uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/0032621b62e1531b105b5a290a7a7452 Aaron Ellison https://orcid.org/0000-0003-4151-6081 Benjamin Baiser Researcher Nathaniel Whitaker Researcher 2023 English

Foundation species are basal species that play an important role in determining community composition by physically structuring ecosystems and modulating ecosystem processes. Foundation species largely operate via non-trophic interactions, presenting a challenge to incorporating them into food-web models. Here, we used non-linear, bioenergetic predator-prey models to explore the role of foundation species and their non-trophic effects. We explored four types of models in which the foundation species reduced the metabolic rates of species in a specific trophic position. We examined the outcomes of each of these models for six metabolic rate “treatments” in which the foundation species altered the metabolic rates of associated species by one-tenth to ten times their allometric baseline metabolic rates. For each model simulation, we looked at how foundation species influenced food-web structure during community assembly and the subsequent change in food-web structure when the foundation species was removed. When a foundation species lowered the metabolic rate of only basal species the resultant webs were complex, species-rich, and robust to foundation species removals. On the other hand, when a foundation species lowered the metabolic rate of only consumer species, all species, or no species the resultant webs were species poor and the subsequent removal of the foundation species webs resulted in the further loss of species and complexity. This suggests that in nature we should look for foundation species to predominantly facilitate basal species.

food webs metabolism modeling trophic structure LTER controlled vocabulary primary production populations LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf211 Global. Coordinates based on WGS84 datum. -180 +180 +90 -90 complete Information Manager Harvard Forest

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(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

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(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf211-01-fex1.txt MatLab code for model runs and output. Built and run under MatLab R2011a. hf211-01-fex1.txt 20488 50732bff797386b116a5f05e5e2350b7 none Matlab script https://harvardforest.fas.harvard.edu/data/p21/hf211/hf211-01-fex1.txt script hf211-02-f1.txt MatLab code for iterating each time step (Equations 2a and 2b in Baiser et al. 2013). Called by hf211-01-fex1.txt. hf211-02-f1.txt 486 721efc3ad0567a1813e52328b22ccf87 none Matlab script https://harvardforest.fas.harvard.edu/data/p21/hf211/hf211-02-f1.txt script informatics modeling https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf108 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf119 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf160 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf193 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf179 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf107 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf208 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf065 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf106 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf203