Progeny Performance and Pathogen Attack Relative to Elevation in a Neotropical Tree

Renison, Daniel; Bergero, Hernán; Soteras, Florencia; Herrero, M.; Rodríguez, Juan Manuel; Torres, Romina; Cingolani, Ana M.; Hensen, Isabell

doi:10.1590/01047760201925012566

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…At outplanting, Kageneckia saplings were 19 months old, 44.6 AE 0.8 cm in mean height, and had been acclimatized to the harsher conditions outside the nursery for 30 days. Details on the production of these Kageneckia saplings are provided in Renison et al (2019).…”

Section: Methodsmentioning

confidence: 99%

Effects of forest preservation, livestock exclusion, and use of shrubs as potential nurses on planting success of an endangered tree

Torres

Pollice

Valfré-Giorello

et al. 2021

Restoration Ecology

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Domestic livestock are widespread in seasonally dry forests, likely causing forest degradation and limiting tree seedling establishment. Shrubs can play an important role in facilitating tree regeneration, by protecting trees from livestock damage and ameliorating unfavorable abiotic conditions. We aimed at disentangling the relative contribution of grazing exclusion, long‐term forest conservation, and the potential facilitation effect of shrubs on the performance of saplings of the native tree Kageneckia lanceolata. We planted 400 saplings in grazed and ungrazed areas situated both in a preserved and a degraded forest. In each situation, we established planting plots in three accompanying vegetation treatments: herbs, a nonleguminous spiny shrub and a leguminous spiny shrub. Survival of 3‐year‐old saplings was 10‐fold higher in the preserved than in the degraded forest and 2‐fold higher in the ungrazed than in the grazed site. Differences in survival among accompanying vegetation treatments were much smaller than between grazing treatments. Survival significantly increased with increasing protection by shrubs only in the degraded site. Sapling growth patterns were fairly similar to survival patterns, with no growth in the degraded forest, except for limited growth under both shrubs in the ungrazed site. We conclude that, in selecting plantation sites for the study species, forest condition and grazing exclusion should be prioritized over microsite selection based on neighboring vegetation.

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Section: Methodsmentioning

confidence: 99%

Effects of forest preservation, livestock exclusion, and use of shrubs as potential nurses on planting success of an endangered tree

Torres

Pollice

Valfré-Giorello

et al. 2021

Restoration Ecology

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“…A previous study also found that survival of K. lanceolata seedlings increases with elevational origin due to increased damping‐off resistance (Renison et al . 2019). These results suggest that elevation‐dependent patterns are common in this wind‐dispersed species.…”

Section: Discussionmentioning

confidence: 99%

“…2018; Renison et al . 2019). For seeds from low elevations, water stress affects the formation of flowers and the quantity and quality of fruits, leading to reproductive failure (Giménez‐Benavides et al .…”

Section: Discussionmentioning

confidence: 99%

Effects of freezing temperatures on early life stages of native trees of different elevational origin: implications for tree recruitment in seasonally dry mountain forests

Torres,

Valfré‐Giorello,

Cingolani

et al. 2023

Plant Biol J

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In mountain forests, tree regeneration is limited by increasingly frequent frosts with increasing elevation. We investigated the effects of exposure to freezing temperature on early life stages of two native trees of different elevational origin in a seasonally dry mountain forest. We hypothesized that the negative effects of freezing exposure on performance of early life stages increases as freezing temperature decreases, and that frost resistance increases in plants of high elevational origin. We collected seeds of two tree species (Kageneckia lanceolata and Lithraea molleoides) from populations located at different elevations and grew seedlings and saplings in a greenhouse. Dry seeds, imbibed seeds and 1‐month‐old seedlings were exposed to seven temperature treatments ranging from 4 °C to −20 °C, while 12‐month‐old saplings were exposed to four temperature treatments from −8 °C to −20 °C. After freezing exposure in a climate chamber, we monitored seed germination and seedling and sapling survival. Germination of K. lanceolata decreased with decreasing temperature only for imbibed seeds from mid‐ and high elevations, whereas germination of L. molleoides slightly increased with decreasing temperature only for imbibed seeds from high elevations. For both species, seedling survival decreased with decreasing temperature. For K. lanceolata, the negative effects of freezing temperatures were weaker as elevational origin of seeds increased, whereas L. molleoides showed the opposite pattern. For both species, saplings only survived at the mildest applied freezing temperature (−8 °C). We conclude that effects of climatic variation associated with elevation depend on the study species and life stage. The observed patterns could be caused by maternal effects, which are absent at the sapling stage. Moreover, temperatures below −8 °C can limit recruitment since partial mortality of seedlings and saplings occurred at such values.

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Invertebrate herbivory rather than competition with tussocks will increasingly delay highland forest regeneration in degraded areas under active restoration

Renison

Rodríguez

Cannata

et al. 2022

Forest Ecology and Management

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Progeny Performance and Pathogen Attack Relative to Elevation in a Neotropical Tree

Cited by 4 publications

References 17 publications

Effects of forest preservation, livestock exclusion, and use of shrubs as potential nurses on planting success of an endangered tree

Effects of forest preservation, livestock exclusion, and use of shrubs as potential nurses on planting success of an endangered tree

Effects of freezing temperatures on early life stages of native trees of different elevational origin: implications for tree recruitment in seasonally dry mountain forests

Invertebrate herbivory rather than competition with tussocks will increasingly delay highland forest regeneration in degraded areas under active restoration

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