Search Results - "Somers, Greg L."

Visible foliar injury caused by ozone alters the relationship between SPAD meter readings and chlorophyll concentrations in cutleaf coneflower by Neufeld, Howard S, Chappelka, Arthur H, Somers, Greg L, Burkey, Kent O, Davison, Alan W, Finkelstein, Peter L

“…The ability of the SPAD-502 chlorophyll meter to quantify chlorophyll amounts in ozone-affected leaves of cutleaf coneflower (Rudbeckia laciniata var…”
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Cutleaf coneflower ( Rudbeckia laciniata L.) response to ozone and ethylenediurea (EDU) by Szantoi, Zoltan, Chappelka, Arthur H., Muntifering, Russell B., Somers, Greg L.

“…Cutleaf coneflower ( Rudbeckia laciniata L.) seedlings were placed into open-top chambers in May, 2004 and fumigated for 12 wks. Nine chambers were fumigated…”
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Use of ethylenediurea (EDU) to ameliorate ozone effects on purple coneflower ( Echinacea purpurea) by Szantoi, Zoltan, Chappelka, Arthur H., Muntifering, Russell B., Somers, Greg L.

“…Purple coneflower plants ( Echinacea purpurea) were placed into open-top chambers (OTCs) for 6 and 12 weeks in 2003 and 2004, respectively, and exposed to…”
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Developing a land-cover classification to select indicators of forest ecosystem health in a rapidly urbanizing landscape by Styers, Diane M., Chappelka, Arthur H., Marzen, Luke J., Somers, Greg L.

“…As moderate-sized cities become more urbanized, ecosystems are altered by land-use change. Key ecological services, such as clean air and water, drought and…”
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Urbanization effects on soil nitrogen transformations and microbial biomass in the subtropics by Enloe, Heather A, Lockaby, B. Graeme, Zipperer, Wayne C, Somers, Greg L

“…As urbanization can involve multiple alterations to the soil environment, it is uncertain how urbanization effects soil nitrogen cycling. We established…”
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Urbanization effects on leaf litter decomposition, foliar nutrient dynamics and aboveground net primary productivity in the subtropics by Enloe, Heather A, Lockaby, B. Graeme, Zipperer, Wayne C, Somers, Greg L

“…Urbanization can alter nutrient cycling. This research evaluated how urbanization affected nutrient dynamics in the subtropics. We established 17–0.04 ha plots…”
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Susceptibility of longleaf pine roots to infection and damage by four root-inhabiting ophiostomatoid fungi by Matusick, George, Eckhardt, Lori G., Somers, Greg L.

“…▶ Ophiostomatoid fungi infected pine roots and induced larger lesions than controls. ▶ Grosmannia huntii caused larger lesions than those caused by all other…”
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Influence of aboveground tree biomass, home age, and yard maintenance on soil carbon levels in residential yards by Huyler, Ann, Chappelka, Arthur H, Prior, Stephen A, Somers, Greg L

“…With the rapid urbanization of natural lands, researchers have begun to examine the capacity of urban soils to store carbon (C), with recent attention to…”
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Drivers of soil carbon in residential ‘pure lawns’ in Auburn, Alabama by Huyler, Ann, Chappelka, Arthur H, Prior, Stephen A, Somers, Greg L

“…Urban land area is expanding worldwide and may contribute to long-term carbon (C) storage; however, little is known about potential drivers of soil C in urban…”
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Ambient ozone effects on gas exchange and total non-structural carbohydrate levels in cutleaf coneflower ( Rudbeckia laciniata L.) growing in Great Smoky Mountains National Park by Neufeld, Howard S., Peoples, Seth J., Davison, Alan W., Chappelka, Arthur H., Somers, Greg L., Thomley, Jill E., Booker, Fitzgerald L.

“…Ozone-sensitive and -tolerant individuals of cutleaf coneflower ( Rudbeckia laciniata L.) were compared for their gas exchange characteristics and total…”
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Relationship between foliar δ13C and hydraulic pathway length in Pinus palustris by SAMUELSON, Lisa J, MCLEMORE, Price C, SOMERS, Greg L

“…Abstract Because of the importance of hydraulic architecture in understanding physiological differences between small and large trees, we tested the hypothesis…”
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Effects of microtopography and disturbance on fine-root dynamics in wetland forests of low-order stream floodplains by Jones, R.H, Lockaby, B.G, Somers, G.L

“…Fine-root mass and net primary productivity (NPP) were assessed in two forested wetlands located in floodplains of low-order streams in southern Alabama. In…”
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Determination of Crew Size Efficiency Relative to Urban Tree Inventories by Chappelka, Arthur, Loewenstein, Edward, Somers, Greg, Keever, Gary, Martin, Nicholas

“…Trees on the campus of Auburn University (Auburn, Alabama, U.S.) were used to test the efficiency of different crew sizes in conducting a 100% tree inventory…”
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Scale matters: Indicators of ecological health along the urban–rural interface near Columbus, Georgia by Styers, Diane M., Chappelka, Arthur H., Marzen, Luke J., Somers, Greg L.

“…Ecological data obtained from field plots can provide detailed information about ecosystem structure and function. However, this information typically reflects…”
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Relationship between foliar [delta]^sup 13^C and hydraulic pathway length in Pinus palustris by Samuelson, Lisa J, Price C McLemore III, Somers, Greg L

“…Because of the importance of hydraulic architecture in understanding physiological differences between small and large trees, we tested the hypothesis that…”
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Effects of microtopography and disturbance on fine-root dynamics in wetland forests of lower-order stream floodplains by Jones, Robert H, Lockaby, B. Graeme, Somers, Greg L

“…Fine-root mass and net primary productivity (NPP) were assessed in two forested wetlands located in floodplains of low-order streams in southern Alabama. In…”
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Spatial, seasonal, and annual variation of fine root mass in a forested wetland by Jones, R.H, Henson, K.O, Somers, G.L

“…Fine root standing crop was estimated for different microtopographic positions within a forested wetland in Alabama. Sequential soil cores (to a 20 cm depth)…”
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A stochastic frontier model for fitting tree crown shape in loblolly pine (Pinus taeda L.) by Nepal, S.K. (Alabama AandM University, Normal, AL.), Somers, G.L, Caudill, S.B

“…This article proposes stochastic frontier estimation as a method to fit either maximum or minimum relationships. This procedure represents an improvement over…”
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