NDLI: Phenology and temporal niche overlap differ between novel, exotic- and native-dominated grasslands for plants, but not for pollinators

Content Provider	Springer Nature Link
Author	Martin, Leanne M. Harris, Mary A. Wilsey, Brian J.
Copyright Year	2015
Abstract	The temporal dynamics of ecosystem functioning and services are largely regulated by seasonal patterns, or phenology, of Earth’s biota. Recent evidence suggests that species in exotic-dominated systems may exhibit altered phenology relative to species in native-dominated systems. However, whether phenology of plants and pollinator communities differ between existing novel, exotic-dominated ecosystems and native-dominated systems remains poorly understood. We tested whether exotic- and native-dominated grasslands differed across a growing season for plant production, species and functional diversity, and bee pollinator abundances and diversity in the Northern Great Plains tallgrass prairie region, Iowa, USA. We found that niche overlap and some aspects of phenology in exotic-dominated systems were different from native systems for plants, but not for pollinators. Exotic dominated grasslands peaked earlier in biomass production, and exhibited consistently lower levels of species and functional diversity, including higher levels of proportion of C3 biomass, than native grasslands. These results were related to higher levels of temporal niche overlap in exotic grasslands, where species were similar across the growing season in exotic, but not in native, grasslands. Surprisingly, bee pollinator communities did not differ between exotic and native grasslands despite higher forb:grass ratios in native sites, implying that factors other than exotic-native status may be important in structuring pollinator communities at this scale in highly fragmented landscapes. Our results imply that phenological differences between communities in novel and native grasslands can have important consequences to diversity and ecosystem functioning, and that exotic or native status of plant species should be considered in future studies of phenology.
Starting Page	2633
Ending Page	2644
Page Count	12
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	17
Issue Number	9
e-ISSN	15731464
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-05-15
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bees Ecosystem functioning Diversity Grasslands Novel ecosystems Invasive Ecology Freshwater & Marine Ecology Plant Sciences Developmental Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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