Seasonal bioavailability of sediment-associated heavy metals along the Mississippi river floodplain von Grabowski, Lawra A., Houpis, James L.J., Woods, William I., Johnson, Kevin A.

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Chloroplastic responses of ponderosa pine ( Pinus ponderosa) seedlings to ozone exposure von Anderson, Paul D., Palmer, Brent, Houpis, James L.J., Smith, Mary K., Pushnik, James C.

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The Effect of Elevated Carbon Dioxide on a Sierra-Nevadan Dominant Species: Pinus ponderosa von Pushnik, James C., Demaree, Richard S., James L. J. Houpis, Flory, William B., Bauer, Scott M., Anderson, Paul D.

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Chloroplastic responses of ponderosa pine (Pinus ponderosa) seedlings to ozone exposure: Future directions in air quality research ecological, atmospheric, regulatory/policy/econom... von ANDERSON, Paul D, PALMER, Brent, HOUPIS, James L. J, SMITH, Mary K, PUSHNIK, James C

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Among-provenance variability of gas exchange and growth in response to long-term elevated CO2 exposure von Houpis, J.L.J, Anderson, P.D, Pushnik, J.C, Anschel, D.J

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Seasonal variation of gas exchange and pigmentation in branches of three grafted clones of mature ponderosa pine exposed to ozone and acid rain von Anderson, Paul D., Houpis, James L.J., Helms, John A., Momen, Bahram

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Relationship of antioxidant enzymes to ozone tolerance in branches of mature ponderosa pine (Pinus ponderosa) trees exposed to long-term, low concentration, ozone fumigation and ac... von Benes, Sharon E., Murphy, Terence M., Anderson, Paul D., Houpis, James L. J.

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AMONG-AND WITHIN-PROVENANCE VARIABILITY OF PINUS PONDEROSA (PINACEAE) SEEDLING RESPONSE TO LONG-TERM ELEVATED CO₂ EXPOSURE von Anderson, Paul D., Houpis, James L. J., Anschel, David J., Pushnik, James C.

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Among-Provenance Variability of Gas Exchange and Growth in Response to Long-Term Elevated CO sub(2) Exposure von Houpis, James LJ, Anderson, Paul D, Pushnik, James C, Anschel, David J

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Relationship of antioxidant enzymes to ozone tolerance in branches of mature ponderosa pine (Pinus ponderosa) trees exposed to long-term, low concentration, ozone fumigation and ac... von BENES, S. E, MURPHY, T. M, ANDERSON, P. D, HOUPIS, J. L. J

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Structural conditions of mesophyll cells of Pinus ponderosa var. scopulorum after SO 2 fumigation von Kärenlampi, Lauri, Houpis, James L. J.

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Structural conditions of mesophyll cells of Pinusponderosa var. scopulorum after SO2 fumigation von Kärenlampi, Lauri, Houpis, James L. J

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