Soil properties and climate drive ponderosa pine seedling presence in the southwestern USA

Puhlick, Joshua J.; Laughlin, Daniel C.; Moore, Margaret M.; Sieg, Carolyn Hull; Overby, Steven T.; Shaw, John D.

doi:10.1016/j.foreco.2021.118972

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…In addition, the chemical properties of the soil, which serves as the substrate for seedling regeneration, play a crucial role in the regeneration process (Martini et al 2020;Puhlick et al 2021). We observed a negative correlation between the response ratio of seedling height growth and soil pH.…”

Section: Factors Influencing the Effect Of Bamboo Removalmentioning

confidence: 65%

Understory bamboo removal impacts on woody seedling regeneration in forest ecosystems: a meta-analysis

Luo,

Ma,

Luo

et al. 2024

Ecol Process

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Background Tree seedling regeneration in forests is often hindered by the competitive influence of dense understory bamboo competition. While localized studies have investigated the ecological effects of understory bamboo removal on tree seedlings, a comprehensive analysis at a global scale is lacking. In this meta-analysis, we synthesized 497 observations from 32 experimental studies to assess the overall effects of understory bamboo removal on tree seedling regeneration. Results The results showed that understory bamboo removal enhanced tree seedling survival, emergence, and height growth. However, the response of tree seedlings to bamboo removal varied depending on regeneration characteristics, forest types, and bamboo removal methods. Specifically, understory bamboo removal increased the survival rate of deciduous seedlings but had no significant effect on evergreen seedlings. For regeneration stages, bamboo removal had a significant positive effect on the survival rate of saplings but not on seedlings. Regarding differences across forest types, bamboo removal significantly increased the emergence density of seedlings in deciduous broadleaf forests but had a significant negative influence in evergreen and mixed evergreen-deciduous forests. Additionally, natural removal of bamboo showed a greater positive effect on seedlings than bamboo removal by artificial or animal gnawing methods. Furthermore, we found that the duration of bamboo removal, mean annual temperature, precipitation of seasonality, and soil pH strongly influenced the response ratios of tree seedling regeneration. Conclusions Our meta-analysis demonstrates the significant effects of understory bamboo removal on multiple facets of tree seedling dynamics across different regeneration characteristics, forest types, and bamboo removal methods. In addition, our study emphasizes that the duration of bamboo removal, climate, and soil pH have a critical effect on tree seedling regeneration. Our findings elucidate the effects of understory bamboo removal on seedling regeneration, offering robust scientific insights for sustainable forest management.

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Section: Factors Influencing the Effect Of Bamboo Removalmentioning

confidence: 65%

Understory bamboo removal impacts on woody seedling regeneration in forest ecosystems: a meta-analysis

Luo,

Ma,

Luo

et al. 2024

Ecol Process

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“…Both experiments were conducted at New Mexico State University’s John T. Harrington Forestry Research Center greenhouse (35° 97’ 63” N, 105° 34’ 81” W) in Mora, NM. For both the nursery conditioning experiment and the simulated outplanting experiment (hereafter NCE and SOE, respectively), three P. ponderosa seed sources were selected based on variations in mean annual precipitation and mean annual temperature conditions that significantly affect ponderosa pine growth in the southwestern US ( Adams and Kolb, 2005 ; Puhlick et al., 2021 ). The Valle Vidal Canyon source was collected from the Carson National Forest (36° 45’ 07” N, 105° 16’ 09” W).…”

Section: Methodsmentioning

confidence: 99%

Physiological and morphological responses of Pinus ponderosa seedlings to moisture limitations in the nursery and their implications for restoration

Pinto,

Sloan,

Ervan

et al. 2023

Front. Plant Sci.

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Successful establishment of Pinus ponderosa seedlings in the southwestern United States is often limited by stressful and harsh site conditions related to drought severity and severe disturbances such as wildfire and mining operations. Seedling quality has an important influence on outplanting performance, but nursery practices that typically employ optimal growing environments may also be limiting seedling morphological and physiological performance on stressful outplanting sites. To address this, a study was established to test alterations in seedling characteristics subjected to irrigation limitations during nursery culture and their subsequent outplanting performance. This study was conducted as two separate experiments: (1) a nursery conditioning experiment examined seedling development of three New Mexico seed sources exposed to three irrigation levels (low, moderate, and high); (2) a simulated outplanting experiment examined a subset of the seedlings from experiment 1 in a controlled outplanting environment consisting of two soil moisture conditions (mesic, maintained via irrigation and dry, irrigated only once). In the nursery study, the lack of interactions between seed source and irrigation main effects for most response variables indicate that low irrigation treatment level responses were consistent across a range of sources. Irrigation treatment levels from the nursery resulted in few morphological differences; however, the low irrigation level increased physiological parameters such as net photosynthetic rate and water use efficiency. In the simulated outplanting experiment, seedlings subjected to less irrigation in the nursery had greater mean height, diameter, needle dry mass, and stem dry mass; additionally, low irrigation levels in the nursery increased the amount of hydraulically active xylem and xylem flow velocity. Overall, this study shows that nursery culture irrigation limitations, regardless of the seed sources tested, can improve seedling morphology and physiological functioning under simulated dry outplanting conditions. This may ultimately translate to increased survival and growth performance on harsh outplanting sites.

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Tamm Review: Postfire landscape management in frequent-fire conifer forests of the southwestern United States

Stevens

Haffey

Fornwalt

et al. 2021

Forest Ecology and Management

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Soil properties and climate drive ponderosa pine seedling presence in the southwestern USA

Cited by 4 publications

References 38 publications

Understory bamboo removal impacts on woody seedling regeneration in forest ecosystems: a meta-analysis

Understory bamboo removal impacts on woody seedling regeneration in forest ecosystems: a meta-analysis

Physiological and morphological responses of Pinus ponderosa seedlings to moisture limitations in the nursery and their implications for restoration

Tamm Review: Postfire landscape management in frequent-fire conifer forests of the southwestern United States

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