<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Arellano, Gabriel</style></author><author><style face="normal" font="default" size="100%">Peco, Begoña</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Collins, Beverly</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Testing the role of seed size in annual legume seedling performance under experimental autumn moisture conditions</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Vegetation Science</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">autumn drought</style></keyword><keyword><style  face="normal" font="default" size="100%">mediterranean therophytes</style></keyword><keyword><style  face="normal" font="default" size="100%">Pasture legumes</style></keyword><keyword><style  face="normal" font="default" size="100%">seed mass</style></keyword><keyword><style  face="normal" font="default" size="100%">seedling survival</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><volume><style face="normal" font="default" size="100%">23</style></volume><pages><style face="normal" font="default" size="100%">690-697</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Question: Previous studies show that large-seeded species increase their abundance in Mediterranean annual grasslands in growing seasons with dry autumns. One possible explanation is that large-seeded species have larger seedlings, which provide an advantage under drier conditions. We address the following questions: is seed mass correlated with seedling survival in annual legumes? Is this correlation inﬂuenced by the watering regime? Can seedling growth characteristics explain the differential survival of small- and large-seeded species? Location: Annual Mediterranean grassland, Central Spain. Methods: An experiment was conducted with six grassland legume species of different seed sizes, subjected to six different watering regimes, monitoring survival and morphological variables (shoot and root growth) for 40 d. Results: Large seeds provide an advantage for seedling survival, but in extreme drought conditions, seedling survival in small-seeded species equals that of seedlings from large-seeded species. Seedlings from larger seeds are larger than those of small-seeded species, but have a lower root/shoot biomass ratio, leading to greater potential evapotranspiration, which could explain their loss of relative advantage under extreme droughts. Conclusion: The hypothesis that seedlings from large-seeded species survive better than small-seeded species under drought conditions was not supported. Germination behaviour seems to be a more plausible explanation for the increased abundance in the ﬁeld of large-seeded species in growing seasons with dry autumns.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zunzunegui, M</style></author><author><style face="normal" font="default" size="100%">Ain-Lhout, F</style></author><author><style face="normal" font="default" size="100%">Jáuregui, J</style></author><author><style face="normal" font="default" size="100%">Díaz Barradas, M C</style></author><author><style face="normal" font="default" size="100%">Boutaleb, S</style></author><author><style face="normal" font="default" size="100%">Álvarez-Cansino, L</style></author><author><style face="normal" font="default" size="100%">Esquivias, M P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fruit production under different environmental and management conditions of argan, Argania spinosa (L.)</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Arid Environments</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">herbivory</style></keyword><keyword><style  face="normal" font="default" size="100%">Kernel mass</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf area index</style></keyword><keyword><style  face="normal" font="default" size="100%">Oil content</style></keyword><keyword><style  face="normal" font="default" size="100%">Oil production</style></keyword><keyword><style  face="normal" font="default" size="100%">seed mass</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><publisher><style face="normal" font="default" size="100%">Elsevier Ltd</style></publisher><volume><style face="normal" font="default" size="100%">74</style></volume><pages><style face="normal" font="default" size="100%">1138-1145</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The study’s aim was to evaluate the effects of different management and environmental conditions on fruit and seed mass production of Argania spinosa, an endemic tree to Morocco that grows in arid and semiarid areas and is now undergoing a protracted regression due to overexploitation. Four study areas with different herbivory intensity, altitude and climatic conditions were selected. In each one the following measurements were carried out in 20 trees: tree and crown height, crown projection, trunk diameter, leaf area index, tree density, fruit production$m3 , number of fruits per tree, fruit, endocarp and kernel mass and seed size. The greatest fruit production and fruit size were found in populations with better climatic conditions, followed by the population under high human pressure. The lowest fruit production and fruit size were found in the population under the most severe climate conditions. Mean kernel mass was not affected by harsh climatic conditions or high human pressure, but when both stressing factors were combined all measured fruit traits were abated. Although A. spinosa is tolerant to high herbivory pressure, this perturbation induces a drastic decrease in fruit production. Managing plans addressing its reintroduction and/or maintenance should include a conservative strategy controlling herbivory</style></abstract></record></records></xml>