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    Author(s): Sarah I Rheubottom; Isabel C. Barrio; Mikhail V Kozlov; Juha M. Alatalo; Tommi Andersson; Ashley L. Asmus; Capucine Baubin; Francis Q. Brearley; Dagmar D. Egelkraut; Dorothee Ehrich; Gilles Gauthier; Ingibjörg Svala Jónsdóttir; Sophia Konieczka; Esther Lévesque; Johan Olofsson; Janet S. Prevéy; Guillaume Slevan-Tremblay; Aleksandr Sokolov; Natalia Sokolova; Svetlana Sokovnina; James D. M. Speed; Otso Suominen; Vitali Zverev; David S. Hik
    Date: 2019
    Source: Polar Biology. 42(10): 1881-1897.
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (826.0 KB)


    Invertebrate herbivores depend on external temperature for growth and metabolism. Continued warming in tundra ecosystems is proposed to result in increased invertebrate herbivory. However, empirical data about how current levels of invertebrate herbivory vary across the Arctic is limited and generally restricted to a single host plant or a small group of species, so predicting future change remains challenging. We investigated large-scale patterns of invertebrate herbivory across the tundra biome at the community level and explored how these patterns are related to long-term climatic conditions and year-of-sampling weather, habitat characteristics, and aboveground biomass production. Utilizing a standardized protocol, we collected samples from 92 plots nested within 20 tundra sites during summer 2015. We estimated the community-weighted biomass lost based on the total leaf area consumed by invertebrates for the most common plant species within each plot. Overall, invertebrate herbivory was prevalent at low intensities across the tundra, with estimates averaging 0.94% and ranging between 0.02 and 5.69% of plant biomass. Our results suggest that mid-summer temperature influences the intensity of invertebrate herbivory at the community level, consistent with the hypothesis that climate warming should increase plant losses to invertebrates in the tundra. However, most of the observed variation in herbivory was associated with other site level characteristics, indicating that other local ecological factors also play an important role. More details about the local drivers of invertebrate herbivory are necessary to predict the consequences for rapidly changing tundra ecosystems.

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    Rheubottom, Sarah I.; Barrio, Isabel C.; Kozlov, Mikhail V.; Alatalo, Juha M.; Andersson, Tommi; Asmus, Ashley L.; Baubin, Capucine; Brearley, Francis Q.; Egelkraut, Dagmar D.; Ehrich, Dorothee; Gauthier, Gilles; Jónsdóttir, Ingibjörg Svala; Konieczka, Sophia; Lévesque, Esther; Olofsson, Johan; Prevéy, Janet S.; Slevan-Tremblay, Guillaume; Sokolov, Aleksandr; Sokolova, Natalia; Sokovnina, Svetlana; Speed, James D. M.; Suominen, Otso; Zverev, Vitali; Hik, David S. 2019. Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biome. Polar Biology. 42(10): 1881-1897.


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    Background herbivory, biomass loss, climate change, community-weighted average, invertebrate, insects, tundra.

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