Silvopastoral Systems Under Native Forest in Patagonia Argentina

Peri, Pablo Luís; Hansen, Nidia; Bahamonde, Héctor Alejandro; Lencinas, María Vanessa; Müller, Axel R. von; Ormaechea, Sebastián Gabriel; Gargaglione, Veronica Beatriz; Soler, Rosina; Tejera, Luis; Lloyd, C.; Pastur, Guillermo Martínez

doi:10.1007/978-3-319-24109-8_6

Cited by 39 publications

(76 citation statements)

References 51 publications

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“…Stand tree growth (both, saplings from seed or sprouts) is a functional variable that determines the state resilience and states transitions (Figure 2(a, c)), and that also is associated with other processes (carbon accumulation) and is very sensitive to forest management. For example, in Santa Cruz, the total over bark volume growth rate at stand level was 4.3 ± 0.65 and 3.7 ± 0.43 m 3 /ha/year for the thinned stand and primary forest, respectively (Peri et al 2016d). In this context, we recognize that the models (the METs in general and SFSTM in particular) represent a simplification of complex reality.…”

Section: Discussionmentioning

confidence: 91%

State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience

Peri

López²,

Rusch

et al. 2017

International Journal of Biodiversity Science, Ecosystem Servic

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The sustainable use of ñire forests requires knowledge of its dynamics and management to maintain long-term main forest ecosystem services. The aim of this work was to develop a structural-functional state and transition model for ñire forests in southern Patagonia. For this, provincial inventory information was analyzed together with information from permanent PEBANPA plots (plots of Ecology and Biodiversity, natural environments in Southern Patagonia) and studies of ecology and eco-physiology in ñire forests. This allowed the description of plant communities on these ecological sites and the history of natural disturbances. Seven states and 10 negative transitions were described, as well the factors that trigger transitions (levels of grazing, fire and intense logging). Mature forests with low grazing, no extractive activity and complete canopy cover (>70%) correspond to the reference state or condition of greater integrity, and grassland or murtillar (dominance of Empetrum rubrum) with forest loss is considered the most degraded state. Negative transitions determine the threshold crossings associated with the reduction or loss of resilience to the previous or original state. The development of state and transition models allows for early warnings of deterioration and is a tool to achieve more productive and environmental value. ARTICLE HISTORY

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Section: Discussionmentioning

confidence: 91%

State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience

Peri

López²,

Rusch

et al. 2017

International Journal of Biodiversity Science, Ecosystem Servic

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“…This remaining crown cover provides protection from desiccating strong winds, improving the microclimatic conditions for understorey plants growth and tree regeneration. However, the thinning not only provides synergies with other forest components, but also produce greater trade-offs with other ecosystem services (Gyenge et al, 2011;Martínez Pastur et al, 2017;Peri et al, 2017) and biodiversity components (Lencinas et al, 2008(Lencinas et al, , 2015Quinteros et al, 2010;Peri et al, 2016a). These changes are poorly studied in the long-term, and can be influenced by changes in the climate conditions (Kreps et al, 2012) or biological threats (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…It covers more than 200,000 ha (Soler, 2012;Martínez Pastur et al, 2013), and naturally occur in different environments near drier northern areas close to the ecotone with the Fuegian steppe. These forests are mainly used for sheep and cattle production (Peri et al, 2016a). In this context, silvopastoral systems have become an economical, ecological and productive alternative for these forests .…”

Section: Introductionmentioning

confidence: 99%

“…To date, there is enough information to support most of the silvopastoral proposals, including forest component, natural cycles, regeneration, understorey and biodiversity (Lencinas et al, 2008(Lencinas et al, , 2015Quinteros et al, 2010;Gyenge et al, 2011;Ivancich et al, 2011Ivancich et al, , 2014Soler, 2012;Soler et al, 2013;Bahamonde et al, 2013Bahamonde et al, , 2015Martínez Pastur et al, 2013;Gargaglione et al, 2014;Echevarría et al, 2014;Gönc et al, 2015;Peri et al, 2016aPeri et al, ,b, 2017. However long-term results along the forest cycle, and its resilience deserve special attention.…”

Section: Introductionmentioning

confidence: 99%

“…In Tierra del Fuego (dominant tree height >8 m, and rainfall >350 mm/yr) intensive thinning were proposed, leaving a 30-40% of canopy cover (Peri et al, 2016a(Peri et al, , 2016b. This remaining crown cover provides protection from desiccating strong winds, improving the microclimatic conditions for understorey plants growth and tree regeneration.…”

Section: Introductionmentioning

confidence: 99%

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Long-term monitoring of thinning for silvopastoral purposes in Nothofagus antarctica forests of Tierra del Fuego, Argentina

et al. 2018

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Aim of the study: To analyse the effectiveness of thinning on tree growth, forest structure and microclimatic variables along seven years after cuttings in a secondary Nothofagus antarctica forest in Southern Patagonia.Area of study: Five hectares of homogeneous stand of secondary forests (54º15'46" SL, 66º59'41" WL) in Tierra del Fuego, Argentina.Material and methods: One control and two thinning levels were established, and forest structure, growth, crown dynamic and microclimate variables in long-term permanent plots were evaluated. Main comparisons were made using multiple ANOVAs.Main results: Intensive thinning in secondary forests allowed to increase tree individual growth rates by doubling the radiation levels at the understory level that enhances the silvopastoral management. These forests showed a desirable resilience to the forest interventions and natural disturbances (e.g. heavy defoliator attack), with a rapid reaction in the canopy cover growth.Research highlights: Monitoring of thinning for silvopastoral management must include easy and cheap measuring variables, e.g. diameter growth as a proxy for timber production objectives and hemispherical photos (crown cover and radiation) as a proxy for pasture production. Long-term monitoring allowed to identify reliable indicators that assist new sustainable management alternatives.Additional keywords: crown cover; leaf area index; radiation; insect plague; growth; forest structure. Abbreviations used: BA (basal area); C (control); CC (crown cover); DBH (diameter at breast height); DIF (diffuse radiation); DIR (direct radiation); HT (heavy thinning); LT (light thinning); RLAI (relative leaf area index); SI 50 (site index with a base age of 50 years); TD (tree density); TOBV (total over bark volume); TR (total radiation).

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Patagonian ñire (Nothofagus antarctica) combined with green tea ‐ Novel beverage enriched in bioactive phytochemicals as health promoters

et al. 2022

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Background: Polyphenol-enriched tea is an interesting product for food industries under the current consumer demands. This study aimed at evaluating the Nothofagus antarctica (NA) species as a valuable source of bioactive compounds as well as obtaining an optimized organic green tea (OGT)-NA blend. NA leaves of different developmental stages and several mixture proportions were analyzed. HPLC-DAD-ESI/MSn was used to identify and quantify the polyphenol compounds. Antioxidant capacity and the type of interaction occurring between constituents were assessed.Results: NA infusions exhibited high polyphenol diversity and some differences in the individual concentration were found between NA leaves. NA polyphenol profile showed great complementarity to the one present in green tea. Besides, NA impacted positively the antioxidant strength in the mixtures. Finally, the 67% OGT-33% NA blend exhibited an optimized performance in relative and total polyphenol contents and antioxidant properties, and thus, it could be recommended as a novel beverage.Conclusions: N. antarctica is a valuable source of polyphenol compounds and its combination with green tea, in a blend, could represent an interesting food product. In addition, this new non-wood product constitutes a novel productive strategy for adding value to the silvopastoral systems with positive socio-economic impact.

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Silvopastoral Systems Under Native Forest in Patagonia Argentina

Cited by 39 publications

References 51 publications

State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience

State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience

Long-term monitoring of thinning for silvopastoral purposes in Nothofagus antarctica forests of Tierra del Fuego, Argentina

Patagonian ñire (Nothofagus antarctica) combined with green tea ‐ Novel beverage enriched in bioactive phytochemicals as health promoters

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