Theory

Models reveal potential synergies in management actions for bull kelp forest resilience and restoration featured image

Models reveal potential synergies in management actions for bull kelp forest resilience and restoration

1. Heatwaves are a growing threat to marine ecosystems. Kelps are particularly vulnerable because they require cool, nutrient-rich water to thrive. Heatwave conditions can also …

j.-wilson-white
Effects of predator novelty on intraguild predation communities with adaptive prey defense featured image

Effects of predator novelty on intraguild predation communities with adaptive prey defense

Understanding coexistence within community modules such as intraguild predation (IGP), where an omnivore both preys on and competes with an intermediate consumer for a shared …

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Kurt Ingeman
PressPurt - Network sensitivity to press perturbations under interaction uncertainty featured image

PressPurt - Network sensitivity to press perturbations under interaction uncertainty

While the use of networks to understand how complex systems respond to perturbations is pervasive across scientific disciplines, the uncertainty associated with estimates of …

david-koslicki
Collective behaviour can stabilize ecosystems featured image

Collective behaviour can stabilize ecosystems

Collective behaviour is common in bacteria, plants, and animals, and thus across ecosystems, from biofilms to cities. With collective behaviour, social interactions among …

ben-dalziel

The predictability of qualitative food web dynamics in response to extinction and invasion

Food webs are extraordinarily complex, containing myriad direct interactions and indirect effects. Determining how this network of interactions and effects influences a food web’s …

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David Rockow

Rapid and direct recoveries of predators and prey through synchronized ecosystem management

One of the twenty-first century’s greatest environmental challenges is to recover and restore species, habitats and ecosystems. The decision about how to initiate restoration is …

jameal-samhouri

Effects of predator introductions on population and community dynamics

There is increasing awareness that human activities are altering the ways that natural systems operate and that local shifts in species composition and abundance can lead to …

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Kurt Ingeman

Ecosystem context and historical contingency in apex predator recoveries

Habitat loss, overexploitation, and numerous other stressors have caused global declines in apex predators. This “trophic downgrading” has generated widespread concern because of …

adrian-stier
Characterizing species interactions to understand press perturbations: What is the community matrix? featured image

Characterizing species interactions to understand press perturbations: What is the community matrix?

The community matrix is among ecology's most important mathematical abstractions, formally encapsulating the interconnected network of effects that species have on one another's …

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Mark Novak
Selection on stability across ecological scales featured image

Selection on stability across ecological scales

Much of the focus in evolutionary biology has been on the adaptive differentiation among organisms. It is equally important to understand the processes that result in similarities …

jonathan-borrelli
Trophic omnivory across a productivity gradient: intraguild predation theory and the structure and strength of species interactions featured image

Trophic omnivory across a productivity gradient: intraguild predation theory and the structure and strength of species interactions

Intraguild predation theory centres on two predictions: (i) for an omnivore and an intermediate predator (IG-prey) to coexist on shared resources, the IG-prey must be the superior …

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Mark Novak
Probabilistic patterns of interaction: the effects of link-strength variability on food web structure featured image

Probabilistic patterns of interaction: the effects of link-strength variability on food web structure

Patterns of species interactions affect the dynamics of food webs. An important component of species interactions that is rarely considered with respect to food webs is the …

justin-yeakel

The Effect of Travel Loss on Evolutionarily Stable Distributions of Populations in Space

A key assumption of the ideal free distribution (IFD) is that there are no costs in moving between habitat patches. However, because many populations exhibit more or less …

donald-deangelis
Predicting community responses to perturbations in the face of imperfect knowledge and network complexity featured image

Predicting community responses to perturbations in the face of imperfect knowledge and network complexity

How best to predict the effects of perturbations to ecological communities has been a long‐standing goal for both applied and basic ecology. This quest has recently been revived …

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Mark Novak
Generalized modeling of ecological population dynamics featured image

Generalized modeling of ecological population dynamics

Over the past 7 years, several authors have used the approach of generalized modeling to study the dynamics of food chains and food webs. Generalized models come close to the …

justin-yeakel
Using experimental indices to quantify the strength of species interactions featured image

Using experimental indices to quantify the strength of species interactions

Few methods for demonstrating the effects of species interactions rival that of the manipulative experiment (Kareiva and Levin 2002). The now commonly performed removal or …

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Mark Novak

Trophic omnivory and the structure, strength, and nonlinear nature of species interactions across a productivity gradient

Two elements of food webs add significantly to their complexity: The presence of trophic omnivores and the nonlinear nature of predator-prey interactions. I introduce a new …

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Mark Novak
Estimating nonlinear interaction strengths: an observation-based method for species-rich food webs featured image

Estimating nonlinear interaction strengths: an observation-based method for species-rich food webs

Efforts to estimate the strength of species interactions in species‐rich, reticulate food webs have been hampered by the multitude of direct and indirect interactions such systems …

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Mark Novak