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Article
Extrapolating Contaminant Effects from Individuals to Populations: A Case Study on Nanoparticle Toxicity to Daphnia Fed Environmentally Relevant Food Levels
Ecological risk assessment (ERA) is charged with assessing the likelihood a chemical will have adverse environmental or ecological effects. When assessing the risk of a potential contaminant to biological orga...
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Article
Erratum to: Sensitivity analysis of continuous-time models for ecological and evolutionary theories
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Article
Sensitivity analysis of continuous-time models for ecological and evolutionary theories
Sensitivity analyses are of paramount importance in ecological and evolutionary theories, but their application to continuous time models has been virtually ignored from these fields. We present a simple and g...
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Article
A probabilistic framework for nutrient uptake length
The nutrient uptake length, the average displacement of a nutrient in a stream before being taken up by the biota, is an important quantity to characterize and compare streams and rivers, or to quantify certai...
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Article
Open AccessExperimental warming increases CO2 saturation in a shallow prairie pond
There is an urgent need to understand the effect of climate warming on the carbon dynamics of lakes and ponds in order to assess contributions to global carbon budgets. Currently, we are unable to predict how ...
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Small-amplitude cycles emerge from stage-structured interactions in Daphnia–algal systems
McCauley et al. blend theory and experiment to explore the dynamical mechanisms that give rise to different types of predator–prey cycles. Their theory predicts a new type of small-amplitude cycle that coexists w...
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Transient Responses to Spatial Perturbations in Advective Systems
We study the transient dynamics, following a spatially-extended perturbation of models describing populations residing in advective media such as streams and rivers. Our analyses emphasize metrics that are ind...
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Foraging behavior by Daphnia in stoichiometric gradients of food quality
Mismatches in the elemental composition of herbivores and their resources can impact herbivore growth and reproduction. In aquatic systems, the ratio of elements, such as C, P, and N, is used to characterize t...
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Article
Stage-structured cycles generate strong fitness-equalizing mechanisms
For many organisms, rates of reproduction, growth and mortality depend on the amount of resources that an individual consumes. When resource abundances fluctuate through space and time, the realized life-histo...
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Article
Effects of Heterogeneity on Spread and Persistence in Rivers
The question how aquatic populations persist in rivers when individuals are constantly lost due to downstream drift has been termed the “drift paradox.” Recent modeling approaches have revealed diffusion-media...
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Article
Mechanisms for consumer diversity (Reply)
We have demonstrated that qualitatively different consumer-resource dynamics can have a large impact on natural selection in a consumer population, and proposed that the change in selection is generated by the...
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Article
Stage-structured cycles promote genetic diversity in a predator–prey system of Daphnia and algae
Understanding how genetic diversity is maintained in nature is a fundamental problem. Existing theory assumes overly simple population dynamics, even though these dynamics are rarely supported by the evidence....
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Nutritional quality of seston for the freshwater herbivore Daphnia galeata × hyalina: biochemical versus mineral limitations
The quality of natural seston as food for zooplankters can be highly variable. Thus far, experimental evidence on the factors affecting food quality under natural conditions is scarce. Hence, in this study, we...
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Article
Habitat structure and population persistence in an experimental community
Understanding spatial population dynamics is fundamental for many questions in ecology and conservation1,2,3,4. Many theoretical mechanisms have been proposed whereby spatial structure can promote population pers...
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Nutritional constraints in terrestrial and freshwater food webs
Biological and environmental contrasts between aquatic and terrestrial systems have hindered analyses of community and ecosystem structure across Earth's diverse habitats. Ecological stoichiometry1,2 provides an ...
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Article
Large-amplitude cycles of Daphnia and its algal prey in enriched environments
Ecological theory predicts that stable populations should yield to large-amplitude cycles in richer environments1,2,3. This does not occur in nature. The zooplankton Daphnia and its algal prey in lakes throughout...
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Article
Predator–prey dynamics in environments rich and poor in nutrients
STABLE predator–prey models with a tension between the stabilizing effect of prey density-dependence and the destabilizing effect of predators generally become unstable when the nutrient environment of the pre...
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Three distinct types of dynamic behaviour shown by a single planktonic system
A wide range of dynamic behaviour has been uncovered by studying disparate predator–prey systems1, ranging over population stability, cycles and non-cyclic fluctuations. We know of no instance, however, in which ...
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Article
Cybernetic mechanisms in lake plankton systems: how to control undersirable algae
TOXIC algal blooms represent a serious nuisance in lakes and ponds. Not only do they form floating scums and impart odours and tastes to the water, but they are also associated with the occurrence of dermatiti...
