Search Results - "NOWAK, ROBERT S."

Functional responses of plants to elevated atmospheric CO2--do photosynthetic and productivity data from FACE experiments support early predictions? by Nowak, Robert S., Ellsworth, David S., Smith, Stanley D.

“…Results from 16 free-air CO2 enrichment (FACE) sites representing four different global vegetation types indicate that only some early predictions of the…”
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Soil conditioning and plant—soil feedbacks affect competitive relationships between native and invasive grasses by Perkins, Lora B., Nowak, Robert S.

“…Understanding how competition from invasive species and soil conditions individually and interactively affect native performance will increase knowledge of…”
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Effect of sand-stabilizing shrubs on soil respiration in a temperate desert by Zhang, Zhi-Shan, Li, Xin-Rong, Nowak, Robert S., Wu, Pan, Gao, Yan-Hong, Zhao, Yang, Huang, Lei, Hu, Yi-Gang, Jia, Rong-Liang

“…Aims Explore how soil CO₂ efflux and its components change after moving sand dunes are stabilized with shrubs, and how abiotic factors affect those components…”
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Vegetation dynamics during last 35,000 years at a cold desert locale: preferential loss of forbs with increased aridity by Nowak, Robert S., Nowak, Cheryl L., Tausch, Robin J.

“…Paleoecological records are an important source of data to better understand ecological responses to climate. To help understand vegetation–climate…”
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Temporal dynamics of fine roots under long-term exposure to elevated CO2 in the Mojave Desert by Sonderegger, Derek L., Ogle, Kiona, Evans, R. Dave, Ferguson, Scot, Nowak, Robert S.

“…Deserts are considered 'below-ground dominated', yet little is known about the impact of rising CO2 in combination with natural weather cycles on long-term…”
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Elevated CO2 increases productivity and invasive species success in an arid ecosystem by SMITH, Stanley D, HUXMAN, Travis E, ZITZER, Stephen F, CHARLET, Therese N, HOUSMAN, David C, COLEMAN, James S, FENSTERMAKER, Lynn K, SEEMANN, Jeffrey R, NOWAK, Robert S

“…Arid ecosystems, which occupy about 20% of the earth's terrestrial surface area, have been predicted to be one of the most responsive ecosystem types to…”
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Invasion syndromes： hypotheses on relationships among invasive species attributes and characteristics of invaded sites by Perkins, Lora B., Nowak, Robert S.

“…As invasion science accepts that there is no single causal factor for biological invasion, the identification of groups of traits that are often associated, or…”
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Native and non-native grasses generate common types of plant-soil feedbacks by altering soil nutrients and microbial communities by Perkins, Lora B., Nowak, Robert S.

“…Soil conditioning occurs when plants alter features of their soil environment. When these alterations affect subsequent plant growth, it is a plant-soil…”
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Limited carbon inputs from plants into soils in arid ecosystems: a study of changes in the δ¹³C in the soil-root interface by Rovira, Pere, Aranjuelo, Iker, Nowak, Robert S., Nogués, Salvador

“…Background and aims The tracing of C assimilation and the subsequent partitioning among plant organs has been a central focus of studies utilising Free Air CO…”
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No cumulative effect of 10 years of elevated [CO2] on perennial plant biomass components in the Mojave Desert by Newingham, Beth A., Vanier, Cheryl H., Charlet, Therese N., Ogle, Kiona, Smith, Stanley D., Nowak, Robert S.

“…Elevated atmospheric CO2 concentrations ([CO2]) generally increase primary production of terrestrial ecosystems. Production responses to elevated [CO2] may be…”
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Transitory effects of elevated atmospheric CO₂ on fine root dynamics in an arid ecosystem do not increase long-term soil carbon input from fine root litter by Ferguson, Scot D., Nowak, Robert S.

“…• Experimental increases in atmospheric CO₂ often increase root production over time, potentially increasing soil carbon (C) sequestration. • Effects of…”
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Natural selection favors root investment in native grasses during restoration of invaded fields by Ferguson, Scot D., Leger, Elizabeth A., Li, Jun, Nowak, Robert S.

“…Competitive interactions with invasive species can cause evolutionary changes in native populations. In the Great Basin, USA, the invasive annual grass Bromus…”
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Spatio-temporal analysis of remotely-sensed forest mortality associated with road de-icing salts by Fan, Yuanchao, Weisberg, Peter J., Nowak, Robert S.

“…Forest mortality along highways has long been a concern in areas where de-icing compounds are applied during winter. This study combined the spatial advantage…”
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Plant-induced changes in soil nutrient dynamics by native and invasive grass species by Perkins, Lora B., Johnson, Dale W., Nowak, Robert S.

“…Alteration of soil nutrient dynamics has recently garnered more attention as both a cause and an effect of plant invasion. This project examines how nutrient…”
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Physiological and morphological responses of Tamarix ramosissima and Populus euphratica to altered groundwater availability by Li, J, Yu, B, Zhao, C, Nowak, Robert S, Zhao, Z, Sheng, Y, Li, J

“…Riparian plants in arid areas are subject to frequent hydrological fluctuations induced through natural flow variation and water use by humans. Although many…”
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Contrasting responses of woody and grassland ecosystems to increased CO2 as water supply varies by Pan, Yude, Jackson, Robert B., Hollinger, David Y., Phillips, Oliver L., Nowak, Robert S., Norby, Richard J., Oren, Ram, Reich, Peter B., Lüscher, Andreas, Mueller, Kevin E., Owensby, Clenton, Birdsey, Richard, Hom, John, Luo, Yiqi

“…Experiments show that elevated atmospheric CO 2 (eCO 2 ) often enhances plant photosynthesis and productivity, yet this effect varies substantially and may be…”
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temperature responses of soil respiration in deserts: a seven desert synthesis by Cable, Jessica M, Ogle, Kiona, Lucas, Richard W, Huxman, Travis E, Loik, Michael E, Smith, Stanley D, Tissue, David T, Ewers, Brent E, Pendall, Elise, Welker, Jeffrey M, Charlet, Therese N, Cleary, Meagan, Griffith, Alden, Nowak, Robert S, Rogers, Matthew, Steltzer, Heidi, Sullivan, Patrick F, van Gestel, Natasja C

“…The temperature response of soil respiration in deserts is not well quantified. We evaluated the response of respiration to temperatures spanning 67°C from…”
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Invasion triangle: an organizational framework for species invasion by Perkins, Lora B., Leger, Elizabeth A., Nowak, Robert S.

“…Species invasion is a complex, multifactor process. To encapsulate this complexity into an intuitively appealing, simple, and straightforward manner, we…”
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effects of elevated CO₂ on root respiration rates of two Mojave Desert shrubs by CLARK, NAOMI M, APPLE, MARTHA E, NOWAK, ROBERT S

“…Although desert ecosystems are predicted to be the most responsive to elevated CO₂, low nutrient availability may limit increases in productivity and cause…”
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Do increased summer precipitation and N deposition alter fine root dynamics in a Mojave Desert ecosystem? by Verburg, Paul S. J., Young, Andrew C., Stevenson, Bryan A., Glanzmann, Isabelle, Arnone III, John A., Marion, Giles M., Holmes, Christopher, Nowak, Robert S.

“…Climate change is expected to impact the amount and distribution of precipitation in the arid southwestern United States. In addition, nitrogen (N) deposition…”
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