Sue Phillips (Former Employee)
Science and Products
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: 32
Soil biota can change after exotic plant invasion: Does this affect ecosystem processes? Soil biota can change after exotic plant invasion: Does this affect ecosystem processes?
Invasion of the exotic annual grass Bromus tectorum into stands of the native perennial grass Hilaria jamesii significantly reduced the abundance of soil biota, especially microarthropods and nematodes. Effects of invasion on active and total bacterial and fungal biomass were variable, although populations generally increased after 50+ years of invasion. The invasion of Bromus also...
Authors
Jayne Belnap, Susan L. Phillips, S. K. Sherrod, A. Moldenke
Evidence for micronutrient limitation of biological soil crusts: Importance to arid-lands restoration Evidence for micronutrient limitation of biological soil crusts: Importance to arid-lands restoration
Desertification is a global problem, costly to national economies and human societies. Restoration of biological soil crusts (BSCs) may have an important role to play in the reversal of desertification due to their ability to decrease erosion and enhance soil fertility. To determine if there is evidence that lower fertility may hinder BSC recolonization, we investigated the hypothesis...
Authors
M. A. Bowker, J. Belnap, D. W. Davidson, S. L. Phillips
Response of desert biological soil crusts to alterations in precipitation frequency Response of desert biological soil crusts to alterations in precipitation frequency
Biological soil crusts, a community of cyanobacteria, lichens, and mosses that live on the soil surface, occur in deserts throughout the world. They are a critical component of desert ecosystems, as they are important contributors to soil fertility and stability. Future climate scenarios predict alteration of the timing and amount of precipitation in desert environments. Because...
Authors
J. Belnap, S. L. Phillips, M. E. Miller
Soil fertility in deserts: A review on the influence of biological soil crusts and the effect of soil surface disturbance on nutrient inputs and losses Soil fertility in deserts: A review on the influence of biological soil crusts and the effect of soil surface disturbance on nutrient inputs and losses
Sources of desert soil fertility include parent material weathering, aeolian deposition, and on-site C and N biotic fixation. While parent materials provide many soil nutrients, aeolian deposition can provide up to 75% of plant-essential nutrients including N, P, K, Mg, Na, Mn, Cu, and Fe. Soil surface biota are often sticky, and help retain wind-deposited nutrients, as well as providing...
Authors
Jayne Belnap, S. Phillips, M. Duniway, Richard L. Reynolds
Treatment effects on performance of N-fixing lichens in disturbed crusts of the Colorado Plateau Treatment effects on performance of N-fixing lichens in disturbed crusts of the Colorado Plateau
Biological soil crusts arrest soil erosion and supply nitrogen to arid ecosystems. To understand their recovery from disturbance, we studied performances of Collema spp. lichens relative to four experimental treatments plus microtopography of soil pedicels, oriented north-northwest to south-southeast in crusts. At sites in Needles (NDLS) and Island in the Sky (ISKY) districts of...
Authors
Diane W. Davidson, Mathew Bowker, Dylan George, Susan L. Phillips, Jayne Belnap
Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts
Summers on the Colorado Plateau (USA) are typified by harsh conditions such as high temperatures, brief soil hydration periods, and high UV and visible radiation. We investigated whether community composition, physiological status, and pigmentation might vary in biological soil crusts as a result of such conditions. Representative surface cores were sampled at the ENE, WSW, and top...
Authors
M. A. Bowker, S.C. Reed, J. Belnap, S. L. Phillips
Soil biota in an ungrazed grassland: Response to annual grass (Bromus tectorum) invasion Soil biota in an ungrazed grassland: Response to annual grass (Bromus tectorum) invasion
Bromus tectorum is an exotic annual grass that currently dominates many western U.S. semi-arid ecosystems, and the effects of this grass on ecosystems in general, and soil biota specifically, are unknown. Bromus recently invaded two ungrazed and unburned perennial bunchgrass communities in southeastern Utah. This study compared the soil food-web structure of the two native grassland...
Authors
Jayne Belnap, Susan L. Phillips
Biological soil crusts of Mongolia- Impacts of grazing and precipitation on nitrogen inputs Biological soil crusts of Mongolia- Impacts of grazing and precipitation on nitrogen inputs
No abstract available.
Authors
Jayne Belnap, D. Ojima, N.N. Barger
Non-USGS Publications**
Brooks, J.R., Buchmann, N., Phillips, S.L., Ehleringer, B., Evans, R.D., Lott, M., Martinelli, L.A., Pockman, W.T., Sandquist, D.R., Sparks, J.P., Sperry, L., Williams, D., Ehleringer, J.R., 2002, Heavy and light beer- A carbon isotope approach to detect C4 carbon in beers of different origins, styles, and prices: Journal of Agricultural and Food Chemistry, v. 50, p. 6413-6418.
Ehleringer, J.R., Phillips, S.L., 1996, Ecophysiological factors contributing to the distributions of several Quercusspecies in the Intermountain West: Annales des Sciences Forestieres, v. 53, p. 291-302.
Ehleringer JR, Sandquist DR, Phillips SL. 1997. Burning coal seams in southern Utah: a natural system for studies of plant responses to elevated CO2. In: A. Raschi, F. Migleietta, R. Tugnetti and P. van Gardingen (eds), Plant Responses to Elevated CO2: Evidence from Natural Springs. Cambridge Univ Press. pp 56-68.
Ehleringer JR, Phillips SL. 1996. Ecophysiological factors contributing to the distributions of several Quercus species in the Intermountain West. Ann For. Sci. 53:291-302.
Lin G, Phillips SL, Ehleringer JR. 1996. Monsoonal precipitation responses of shrubs in a cold desert community on the Colorado Plateau. Oecologia 106:8-17.
Phillips SL, Ehleringer JR. 1995. Limited uptake of summer precipitation by bigtooth maple (Acer grandidentatum Nutt.) and Gambel’s oak (Quercus gambelii Nutt.). Trees 9:214-219.
Schuster WSF, Sandquist DR, Phillips SL, Ehleringer JR. 1994. High levels of genetic variation in populations of four dominant aridland plant species in Arizona. J. of Arid Environ. 27:159-167.
Flanagan LB, Phillips SL, Ehleringer JR, Lloyd J, Farquhar GD. 1994. Effect of changes in leaf water oxygen isotopic changes on discrimination against C18O16O during photosynthetic gas exchange. Aust. J. Plant Phys. 21:221-234.
Sandquist DR, Schuster WSF, Donovan LA, Phillips SL, Ehleringer JR. 1993. Differences in carbon isotope discrimination between seedlings and adults of southwestern desert perennial plants. Southwestern Nat. 38(3):212-217.
Schuster WSF, Phillips SL, Sandquist DR, Ehleringer JR. 1992. Heritability of carbon isotope discrimination in Gutierrezia microcephala (Asteraceae). Amer. J. Bot. 79(2):216-221.
Schuster WSF, Sandquist DR, Phillips SL, Ehleringer JR. 1992. Comparisons of carbon isotope discrimination in populations of aridland plant species differing in lifespan. Oecologia 91:332-337.
Ehleringer JR, Phillips SL, Comstock JP. 1992. Seasonal variation in the carbon isotopic composition of desert plants. Functional Ecology 6:396-404.
Ehleringer JR, Phillips SL, Schuster WSF, Sandquist DR. 1991. Differential utilization of summer rains by desert plants. Oecologia 88(3): 430-434.
Phillips SL. 1996. Comparative water use patterns of Quercus gambelii and Acer grandidentatum in Red Butte Canyon, Utah. MS Thesis, University of Utah.
Pollak O, Phillips SL, Shaw K, Herger L. 1988. Procedures manual for plant community dynamics subproject. Long-Term Ecological Research Data Report 88/1, Institute of Arctic and Alpine Research, Boulder, CO.
Flanagan LB, Phillips SL, Ehleringer JR, Lloyd J, Farquhar GD. 1994. Effect of changes in leaf water oxygen isotopic changes on discrimination against C18O16O during photosynthetic gas exchange. Aust. J. Plant Phys. 21:221-234.
**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.
New Center Director at the Forest and Rangeland Ecosystem Science Center New Center Director at the Forest and Rangeland Ecosystem Science Center
CORVALLIS, Ore. — The U.S. Geological Survey has selected Sue Phillips as the new center director of the Forest and Rangeland Ecosystem Science Center. FRESC is headquartered in Corvallis, Oregon, with research offices in Corvallis; Boise, Idaho; Seattle, Washington; and Olympic National Park in Port Angeles, Washington.
Science and Products
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: 32
Soil biota can change after exotic plant invasion: Does this affect ecosystem processes? Soil biota can change after exotic plant invasion: Does this affect ecosystem processes?
Invasion of the exotic annual grass Bromus tectorum into stands of the native perennial grass Hilaria jamesii significantly reduced the abundance of soil biota, especially microarthropods and nematodes. Effects of invasion on active and total bacterial and fungal biomass were variable, although populations generally increased after 50+ years of invasion. The invasion of Bromus also...
Authors
Jayne Belnap, Susan L. Phillips, S. K. Sherrod, A. Moldenke
Evidence for micronutrient limitation of biological soil crusts: Importance to arid-lands restoration Evidence for micronutrient limitation of biological soil crusts: Importance to arid-lands restoration
Desertification is a global problem, costly to national economies and human societies. Restoration of biological soil crusts (BSCs) may have an important role to play in the reversal of desertification due to their ability to decrease erosion and enhance soil fertility. To determine if there is evidence that lower fertility may hinder BSC recolonization, we investigated the hypothesis...
Authors
M. A. Bowker, J. Belnap, D. W. Davidson, S. L. Phillips
Response of desert biological soil crusts to alterations in precipitation frequency Response of desert biological soil crusts to alterations in precipitation frequency
Biological soil crusts, a community of cyanobacteria, lichens, and mosses that live on the soil surface, occur in deserts throughout the world. They are a critical component of desert ecosystems, as they are important contributors to soil fertility and stability. Future climate scenarios predict alteration of the timing and amount of precipitation in desert environments. Because...
Authors
J. Belnap, S. L. Phillips, M. E. Miller
Soil fertility in deserts: A review on the influence of biological soil crusts and the effect of soil surface disturbance on nutrient inputs and losses Soil fertility in deserts: A review on the influence of biological soil crusts and the effect of soil surface disturbance on nutrient inputs and losses
Sources of desert soil fertility include parent material weathering, aeolian deposition, and on-site C and N biotic fixation. While parent materials provide many soil nutrients, aeolian deposition can provide up to 75% of plant-essential nutrients including N, P, K, Mg, Na, Mn, Cu, and Fe. Soil surface biota are often sticky, and help retain wind-deposited nutrients, as well as providing...
Authors
Jayne Belnap, S. Phillips, M. Duniway, Richard L. Reynolds
Treatment effects on performance of N-fixing lichens in disturbed crusts of the Colorado Plateau Treatment effects on performance of N-fixing lichens in disturbed crusts of the Colorado Plateau
Biological soil crusts arrest soil erosion and supply nitrogen to arid ecosystems. To understand their recovery from disturbance, we studied performances of Collema spp. lichens relative to four experimental treatments plus microtopography of soil pedicels, oriented north-northwest to south-southeast in crusts. At sites in Needles (NDLS) and Island in the Sky (ISKY) districts of...
Authors
Diane W. Davidson, Mathew Bowker, Dylan George, Susan L. Phillips, Jayne Belnap
Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts Temporal variation in community composition, pigmentation, and Fv/Fm of desert cyanobacterial soil crusts
Summers on the Colorado Plateau (USA) are typified by harsh conditions such as high temperatures, brief soil hydration periods, and high UV and visible radiation. We investigated whether community composition, physiological status, and pigmentation might vary in biological soil crusts as a result of such conditions. Representative surface cores were sampled at the ENE, WSW, and top...
Authors
M. A. Bowker, S.C. Reed, J. Belnap, S. L. Phillips
Soil biota in an ungrazed grassland: Response to annual grass (Bromus tectorum) invasion Soil biota in an ungrazed grassland: Response to annual grass (Bromus tectorum) invasion
Bromus tectorum is an exotic annual grass that currently dominates many western U.S. semi-arid ecosystems, and the effects of this grass on ecosystems in general, and soil biota specifically, are unknown. Bromus recently invaded two ungrazed and unburned perennial bunchgrass communities in southeastern Utah. This study compared the soil food-web structure of the two native grassland...
Authors
Jayne Belnap, Susan L. Phillips
Biological soil crusts of Mongolia- Impacts of grazing and precipitation on nitrogen inputs Biological soil crusts of Mongolia- Impacts of grazing and precipitation on nitrogen inputs
No abstract available.
Authors
Jayne Belnap, D. Ojima, N.N. Barger
Non-USGS Publications**
Brooks, J.R., Buchmann, N., Phillips, S.L., Ehleringer, B., Evans, R.D., Lott, M., Martinelli, L.A., Pockman, W.T., Sandquist, D.R., Sparks, J.P., Sperry, L., Williams, D., Ehleringer, J.R., 2002, Heavy and light beer- A carbon isotope approach to detect C4 carbon in beers of different origins, styles, and prices: Journal of Agricultural and Food Chemistry, v. 50, p. 6413-6418.
Ehleringer, J.R., Phillips, S.L., 1996, Ecophysiological factors contributing to the distributions of several Quercusspecies in the Intermountain West: Annales des Sciences Forestieres, v. 53, p. 291-302.
Ehleringer JR, Sandquist DR, Phillips SL. 1997. Burning coal seams in southern Utah: a natural system for studies of plant responses to elevated CO2. In: A. Raschi, F. Migleietta, R. Tugnetti and P. van Gardingen (eds), Plant Responses to Elevated CO2: Evidence from Natural Springs. Cambridge Univ Press. pp 56-68.
Ehleringer JR, Phillips SL. 1996. Ecophysiological factors contributing to the distributions of several Quercus species in the Intermountain West. Ann For. Sci. 53:291-302.
Lin G, Phillips SL, Ehleringer JR. 1996. Monsoonal precipitation responses of shrubs in a cold desert community on the Colorado Plateau. Oecologia 106:8-17.
Phillips SL, Ehleringer JR. 1995. Limited uptake of summer precipitation by bigtooth maple (Acer grandidentatum Nutt.) and Gambel’s oak (Quercus gambelii Nutt.). Trees 9:214-219.
Schuster WSF, Sandquist DR, Phillips SL, Ehleringer JR. 1994. High levels of genetic variation in populations of four dominant aridland plant species in Arizona. J. of Arid Environ. 27:159-167.
Flanagan LB, Phillips SL, Ehleringer JR, Lloyd J, Farquhar GD. 1994. Effect of changes in leaf water oxygen isotopic changes on discrimination against C18O16O during photosynthetic gas exchange. Aust. J. Plant Phys. 21:221-234.
Sandquist DR, Schuster WSF, Donovan LA, Phillips SL, Ehleringer JR. 1993. Differences in carbon isotope discrimination between seedlings and adults of southwestern desert perennial plants. Southwestern Nat. 38(3):212-217.
Schuster WSF, Phillips SL, Sandquist DR, Ehleringer JR. 1992. Heritability of carbon isotope discrimination in Gutierrezia microcephala (Asteraceae). Amer. J. Bot. 79(2):216-221.
Schuster WSF, Sandquist DR, Phillips SL, Ehleringer JR. 1992. Comparisons of carbon isotope discrimination in populations of aridland plant species differing in lifespan. Oecologia 91:332-337.
Ehleringer JR, Phillips SL, Comstock JP. 1992. Seasonal variation in the carbon isotopic composition of desert plants. Functional Ecology 6:396-404.
Ehleringer JR, Phillips SL, Schuster WSF, Sandquist DR. 1991. Differential utilization of summer rains by desert plants. Oecologia 88(3): 430-434.
Phillips SL. 1996. Comparative water use patterns of Quercus gambelii and Acer grandidentatum in Red Butte Canyon, Utah. MS Thesis, University of Utah.
Pollak O, Phillips SL, Shaw K, Herger L. 1988. Procedures manual for plant community dynamics subproject. Long-Term Ecological Research Data Report 88/1, Institute of Arctic and Alpine Research, Boulder, CO.
Flanagan LB, Phillips SL, Ehleringer JR, Lloyd J, Farquhar GD. 1994. Effect of changes in leaf water oxygen isotopic changes on discrimination against C18O16O during photosynthetic gas exchange. Aust. J. Plant Phys. 21:221-234.
**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.
New Center Director at the Forest and Rangeland Ecosystem Science Center New Center Director at the Forest and Rangeland Ecosystem Science Center
CORVALLIS, Ore. — The U.S. Geological Survey has selected Sue Phillips as the new center director of the Forest and Rangeland Ecosystem Science Center. FRESC is headquartered in Corvallis, Oregon, with research offices in Corvallis; Boise, Idaho; Seattle, Washington; and Olympic National Park in Port Angeles, Washington.