Parasitic plants as facilitators: more Dryad than Dracula?
@article{Watson2009ParasiticPA, title={Parasitic plants as facilitators: more Dryad than Dracula?}, author={David M. Watson}, journal={Journal of Ecology}, year={2009}, volume={97} }
1 Despite being components of most vegetation types, the community‐level effects of parasitic plants are often ignored. The few studies adopting a broader view have revealed that these plants mediate a series of direct and indirect competitive and facilitative effects on community structure and ecosystem processes. 2 I summarize findings from the two best‐studied systems: a set of experimental and manipulative studies from northern Sweden and an integrated research programme in southern…
94 Citations
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References
SHOWING 1-10 OF 92 REFERENCES
Parasitic plants—impacts on nutrient cycling
- Environmental SciencePlant and Soil
- 2008
The impact of root hemiparasitic plants on in-situ nitrogen dynamics in intact field vegetation is examined for the first time, using 15N techniques, to reinforce the need to include parasitic plants in community and ecosystem theory and emphasise that understanding the roles of parasites in ecosystems is relevant for understanding ecosystem dynamics in a changing world.
Impacts of parasitic plants on natural communities.
- Environmental ScienceThe New phytologist
- 2005
Parasitic plants can alter the physical environment around them--including soil water and nutrients, atmospheric CO2 and temperature--and so may also be considered as ecosystem engineers, which can have further consequences in altering the resource supply to and behaviour of other organisms within parasitic plant communities.
Parasitic plants indirectly regulate below-ground properties in grassland ecosystems
- Environmental ScienceNature
- 2006
This study shows in model grassland communities that the parasitic plant Rhinanthus minor, which occurs widely throughout Europe and North America, has strong direct effects on above-ground community properties, increasing plant diversity and reducing productivity, and that these direct effects of R. minor have marked indirect effects on below-ground properties, ultimately increasing rates of nitrogen cycling.
The Population Dynamics and Community Ecology of Root Hemiparasitic Plants
- Environmental ScienceThe American Naturalist
- 2000
Models of resource‐based competition have been extended to include resource parasitism to understand the population dynamics and community ecology of root hemiparasitic plants and their hosts and predict that as productivity in the system increases, parasitic plants should become more abundant.
Litter of the hemiparasite Bartsia alpina enhances plant growth: evidence for a functional role in nutrient cycling
- Environmental ScienceOecologia
- 2003
The enhanced nutrient uptake and growth of plants in the presence of Bartsia alpina (and potentially other hemiparasitic species) litter could have important implications for communities in which it occurs, including enhanced survival of seedlings of co-occurring species and increased resource patchiness.
Impact of a parasitic plant on the structure and dynamics of salt marsh vegetation
- Environmental Science
- 1996
The results indicate that parasitic plants can have strong effects on the structure and dynamics of natural vegetation assemblages, however, these effects are mediated by phys- ical and biological gradients across the landscape.
The impact of hemiparasitic plant litter on decomposition: direct, seasonal and litter mixing effects
- Environmental Science
- 2005
It is concluded that hemiparasites have a particular functional role in sub-arctic heath systems: in effect they ‘short circuit’ generally slow nutrient cycles, with potential impacts on resource patchiness and local scale biodiversity.
Hemiparasites generate environmental heterogeneity and enhance species coexistence in salt marshes.
- Environmental ScienceEcological applications : a publication of the Ecological Society of America
- 2008
It is demonstrated that parasite-host associations can enhance the amelioration of physical stress conditions in the salt marsh exceeding the passive role of shading by vegetation.
MISTLETOE-A KEYSTONE RESOURCE IN FORESTS AND WOODLANDS WORLDWIDE
- Environmental Science
- 2001
This review consolidates records of mistletoe-vertebrate interactions, incorporating species from 97 vertebrate families recorded as consumingMistletoe and from 50 using mistle toe as nesting sites to synthesize results from studies of misteltoe-animal interactions.
Determinants of parasitic plant distribution: the role of host quality.
- Environmental Science
- 2009
The “host-quality hypothesis” is proposed, suggesting that variation in the quality of potential hosts can account for nonrandom omissions from host ranges and site–microsite preferences for particular species.