Experimental shifts in exotic flowering phenology produce strong indirect effects on native plant reproductive success ...
By causing phenological shifts that vary among species, climate change is altering time envelopes for species interactions, often with unexpected demographic consequences. Indirect interactions, like apparent competition and apparent facilitation, are especially likely to change in duration because...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2020
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.gqnk98sj0 https://datadryad.org/stash/dataset/doi:10.5061/dryad.gqnk98sj0 |
| Summary: | By causing phenological shifts that vary among species, climate change is altering time envelopes for species interactions, often with unexpected demographic consequences. Indirect interactions, like apparent competition and apparent facilitation, are especially likely to change in duration because they involve multiple interactors, increasing the likelihood of asynchronous phenological shifts by at least one interactor. Thus, we might observe ecological surprises if intermediaries of indirectly interacting species change their mediating behavior. We explored this possibility in a plant-pollinator community that is likely to experience asynchronous phenological shifts. We advanced and delayed the flowering phenology of two ubiquitous exotic plants of western Washington prairies, Hypochaeris radicata and Cytisus scoparius, relative to seven native perennial forb species whose phenologies remained unmanipulated. These species interact indirectly through shared pollinators, whose foraging behavior influences ... : Three datasets here include flowering phenology, pollinator visitation, and seed production data for prairie forbs native to western Washington, USA. Data were collected at Glacial Heritage Prairie in Littlerock, WA from July-August 2011. We experimentally altered flowering phenology for two exotic species (Cytisus scoparius and Hypochaeris radicata) and looked at effects on seedset of seven neighboring native forbs (Ranunculus occidentalis, Camassia quamash, Microseris laciniata, Lupinus lepidus, Eriophyllum lanatum, Prunella vulgaris, Campanula rotundifolia). We established 48 5x5 m plots in a randomized block design, with eight blocks each containing one plot for each of six phenology treatments. Within blocks, plots were randomly located, with the constraint that they must contain at least 6 naturally occurring individuals of each of the native species. While other forb species were present in plots, they never occurred at high densities relative to focal species. Naturally occurring C. scoparius was ... |
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