A bioenergetic framework for aboveground terrestrial food webs

Valdovinos, Fernanda S.; Hale, Kayla R. S.; Dritz, Sabine; Glaum, Paul; McCann, Kevin S.; Simon, Sophia; Thébault, Élisa; Wetzel, William C.; Wootton, Kate L.; Yeakel, Justin D.

doi:10.1016/j.tree.2022.11.004

Cited by 10 publications

(15 citation statements)

References 92 publications

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“…To determine criteria for including interactions in our food web, we applied a recently-proposed framework for studying aboveground terrestrial food webs (ATFWs, Valdovinos et al 2023). This framework asserts that the complexity of plant tissues fundamentally distinguishes aboveground terrestrial ecosystems from their aquatic and belowground counterparts, shaping the structure and dynamics of ATFWs through distinctive patterns of growth and turnover.…”

Section: Methodsmentioning

confidence: 99%

“…A single set of observations provides only a “snapshot” of an ecosystem (Dunne et al 2006, de Aguiar et al 2019), biased by the specific spatial (vertical versus horizontal transects, microhabitats) and temporal (seasonal, diurnal, duration) scales of sampling, as well as the taxonomic expertise of the investigators (including ability to catch and identify organisms). Species also exhibit adaptive foraging and defensive behaviors, effectively “rewiring” trophic interactions in response to changing biotic and abiotic conditions (Bartley et al 2019, Ceron et al 2022, Valdovinos et al 2023). As such, limited surveys miss rare or cryptic species and interactions, even though such species and interactions likely provide critical contributions to ecosystem dynamics and function (Dee et al 2019, Simpson et al 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, antagonistic interactions can be mutualistic, such as when herbivory stimulates greater plant production in a phenomenon called overcompensation (Ramula et al 2019). Therefore, there is growing consensus (Abrams 1987, McCall & Irwin 2006, Holland & DeAngelis 2009, Valdovinos et al 2023) that feeding interactions should be differentiated by their mediating traits (phenology, ontogeny, morphology), tissues (nectar, fruit, leaves), and bioenergetic or demographic consequences (yields and production costs), rather than their presumptive net effects.…”

Section: Introductionmentioning

confidence: 99%

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A highly resolved network reveals the role of terrestrial herbivory in structuring aboveground food webs

Hale,

Curlis,

Auteri

et al. 2023

Preprint

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Terrestrial ecosystems support rich communities of species feeding on each other in different ways. Insects and plants comprise much of this species richness, but the structure of their feeding interactions in aboveground terrestrial food webs is not well known. Historically, food web research has coarsely or unevenly grouped insects and plants, excluded “mutualistic” feeding interactions (e.g., pollinators eating nectar), and focused only on subsets of species or feeding interactions, especially “antagonistic” interactions involving tetrapods. Here, we combine public data and records from a biological research station into a cumulative food web of ∼580,000 interactions among ∼3,800 species in a temperate hardwood forest ecosystem. We include all feeding interactions, subdivided by whether animal tissues or plant leaves, flowers, fruits, or wood are being eaten. We represent these different types of feeding interactions in a multiplex food web and study the effect of taxonomic resolution on our understanding of food web structure. Our results indicate that insect herbivores engage in highly species– and tissue-specific feeding that is inaccurately represented by coarse taxonomic groups. The food web presented here is the richest and most evenly-resolved representation of feeding interactions yet reported and provides a tool for future management and research on terrestrial ecosystems.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A highly resolved network reveals the role of terrestrial herbivory in structuring aboveground food webs

Hale,

Curlis,

Auteri

et al. 2023

Preprint

Self Cite

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“…In such ecosystems, carnivorous interactions commonly follow allometric relationships, where larger predators consume smaller prey species (Brose et al 2019). However, in aboveground terrestrial ecosystems herbivorous interactions are largely independent of body masses (Valdovinos et al 2022). Hence, we defined herbivorous interactions to follow real world network properties (i.e.…”

Section: Defining Food Web Topologiesmentioning

confidence: 99%

Animal movement and plant space-use drive plant diversity-productivity relationships

Albert

Gauzens

Ryser

et al. 2023

Preprint

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Plant community productivity generally increases with biodiversity, but the strength of this relationship exhibits strong empirical variation. In meta-food-web simulations, we addressed if the spatial overlap in plants’ resource access and movement of animals can explain such variability. We found that spatial overlap of plant resource access is a prerequisite for positive diversity-productivity relationships, but causes exploitative competition that can lead to competitive exclusion. Movement of herbivores causes apparent competition among plants, resulting in negative relationships. However, movement of larger top predators integrates sub-food-webs composed of smaller species, offsetting the negative effects of exploitative and apparent competition and leading to strongly positive diversity-productivity relationships. Overall, our results show that spatial overlap of plant resource access and animal movement can greatly alter the strength and sign of such relationships. In particular, the scaling of animal movement effects opens new perspectives for linking landscape processes without effects on biodiversity to productivity patterns.

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“…In such ecosystems, carnivorous interactions commonly follow allometric relationships, where larger predators consume smaller prey (Brose et al, 2019). However, in aboveground terrestrial ecosystems, herbivorous interactions are largely independent of body masses (Valdovinos et al, 2022). Hence, we defined herbivorous interactions to follow real-world network properties (i.e.…”

Section: Defining Food Web Topologiesmentioning

confidence: 99%

Animal and plant space‐use drive plant diversity–productivity relationships

et al. 2023

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Plant community productivity generally increases with biodiversity, but the strength of this relationship exhibits strong empirical variation. In meta‐food‐web simulations, we addressed if the spatial overlap in plants' resource access and animal space‐use can explain such variability. We found that spatial overlap of plant resource access is a prerequisite for positive diversity–productivity relationships, but causes exploitative competition that can lead to competitive exclusion. Space‐use of herbivores causes apparent competition among plants, resulting in negative relationships. However, space‐use of larger top predators integrates sub‐food webs composed of smaller species, offsetting the negative effects of exploitative and apparent competition and leading to strongly positive diversity–productivity relationships. Overall, our results show that spatial overlap of plants' resource access and animal space‐use can greatly alter the strength and sign of such relationships. In particular, the scaling of animal space‐use effects opens new perspectives for linking landscape processes without effects on biodiversity to productivity patterns.

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A bioenergetic framework for aboveground terrestrial food webs

Cited by 10 publications

References 92 publications

A highly resolved network reveals the role of terrestrial herbivory in structuring aboveground food webs

A highly resolved network reveals the role of terrestrial herbivory in structuring aboveground food webs

Animal movement and plant space-use drive plant diversity-productivity relationships

Animal and plant space‐use drive plant diversity–productivity relationships

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