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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

Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies

Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers in order to synthesize information about total ecosystem N...
Authors
P.H. Templer, M.C. Mack, F. S. Chapin, L.M. Christenson, J.E. Compton, H.D. Crook, W.S. Currie, C.J. Curtis, D.B. Dail, C. M. D’Antonio, B.A. Emmett, H.E. Epstein, C.L. Goodale, P. Gundersen, S.E. Hobbie, K. Holland, D.U. Hooper, B.A. Hungate, S. Lamontagne, K.J. Nadelhoffer, C.W. Osenberg, S.S. Perakis, P. Schleppi, J. Schimel, I.K. Schmidt, M. Sommerkorn, J. Spoelstra, A. Tietema, W.W. Wessel, D.R. Zak
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter

High tissue nitrogen (N) accelerates decomposition of high-quality leaf litter in the early phases of mass loss, but the influence of initial tissue N variation on the decomposition of lignin-rich litter is less resolved. Because environmental changes such as atmospheric N deposition and elevated CO2 can alter tissue N levels within species more rapidly than they alter the species...
Authors
Steven S. Perakis, Joselin J. Matkins, David E. Hibbs
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Amplification and dampening of soil respiration by changes in temperature variability Amplification and dampening of soil respiration by changes in temperature variability

Accelerated release of carbon from soils is one of the most important feed backs related to anthropogenically induced climate change. Studies addressing the mechanisms for soil carbon release through organic matter decomposition have focused on the effect of changes in the average temperature, with little attention to changes in temperature vari-ability. Anthropogenic activities are...
Authors
C.A. Sierra, M. E. Harmon, E. Thomann, S.S. Perakis, H.W. Loescher
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Complementary models of tree species-soil relationships in old-growth temperate forests Complementary models of tree species-soil relationships in old-growth temperate forests

Ecosystem-level studies identify plant–soil feedbacks as important controls on soil nutrient availability, particularly for nitrogen and phosphorus. Although site- and species-specific studies of tree species–soil relationships are relatively common, comparatively fewer studies consider multiple co-existing species in old-growth forests across a range of sites that vary in underlying...
Authors
Alison Cross, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Marine West Coast forests Marine West Coast forests

No abstract available.
Authors
Steven S. Perakis, Linda H. Geiser, Erik A. Lilleskov
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

δ15N constraints on long-term nitrogen balances in temperate forests δ15N constraints on long-term nitrogen balances in temperate forests

Biogeochemical theory emphasizes nitrogen (N) limitation and the many factors that can restrict N accumulation in temperate forests, yet lacks a working model of conditions that can promote naturally high N accumulation. We used a dynamic simulation model of ecosystem N and δ15N to evaluate which combination of N input and loss pathways could produce a range of high ecosystem N contents
Authors
S.S. Perakis, E.R. Sinkhorn, J.E. Compton
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

Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies Sinks for nitrogen inputs in terrestrial ecosystems: a meta-analysis of 15N tracer field studies

Effects of anthropogenic nitrogen (N) deposition and the ability of terrestrial ecosystems to store carbon (C) depend in part on the amount of N retained in the system and its partitioning among plant and soil pools. We conducted a meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers in order to synthesize information about total ecosystem N...
Authors
P.H. Templer, M.C. Mack, F. S. Chapin, L.M. Christenson, J.E. Compton, H.D. Crook, W.S. Currie, C.J. Curtis, D.B. Dail, C. M. D’Antonio, B.A. Emmett, H.E. Epstein, C.L. Goodale, P. Gundersen, S.E. Hobbie, K. Holland, D.U. Hooper, B.A. Hungate, S. Lamontagne, K.J. Nadelhoffer, C.W. Osenberg, S.S. Perakis, P. Schleppi, J. Schimel, I.K. Schmidt, M. Sommerkorn, J. Spoelstra, A. Tietema, W.W. Wessel, D.R. Zak
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter Interactions of tissue and fertilizer nitrogen on decomposition dynamics of lignin-rich conifer litter

High tissue nitrogen (N) accelerates decomposition of high-quality leaf litter in the early phases of mass loss, but the influence of initial tissue N variation on the decomposition of lignin-rich litter is less resolved. Because environmental changes such as atmospheric N deposition and elevated CO2 can alter tissue N levels within species more rapidly than they alter the species...
Authors
Steven S. Perakis, Joselin J. Matkins, David E. Hibbs
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Amplification and dampening of soil respiration by changes in temperature variability Amplification and dampening of soil respiration by changes in temperature variability

Accelerated release of carbon from soils is one of the most important feed backs related to anthropogenically induced climate change. Studies addressing the mechanisms for soil carbon release through organic matter decomposition have focused on the effect of changes in the average temperature, with little attention to changes in temperature vari-ability. Anthropogenic activities are...
Authors
C.A. Sierra, M. E. Harmon, E. Thomann, S.S. Perakis, H.W. Loescher
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Complementary models of tree species-soil relationships in old-growth temperate forests Complementary models of tree species-soil relationships in old-growth temperate forests

Ecosystem-level studies identify plant–soil feedbacks as important controls on soil nutrient availability, particularly for nitrogen and phosphorus. Although site- and species-specific studies of tree species–soil relationships are relatively common, comparatively fewer studies consider multiple co-existing species in old-growth forests across a range of sites that vary in underlying...
Authors
Alison Cross, Steven S. Perakis
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

Marine West Coast forests Marine West Coast forests

No abstract available.
Authors
Steven S. Perakis, Linda H. Geiser, Erik A. Lilleskov
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

δ15N constraints on long-term nitrogen balances in temperate forests δ15N constraints on long-term nitrogen balances in temperate forests

Biogeochemical theory emphasizes nitrogen (N) limitation and the many factors that can restrict N accumulation in temperate forests, yet lacks a working model of conditions that can promote naturally high N accumulation. We used a dynamic simulation model of ecosystem N and δ15N to evaluate which combination of N input and loss pathways could produce a range of high ecosystem N contents
Authors
S.S. Perakis, E.R. Sinkhorn, J.E. Compton
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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