| Title | Temporal dynamic of parasite-mediated linkages between the forest canopy and soil processes and the microbial community |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Mellado A., Morillas L., Gallardo A., Zamora R. |
| Journal | New Phytologist |
| Volume | 211 |
| Pagination | 1382-1392 |
| Date Published | Sep |
| Type of Article | Article |
| ISBN Number | 0028-646X |
| Accession Number | WOS:000380961200024 |
| Keywords | BARTSIA-ALPINA, diversity, ecosystem, ecosystem engineer, EXCHANGE MEMBRANES, FUNCTION, functional evenness, host-parasite interaction, land-use, microbial community, MicroResp, MISTLETOE VISCUM-ALBUM, mutualistic interaction, parasitic, PINUS-SYLVESTRIS, plant, PLANT LITTER, plant-soil interactions, SEED DISPERSAL, SEMIARID SAVANNA |
| Abstract | Parasitic plants are important drivers of community and ecosystem properties. In this study, we identify different mechanisms by which mistletoe (Viscum album subsp. austriacum) can affect soil chemical and biological properties at different temporal stages of parasitism. We quantified the effect of parasitism on host growth and the number of frugivorous mutualists visiting the host canopy. Then we collected, identified, and weighed the organic matter input underneath tree canopies and analyzed its nutrient content. Simultaneously, we analyzed soil samples under tree canopies and examined the chemical properties, microbial abundance, and functional evenness of heterotrophic microbial communities. Mistletoe increased the amount, quality, and diversity of organic matter input beneath the host canopy, directly through its nutrient-rich litter and indirectly through a reduction in host litterfall and an increase in bird-derived debris. All these effects gave rise to enriched hotspots able to support larger and more functionally even soil microbial communities beneath parasitized hosts, the effects of which were accentuated after host death. We conclude that mistletoe, together with the biotic interactions it mediates, plays a key role in intensifying soil resource availability, regulating the functional evenness, abundance, and spatial distribution of soil microbial communities.
|
| Short Title | New Phytol.New Phytol. |
| Alternate Journal | New Phytol. |
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Mellado, Ana Morillas, Lourdes Gallardo, Antonio Zamora, Regino
Spanish MICINN [MUERDAME CGL2008-04794, CLAVINOVA CGL2011-29910]; FPI from the Spanish Ministry of Science and Innovation (MICINN) [BES-2009-023219]
We are grateful to Ramon Ruiz Puche, Susana Hitos, Ana Prado Comesana and Cristina Alelly Lopez for their excellent work in the field and laboratory, Ian Dickie, David Watson and an anonymous reviewer for their valuable contributions and comments on the article, and David Nesbitt for checking the English of this paper. We thank the Consejeria de Medio Ambiente (Junta de Andalucia) and the Director of the Sierra de Baza Natural Park for permission to carry out the field work. This study was supported by the Spanish MICINN Projects MUERDAME CGL2008-04794 and CLAVINOVA CGL2011-29910 (grants to R.Z.), and an FPI grant BES-2009-023219 to A.M. from the Spanish Ministry of Science and Innovation (MICINN).
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Mellado, A (reprint author), Univ Granada, Dept Ecol, Terr Ecol Res Grp, Ave Fuentenueva S-N, E-18071 Granada, Spain.
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