Streams

Age-prevalence curves in a multi-species parasite community featured image

Age-prevalence curves in a multi-species parasite community

The relationship between infection prevalence and host age is informative because it can reveal processes underlying disease dynamics. Most prior work has assumed that …

avatar
Dan Preston
Trematode parasites exceed aquatic insect biomass in Oregon stream food webs featured image

Trematode parasites exceed aquatic insect biomass in Oregon stream food webs

Although parasites are increasingly recognized for their ecosystem roles, it is often assumed that free-living organisms dominate animal biomass in most ecosystems and therefore …

avatar
Dan Preston
Temporal shifts in intraspecific and interspecific diet variation among 3 stream predators featured image

Temporal shifts in intraspecific and interspecific diet variation among 3 stream predators

Intraspecific variation is increasingly recognized as an important factor in ecological interactions that can exceed the role of interspecific variation. Few studies, however, …

avatar
Landon Falke
State-structured species interactions and their consequences across levels of biological organization featured image

State-structured species interactions and their consequences across levels of biological organization

A central challenge for ecology is to understand the dynamic nature of species interactions. A classic approach to community ecology assumes that individuals within a species are …

avatar
Leah Segui
Food-web interaction strength distributions are conserved by greater variation between than within predator--prey pairs featured image

Food-web interaction strength distributions are conserved by greater variation between than within predator--prey pairs

Species interactions in food webs are usually recognized as dynamic, varying across species, space, and time because of biotic and abiotic drivers. Yet food webs also show …

avatar
Dan Preston
What drives interaction strengths in complex food webs? A test with feeding rates of a generalist stream predator featured image

What drives interaction strengths in complex food webs? A test with feeding rates of a generalist stream predator

Describing the mechanisms that drive variation in species interaction strengths is central to understanding, predicting, and managing community dynamics. Multiple factors have been …

avatar
Dan Preston
Using Survival Models to Estimate Invertebrate Prey Identification Times in a Generalist Stream Fish featured image

Using Survival Models to Estimate Invertebrate Prey Identification Times in a Generalist Stream Fish

Estimates of predator feeding rates are important for understanding trophic dynamics. One common method for quantifying feeding rates in fishes combines mass‐based diet data with …

avatar
Dan Preston

Contributions of parasites to energy flow through a stream food web

Parasites are increasingly recognized for their significant roles in shaping community structure and ecosystem dynamics. Due to their cryptic nature, however, they are often …

avatar
Tamara Layden

Competitive mechanisms underlying the displacement of native crayfish by non-native crayfish

Invasive species are one of the greatest threats to biodiversity around the world. Although a seemingly harmless act, species introduction into a new ecosystem can have …

avatar
Wendy Saepharn
Using the functional response of a consumer to predict biotic resistance to invasive prey featured image

Using the functional response of a consumer to predict biotic resistance to invasive prey

Predators sometimes provide biotic resistance against invasions by nonnative prey. Understanding and predicting the strength of biotic resistance remains a key challenge in …

laura-twardochleb
Nestedness patterns and the dual nature of community reassembly in California streams: a multivariate permutation-based approach featured image

Nestedness patterns and the dual nature of community reassembly in California streams: a multivariate permutation-based approach

Many factors contribute to the nonrandom processes of extinctions and invasions that are changing the structure of ecological communities worldwide. These factors include the …

avatar
Mark Novak