Shifting phenology and abundance under experimental warming alters trophic relationships and plant reproductive capacity.
In: Ecology, Jg. 92 (2011-06-01), Heft 6, S. 1201-1207
Online
academicJournal
Zugriff:
Phenological mismatches due to climate change may have important ecological consequences. In a three-year study, phenological shifts due to experimental warming markedly altered trophic relationships between plants and insect herbivores, causing a dramatic decline of reproductive capacity for one of the plant species. In a Tibetan meadow, the gentian (Gentiana formosa) typically flowers after the peak larva density of a noctuid moth (Melanchra pisi) that primarily feeds on a dominant forb (anemone, Anemone trullifolia var. linearis). However, artificial warming of ~1.5°C advanced gentian flower phenology and anemone vegetative phenology by a week, but delayed moth larvae emergence by two weeks. The warming increased larval density 10-fold, but decreased anemone density by 30%. The phenological and density shifts under warmed conditions resulted in the insect larvae feeding substantially on the gentian flowers and ovules; there was ~100-fold more damage in warmed than in unwarmed chambers. This radically increased trophic connection reduced gentian plant reproduction and likely contributed to its reduced abundance in the warmed chambers. [ABSTRACT FROM AUTHOR]
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Shifting phenology and abundance under experimental warming alters trophic relationships and plant reproductive capacity.
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Autor/in / Beteiligte Person: | Liu, Yinzhan ; Reich, Peter B. ; Li, Guoyong ; Sun, Shucun |
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Zeitschrift: | Ecology, Jg. 92 (2011-06-01), Heft 6, S. 1201-1207 |
Veröffentlichung: | 2011 |
Medientyp: | academicJournal |
ISSN: | 0012-9658 (print) |
DOI: | 10.1890/10-2060.1 |
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