Zobrazeno 1 - 10 of 21 pro vyhledávání: '"Alexander L. Friend"'
1
Effects of an invasive herbivore at the single plant scale do not extend to population-scale seedling dynamics
Autor: Alexander L. Friend, Kenneth F. Raffa, William J. Mattson, David R. Coyle
Publikováno v: Canadian Journal of Forest Research. 44:8-16
A complex of nine invasive weevils has established in the northern hardwood forests of the Great Lakes Region. These weevils have become the numerically dominant arthropod fauna in the lower vegetation strata of this ecosystem. Effects of these foliv
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81b3028ba9d1672a388894a8a208d890
https://doi.org/10.1139/cjfr-2013-0307
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2
13C labeling of plant assimilates using a simple canopy-scale open air system
Autor: Matthew D. Powers, Kurt S. Pregitzer, Kate L. Bradley, Samir A. Qadir, Alexander L. Friend, Alan F. Talhelm
Publikováno v: Plant and Soil. 296:227-234
A simple system based on web-FACE technology was designed and implemented as an approach to label plant-assimilated carbon (C) with 13C. The labeling system avoids the use of a chamber or other enclosure, instead distributing CO2 heavily enriched in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6053d21c3426797a553563f59c53fb31
https://doi.org/10.1007/s11104-007-9312-7
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3
Loblolly pine and slash pine responses to acute aluminum and acid exposures
Autor: Alexander L. Friend, Jaroslaw Nowak
Publikováno v: Tree Physiology. 26:1207-1215
In response to concerns about aluminum and HCl exposure associated with rocket motor testing and launches, survival and growth of full-sib families of loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) were evaluated in a nursery
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9552ad566fd258ff60e8a100b8f5ec59
https://doi.org/10.1093/treephys/26.9.1207
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4
Poultry Litter Application to Loblolly Pine Forests
Autor: Stephen H. Schoenholtz, Scott D. Roberts, Alexander L. Friend, Patrick D. Gerard, Juanita A. Mobley
Publikováno v: Journal of Environmental Quality. 35:837-848
Forestland application of poultry manure offers an alternative to the conventional practice of pastureland application. Before such a practice is considered viable, however, it must be demonstrated that the forest ecosystem is capable of absorbing th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67525bf778902b9e6f6bb4f29a8f12cb
https://doi.org/10.2134/jeq2005.0244
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5
Interannual climatic variation mediates elevated CO2 and O3 effects on forest growth
Autor: Mark E. Kubiske, David F. Karnosky, Ron M. Teclaw, Paula E. Marquardt, Evan P. McDonald, Vanessa S. Quinn, Alexander L. Friend, Warren E. Heilman
Publikováno v: Global Change Biology. 12:1054-1068
We analyzed growth data from model aspen (Populus tremuloides Michx.) forest ecosystems grown in elevated atmospheric carbon dioxide ([CO2]; 518?LL-1) and ozone concentrations ([O3]; 1.5 x background of 30-40 nL L-1 during daylight hours) for 7 years
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a389a4e67dfefe38a23490dda2aa6a4
https://doi.org/10.1111/j.1365-2486.2006.01152.x
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6
Aluminum fractions in root tips of slash pine and loblolly pine families differing in Al resistance
Autor: Jaroslaw Nowak, Alexander L. Friend
Publikováno v: Tree Physiology. 25:245-250
Aluminum (Al) distribution among several cellular fractions was investigated in root tips of seedlings of one Al-resistant and one Al-sensitive family of slash pine (Pinus elliottii Engelm.) and loblolly pine (Pinus taeda L.) grown in nutrient soluti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d4adfb9a4b049c35030894e108ec2da
https://doi.org/10.1093/treephys/25.2.245
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7
Carbon allocation and nitrogen acquisition in a developingPopulus deltoidesplantation
Autor: Mark D. Coleman, Alexander L. Friend, Christel C. Kern
Publikováno v: Tree Physiology. 24:1347-1357
We established Populus deltoides Bartr. stands differing in nitrogen (N) availability and tested if: (1) N-induced carbon (C) allocation could be explained by developmental allocation controls; and (2) N uptake per unit root mass, i.e., specific N-up
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2de63aa53fe5cbd98783f40c4ba9785
https://doi.org/10.1093/treephys/24.12.1347
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8
Fine root dynamics in a developing Populus deltoides plantation
Autor: Jane M. F. Johnson, Mark D. Coleman, Alexander L. Friend, Christel C. Kern
Publikováno v: Tree Physiology. 24:651-660
A closely spaced (1 x 1 m) cottonwood (Populus deltoides Bartr.) plantation was established to evaluate the effects of nutrient availability on fine root dynamics. Slow-release fertilizer (17:6:12 N,P,K plus micronutrients) was applied to 225-m(2) pl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8776ed3a22fb915681c4052eaee14043
https://doi.org/10.1093/treephys/24.6.651
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10
Elevated atmospheric CO2 and species mixture alter N acquisition of trees in stand microcosms
Autor: John L. Jifon, Alexander L. Friend, Paul C. Berrang, Juanita A. Mobley, John R. Seiler
Publikováno v: Canadian Journal of Forest Research. 30:827-836
The potential for elevated atmospheric CO2 to increase forest growth depends on how it affects plant acquisition of soil nitrogen (N) in realistic competitive settings. We grew seedling microcosms in large (0.6-m2) boxes of forest soil placed outdoor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abedbff237798d6b505a5d9c78294577
https://doi.org/10.1139/x00-019
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