globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2014.01.050
Scopus记录号: 2-s2.0-84894298617
论文题名:
Uncoupled spatiotemporal patterns of seed dispersal and regeneration in Pyrenean silver fir populations
作者: de Andrés E.G.; Camarero J.J.; Martínez I.; Coll L.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2014
卷: 319
起始页码: 18
结束页码: 28
语种: 英语
英文关键词: Canopy openness ; Dispersal kernel ; Masting ; Recruitment ; Regeneration niche ; Spanish Pyrenees
英文摘要: Silver fir (Abies alba) reaches its southwestern distribution limit (rear edge) in the Pyrenees, where it forms highly fragmented populations threatened by drought-induced die-off. Therefore, we need a better knowledge of regeneration patterns and processes (seed production and dispersal, regeneration niche) of such rear-edge stands to assist their long-term conservation. Seed rain patterns were studied in two structurally contrasting sites: an even-aged pure stand (Las Eras) and an uneven-aged mixed silver fir-beech (Fagus sylvatica) stand (Gamueta) over 8 and 12. years, respectively. Seed production experienced a greater synchrony in years of high seed production than when crops were low, suggesting masting behavior in both sites. Seed inverse modeling methods resulted in dispersal curves differing between sites, with estimates of mean dispersal distances of 9.9 and 21.5. m for the pure and mixed stands, respectively. Long-term sampling of seed dispersal and production was complemented with an analysis of silver fir regeneration niche. Seed and seedling patterns were spatially uncoupled, emphasizing the relevance of microsite filtering of regeneration. Understory light environment was the main factor explaining seedling emergence and mortality. Our study provides a mechanistic basis and a methodological approach for understanding the colonization ability of Pyrenean rear-edge silver fir stands and similar tree populations. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66039
Appears in Collections:影响、适应和脆弱性

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作者单位: Departamento de Ciencias del Medio Natural, Universidad Pública de Navarra, Campus Arrosadía S/N, E-31006 Pamplona, Spain; Departamento de Ecología, Facultad de Ciencias, Universidad Autónoma de Madrid, C/Darwin 2, E-28049 Madrid, Spain; ARAID-Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, Apdo. 202, E-50192 Zaragoza, Spain; Departament of Ecology, Fac. Biology, University of Barcelona, Avda. Diagonal 645, E-08028 Barcelona, Spain; Departament of Conservation Biology, Estación Biológica de Doñana (EBD-CSIC), C/Américo Vespucio s/n, E-41092 Sevilla, Spain; Forest Sciences Center of Catalonia (CTFC), Ctra. Sant Llorenç de Morunys km. 2, E-25280 Solsona, Spain; CREAF, Centre for Ecological Research and Forestry Applications, Autonomous University of Barcelona, Bellaterra E-08193, Catalonia, Spain

Recommended Citation:
de Andrés E.G.,Camarero J.J.,Martínez I.,et al. Uncoupled spatiotemporal patterns of seed dispersal and regeneration in Pyrenean silver fir populations[J]. Forest Ecology and Management,2014-01-01,319
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