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Opis

Sequential large-scale disturbances may produce§interacting effects that differ from those predicted§for each disturbance in isolation. These non-additive§effects can strongly influence the composition and§structure of plant communities. Hurricanes and§natural lightning-season fires are large-scale,§frequent disturbances in savanna-forest landscapes of§the southeastern US. Passmore develops a predictive§conceptual model for interacting disturbances. She§predicts that hurricane-fire interactions may§influence ecotones between savannas and forests by§changing species composition and structure. Based on§predictions, Passmore implemented an experimental§study in savanna-forest ecotone to test hypotheses of§interactive effects. She hypothesized that effects of§lightning-season fires differ when fires occur alone§compared to when fires are preceded by hurricanes.§Disturbance interactions reduced stem density and§species richness of woody plants in the field study.§Thus, hurricane-fire interactions influence§vegetation structure in savanna-forest ecotones. §Furthermore, over longer time scales interactions may§result in landscape-level changes in southeastern§savanna-forest ecosystems.

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Kategoria Książki po angielsku Mathematics & science Biology, life sciences Life sciences: general issues

• Pełny tytuł: Hurricane and fire effects in savanna-forest landscapes
• Autor: Heather A. Passmore
• Język: Angielski
• Oprawa: Miękka
• Liczba stron: 124
• EAN: 9783639128093
• ISBN: 3639128095
• ID: 06821566
• Wydawca: VDM Verlag
• Waga: 191 g
• Wymiary: 229 × 152 × 7 mm
• Data wydania: 19. March 2009

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