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Steven S Perakis

I am a Supervisory Research Ecologist at the Forest and Rangeland Ecosystem Science Center in Corvallis, OR

I am interested in forest biogeochemistry and ecosystem studies, watershed science, riparian forests, nutrient cycling, forest soil fertility and stable isotopes.

 

Professional Experience

  • 2001-present: Supervisory Research Ecologist, USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR

  • 2001: Post Doctoral Position, Stanford University, Stanford, CA

Education and Certifications

  • Ph.D., Cornell University, Ithaca, NY (2000)

  • M.S., University of Washington, Seattle, WA (1994)

  • B.S., University of Pennsylvania, Philadelphia, PA (1990)

Science and Products

Views from Siuslaw National Forest

Terrestrial Ecosystems Laboratory (FRESC)

Research in our laboratory centers on the ecology and biogeochemistry of forest ecosystems, as well as grassland and riparian systems. We examine how factors such as natural and human disturbances, climate, succession, and soil fertility shape ecosystem biogeochemistry - and the reciprocal effect of biogeochemical cycles on these and other factors.
By
Ecosystems Mission Area, Land Management Research Program, Forest and Rangeland Ecosystem Science Center
Terrestrial Ecosystems Laboratory (FRESC)

Terrestrial Ecosystems Laboratory (FRESC)

Research in our laboratory centers on the ecology and biogeochemistry of forest ecosystems, as well as grassland and riparian systems. We examine how factors such as natural and human disturbances, climate, succession, and soil fertility shape ecosystem biogeochemistry - and the reciprocal effect of biogeochemical cycles on these and other factors.
Learn More

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

No Result Found

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

No results found.

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

Filter Total Items: 80

Soil organic matter regulates molybdenum storage and mobility in forests Soil organic matter regulates molybdenum storage and mobility in forests

The trace element molybdenum (Mo) is essential to a suite of nitrogen (N) cycling processes in ecosystems, but there is limited information on its distribution within soils and relationship to plant and bedrock pools. We examined soil, bedrock, and plant Mo variation across 24 forests spanning wide soil pH gradients on both basaltic and sedimentary lithologies in the Oregon Coast Range...
Authors
Jade A Marks, Steven S. Perakis, Elizabeth K. King, Julie Pett-Ridge
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Disturbance and topography shape nitrogen availability and δ15 N over long-term forest succession Disturbance and topography shape nitrogen availability and δ15 N over long-term forest succession

Forest disturbance and long-term succession towards old-growth are thought to increase nitrogen (N) availability and N loss, which should increase soil δ15N values. We examined soil and foliar patterns in N and δ15N, and soil N mineralization, across 800 years of forest succession in a topographically complex montane landscape influenced by human logging and wildfire. In contrast to...
Authors
Steven S. Perakis, Alan J. Tepley, Jana Compton
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Effects and empirical critical loads of Nitrogen for ecoregions of the United States Effects and empirical critical loads of Nitrogen for ecoregions of the United States

Human activity in the last century has increased nitrogen (N) deposition to a level that has caused or is likely to cause alterations to the structure and function of many ecosystems across the United States. We synthesized current research relating atmospheric N deposition to effects on terrestrial and freshwater ecosystems in the United States, and estimated associated empirical...
Authors
Linda H. Pardo, Molly J. Robin-Abbott, Mark E. Fenn, Christine L. Goodale, Linda H. Geiser, Charles T. Driscoll, Edith B. Allen, Jill Baron, Roland Bobbink, William D. Bowman, C M Clark, B. Emmett, Frank S Gilliam, Tara L. Greaver, Sharon J Hall, Erik A. Lilleskov, Lingli Liu, Jason A. Lynch, Knute J Nadelhoffer, Steven S. Perakis, John L Stoddard, Kathleen C. Weathers, Robin L. Dennis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Convergence of soil nitrogen isotopes across global climate gradients Convergence of soil nitrogen isotopes across global climate gradients

Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems, and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the 15 N: 14 N ratio of soil organic matter across climate gradients provide key insights into...
Authors
Joseph M. Craine, Andrew J. Elmore, Lixin Wang, Laurent Augusto, W. Troy Baisden, E. N. J. Brookshire, Michael D. Cramer, Niles J. Hasselquist, Erik A. Hobbie, Ansgar Kahmen, Keisuke Koba, J. Marty Kranabetter, Michelle C. Mack, Erika Marin-Spiotta, Jordan R. Mayor, Kendra K. McLauchlan, Anders Michelsen, Gabriela B. Nardoto, Rafael S. Oliveira, Steven S. Perakis, Pablo L. Peri, Carlos A. Quesada, Andreas Richter, Louis A. Schipper, Bryan A. Stevenson, Benjamin L. Turner, Ricardo A. G. Viani, Wolfgang Wanek, Bernd Zeller
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Calcium oxalate contribution to calcium cycling in forests of contrasting nutrient status Calcium oxalate contribution to calcium cycling in forests of contrasting nutrient status

Calcium oxalate (Ca oxalate) is an insoluble biomineral that forms in plants and fungi, and occurs in soils across many types of ecosystems. Assessing how Ca oxalate may shape ecosystem Ca cycling requires information on the distribution of Ca oxalate among plant biomass, detritus, and mineral soil, and how it varies with ecosystem Ca status. We compared two Douglas-fir forests of...
Authors
Jenny M. Dauer, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Three-year growth response of young Douglas-fir to nitrogen, calcium, phosphorus, and blended fertilizers in Oregon and Washington Three-year growth response of young Douglas-fir to nitrogen, calcium, phosphorus, and blended fertilizers in Oregon and Washington

Studies of nutrient limitation in Douglas-fir forests of the Pacific Northwest focus predominantly on nitrogen, yet many stands demonstrate negligible or even negative growth response to nitrogen fertilization. To understand what nutrients other than nitrogen may limit forest productivity in this region, we tested six fertilizer treatments for their ability to increase stem volume growth...
Authors
Douglas B. Mainwaring, Douglas A. Maguire, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Non-USGS Publications**

Perakis, S.S., Hedin, L.O., 2002, Response to commentary on "Nitrogen loss from unpolluted South American forests mainly via dissolved organic compounds": Nature, v. 418, p. 665-665.
Perakis, S.S., Welch, E.B., Jacoby, J.M., 1996, Sediment-to-water blue-green algal recruitment in response to alum and environmental factors: Hydrobiologia, v. 318, no. 3, p. 165-177.

**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.

To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.

Filter Total Items: 14

Science and Products

Views from Siuslaw National Forest

Terrestrial Ecosystems Laboratory (FRESC)

Research in our laboratory centers on the ecology and biogeochemistry of forest ecosystems, as well as grassland and riparian systems. We examine how factors such as natural and human disturbances, climate, succession, and soil fertility shape ecosystem biogeochemistry - and the reciprocal effect of biogeochemical cycles on these and other factors.
By
Ecosystems Mission Area, Land Management Research Program, Forest and Rangeland Ecosystem Science Center
Terrestrial Ecosystems Laboratory (FRESC)

Terrestrial Ecosystems Laboratory (FRESC)

Research in our laboratory centers on the ecology and biogeochemistry of forest ecosystems, as well as grassland and riparian systems. We examine how factors such as natural and human disturbances, climate, succession, and soil fertility shape ecosystem biogeochemistry - and the reciprocal effect of biogeochemical cycles on these and other factors.
Learn More

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

No Result Found

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

No results found.

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

Filter Total Items: 80

Soil organic matter regulates molybdenum storage and mobility in forests Soil organic matter regulates molybdenum storage and mobility in forests

The trace element molybdenum (Mo) is essential to a suite of nitrogen (N) cycling processes in ecosystems, but there is limited information on its distribution within soils and relationship to plant and bedrock pools. We examined soil, bedrock, and plant Mo variation across 24 forests spanning wide soil pH gradients on both basaltic and sedimentary lithologies in the Oregon Coast Range...
Authors
Jade A Marks, Steven S. Perakis, Elizabeth K. King, Julie Pett-Ridge
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Disturbance and topography shape nitrogen availability and δ15 N over long-term forest succession Disturbance and topography shape nitrogen availability and δ15 N over long-term forest succession

Forest disturbance and long-term succession towards old-growth are thought to increase nitrogen (N) availability and N loss, which should increase soil δ15N values. We examined soil and foliar patterns in N and δ15N, and soil N mineralization, across 800 years of forest succession in a topographically complex montane landscape influenced by human logging and wildfire. In contrast to...
Authors
Steven S. Perakis, Alan J. Tepley, Jana Compton
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Effects and empirical critical loads of Nitrogen for ecoregions of the United States Effects and empirical critical loads of Nitrogen for ecoregions of the United States

Human activity in the last century has increased nitrogen (N) deposition to a level that has caused or is likely to cause alterations to the structure and function of many ecosystems across the United States. We synthesized current research relating atmospheric N deposition to effects on terrestrial and freshwater ecosystems in the United States, and estimated associated empirical...
Authors
Linda H. Pardo, Molly J. Robin-Abbott, Mark E. Fenn, Christine L. Goodale, Linda H. Geiser, Charles T. Driscoll, Edith B. Allen, Jill Baron, Roland Bobbink, William D. Bowman, C M Clark, B. Emmett, Frank S Gilliam, Tara L. Greaver, Sharon J Hall, Erik A. Lilleskov, Lingli Liu, Jason A. Lynch, Knute J Nadelhoffer, Steven S. Perakis, John L Stoddard, Kathleen C. Weathers, Robin L. Dennis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Convergence of soil nitrogen isotopes across global climate gradients Convergence of soil nitrogen isotopes across global climate gradients

Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems, and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the 15 N: 14 N ratio of soil organic matter across climate gradients provide key insights into...
Authors
Joseph M. Craine, Andrew J. Elmore, Lixin Wang, Laurent Augusto, W. Troy Baisden, E. N. J. Brookshire, Michael D. Cramer, Niles J. Hasselquist, Erik A. Hobbie, Ansgar Kahmen, Keisuke Koba, J. Marty Kranabetter, Michelle C. Mack, Erika Marin-Spiotta, Jordan R. Mayor, Kendra K. McLauchlan, Anders Michelsen, Gabriela B. Nardoto, Rafael S. Oliveira, Steven S. Perakis, Pablo L. Peri, Carlos A. Quesada, Andreas Richter, Louis A. Schipper, Bryan A. Stevenson, Benjamin L. Turner, Ricardo A. G. Viani, Wolfgang Wanek, Bernd Zeller
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Calcium oxalate contribution to calcium cycling in forests of contrasting nutrient status Calcium oxalate contribution to calcium cycling in forests of contrasting nutrient status

Calcium oxalate (Ca oxalate) is an insoluble biomineral that forms in plants and fungi, and occurs in soils across many types of ecosystems. Assessing how Ca oxalate may shape ecosystem Ca cycling requires information on the distribution of Ca oxalate among plant biomass, detritus, and mineral soil, and how it varies with ecosystem Ca status. We compared two Douglas-fir forests of...
Authors
Jenny M. Dauer, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Three-year growth response of young Douglas-fir to nitrogen, calcium, phosphorus, and blended fertilizers in Oregon and Washington Three-year growth response of young Douglas-fir to nitrogen, calcium, phosphorus, and blended fertilizers in Oregon and Washington

Studies of nutrient limitation in Douglas-fir forests of the Pacific Northwest focus predominantly on nitrogen, yet many stands demonstrate negligible or even negative growth response to nitrogen fertilization. To understand what nutrients other than nitrogen may limit forest productivity in this region, we tested six fertilizer treatments for their ability to increase stem volume growth...
Authors
Douglas B. Mainwaring, Douglas A. Maguire, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Non-USGS Publications**

Perakis, S.S., Hedin, L.O., 2002, Response to commentary on "Nitrogen loss from unpolluted South American forests mainly via dissolved organic compounds": Nature, v. 418, p. 665-665.
Perakis, S.S., Welch, E.B., Jacoby, J.M., 1996, Sediment-to-water blue-green algal recruitment in response to alum and environmental factors: Hydrobiologia, v. 318, no. 3, p. 165-177.

**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.

To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.

Filter Total Items: 14
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