden0 aLeaf phenology mediates provenance differences in herbivore popu  an/a-n/a3 a<p>1. Plants from different populations often display a variation in herbivore resistance. However, it is rarely understood what plant traits mediate such differences. 2. It was tested how leaf phenology affects herbivore populations in a 15-year-old common garden of valley oaks (Quercus lobata N&eacute;e) with different populations and maternal parents from throughout the Q. lobata range. 3. The abundance of leaf miners (Stigmella sp. Shrank) and leaf phenology of oaks in the common garden was measured. 4. Leaf miner abundance varied among provenance locations (population), but not among maternal parents within populations. Leaf phenology varied by provenance location and maternal parent, and trees that leafed out earlier accrued higher leaf-miner abundance. Path analysis indicated that leaf phenology was the likely driver of provenance and parental differences in resistance to leaf miners. 5. Understanding population differences is particularly important when considering transport of genotypes for ornamental or restoration purposes. The present study suggests that similarity in leaf phenology may be one factor that could be used to find genotypes with a similar herbivore resistance to local genotypes.</p>
10aFolivory leaf mine local adaptation provenance Quercus1 aPearse, Ian, S.1 aBaty, Jill, H.1 aHerrmann, Dustin1 aSage, Richard1 aKoenig, Walter, D.  uhttps://quercus.myspecies.info/node/17702275nas a2200301   4500008004100000020001400041245011700055210006900172260002900241300001200270490000800282520134500290653002101635653001401656653001801670653001401688653002201702653001901724653002501743653002101768100002301789700001901812700002201831700002401853700002501877700002701902856004401929       2012                        eng d  a1365-274500aStabilizing selection for within-season flowering phenology confirms pollen limitation in a wind-pollinated tree0 aStabilizing selection for withinseason flowering phenology confi  bBlackwell Publishing Ltd  a758-7630 v1003 a1. We examined the fitness consequences of pollen limitation in the valley oak (Quercus lobata Née, Fagaceae), a wind-pollinated, predominantly outcrossing tree endemic to California, by examining the relationship between within-year phenology and acorn production over an 8 year period. 2. We predicted that pollen limitation should result in trees flowering relatively early and late in the season, when fewer trees are in flower, to experience reduced reproductive success compared to trees flowering during the middle of the season. 3. Despite considerable variation in acorn production from year to year, analyses confirmed this prediction and indicated that there was significant overall stabilizing selection on budburst date consistent with the pollen limitation hypothesis. 4. Analyses including herbivory and pre-budburst temperatures at individual trees revealed significant correlations with acorn production, but we still found significant stabilizing selection on budburst date even when considering these variables. 5.Synthesis.  Pollen limitation, as indicated by stabilizing selection on within-year flowering phenology, significantly affects acorn production by individual trees in Q. lobata and has the potential to influence other key life-history features including masting behaviour and spatial synchrony.10aacorn production10aherbivory10amast-fruiting10aphenology10apollen limitation10aQuercus lobata10areproductive ecology10awind-pollination1 aKoenig, Walter, D.1 aFunk, Kyle, A.1 aKraft, Thomas, S.1 aCarmen, William, J.1 aBarringer, Brian, C.1 aKnops, Johannes, M. H.  uhttps://quercus.myspecies.info/node/145