NDLI: Plant–flower visitor networks in a serpentine metacommunity: assessing traits associated with keystone plant species

Content Provider	Springer Nature Link
Author	Koski, Matthew H. Meindl, George A. Arceo Gómez, Gerardo Wolowski, Marina LeCroy, Kathryn A. Ashman, Tia Lynn
Copyright Year	2014
Abstract	Consistent topology of plant–pollinator networks across space may be due to substitutability of the plant species most important for community function (keystone species). It is unclear, however, whether keystone species identity varies within a community type and what traits underlie this variation. Using a network biology approach, we assess whether keystone plant species vary across a metacommunity of five serpentine seeps in California and determine the features that predict their identity. We define keystone species as those with high strength, low node specialization index (NSI), and/or low d′ and determine whether these parameters are predicted by floral traits (flower biomass, number of open flowers per plant, symmetry, or stamen number) and/or ecological features (variation in local floral abundance, endemism) within seeps and across the metacommunity. Keystone species identity varied among seeps and was associated with local flower abundance: mean floral abundance correlated positively with strength but negatively with NSI within most seeps as well as across the metacommunity. For the metacommunity, flower biomass correlated negatively with NSI while variation in flower abundance correlated negatively with strength. Across the metacommunity, the d′ metric was associated with flower biomass, whereby plants with smaller flowers interacted with the most abundant pollinators across the metacommunity. Results suggest that connectance and interaction evenness may not be greatly influenced by community composition turnover due to substitution of keystone plant species across space. Keystone species can be predicted by functional traits but which trait (flower abundance or size) depended on the metric used and the level observed.
Starting Page	9
Ending Page	21
Page Count	13
File Format	PDF
ISSN	18728855
Journal	Arthropod-Plant Interactions
Volume Number	9
Issue Number	1
e-ISSN	18728847
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-01-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Functional groups Metacommunity Network Plant–pollinator interaction Serpentine soil Spatial variation Entomology Invertebrates Plant Sciences Ecology Behavioral Sciences Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Insect Science Agronomy and Crop Science

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