This page has only limited features, please log in for full access.

Unclaimed
Owen T. Burney
John T Harrington Forestry Research Center, New Mexico State University, Mora, NM 87732, USA

Basic Info

Basic Info is private.

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 22 October 2020 in Forests
Reads 0
Downloads 0

Anthropogenic activity has caused persistent and prominent losses of forest cover in dry tropical forests. Natural regeneration of forest trees in grazed areas often fails due to lack of seed sources and consumption by ungulates. To address this, the effective restoration of such sites often requires fencing and outplanting nursery-grown seedlings. In the degraded, dry forests of tropical Hawaii, USA, an additional challenge to restoration of native forest trees is the introduced kikuyu grass (Cenchrus clandestinus). This invasive, rapidly growing rhizomatous plant forms deep, dense mats. We studied the use of nursery cultural techniques to facilitate the establishment of koa (Acacia koa) seedlings outplanted amidst well-established kikuyu grass on a volcanic cinder cone on the dry, western side of Hawaii Island. Seedlings were grown four months in three container sizes (49, 164, 656 cm3) and with four rates (0, 4.8, 7.2, and 9.6 kg m−3) of 15–9–12 (NPK) controlled-release fertilizer incorporated into media prior to sowing. After 16 months in the field, seedling survival was > 80% for all treatments with two exceptions: the non-fertilized 49 cm3 (78%) and 164 cm3 (24%) containers. After 10 years, only these two treatments had significantly lower survival (35% and 10%, respectively) than the other treatments. One year following planting, none of the non-fertilized seedlings had transitioned to phyllodes from juvenile true leaves, regardless of container size. For the fertilized 656 cm3 container treatment, 78%–85% of seedlings had phyllodes, with mean values increasing by fertilizer rate. Phyllodes are known to confer greater drought resistance than true leaves in koa, which may help to explain the improved survival of fertilized trees on this relatively dry site. Overall, nursery fertilization was more influential on seedling height and diameter response than container size after outplanting. However, the largest container (656 cm3) with the addition of fertilizer, produced significantly larger trees than all other treatments during the early regeneration phase; early growth differences tended to fade at 10 years due to inter-tree canopy competition. Although koa is able to fix atmospheric nitrogen through rhizobium associations, our data confirm the importance of nursery fertilization in promoting regeneration establishment. Nursery cultural techniques may play an important role in forest restoration of dry tropical sites invaded by exotic vegetation.

ACS Style

Douglass F. Jacobs; Anthony S. Davis; R. Kasten Dumroese; Owen T. Burney. Nursery Cultural Techniques Facilitate Restoration of Acacia koa Competing with Invasive Grass in a Dry Tropical Forest. Forests 2020, 11, 1124 .

AMA Style

Douglass F. Jacobs, Anthony S. Davis, R. Kasten Dumroese, Owen T. Burney. Nursery Cultural Techniques Facilitate Restoration of Acacia koa Competing with Invasive Grass in a Dry Tropical Forest. Forests. 2020; 11 (11):1124.

Chicago/Turabian Style

Douglass F. Jacobs; Anthony S. Davis; R. Kasten Dumroese; Owen T. Burney. 2020. "Nursery Cultural Techniques Facilitate Restoration of Acacia koa Competing with Invasive Grass in a Dry Tropical Forest." Forests 11, no. 11: 1124.

Journal article
Published: 04 October 2020 in Forests
Reads 0
Downloads 0

Ponderosa pine (Pinus ponderosa Lawson & C. Lawson var. scopulorum Engelm.) forests of the southwestern US are threatened by climate change and deforestation. Information about geographic patterns of provenance variation in budburst phenology is needed to make decisions about selecting seed sources for future planting. In this study, provenance variation in the budburst phenology of ponderosa pine seedlings was examined using common garden studies. Seedlings from 21 provenances, representing an elevational gradient in Arizona and New Mexico, were planted in July 2018 at a ponderosa pine-dominated field site in northern Arizona. Field budburst was monitored weekly on all seedlings in the spring of 2019. Field budburst was compared with budburst timing of the same provenances measured under greenhouse conditions. The hypotheses for this study were that (1) budburst varies among provenances, with earlier budburst in low-elevation provenances, and (2) differences in budburst timing among provenances are consistent for seedlings grown in greenhouse and field environments. Field results show that provenances vary in budburst date and that low- and middle-elevation provenances break bud sooner than high-elevation provenances. Field budburst date had a moderate, positive correlation with provenance mean annual precipitation (r = 0.522) and a moderate, negative trend with latitude (r = −0.413). Budburst date of provenances in the greenhouse had a moderate, positive trend with budburst date in the field (r = 0.554), suggesting application of greenhouse results to field plantings. Such information about provenance variation and environmental and geographic trends in budburst timing will be useful for developing species-specific seed transfer guidelines and effective assisted migration strategies in a changing climate.

ACS Style

Aalap Dixit; Thomas Kolb; Owen Burney. Provenance Geographical and Climatic Characteristics Influence Budburst Phenology of Southwestern Ponderosa Pine Seedlings. Forests 2020, 11, 1067 .

AMA Style

Aalap Dixit, Thomas Kolb, Owen Burney. Provenance Geographical and Climatic Characteristics Influence Budburst Phenology of Southwestern Ponderosa Pine Seedlings. Forests. 2020; 11 (10):1067.

Chicago/Turabian Style

Aalap Dixit; Thomas Kolb; Owen Burney. 2020. "Provenance Geographical and Climatic Characteristics Influence Budburst Phenology of Southwestern Ponderosa Pine Seedlings." Forests 11, no. 10: 1067.

Original research article
Published: 04 September 2020 in Frontiers in Plant Science
Reads 0
Downloads 0

In the western US, quaking aspen (Populus tremuloides Michx.) regenerates primarily by root suckers after disturbances such as low to moderate severity fires. Planting aspen seedlings grown from seed may provide a mechanism to improve restoration success and genetic diversity on severely disturbed sites. However, few studies have examined the use of container-grown aspen seedlings for restoration purposes from both the outplanting and nursery production perspective. Thus, the purpose of this novel study was to examine how alterations in irrigation levels during nursery production across three seed sources would impact seedling performance attributes on harsh, dry outplanting sites. Irrigation treatments were based on three irrigation levels, determined gravimetrically: High = 90%, Medium = 80%, and Low = 70% of container capacity. The three seed sources represented a latitudinal gradient across the aspen range (New Mexico, Utah, and Alberta). Carbon isotope analysis indicated irrigation treatments were effective in creating higher levels of water stress for both the Low and Medium irrigation levels compared to seedlings under the High irrigation level. Seedlings subject to the Low irrigation level were found to induce greater height, higher photosynthetic rates, larger percentages of hydraulically active xylem, and faster xylem flow velocities compared to the High irrigation level. The lack of an interaction between irrigation treatments and seed source for nearly all response variables suggests that nursery conditioning via irrigation limitations may be effective for a range of aspen seed sources.

ACS Style

Joshua L. Sloan; Owen T. Burney; Jeremiah R. Pinto. Drought-Conditioning of Quaking Aspen (Populus tremuloides Michx.) Seedlings During Nursery Production Modifies Seedling Anatomy and Physiology. Frontiers in Plant Science 2020, 11, 1 .

AMA Style

Joshua L. Sloan, Owen T. Burney, Jeremiah R. Pinto. Drought-Conditioning of Quaking Aspen (Populus tremuloides Michx.) Seedlings During Nursery Production Modifies Seedling Anatomy and Physiology. Frontiers in Plant Science. 2020; 11 ():1.

Chicago/Turabian Style

Joshua L. Sloan; Owen T. Burney; Jeremiah R. Pinto. 2020. "Drought-Conditioning of Quaking Aspen (Populus tremuloides Michx.) Seedlings During Nursery Production Modifies Seedling Anatomy and Physiology." Frontiers in Plant Science 11, no. : 1.

Journal article
Published: 25 October 2019 in Forests
Reads 0
Downloads 0

Herbivory and competition during the regeneration phase influence forest successional dynamics. We demonstrated the importance of using the Target Plant Concept to identify and overcome site limiting factors for subtropical maritime forest restoration associated with deer browsing and competition. Quercus virginiana Mill. (live oak) bareroot seedlings were planted into clearcuts along the US Southern Atlantic coast with different treatment combinations of herbivory control (fenced or non-fenced) against white-tailed deer (Odocoileus virginianus Zimm.) browsing and competing vegetation removal (none, one-year, or two-years). After three growing seasons, mean seedling survival was 61% with no significant treatment differences. Control of browse and vegetation interacted to facilitate growth of live oak; seedlings were significantly larger for all response parameters (diameter, height, crown width) when fenced and treated with vegetation control. Removal of vegetation improved seedling performance only in fenced plots, however, indicating a shift in pressure from herbivory to competition as the most limiting site factor when deer were excluded. After the second growing season, foliar nitrogen was greater in fenced plots than non-fenced plots and greater in two-year vegetation control subplots than non-vegetation control subplots. This result, however, was absent after the third growing season. Three years after clearcutting, there was no evidence of Q. virginiana natural regeneration in non-fenced plots. Even with artificial regeneration in non-fenced plots, Q. virginiana growth was slow, indicating that herbivory was a key limiting factor. Our findings illustrate the importance of accounting for site limiting factors and may aid in developing management prescriptions to promote semi-evergreen oak regeneration in ecosystems with high pressure from herbivory and competing vegetation.

ACS Style

Emily C. Thyroff; Owen T. Burney; Douglass F. Jacobs. Herbivory and Competing Vegetation Interact as Site Limiting Factors in Maritime Forest Restoration. Forests 2019, 10, 950 .

AMA Style

Emily C. Thyroff, Owen T. Burney, Douglass F. Jacobs. Herbivory and Competing Vegetation Interact as Site Limiting Factors in Maritime Forest Restoration. Forests. 2019; 10 (11):950.

Chicago/Turabian Style

Emily C. Thyroff; Owen T. Burney; Douglass F. Jacobs. 2019. "Herbivory and Competing Vegetation Interact as Site Limiting Factors in Maritime Forest Restoration." Forests 10, no. 11: 950.

Journal article
Published: 28 June 2019 in Forests
Reads 0
Downloads 0

In developing countries, tree seedlings are often produced in polybags filled with mixtures of locally available materials. Seedling growth and quality can be affected by the type and amount of these substrates used in the mixture. Differences in seedling growth and quality can also be significantly affected when fertilization is employed during the nursery growing period. In this study, we assessed the effects of five different growing media and two fertilization regimes on nursery growth, seedling morphology and early post-planting response to drought of Eucalyptus benthamii (Maiden & Cambage) seedlings. First, we evaluated the effects of each media by fertilizer treatment combination on morphological attributes during a nursery growing period. Seedlings raised in fertilized media without rice hulls yielded higher growth, root dry mass, shoot dry mass, total dry mass, Dickson quality index (DQI) scores, and number of first order lateral roots (FOLRs). Root to shoot ratio (R:S ratio) was, however, greater in non-fertilized media that contained rice hulls. We then conducted a simulated outplanting and drought hardiness experiment, in which seedlings were planted in 13.2 L containers and irrigated for one month, followed by the imposition of drought stress. Seedlings in fertilized media composed of sand, topsoil and compost showed greater growth than those in rice hull-containing media, during the irrigation phase. With the discontinuation of irrigation and prevention of precipitation reaching the seedlings, seedlings grown in non-fertilized media containing rice hulls survived longer than those in other media. There were no large differences in survival among other media or between fertilized and other non-fertilized seedlings. Seedling total size and shoot height at the time of planting played a major role in survival. Smaller seedlings with smaller shoot sizes and greater R:S ratios survived longer. This study demonstrates that growing media and fertilization can be manipulated to affect seedling morphology in the nursery and, ultimately, seedling performance and survival under water stressed conditions.

ACS Style

Mohammad Nasir Shalizi; Barry Goldfarb; Owen Thomas Burney; Theodore Henry Shear. Effects of Five Growing Media and Two Fertilizer Levels on Polybag—Raised Camden Whitegum (Eucalyptus benthamii Maiden & Cambage) Seedling Morphology and Drought Hardiness. Forests 2019, 10, 543 .

AMA Style

Mohammad Nasir Shalizi, Barry Goldfarb, Owen Thomas Burney, Theodore Henry Shear. Effects of Five Growing Media and Two Fertilizer Levels on Polybag—Raised Camden Whitegum (Eucalyptus benthamii Maiden & Cambage) Seedling Morphology and Drought Hardiness. Forests. 2019; 10 (7):543.

Chicago/Turabian Style

Mohammad Nasir Shalizi; Barry Goldfarb; Owen Thomas Burney; Theodore Henry Shear. 2019. "Effects of Five Growing Media and Two Fertilizer Levels on Polybag—Raised Camden Whitegum (Eucalyptus benthamii Maiden & Cambage) Seedling Morphology and Drought Hardiness." Forests 10, no. 7: 543.

Journal article
Published: 13 July 2018 in Forests
Reads 0
Downloads 0

Haiti has suffered great losses from deforestation, with little forest cover remaining today. Current reforestation efforts focus on seedling quantity rather than quality. This study examined limitations to the production of high-quality seedlings of the endemic Hispaniolan pine (Pinus occidentalis Swartz). Recognizing the importance of applying sustainable development principles to pine forest restoration, the effects of growing media and container types on seedling growth were evaluated with the goal of developing a propagation protocol to produce high-quality seedlings using economically feasible nursery practices. With regard to growing media, seedlings grew best in compost-based media amended with sand. Topsoil, widely used in nurseries throughout Haiti, produced the smallest seedlings overall. Despite a low water holding capacity and limited manganese, compost-based media provided adequate levels of essential mineral nutrients (particularly nitrogen), which allowed for sufficient seedling nutrition. Seedling shoot and root growth, as well as the ratio of shoot biomass to root biomass, were greater in polybags relative to D40s. Results indicate that economically feasible improvements to existing nursery practices in Haiti can improve the early growth rates of P. occidentalis seedlings.

ACS Style

Kyrstan L. Hubbel; Amy L. Ross-Davis; Jeremiah R. Pinto; Owen T. Burney; Anthony S. Davis. Toward Sustainable Cultivation of Pinus occidentalis Swartz in Haiti: Effects of Alternative Growing Media and Containers on Seedling Growth and Foliar Chemistry. Forests 2018, 9, 422 .

AMA Style

Kyrstan L. Hubbel, Amy L. Ross-Davis, Jeremiah R. Pinto, Owen T. Burney, Anthony S. Davis. Toward Sustainable Cultivation of Pinus occidentalis Swartz in Haiti: Effects of Alternative Growing Media and Containers on Seedling Growth and Foliar Chemistry. Forests. 2018; 9 (7):422.

Chicago/Turabian Style

Kyrstan L. Hubbel; Amy L. Ross-Davis; Jeremiah R. Pinto; Owen T. Burney; Anthony S. Davis. 2018. "Toward Sustainable Cultivation of Pinus occidentalis Swartz in Haiti: Effects of Alternative Growing Media and Containers on Seedling Growth and Foliar Chemistry." Forests 9, no. 7: 422.

Research article
Published: 14 March 2017 in Environmental Science and Pollution Research
Reads 0
Downloads 0

This greenhouse study examined the use of organic and inorganic soil amendments in waste rock material from the former Questa Molybdenum Mine in northern New Mexico to promote beneficial soil properties. Waste rock material was amended with 11 soil amendment treatments that included municipal composted biosolids, Biosol®, inorganic fertilizer, and two controls (pure waste rock and sand). Elymus trachycaulus and Robinia neomexicana growth performance and plant chemistry were assessed across all treatments over a period of 99 and 141 days, respectively. Even though waste rock material had more than 200 times the molybdenum concentration of native soils, adverse effects were not observed for either species. The two main limiting factors in this study were soil nutritional status and soil water retention. The biosolid amendment was found to provide the greatest buffer against these limiting factors due to significant increases in both nutrition and soil water retention. As a result, both species responded with the highest levels of biomass production and the least amount of required water demands. Use of organic amendments such as biosolids, even though short lived in the soil, may provide plants the necessary growth stimulus to become more resilient to the harsh conditions found on many mine reclamation sites.

ACS Style

Owen T. Burney; Edward F. Redente; Charles E. Lambert. Plant growth in amended molybdenum mine waste rock. Environmental Science and Pollution Research 2017, 24, 11215 -11227.

AMA Style

Owen T. Burney, Edward F. Redente, Charles E. Lambert. Plant growth in amended molybdenum mine waste rock. Environmental Science and Pollution Research. 2017; 24 (12):11215-11227.

Chicago/Turabian Style

Owen T. Burney; Edward F. Redente; Charles E. Lambert. 2017. "Plant growth in amended molybdenum mine waste rock." Environmental Science and Pollution Research 24, no. 12: 11215-11227.

Journal article
Published: 11 August 2013 in New Forests
Reads 0
Downloads 0

Fertilization at planting may improve reforestation productivity on sites frequented by ungulates by stimulating rapid growth above the browse line, allowing seedlings to escape animal damage. Additionally, stored nutrients may aid seedlings in recovery from browse damage. High plant nutrient content may, however, deem seedlings more susceptible to ungulate browsing because of increased foliar protein content and, thus, nutritional value. Research examining the relationship between fertilization of forest trees and ungulate herbivory has been conducted almost exclusively in boreal and temperate zones of North America and Europe, and has produced two common themes. The first is that nearly all trials used broadcast application of fertilizer. This method supplies nutrients to both the target species and competing vegetation, resulting in significant increases in nutritional value for all potential forage. The second common theme is that there is a higher likelihood of browse for fertilized plants. Exceptions to this thread exist, however, because browse preference of fertilized seedlings is apparently species-specific due to differences among species in resource allocation. Palatability appears to interact with the production of plant chemical defenses (i.e., alkaloids, phenylpropanoids, terpenoids). Variations in plant mineral nutrition and secondary metabolite production can play a significant role determining forage preference; however, ungulates under starvation or stress will browse plants of high toxicity or low nutritional value to maintain fitness.

ACS Style

Owen T. Burney; Douglass Jacobs. Ungulate herbivory of boreal and temperate forest regeneration in relation to seedling mineral nutrition and secondary metabolites. New Forests 2013, 44, 753 -768.

AMA Style

Owen T. Burney, Douglass Jacobs. Ungulate herbivory of boreal and temperate forest regeneration in relation to seedling mineral nutrition and secondary metabolites. New Forests. 2013; 44 (5):753-768.

Chicago/Turabian Style

Owen T. Burney; Douglass Jacobs. 2013. "Ungulate herbivory of boreal and temperate forest regeneration in relation to seedling mineral nutrition and secondary metabolites." New Forests 44, no. 5: 753-768.

Journal article
Published: 01 April 2012 in Environmental and Experimental Botany
Reads 0
Downloads 0
ACS Style

Owen T. Burney; Anthony S. Davis; Douglass Jacobs. Phenology of foliar and volatile terpenoid production for Thuja plicata families under differential nutrient availability. Environmental and Experimental Botany 2012, 77, 44 -52.

AMA Style

Owen T. Burney, Anthony S. Davis, Douglass Jacobs. Phenology of foliar and volatile terpenoid production for Thuja plicata families under differential nutrient availability. Environmental and Experimental Botany. 2012; 77 ():44-52.

Chicago/Turabian Style

Owen T. Burney; Anthony S. Davis; Douglass Jacobs. 2012. "Phenology of foliar and volatile terpenoid production for Thuja plicata families under differential nutrient availability." Environmental and Experimental Botany 77, no. : 44-52.