Efecto del ramoneo bovino en renovales de Nothofagus antarctica en Chubut, Argentina, en relación con la carga ganadera y la altura de la plantas

Echevarria, Daniela Carola; Müller, Axel Von; Hansen, Nidia; Bava, José

doi:10.4067/s0717-92002014000300010

Cited by 19 publications

(26 citation statements)

References 22 publications

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“…La palatabilidad, que es determinada por una combinación de factores químicos como el contenido de compuestos secundarios, la calidad nutritiva y morfológica y la durabilidad y textura de la hoja también hacen a algunos árboles más elegibles que otros (Hodgson, 1979;Capo et al, 2016). Factores como la edad del árbol y sus mecanismos de defensa al ramoneo también afectan la palatabilidad de éste y la selectividad del ganado (Briske, 1996;Echevarría et al, 2014).…”

Section: Alcance Y Tópicosunclassified

“…Otros componentes de la dieta de bovinos y ovinos afectan la utilización de árboles en su dieta. Si la dieta es variada y equilibrada, es más probable que bovinos y ovinos elijan más material de árboles sin importar el contenido de taninos o la baja calidad nutritiva, que si la dieta es dominada por sólo un componente (Provenza et al, 2003;Echevarría et al, 2014). La carga animal también puede aumentar o disminuir el consumo de las especies leñosas por los animales (Echevarría et al, 2014;Schoenbaum et al, 2017;Capo et al, 2016).…”

Section: Alcance Y Tópicosunclassified

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Factores que influyen en la utilización de especies leñosas por bovinos y ovinos en sistemas pastoriles

Wentzel¹,

Alonso²

2020

agrosur

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Grasslands with associated shrubs and forests represent an important sector of agricultural production and provide indispensable ecosystem services and economic activity for farmers worldwide. Although sheep and cattle diets are principally composed of herbaceous species, these animals also consume woody plant resources even when herbaceous species are available. Given the importance of livestock production in these mixed ecosystems, a thorough understanding of the factors that contribute to the utilization of woody species by sheep and cattle is fundamental to the proper management of these systems to preserve their functionality and productivity. This review examines recent research in grassland-shrub-forest systems in order to report on the current understanding of the grassland-tree/shrub-animal interactions and to propose possible areas of further study.

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Section: Alcance Y Tópicosunclassified

Factores que influyen en la utilización de especies leñosas por bovinos y ovinos en sistemas pastoriles

Wentzel¹,

Alonso²

2020

agrosur

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“…In both continents, negative effects of browsing on restoration plantings and regeneration of seedlings have been identified (Motta 1996, Partl et al 2002. In the southern hemisphere, some studies have been set in the temperate forests of Chile and Argentina, where domestic (Echevarría et al 2014), native (Rebertus et al 1997, Martínez Pastur et al 1999, Cavieres & Fajardo 2005, Promis et al 2010, Puig et al 2014, and different types of browsers (Grosse 2001, Collado et al 2008 were considered. However, most of the research on browsing in these forests has been done focusing on introduced-wild species (e.g.…”

Section: Browsing Evidence Of the Native And Near-threatened Pudu Pudmentioning

confidence: 99%

“…For North America ( Côté et al 2004, White 2012) and other parts of the world ( Echevarría et al 2014, Clasen et al 2015, Sweetapple et al 2016, browsing behavior and effects of browsing on tree species (e.g. changes in shape or decelerated growth) have been studied fairly well.…”

Section: Browsing Evidence Of the Native And Near-threatened Pudu Pudmentioning

confidence: 99%

Browsing evidence of the native and near-threatened Pudu puda deer in restoration plantings on Chiloé Island, Chile

Burger

Bannister²,

Galindo³

et al. 2019

Gayana Bot.

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Evidencia de ramoneo por el ciervo nativo y casi amenazado Pudu puda en plantaciones de restauración en la Isla de Chiloé, Chile ABSTRACT Few studies have focused on the actual extent and spatial patterns of browsing in relation to forest restoration, especially when browsing is done by deer with conservation status. Here, we present data from three forest restoration experiments located in priority forests for restoration in Chiloé Island in Chile. The aim of this study is to report evidence of browsing of the southern pudu (Pudu puda), a native and Near Threatened deer species. We visually assessed browsing for all individual seedlings and calculated the average browsing extent per plot and treatment. Since pudus as well as other deer species are known to preferably feed in open spaces, we hypothesized that Pilgerodendron uviferum planted seedlings will present higher browsing rates in places with lower shrub cover (bogs) and canopy cover (upland areas) (H1). In the case of degraded North-Patagonian forests we hypothesized that Nothofagus nitida planted seedlings will present higher browsing rates in places with higher %PPFD (Photosynthetic Photon Flux Density) and/or lower residual basal area (H2). Our results indicate that browsing ranged from 9.3% up to 84.0% depending on tree species and site condition. In burned forests, browsing was significantly higher (p < 0.01) when shrubs were removed (84.0% ± 9.9) than by retaining them (68.9% ± 11.6). In degraded old-growth forests, we found significantly higher browsing in places with higher degradation (p < 0.05). Furthermore, %PPFD was significantly correlated with browsing (rho: 0.535; p < 0.01). Based on our results, forest restoration efforts in Chiloé Island will face a great challenge in balancing the protection of Near Threatened wildlife and the restoration of tree species with conservation problems, especially in open/disturbed areas, where higher browsing was found. KEYWORDS:Chile, forest management, forest restoration, herbivory, southern pudu. RESUMENEscasos estudios han relacionado el ramoneo nativo, sus patrones espaciales y su relación con la restauración de bosques, especialmente cuando el ramoneo es realizado por especies en categorías de conservación. En este estudio presentamos evidencia de ramoneo de pudú (Pudu puda) en tres experimentos de restauración de bosques ubicados en bosques prioritarios para la restauración en la Isla de Chiloé, Chile. La presencia de ramoneo fue visualmente evaluada en todas las plantas establecidas en los experimentos y se calculó la tasa media de ramoneo por unidad experimental y tratamiento. Los pudúes son conocidos por preferir espacios abiertos, por lo que se plantean las siguientes hipótesis: En bosques quemados de Pilgerodendron uviferum, las plántulas establecidas presentarán tasas de ramoneo más altas en lugares con una cubierta de arbustos y árboles más baja (H1); y en bosques adultos siempreverdes degradados las plántulas establecidas presentarán mayores tasas de ramoneo en lugares con mayor iluminación...

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“…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%

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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Efecto del ramoneo bovino en renovales de Nothofagus antarctica en Chubut, Argentina, en relación con la carga ganadera y la altura de la plantas

Cited by 19 publications

References 22 publications

Factores que influyen en la utilización de especies leñosas por bovinos y ovinos en sistemas pastoriles

Factores que influyen en la utilización de especies leñosas por bovinos y ovinos en sistemas pastoriles

Browsing evidence of the native and near-threatened Pudu puda deer in restoration plantings on Chiloé Island, Chile

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

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