2 Works

Confronting assumptions about prey selection by lunge-feeding whales using a process-based model

Ellen Chenoweth, Kevin Boswell, Ari Friedlaender, Megan McPhee, Julia Burrows, Ron Heintz & Jan Straley
The relative energetic benefits of foraging on one type of prey rather than another are not easily measured, particularly for large free-ranging predators. Nonetheless, assumptions about preferred and alternative prey are frequently made when predicting how a predator may impact its environment, adapt to environmental change, or interact with human activities. We developed and implemented a process-based model to investigate the potential energetic benefit (PEB) of in situ foraging opportunities in rorqual whales. The model...

Data from: Trematode parasites exceed aquatic insect biomass in Oregon stream food webs

Daniel Preston, Tamara Layden, Leah Segui, Landon Falke, Sara Brant & Mark Novak
1) 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 provide the primary pathways for energy transfer. 2) To examine the contributions of parasites to ecosystem energetics in freshwater streams, we quantified the standing biomass of trematodes and free-living organisms at nine sites in three streams in western Oregon, USA. We then compared rates of biomass flow from snails (Juga...

Registration Year

  • 2020
    2

Resource Types

  • Dataset
    2

Affiliations

  • Reed College
    2
  • Oregon State University
    1
  • University of Alaska Fairbanks
    1
  • University of Wisconsin-Madison
    1
  • Florida International University
    1
  • University of Alaska Southeast
    1
  • Sitka Sound Science Center
    1
  • University of New Mexico
    1