StreamCLIMES is a collaborative research project with Michael Bogan at the University of Arizona, Katie Costigan at the University of Louisiana Lafayette, Meryl Mims at Virginia Tech, Ben Ruddell and Abe Springer at Northern Arizona University, Albert Ruhi at the University of California Berkeley, Robert Pastel at Michigan Tech University, and Tom Neeson and Yang Hong at the University of Oklahoma.

Together we will conduct one of the first coordinated projects to investigate how drying affects stream ecosystems in different climates across the southern half of the US.  The work includes a significant field based component that integrates NEON stream research sites, where we will document the biodiversity, food web structure, and genetic connectivity of stream benthic invertebrate communities at perennial (continuously flowing) and intermittent (non-continuously flowing) stream sites.  We will also develop a smartphone app designed for researchers and citizen scientists to map wet and dry reaches of streams and rivers.  Later phases will include developing hydrological models that will predict stream drying patterns in the study river systems under different climate scenarios including climate oscillations and climate change, and spatial ecological models that will integrate field-collected data and hydrological model outputs to project how stream ecosystems will respond to large scale climate variability. This project is funded by the National Science Foundation Macrosystem Biology program.


The Dry Rivers Research Coordination Network is a network of ecologists and hydrologists who study streams. The DryRiversRCN will focus on advancing our understanding of “intermittent” rivers and streams, those which stop flowing or completely dry at some point in time. Historically these rivers and streams have been understudied or even ignored by researchers, but research has begun to show that the hydrology and ecology of intermittent rivers are very different from rivers that always flow. This means our current scientific understanding of streams and rivers is not accurate, as is biased towards the half of the Earth’s rivers that continuously flow and against the half that do not. We will organize a series of expert workgroups that will synthesize the growing body of research on intermittent river hydrology and ecology.

Collaborators on this project include Katie Costigan, Kate Boersma, Michael Bogan, Thibault Datry, Ken Fritz, Sarah Godsey, Stephanie Kampf, Meryl Mims, Julian Olden, Albert Ruhi, Adam Ward, Margaret Zimmer, Emily Bernhardt, Walter Dodds, Jay Jones, and others. You can follow us on twitter @DryRiversRCN. This project is jointly funded by the National Science Foundation Divisions of Biology and Geosciences.

The Hunt for the Ozark Emerald

The Ozark Emerald (Somatochlora ozarkensis) a regionally endemic dragonfly and identified as a Tier II species of greatest conservation need by the Oklahoma Department of Wildlife Conservation. We will conduct adult surveys and aquatic macroinvertebrate sampling with the primary focus being the discovery of Ozark Emerald larvae, which are unknown from the wild. Sampling will help determine the habitat of larval Ozark Emeralds and what macroinvertebrate species co-occur with them. We also will survey crayfish communities at the study sites, with special attention toward the Kiamichi Crayfish (Orconectes saxatilis), a Tier I species, and the Mena and Ouachita Mountain Crayfish (O. menaeand Procambarus tenuis), both Tier II species. Second, we will compile crayfish data from previous research projects in the Ouachita Mountains/West Gulf Coastal Plain Region. Allen Lab postdoc Dr. Daniel Nelson will be leading this project, and odonate specialist Brenda Smith from the Oklahoma Biological Survey is also a co-PI on the project. This project is funded by the Oklahoma Department of Wildlife Conservation.

 Ozark Emerald,  Somatochlora ozarkensis

Ozark Emerald, Somatochlora ozarkensis

Chasing the Peppered Shiner

The Oklahoma Department of Wildlife Conservation has identified the Peppered Shiner, Notropis perpallidus, as a Tier I species of greatest conservation need.  This is a very rare species restricted to a relatively small geographic region in a few rivers in the south-central United States, and it has not been collected in Oklahoma since 1991. Here we will collaborate with Dr. Bill Matthews, renowned fish ecologist and Professor Emeritus at the University of Oklahoma, to conduct targeted surveys for Peppered Shiner in the Kiamichi, Little, Glover, and Mountain Fork Rivers in southeast Oklahoma from 2018-2020. This project is funded by the Oklahoma Department of Wildlife Conservation.

 Peppered shiner,  Notoropis perpallidus

Peppered shiner, Notoropis perpallidus