Johanna Kraus, PhD
Dr. Johanna M. Kraus is a Research Ecologist at the Columbia Environmental Research Center.
She studies effects of anthropogenic stressors on food webs, biodiversity and environmental health in aquatic and terrestrial ecosystems. She began her career with the USGS in 2011 researching how trace metals from acid rock drainage impact adult aquatic insect emergence and contaminant flux to terrestrial insectivores near mountain streams. Since then, her research has uncovered when and where contaminants may impact aquatic and terrestrial food webs using large empirical field studies, laboratory manipulations and conceptual modelling. Dr. Kraus received her B.A. in Biology from Brown University and Ph.D. in Biology from the University of Virginia.
Professional Experience
Research Ecologist, U.S. Geological Survey, 2016 - present
Mendenhall Research Fellow, U.S. Geological Survey 2011- 2015
Post-doctoral Researcher, Biology, Virginia Commonwealth University, 2007-2010
Visiting Assistant Professor, Biology, Washington and Lee University, 2006-2007
National Science Foundation EAPSI Fellow, Japan, 2006
Education and Certifications
Ph.D., Biology, University of Virginia, 2006
B.A., Biology, Brown University, honors, magna cum laude, 1998
Science and Products
Filter Total Items: 34
Metamorphosis and the impact of contaminants on ecological subsidies
Animals with complex life histories such as aquatic insects and amphibians link freshwater and terrestrial ecosystems when they transition from water to land during development. This transition requires metamorphosis from juvenile to adult life stages. Metamorphosis is a stressful and ecologically sensitive life history event. Exposure to contaminants during juvenile development (before...
Authors
Jeff S. Wesner, Johanna M. Kraus, Brianna L. Henry, Jacob L. Kerby
Cross-ecosystem linkages and trace metals at the land-water interface
At low concentrations, trace metals are critical for sustaining life on Earth. However, at high concentrations, they become a global contaminant with particularly strong effects on freshwater communities. These effects can propagate to terrestrial ecosystems in part by altering production and community structure of adult aquatic insect emergence and aquatic insect-mediated metal fluxes...
Authors
Johanna M. Kraus, Justin Pomeranz
Synthesis: A framework for predicting the dark side of ecological subsidies
In this chapter, we synthesize the state of the science regarding ecological subsidies and contaminants at the land-water interface and suggest research and management approaches for linked freshwater-terrestrial ecosystems. Specifically, we focus on movements of animals with complex life histories and the detrital inputs associated with animal and plant matter delivered to freshwaters...
Authors
Johanna M. Kraus, Jeff Wessner, David C Walters
Introduction: Ecological subsidies as a framework for understanding contaminant fate, exposure, and effects at the land-water interface
Ecologists have long recognized that ecological subsidies (the flow of organic matter, nutrients, and organisms between ecosystems) can strongly affect ecosystem processes and community structure in the recipient ecosystem. Animal movements, organic matter flows, and food web dynamics between linked aquatic and terrestrial systems can also influence contaminant fate, exposure, and...
Authors
David C Walters, Johanna M. Kraus, Marc A. Mills
Applying the ecology of aquatic–terrestrial linkages to freshwater and riparian management
Global stressors such as climate change, invasive species, urbanization, agricultural practices, and pollution can alter aquatic resource subsidies to terrestrial consumers. The effects of these stressors on timing, quality, and quantity of aquatic subsidies, such as adult aquatic insects, to birds, herpetofauna, and mammals, have large implications for wildlife management (Baxter et al...
Authors
Johanna M. Kraus
Contaminants in linked aquatic–terrestrial ecosystems: Predicting effects of aquatic pollution on adult aquatic insects and terrestrial insectivores
Organisms that move across ecosystem boundaries connect food webs in apparently disparate locations. As part of their life cycle, aquatic insects transition from aquatic larvae to terrestrial adults, thereby linking freshwater ecosystem processes and terrestrial insectivore dynamics. These linkages are strongly affected by contamination of freshwater ecosystems, which can reduce...
Authors
Johanna M. Kraus
Non-USGS Publications**
Wanty R.B., L.S. Balistrieri, J.S. Wesner, D.M. Walters, T.S. Schmidt, F. Podda, G. De Giudici, C.A. Stricker, J.M. Kraus, P. Lattanzi, R.E. Wolf, R. Cidu. 2015. Isotopic insights into biological regulation of zinc in contaminated systems. 11th Applied Isotope Geochemistry Conference, AIG-11 BRGM. Procedia Earth and Planetary Science 13: 60-63.
Vonesh, J.R., J.M. Kraus. 2009. Pesticide alters habitat selection and aquatic community composition. Oecologia 160: 379–385.
Vonesh, J.R., J.M. Kraus, S. Rosenberg, and J.M. Chase. 2009. Predator effects on aquatic community assembly: disentangling the roles of habitat selection and post-colonization processes. Oikos 118: 1219-1229.
Ahrens L., and J.M. Kraus. 2006. Wolf spider (Araneae: Lycosidae) movement along a pond-forest boundary. Journal of Arachnology 34: 532-539.
Kraus J.M., and D. H. Morse. 2005. Seasonal habitat shift in an intertidal wolf spider: proximal cues associated with migration and substrate preference. Journal of Arachnology 33:110–123.
Deyrup M., J.M. Kraus, and T. Eisner. 2004. A Florida caterpillar and other arthropods inhabiting the webs of a subsocial spider (Lepidoptera: Pyralidae; Araneida: Theridiidae). Florida Entomologist 87:554-558.
Church S.A.P., J.M. Kraus, J.C. Mitchell, D.R. Church, and D.R. Taylor. 2003. Evidence for multiple pleistocene refugia in the postglacial expansion of the eastern tiger salamander, Ambystoma tigrinum tigrinum. Evolution 57: 372–383.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 34
Metamorphosis and the impact of contaminants on ecological subsidies
Animals with complex life histories such as aquatic insects and amphibians link freshwater and terrestrial ecosystems when they transition from water to land during development. This transition requires metamorphosis from juvenile to adult life stages. Metamorphosis is a stressful and ecologically sensitive life history event. Exposure to contaminants during juvenile development (before...
Authors
Jeff S. Wesner, Johanna M. Kraus, Brianna L. Henry, Jacob L. Kerby
Cross-ecosystem linkages and trace metals at the land-water interface
At low concentrations, trace metals are critical for sustaining life on Earth. However, at high concentrations, they become a global contaminant with particularly strong effects on freshwater communities. These effects can propagate to terrestrial ecosystems in part by altering production and community structure of adult aquatic insect emergence and aquatic insect-mediated metal fluxes...
Authors
Johanna M. Kraus, Justin Pomeranz
Synthesis: A framework for predicting the dark side of ecological subsidies
In this chapter, we synthesize the state of the science regarding ecological subsidies and contaminants at the land-water interface and suggest research and management approaches for linked freshwater-terrestrial ecosystems. Specifically, we focus on movements of animals with complex life histories and the detrital inputs associated with animal and plant matter delivered to freshwaters...
Authors
Johanna M. Kraus, Jeff Wessner, David C Walters
Introduction: Ecological subsidies as a framework for understanding contaminant fate, exposure, and effects at the land-water interface
Ecologists have long recognized that ecological subsidies (the flow of organic matter, nutrients, and organisms between ecosystems) can strongly affect ecosystem processes and community structure in the recipient ecosystem. Animal movements, organic matter flows, and food web dynamics between linked aquatic and terrestrial systems can also influence contaminant fate, exposure, and...
Authors
David C Walters, Johanna M. Kraus, Marc A. Mills
Applying the ecology of aquatic–terrestrial linkages to freshwater and riparian management
Global stressors such as climate change, invasive species, urbanization, agricultural practices, and pollution can alter aquatic resource subsidies to terrestrial consumers. The effects of these stressors on timing, quality, and quantity of aquatic subsidies, such as adult aquatic insects, to birds, herpetofauna, and mammals, have large implications for wildlife management (Baxter et al...
Authors
Johanna M. Kraus
Contaminants in linked aquatic–terrestrial ecosystems: Predicting effects of aquatic pollution on adult aquatic insects and terrestrial insectivores
Organisms that move across ecosystem boundaries connect food webs in apparently disparate locations. As part of their life cycle, aquatic insects transition from aquatic larvae to terrestrial adults, thereby linking freshwater ecosystem processes and terrestrial insectivore dynamics. These linkages are strongly affected by contamination of freshwater ecosystems, which can reduce...
Authors
Johanna M. Kraus
Non-USGS Publications**
Wanty R.B., L.S. Balistrieri, J.S. Wesner, D.M. Walters, T.S. Schmidt, F. Podda, G. De Giudici, C.A. Stricker, J.M. Kraus, P. Lattanzi, R.E. Wolf, R. Cidu. 2015. Isotopic insights into biological regulation of zinc in contaminated systems. 11th Applied Isotope Geochemistry Conference, AIG-11 BRGM. Procedia Earth and Planetary Science 13: 60-63.
Vonesh, J.R., J.M. Kraus. 2009. Pesticide alters habitat selection and aquatic community composition. Oecologia 160: 379–385.
Vonesh, J.R., J.M. Kraus, S. Rosenberg, and J.M. Chase. 2009. Predator effects on aquatic community assembly: disentangling the roles of habitat selection and post-colonization processes. Oikos 118: 1219-1229.
Ahrens L., and J.M. Kraus. 2006. Wolf spider (Araneae: Lycosidae) movement along a pond-forest boundary. Journal of Arachnology 34: 532-539.
Kraus J.M., and D. H. Morse. 2005. Seasonal habitat shift in an intertidal wolf spider: proximal cues associated with migration and substrate preference. Journal of Arachnology 33:110–123.
Deyrup M., J.M. Kraus, and T. Eisner. 2004. A Florida caterpillar and other arthropods inhabiting the webs of a subsocial spider (Lepidoptera: Pyralidae; Araneida: Theridiidae). Florida Entomologist 87:554-558.
Church S.A.P., J.M. Kraus, J.C. Mitchell, D.R. Church, and D.R. Taylor. 2003. Evidence for multiple pleistocene refugia in the postglacial expansion of the eastern tiger salamander, Ambystoma tigrinum tigrinum. Evolution 57: 372–383.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.