Holmgren, M.; Stapp, P.; Dickman, C.; Gracia, C.; Graham, S.; Gutiérrez, J.; Hice, C.; Jaksic, F.; Kelt, D.; Letnic, M.; Lima, M.; López, B.; Meserve, P.; Milstead, W.; Polis, G.; Previtali, M.; Richter, M.; Sabaté, S.; Squeo, F. (2006) Extreme climatic events shape arid and semiarid ecosystems. Frontiers in Ecology and Environment. 4(2): 87–95
Stefanescu C, Peñuelas J, Sardans J, Filellla I (2006) Females of the specialist butterfly Euphydryas aurinia (Lepidoptera: Nymphalinae: Melitaeini) select the greenest leaves of Lonicera implexa (Caprifoliaceae) for oviposition. European Journal of Entomology 103: 569-574
Sol D (2006) Tamaño del cerebro e inteligencia de los animales. Investigación y Ciencia 353: 36-39
Vilà M, Bacher S, Hulme P, Kenis M, Kobelt M, Nentwig W, Sol D, Solarz W (2006) Impactos ecológicos de las invasiones de plantas y vertrebados terrestres en Europa. Ecosistemas 2006/2
McDougall PT, Réale D, Sol D, Reader SM (2006) Wildlife conservation and animal temperament: an evolutionary overview. Animal Conservation 9: 39-48
Sol D, Clavell J, Vall-llosera M (2006) Naturalised birds of the world (book review). Ibis 148: 572-588
Domènech R., Vilà M. (2006) The role of successional stage, vegetation type and soil disturbance in the invasion of the alien grass Cortaderia selloana. Journal of Vegetation Science. 17: 591-598.EnllaçDoi: 10.1658/1100-9233(2006)17[591:TROSSV]2.0.CO;2
Question: This paper studies the establishment and performance of Cortaderia selloana (Pampas grass), an alien South American ornamental species that is invading many parts of the world. We asked whether (1) early successional stages were the most susceptible to C. selloana invasion; (2) soil microdisturbances increased invasion at any point of succession, and (3) C. selloana invasion of later successional stages was modulated by vegetation type Location: Delta del Llobregat (Catalonia, NE Spain). Methods: We monitored survival and growth of transplanted C. selloana seedlings in disturbed and non-disturbed plots throughout a successional gradient with an age range of 10 years in different vegetation types and within the area of influence of coexisting species with similar growth form. Results: Although seedling survival was extremely low in all treatments, our results revealed that early successional stages were not the most easily invaded since we found no significant differences in the percentage survival of C. selloana along the successional gradient. However, survival and seedling biomass were enhanced by soil disturbance at any seral stage. This result suggested that inhibition ruled C. selloana invasion. Invasibility neither depended on the invaded vegetation type nor on the co-existing species with similar growth form. Finally, C. selloana invasion was not enhanced by decreasing competition with Phragmites australis, a native coexisting species because survival rates after a year were not significantly different. However, Phragmites increased C. selloana leaf length probably due to shading. Conclusions: C. selloana recruitment appears to be positively affected by soil disturbance but it is independent of successional stage or vegetation type. © IAVS; Opulus Press Uppsala.
Domènech R., Vilà M., Gesti J., Serrasolses I. (2006) Neighbourhood association of Cortaderia selloana invasion, soil properties and plant community structure in Mediterranean coastal grasslands. Acta Oecologica. 29: 171-177.EnllaçDoi: 10.1016/j.actao.2005.09.004
Invasion by alien species is threatening the conservation of native plant communities and the integrity of ecosystems. To gain a better understanding of such impacts, many studies have examined the traits that make alien species successful invaders as well as the factors involved in community invasibility. However, it is necessary to link invader effects on community structure and on ecosystem processes in order to unravel the mechanisms of impact. Cortaderia selloana is a perennial grass native to South America that is invading abandoned agricultural lands close to coastal human settlements in Catalonia (NE Spain). In invaded pastures, we examined the association between C. selloana invasion, soil properties and vegetation structure changes in pastures, comparing the neighbourhood area of influence of C. selloana with areas far from C. selloana. Areas under the influence of C. selloana had lower total soil nitrogen values and higher C/N values than in areas far from C. selloana. Furthermore, the areas affected by C. selloana had lower species, family and life form richness and diversity, and less plant cover. In addition, C. selloana also increased the vertical vegetation structure and changed species composition (only 44% similarity between invaded and non-invaded areas). Our results point out that C. selloana has an effect on its neighbourhood leading to an increase in small-scale variability within invaded fields. © 2005 Elsevier SAS. All rights reserved.
Dunn J.L., Dierkes L., Picó F.X., Kalisz S. (2006) Identification of microsatellite loci in Collinsia verna (Veronicaceae). Molecular Ecology Notes. 6: 1212-1215.EnllaçDoi: 10.1111/j.1471-8286.2006.01494.x
We developed eight polymorphic microsatellite loci for Collinsia verna (Veronicaceae). In a sample of 18-35 individuals from a single population, we found two to 15 alleles per locus (mean 8.3). We also tested these loci for cross-amplification in all 22 species in the tribe Collinseae. Overall, more than half the species in the tribe amplified one microsatellite while three species most closely related to C. verna (Collinsia violacea, Collinsia parviflora and Collinsia grandiflora) amplified multiple microsatellite loci. These microsatellite loci will be used in future studies of mating system in this tribe and other quantitative genetic and population genetic studies. © 2006 The Authors.
Cristóbal J, Ninyerola M, Pons X, Pla M (2006) Improving Air Temperature Modelization by Means of Remote Sensing Variables. In: 26th International Geoscience And Remote Sensing Symposium. IEEE Press Vol. V, 2251-2254. (ISBN 0-7803-95-10-7)
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