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Mostrando ítems 1-20 de 57
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A functional classification of 63 common Poaceae in the “Campos” grasslands of South America
(Asociación Argentina de Ecología, 2019-08)The natural grasslands that form part of the “Campos” of South America contain a large number of species at the paddock level (high α diversity), but little differentiation among paddocks (low β diversity). Thus, forage ... -
Are Patagonia grasslands being overgrazed? A response to Marino et al. (2020)
(Wiley, 2020-09)Based upon primary productivity estimates, Oliva et al. (2019) concluded that, at the end of last century and after long periods of overgrazing, Patagonia's domestic stocks adjusted to regional‐scale herbivore carrying ... -
Bird community responses to afforested eucalyptus plantations in the Argentine pampas
(2017-12)Land-use change driven by human population growth and economic activity will continue to impact both natural habitats and land currently being used for food, fiber, and fuel production. The effects of this conversion on ... -
Cambio Climático en Patagonia Sur: Escenarios futuros en el manejo de los recursos naturales
(Ediciones INTA, 2012)La biodiversidad asociada a los ecosistemas de Patagonia Sur (Santa Cruz y Tierra del Fuego) es consecuencia de una larga evolución de las especies y de la geografía misma, sin olvidar que la misma está en equilibrio con ... -
Carbon Storage in Cold Temperate Ecosystems in Southern Patagonia, Argentina.
(inTech, 2011-08)Recently there has been an increasing interest of research related to improve the understanding of carbon (C) sequestration mainly under Article 3.4 of the Kyoto Protocol of the United Nations Framework Convention on Climate ... -
Compositional variation in grassland plant communities
(Ecological Society of America, 2023-06-08)Human activities are altering ecological communities around the globe. Understanding the implications of these changes requires that we consider the composition of those communities. However, composition can be summarized ... -
Daily feeding site selection of cattle and sheep co-grazing a heterogeneous subtropical grassland
(2014-03)Effective management of livestock grazing on heterogeneous subtropical grasslands requires understanding the relative role played by factors that determine spatial distribution patterns of animals. We conducted a 2 year ... -
Differential responses of soil microorganisms to precipitation changes in austral semiarid grasslands
(Elsevier, 2023-06)Global climate models predict that precipitation regimes will change, generating great impacts on various ecosystem processes and functions. Therefore, it is important to know how drought and precipitation increases would ... -
Dominant native and non‐native graminoids differ in key leaf traits irrespective of nutrient availability
(Wiley, 2020-03-12)Nutrient enrichment is associated with plant invasions and biodiversity loss. Functional trait advantages may predict the ascendancy of invasive plants following nutrient enrichment but this is rarely tested. Here, we ... -
Ecosystem Services in Patagonia: A Multi-Criteria Approach for an Integrated Assessment
(Springer Nature, 2021-04-27)This book aims to quantify and discuss how societies have directly and indirectly benefited from ecosystem services in Patagonia; not only in terms of provisioning and cultural services, but also regulating and supporting ... -
Effect of defoliation frequency on Rytidosperma virescens plants and arbuscular mycorrhizal fungi colonization
(Elsevier, 2022-06-09)Rangelands provide different ecosystem services to satisfy human needs. Although grazing management in southern Patagonia is mostly characterized by extensive continuous grazing, rotational grazing management may improve ... -
Effects of dietary supplementation on vegetation cover and its defoliation by sheep in extensive husbandry
(Elsevier, 2022-06-06)Dietary supplementation is one of the most used strategies to reduce the effect of environmental fluctuations in arid and semi-arid environments. We evaluated changes in vegetation and in patterns of animal defoliation as ... -
Effects of High Impact Grazing on Species Diversity and Plant Functional Groups in Grasslands of Northern Argentina
(2018)High impact grazing (HIG) was proposed as a management option to reduce standing dead biomass in Northern Argentinean (Chaco) rangelands. However, the effects of HIG on grassland diversity and shifts in plant functional ... -
Environmental Conditions and Grazing Exerted Effects on Arbuscular Mycorrhizal in Plants at Southern Patagonia Rangelands
(Elsevier, 2022-03)Arbuscular mycorrhizal (AM) fungi play a major role in maintaining ecosystem functions. AM fungi are found in most ecosystems including rangelands currently under increasing pressures from human activities. Southern Patagonia ... -
Environmental heterogeneity modulates the effect of plant diversity on the spatial variability of grassland biomass
(Springer Nature, 2023-03-31)Plant productivity varies due to environmental heterogeneity, and theory suggests that plant diversity can reduce this variation. While there is strong evidence of diversity effects on temporal variability of productivity, ... -
Eucalypt plantations for forest restoration in a fire-prone mosaic of grasslands and forests in northern Argentina
(Wiley, 2021-05)In ecosystems with grassland-forest boundaries, tree plantations could be used to promote forest restoration. In the Humid Chaco region of central South America, fire is one of the main disturbances that shapes the landscape. ... -
Extreme drought impacts have been underestimated in grasslands and shrublands globally
(National Academy of Sciences (Estados Unidos), 2024-01-08)Climate change is increasing the frequency and severity of short-term (~1 y) drought events—the most common duration of drought—globally. Yet the impact of this intensification of drought on ecosystem functioning remains ... -
Foliar N⁄ P ratio and nutrient limitation to vegetation growth on Keerqin sandy grassland of North-east China.
(Wiley, 2011-02-01)To examine whether the critical leaf N ⁄ P ratios (of 14, 16) are valid to test nutrient limitation in the context of semi-arid sandy grasslands, an experiment was conducted on a Keerqin sandy grassland in North-east China ... -
General destabilizing effects of eutrophication on grassland productivity at multiple spatial scales
(Springer Nature, 2020-10-23)Eutrophication is a widespread environmental change that usually reduces the stabilizing effect of plant diversity on productivity in local communities. Whether this effect is scale dependent remains to be elucidated. Here, ... -
Glyphosate retention in grassland riparian areas is reduced by the invasion of exotic trees = La retención de glifosato en las áreas ribereñas con pastizales se reduce por la invasión de árboles exóticos
(Fundación Rómulo Raggio, 2016)In this study, we examined some aspects regarding the effect of willow trees (Salix fragilis L.) invasion of grassland riparian environments in the Argentinean Pampas on the runoff reduction, sedimentation and glyphosate ...