Facilitation of Quercus ilex recruitment by shrubs in Mediterranean open woodlands
| العنوان: | Facilitation of Quercus ilex recruitment by shrubs in Mediterranean open woodlands |
|---|---|
| المؤلفون: | Jan den Ouden, Christian Smit, Mario Díaz |
| المساهمون: | Smit group |
| المصدر: | Journal of Vegetation Science, 19, 193-200 Journal of Vegetation Science, 19(2), 193-200. Wiley-Blackwell Journal of Vegetation Science 19 (2008) |
| بيانات النشر: | Wiley-Blackwell, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Canopy, size structure, plant facilitation, ved/biology.organism_classification_rank.species, Plant Science, Quercus suber, Woodland, WOODED PASTURES, Acorn, SPATIAL-PATTERNS, Shrub, holm oak, wooded pastures, REGENERATION, DISPERSAL, FORESTS, Botany, NURSE PLANTS, Bosecologie en Bosbeheer, spatial-patterns, dispersal, forests, PLANT FACILITATION, Ecology, biology, Genista hirsuta, ved/biology, HOLM OAK, nurse plants, Sowing, seedling establishment, PE&RC, biology.organism_classification, Forest Ecology and Forest Management, dehesa, SIZE STRUCTURE, Agronomy, seed predation, Seedling, regeneration, Seed predation, tree regeneration, nurse shrub |
| الوصف: | Question: Insufficient tree regeneration threatens the long-term persistence of biodiverse Mediterranean open oak woodlands. Could shrubs, scarce due to decades of management ( clearing and ploughing), facilitate holm oak recruitment at both acorn and seedling stages?Location: Open oak woodlands in Central Spain.Methods: Plots with four acorns were planted: ( 1) under the canopy of the spiny shrub Genista hirsuta, ( 2) in a small cage, protecting against ungulates, ( 3) in a shaded cage, protecting against ungulates and sun, and ( 4) in open grassland. Sets of these four treatments were spatially grouped according to a randomised block design, with 16 blocks near ( 20 m) parent trees to test for distance-related survival. Plots were regularly checked for seed removal. After emergence one seedling per plot ( 97 in total) was selected and its survival monitored.Results: Three months after sowing, 199 of 512 acorns were removed, predominantly by rodents. Acorn removal occurred at each treatment but was highest under shrubs. Eight months after sowing, seedling survival was highest under shrubs (50%), followed by shaded cages (16%), open grassland (4%) and cages (0%). Main mortality cause was drought (90%), killing most seedlings between June and July. No seedlings died from ungulate browsing.Conclusion: Shrubs demonstrated clear net facilitative effects for Quercus ilex recruitment, despite higher seed removal. Shading appears the crucial factor facilitating seedling survival. We therefore propose that lack of shrubs contributes largely to tree recruitment failure in Mediterranean open woodlands; management should aim at conserving shrubs. |
| وصف الملف: | application/octet-stream; application/pdf |
| اللغة: | English |
| تدمد: | 1100-9233 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad7be3859b8a6385fd3b4178a15a3829 https://research.rug.nl/en/publications/39ff4b4f-b6ee-442c-8d31-6082f2d9d2a1 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ad7be3859b8a6385fd3b4178a15a3829 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 11009233 |
|---|