Food webs articles within Nature Communications

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  • Article
    | Open Access

    Using prey size measurements from ten Southern Ocean lanternfish species sampled across >10° of latitude, this study shows that higher temperatures were associated with smaller fish and an overall decrease in the size of fish relative to their prey. Ocean warming may therefore alter the diversity and size structuring of trophic interactions, reducing the stability of marine ecosystems.

    • Patrick Eskuche-Keith
    • , Simeon L. Hill
    •  & Eoin J. O’Gorman

  • Article
    | Open Access

    Modelling diverse ecological phenomena across scales with a single mathematical framework is challenging. Here, the authors draw on density functional theory to develop a framework that bridges between mechanistic theories at fine scales and statistical models at large scales.

    • Martin-I. Trappe
    •  & Ryan A. Chisholm

  • Article
    | Open Access

    Aquatic (blue) and terrestrial (green) food webs are part of the same landscape, but it remains unclear whether they respond similarly to shared environmental gradients. Using long-term monitoring data from Switzerland and a metaweb approach, this study reveals how inferred blue and green food webs exhibit different properties along an elevation gradient and among land-use types.

    • Hsi-Cheng Ho
    • , Jakob Brodersen
    •  & Florian Altermatt

  • Article
    | Open Access

    Organisms can alter their physiological response to warming. Here, the authors show that the ability to raise metabolic rate following exposure to warming is inverse to body size and provide a mathematical model which estimates that metabolic plasticity could amplify energy flux through ecosystems in response to warming.

    • Rebecca L. Kordas
    • , Samraat Pawar
    •  & Eoin J. O’Gorman

  • Article
    | Open Access

    Food web responses to species losses have the potential to cascade to ecosystem services. Here the authors apply ecological network robustness modelling to ecosystem services in salt marsh ecosystems, finding that species with supporting roles are critical to robustness of both food webs and ecosystem services.

    • Aislyn A. Keyes
    • , John P. McLaughlin
    •  & Laura E. Dee

  • Article
    | Open Access

    Not all plants are equally able to support native insects. Here, the authors use data on interactions among >12,000 Lepidoptera species and >2000 plant genera across the United States, showing that few plant genera host the majority of Lepidoptera species; this information is used to suggest priorities for plant restoration.

    • Desiree L. Narango
    • , Douglas W. Tallamy
    •  & Kimberley J. Shropshire

  • Article
    | Open Access

    Broad scale patterns in the distribution of animal community functional properties could be determined by climate and disrupted by human activities. Here the authors show global patterns in large-mammal trophic structure related to climate variation, which human activities simplify in predictable ways.

    • Manuel Mendoza
    •  & Miguel B. Araújo

  • Article
    | Open Access

    Habitat loss could affect ecological communities in variable ways depending on its structure. Here, the authors show that contiguous rather than random loss is more damaging to the stability of multitrophic communities, regardless of the fraction of mutualistic interactions within the community.

    • Chris McWilliams
    • , Miguel Lurgi
    •  & Daniel Montoya

  • Article
    | Open Access

    The role of adaptive foraging in the threat of invasive pollinators to plant-pollinator systems is difficult to characterise. Here, Valdavinos et al. use network modelling to show the importance of foraging efficiency, diet overlap, plant species visitation, and degree of specialism in native pollinators.

    • Fernanda S. Valdovinos
    • , Eric L. Berlow
    •  & Neo D. Martinez

  • Article
    | Open Access

    Multiple environmental drivers of food chain length (FCL) have been proposed, but empirical support has been contradictory. Here the authors argue that the magnitude of vertical energy flux in ecological communities underlies two commonly evaluated drivers of FCL and show that the effects of these two drivers are context-dependent.

    • Colette L. Ward
    •  & Kevin S. McCann

  • Article
    | Open Access

    In a changing world, the ability to predict the impact of environmental change on ecological communities is essential. Here, the authors show that by separating species abundances from interaction preferences, they can predict the effects of habitat modification on the structure of weighted species interaction networks, even with limited data.

    • Phillip P. A. Staniczenko
    • , Owen T. Lewis
    •  & Felix Reed-Tsochas

  • Article
    | Open Access

    Effects of habitat restoration on belowground organisms and ecosystem processes are poorly understood. Morriën and colleagues show that changes in the composition and network interactions of soil biota lead to improved carbon uptake efficiency when formerly cultivated land is restored.

    • Elly Morriën
    • , S. Emilia Hannula
    •  & Wim H. van der Putten

  • Article
    | Open Access

    Losing animals from food webs could reduce ecosystem function, but drivers of this pattern are difficult to disentangle. With food web simulations, Schneider et al. show that high animal diversity does not release plants from top-down control owing to a balancing effect of increased animal body size.

    • Florian D. Schneider
    • , Ulrich Brose
    •  & Christian Guill

  • Article
    | Open Access

    Species sharing a common enemy such as a parasitoid or predator can indirectly affect one another. Here, Frost et al. use quantitative food-web data from communities of caterpillar hosts to show experimentally that apparent competition is important in predicting food-web structure across habitats.

    • Carol M. Frost
    • , Guadalupe Peralta
    •  & Jason M. Tylianakis

  • Article
    | Open Access

    A long-standing ecological hypothesis is that complexity should decrease stability in food webs. Here, Jacquet and colleagues analyse over 100 real-world food webs and show that complexity does not decrease stability, but that a high frequency of weak species interactions stabilizes complex food webs.

    • Claire Jacquet
    • , Charlotte Moritz
    •  & Dominique Gravel

  • Article
    | Open Access

    Top predators may indirectly influence ecological processes through fear-induced behavioural changes in their prey. By experimentally manipulating this ‘landscape of fear’, Suraci et al. show that fear of large carnivores in a mesopredator can cause cascading effects down the food web that benefit its prey.

    • Justin P. Suraci
    • , Michael Clinchy
    •  & Liana Y. Zanette

  • Article
    | Open Access

    The influence of species conservation on food webs is less well understood than the effects of species loss. Here, the authors test several indices against optimal food web management and find no current metrics are reliably effective at identifying species conservation priorities.

    • E. McDonald-Madden
    • , R. Sabbadin
    •  & H. P. Possingham

  • Article
    | Open Access

    How aquatic communities influence biogeochemical cycling is not well understood. Here, Devlin et al.manipulate the abundance of fish in a whole-lake experiment and show that methane efflux is reduced by the presence of top predators, via a trophic cascade from zooplankton to methanotrophic bacteria.

    • Shawn P. Devlin
    • , Jatta Saarenheimo
    •  & Roger I. Jones

  • Article |

    The formation of new feeding links by consumers adapting to the loss of prey is thought to buffer food webs against cascading extinctions. However, Ebenman et al.show that adaptive rewiring can still cause extinction cascades if predators are efficient at capturing rare prey, leading to overexploitation of resources.

    • David Gilljam
    • , Alva Curtsdotter
    •  & Bo Ebenman

  • Article |

    Intraspecific variation is known to cascade evolutionary change down through food webs, although bottom-up changes are less well described. Here, Brodersenet al. show that life history change in a prey fish species, mediated through anthropogenic activity, can promote phenotypic diversification of its top predator.

    • Jakob Brodersen
    • , Jennifer G. Howeth
    •  & David M. Post

  • Article
    | Open Access

    Climatic change is predicted to impact moisture-dependent ecosystems. Here Carroll et al. show that a combination of physical, biophysical and ecosystem processes determine the abundance and distribution of three bird species that feed on craneflies in blanket bogs.

    • Matthew J. Carroll
    • , Andreas Heinemeyer
    •  & Chris D. Thomas

  • Article
    | Open Access

    Understanding the dynamics of empirical food webs is of central importance for predicting the stability of ecological communities. Here Allesina et al.derive an approximation to accurately predict the stability of large food webs whose structure is built using the cascade model.

    • Stefano Allesina
    • , Jacopo Grilli
    •  & Amos Maritan

  • Article
    | Open Access

    How mechanisms underlying food-web stability may influence ecosystem regime shifts is not well understood. Combining food-web and ecosystem modelling, Kuiperet al. show that destabilizing reorganization of a small number of key trophic interactions precede catastrophic changes in shallow lake ecosystems.

    • Jan J. Kuiper
    • , Cassandra van Altena
    •  & Wolf M. Mooij

  • Article
    | Open Access

    The influence of functional group diversity on food web structure is less well known than that of biodiversity. Analysing species interactions in a network of salt marsh islands, Montoya et al. show that functional group diversity is higher in more modular networks and varies spatially across the archipelago.

    • D. Montoya
    • , M.L. Yallop
    •  & J. Memmott

  • Article |

    Species responses to climatic change are likely to be complex, acting across multiple trophic levels and life stages. Here the authors show that Arctic charr are negatively impacted by trophic mismatches affecting both juveniles and fry, which may be responsible for recent poor catches of this fish.

    • Tomas Jonsson
    •  & Malin Setzer

  • Article |

    The Western Antarctic Peninsular is subject to climate change, including increased winter temperatures and melting sea ice. In this study, the authors demonstrate that climate change in this area effects bacteria and phytoplankton levels, which culminates in an altered diet for the apex predator, the Adélie penguin.

    • Grace K. Saba
    • , William R. Fraser
    •  & Oscar M. Schofield

  • Article |

    The analysis of food web properties under different environmental conditions informs us how the ecosystem functions. Here, Tunneyet al. use post-glacial lakes as model ecosystems to show how macroscopic patterns of food webs vary with changes in habitat and resource accessibility.

    • Tyler D. Tunney
    • , Kevin S. McCann
    •  & Brian J. Shuter

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