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Yamina Micaela Rosas
Laboratorio de Recursos Agroforestales, Centro Austral de Investigaciones Científicas (CADIC CONICET), Ushuaia 9410, Argentina

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Journal article
Published: 30 July 2021 in Sustainability
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In Southern Patagonia, grasslands are the principal food resource for sheep reared for meat and wool as the main provisioning ecosystem services (ES). The main objective of this study was to model lamb and wool production as provisioning ES at a regional scale using climatic, topographic, and vegetation variables from sheep farms across Santa Cruz province. At a regional level, animal yield ranged from 0.25 to 0.69 g lamb/m2/yr and 0.10 to 0.19 g greasy wool/m2/yr. We used multiple regression models to produce maps of lamb and wool provisioning ES across Santa Cruz province. The model for variation of lamb production explained 96% of the variance in the data and the most significant predictor variables were temperature seasonality, normalized vegetation index (NVDI, dimensionless), and desertification index. The most important variables for the model of greasy wool production were isothermality, temperature seasonality, and NVDI, which together explained 98% of the variance. The lowest CF values of both products (lamb and wool) were located in more productive grasslands. There were differences in lamb and wool production across vegetation types with the highest values being located in more productive grasslands (0.51 g lamb/m2/yr in Nothofagus antarctica forest and 0.15 g greasy wool/m2/yr in Magellanic grass steppe and N. antarctica). Lamb and greasy wool yields decreased with desertification gradient due to erosion processes. The main limitation of the model is related to the data availability at landscape level, which must be improved in future studies by accounting for soil type, fertility, and soil water content. The results of lamb and wool production found in the present work assist in characterizing the provisioning ES ecosystem of livestock products in Southern Patagonia. The successful management of livestock becomes an important challenge to the commercial and policy communities to satisfy society’s need for food and wool products under sustainable grassland management.

ACS Style

Pablo Peri; Yamina Rosas; Emilio Rivera; Guillermo Pastur. Lamb and Wool Provisioning Ecosystem Services in Southern Patagonia. Sustainability 2021, 13, 8544 .

AMA Style

Pablo Peri, Yamina Rosas, Emilio Rivera, Guillermo Pastur. Lamb and Wool Provisioning Ecosystem Services in Southern Patagonia. Sustainability. 2021; 13 (15):8544.

Chicago/Turabian Style

Pablo Peri; Yamina Rosas; Emilio Rivera; Guillermo Pastur. 2021. "Lamb and Wool Provisioning Ecosystem Services in Southern Patagonia." Sustainability 13, no. 15: 8544.

Journal article
Published: 06 July 2021 in Sustainability
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North American beavers (Castor canadensis) are responsible for the major changes in the Tierra del Fuego Archipelago, altering riparian forests for the long-term. Passive restoration of the areas affected was ineffective in the medium-term (up to 20 years), being necessary active strategies. Plantations in abandoned ponds were made with Nothofagus pumilio and N. antarctica tree species across Tierra del Fuego island (Argentina). In the first experiment, we analysed the influence of biotic and abiotic factors in three micro-habitats in the impacted areas: front and tail of ponds, and cut not-flooded forest areas. Five-years-old N. pumilio seedlings had 39% survival in front, 21% in tails, and 46% in cut areas at year-3 of the restoration experiments, being negatively influenced by plant cover and soil moisture. Lower growth was recorded during year-1 (0.7–0.9 cm yr−1), but increased on time (1.9 cm yr−1 front, 1.6 cm yr−1 tail, 4.3 cm yr−1 cut areas). A second experiment explores the alternative to substitute the tree species to face the harder conditions of the impact and climate change. For this, we conducted a new plantation at four locations across the main bioclimatic zones, where 10–40 cm N. antarctica plants attained 17% survival in meadows (front and tail) and 30% in cut areas, being higher with larger than smaller plants (25% vs. 18%), and where they are mainly influenced by rainfall (4% in sites 400 mm yr−1). The main damage was detected in the above-ground biomass due to dryness, but root survival allowed the emergence of new shoots in the following growing season. It is necessary to monitor different Nothofagus species across natural environments in the landscape to determine the feasibility and effectiveness of different strategies in restoration plans, considering the selection of climate-resilient tree species.

ACS Style

Guillermo Pastur; Juan Cellini; María Lencinas; Yamina Rosas; Jonathan Henn; Pablo Peri. Landscape Variables Influence over Active Restoration Strategies of Nothofagus Forests Degraded by Invasive Castor canadensis in Tierra del Fuego. Sustainability 2021, 13, 7541 .

AMA Style

Guillermo Pastur, Juan Cellini, María Lencinas, Yamina Rosas, Jonathan Henn, Pablo Peri. Landscape Variables Influence over Active Restoration Strategies of Nothofagus Forests Degraded by Invasive Castor canadensis in Tierra del Fuego. Sustainability. 2021; 13 (14):7541.

Chicago/Turabian Style

Guillermo Pastur; Juan Cellini; María Lencinas; Yamina Rosas; Jonathan Henn; Pablo Peri. 2021. "Landscape Variables Influence over Active Restoration Strategies of Nothofagus Forests Degraded by Invasive Castor canadensis in Tierra del Fuego." Sustainability 13, no. 14: 7541.

Chapter
Published: 30 April 2021 in Natural and Social Sciences of Patagonia
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Provisioning ecosystem services play an important role in the development of regional economies. Traditional managements usually intensify the supply of provisioning services, without consideration of other services (e.g. cultural and supporting) and biodiversity. The objective of this chapter was to characterize main provisioning ecosystem services and potential biodiversity in different terrestrial ecosystems (native forests, shrublands and grasslands) of Santa Cruz Province (Southern Patagonia, Argentina) and to identify potential trade-off areas between provisioning ecosystem services and biodiversity conservation values. We found that non-forested areas exhibited higher supply of provisioning ecosystem services and biodiversity values than forested areas, where potential trade-off areas were located in humid steppes and shrublands. Particularly, in Nothofagus forests landscape, provisioning ecosystem services and biodiversity increased with forest cover, where N. antarctica forests type showed more potential trade-off areas than other Nothofagus forests type, while new potential protected areas were located when different forest types were combined (N. antarctica and N. pumilio). These results can be used by decision-makers to improve management and conservation strategies on private lands.

ACS Style

Yamina Micaela Rosas; Pablo L. Peri; Guillermo Martínez Pastur. Assessment of Provisioning Ecosystem Services in Terrestrial Ecosystems of Santa Cruz Province, Argentina. Natural and Social Sciences of Patagonia 2021, 19 -46.

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, Guillermo Martínez Pastur. Assessment of Provisioning Ecosystem Services in Terrestrial Ecosystems of Santa Cruz Province, Argentina. Natural and Social Sciences of Patagonia. 2021; ():19-46.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; Guillermo Martínez Pastur. 2021. "Assessment of Provisioning Ecosystem Services in Terrestrial Ecosystems of Santa Cruz Province, Argentina." Natural and Social Sciences of Patagonia , no. : 19-46.

Journal article
Published: 15 December 2020 in Journal for Nature Conservation
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Understanding human influence on ecosystems and their services is crucial to achieve sustainable development and ensure the conservation of biodiversity. In this context, the human footprint index (HFI) represents the anthropogenic impacts on ecosystems and the natural environment. Our objective was to characterize the HFI in Southern Patagonia (Argentina) across the landscape, qualifying the differences among the main ecological areas and especially the forested landscapes. We also assessed the potential utility of HFI to identify priority conservation areas according to their wilderness quality and potential biodiversity values. We created a HFI map (scores varied from 0 representing high wilderness quality to 1 representing maximum human impact) using variables related to direct (e.g. infrastructure) and indirect (e.g. derived from economic activities) human impacts, including settlements, accessibility, oil industry, and sheep production. HFI varied significantly across the natural landscapes, being lower (0.07−0.11) in remote ecosystems close to the Andes Mountains and higher (0.38−0.40) in southern areas close to the provincial capital city. Forested landscapes presented different impact values, which were directly related to the economical values of the different forest types. We determined that the current protected area network is not equally distributed across the different ecological areas and forest types. Priority conservation areas were also identified using the fragmentation produced by the human impact, the patch size, and the potential biodiversity values. HFI can present high compatibility with other land-use management decision making tools, acting as a complement to the existing tools for conservation planning or management.

ACS Style

Yamina Micaela Rosas; Pablo L. Peri; Anna M. Pidgeon; Natalia Politi; Julieta Pedrana; Ricardo Díaz-Delgado; Guillermo Martínez Pastur. Human footprint defining conservation strategies in Patagonian landscapes: Where we are and where we want to go? Journal for Nature Conservation 2020, 59, 125946 .

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, Anna M. Pidgeon, Natalia Politi, Julieta Pedrana, Ricardo Díaz-Delgado, Guillermo Martínez Pastur. Human footprint defining conservation strategies in Patagonian landscapes: Where we are and where we want to go? Journal for Nature Conservation. 2020; 59 ():125946.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; Anna M. Pidgeon; Natalia Politi; Julieta Pedrana; Ricardo Díaz-Delgado; Guillermo Martínez Pastur. 2020. "Human footprint defining conservation strategies in Patagonian landscapes: Where we are and where we want to go?" Journal for Nature Conservation 59, no. : 125946.

Chapter
Published: 09 October 2020 in Soil and Recycling Management in the Anthropocene Era
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The role of biodiversity in natural forests is critical as a regulator of ecosystem function, productivity, and provision of ecosystem services. The objective was to analyse the conservation value of Nothofagus forests in Southern Patagonia (Santa Cruz and Tierra del Fuego provinces), Argentina, through integration of maps of potential biodiversity (MPB) and human footprint (HFM), which can help to improve the natural reserve designs through the spatial prioritization of their conservation values. To achieve the, first we determine that the different forest types presented different species assemblage with specific ecological niche requirements which justify differential conservation or management strategies. We used understory plants as proxy, and we selected indicator species of the understory plants for the following analyses. With these species we produce the MPB, and we found that the occurrence of MPB differ from the pattern of HFM according to the different forest types. After that, we identify woodland patches with special values of MPB and low HFM according to the different forest types, and analyzed if the distribution of MPB of the different forest types changed across the current natural protected reserve network, private and public lands. Finally, with these outputs, we propose new methodologies to enhance the current natural reserve network effectiveness. These outputs can be used as a tool to determine new strategies for management and conservation at landscape level in Southern Patagonia.

ACS Style

Yamina Micaela Rosas; Pablo L. Peri; Josela Carrasco; María Lencinas; Anna M. Pidgeon; Natalia Politi; Sebastián Martinuzzi; Guillermo Martínez Pastur. Improving Potential Biodiversity and Human Footprint in Nothofagus Forests of Southern Patagonia through the Spatial Prioritization of their Conservation Values. Soil and Recycling Management in the Anthropocene Era 2020, 441 -471.

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, Josela Carrasco, María Lencinas, Anna M. Pidgeon, Natalia Politi, Sebastián Martinuzzi, Guillermo Martínez Pastur. Improving Potential Biodiversity and Human Footprint in Nothofagus Forests of Southern Patagonia through the Spatial Prioritization of their Conservation Values. Soil and Recycling Management in the Anthropocene Era. 2020; ():441-471.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; Josela Carrasco; María Lencinas; Anna M. Pidgeon; Natalia Politi; Sebastián Martinuzzi; Guillermo Martínez Pastur. 2020. "Improving Potential Biodiversity and Human Footprint in Nothofagus Forests of Southern Patagonia through the Spatial Prioritization of their Conservation Values." Soil and Recycling Management in the Anthropocene Era , no. : 441-471.

Original paper
Published: 25 September 2020 in Biodiversity and Conservation
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Usually, stands with aging trees are considered forests with higher conservation values, regardless their structural diversity and other functional attributes. Natural stands present a wide range of age structures, from even-aged stands growing at different development growth phases (e.g. CO = stands at initial or final optimum development growth phase, MD = stands at mature or decaying development growth phases) to uneven-aged stands with mixed development growth phases (e.g. UOG = stands combining mature or decaying development growth phases with initial or final optimum development growth phases, UMD = stands combining only mature and decaying development growth phases). The aim of this work was to compare richness and cover of understory vascular plants of even- and uneven-aged stands of Nothofagus antarctica (ñire) forests in Tierra del Fuego (Argentina), and relate these characteristics with abiotic, soil and forest structure variables. A total of 75 stands were sampled across the natural range distribution of the forests, where understory (point intercept method), forest structure (angle count sampling and eye-fish photos) and environmental (soil) variables were measured. 17 one-way ANOVAs were conducted using Tukey test at p < 0.05 to compare the means. Among forest structure and environmental variables, cover (F = 4.3, p = 0.007), radiation (F = 4.4, p = 0.006), phosphorous (F = 3.9, p = 0.012), tree density (F = 10.3, p < 0.001), tree diameter (F = 10.3, p < 0.001) and stand growth (F = 4.9, p = 0.004) showed significant differences, and in general with a positive or negative trend across the MD—UMD—UOG—CO gradient. Total (F = 6.5, p < 0.001) and native species richness of the understory (F = 7.2, p < 0.001) were significantly different among forest types, where UMD > UOG > MD > CO (17–28 total, and 13–24 native species, respectively). Neither exotic species richness (4–5 species) nor understory cover significantly changed among treatments (total, dicots, ferns and bryophytes). However, monocots cover significantly differed among treatments (F = 3.9, p = 0.012), where UMD > MD > UOG > CO. Finally, indicator species cover for environmental degradation did not present significant differences (F = 2.1, p = 0.106), but they were positive related to forests growing in mature stages. We concluded that uneven-aged stands presented significantly higher conservation values compared to even-aged stands, where mature/decay stands have better conservation values than optimum growth development phases. These findings can be used for better silviculture practices that combine silvopastoral use and conservation strategies.

ACS Style

Guillermo J. Martínez Pastur; Yamina M. Rosas; Juan M. Cellini; Marcelo D. Barrera; Mónica Toro Manríquez; Alejandro Huertas Herrera; Santiago Favoretti Bondar; María V. Lencinas; Pablo L. Peri. Conservation values of understory vascular plants in even- and uneven-aged Nothofagus antarctica forests. Biodiversity and Conservation 2020, 1 -23.

AMA Style

Guillermo J. Martínez Pastur, Yamina M. Rosas, Juan M. Cellini, Marcelo D. Barrera, Mónica Toro Manríquez, Alejandro Huertas Herrera, Santiago Favoretti Bondar, María V. Lencinas, Pablo L. Peri. Conservation values of understory vascular plants in even- and uneven-aged Nothofagus antarctica forests. Biodiversity and Conservation. 2020; ():1-23.

Chicago/Turabian Style

Guillermo J. Martínez Pastur; Yamina M. Rosas; Juan M. Cellini; Marcelo D. Barrera; Mónica Toro Manríquez; Alejandro Huertas Herrera; Santiago Favoretti Bondar; María V. Lencinas; Pablo L. Peri. 2020. "Conservation values of understory vascular plants in even- and uneven-aged Nothofagus antarctica forests." Biodiversity and Conservation , no. : 1-23.

Journal article
Published: 11 April 2020 in Sustainability
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Natural steppe grasslands are the principal food resource for sheep in the Patagonia region, reared for meat and wool. However, there is currently a concern about the relationship between ruminant livestock and climate change due to its contribution to anthropogenic greenhouse gas (GHG) emissions. The objective of this study was to determine the carbon footprints (CF) of sheep meat (lamb) and wool on a range of farms using empirical data collected on farm and then upscaled to the regional scale using models that use topographic, climatic, and vegetation indices as independent variables. At the regional level, the total CF of lamb and wool (the combination of emissions produced on farm, via transport, and via industrial processing) varied from 10.64 to 41.32 kg CO2-eq/kg for lamb meat (carcass) and from 7.83 to 18.70 kg CO2-eq/kg for fine-grade wool. For both, the predominant contribution was from primary production on-farm (75–90%), followed by industrial processing (2–15%), and transportation. We used multiple regression models to produce maps of lamb and wool CF at farm gate across Santa Cruz province. The model for variation of lamb CF explained 95% of the variance on the data and the most significant predictor variables were temperature seasonality and normalized difference vegetation index (NDVI, dimensionless). The most important variables for the model of CF of greasy wool production at farm gate were isothermality, temperature seasonality, and NDVI explained 98%. The lowest CF values of both products (lamb and wool) were located in more productive grasslands. The successful management of livestock GHG emissions becomes an important challenge to the scientific, commercial, and policy communities. The results of CF for lamb and wool production found in the present work assist in characterizing the greenhouse gas emissions profile of livestock products in Southern Patagonia by providing a baseline against which mitigation actions can be planned and progress monitored.

ACS Style

Pablo L. Peri; Yamina M. Rosas; Brenton Ladd; Ricardo Díaz-Delgado; Guillermo José Martínez Pastur. Carbon Footprint of Lamb and Wool Production at Farm Gate and the Regional Scale in Southern Patagonia. Sustainability 2020, 12, 3077 .

AMA Style

Pablo L. Peri, Yamina M. Rosas, Brenton Ladd, Ricardo Díaz-Delgado, Guillermo José Martínez Pastur. Carbon Footprint of Lamb and Wool Production at Farm Gate and the Regional Scale in Southern Patagonia. Sustainability. 2020; 12 (8):3077.

Chicago/Turabian Style

Pablo L. Peri; Yamina M. Rosas; Brenton Ladd; Ricardo Díaz-Delgado; Guillermo José Martínez Pastur. 2020. "Carbon Footprint of Lamb and Wool Production at Farm Gate and the Regional Scale in Southern Patagonia." Sustainability 12, no. 8: 3077.

Journal article
Published: 01 April 2020 in Bosque (Valdivia)
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El método de regeneración más aplicado en bosques de Nothofagus pumilio (lenga) es la corta de protección. Este tratamiento se implementó sin consideración del paisaje o gradientes de productividad (ej. calidad de sitio), restricciones ambientales (ej. humedad del suelo) o factores de disturbio (ej. viento). El objetivo fue evaluar la dinámica de la estructura forestal remanente y la respuesta de la regeneración luego de 10 años de cosecha en el paisaje considerando gradientes ambientales. Se establecieron parcelas en nueve rodales en distintos sectores de Tierra del Fuego, Argentina (norte, este y sur) donde se concentra la actividad forestal. Las zonas seleccionadas presentan diferencias en el régimen hídrico (402 a 446 mm año-1) y calidades de sitio (2,6 a 3,3). La estructura forestal fue similar entre zonas, pero las intensidades de corta fue variable (30% a 57%) generando diferentes áreas basales (AB) remanentes (22 a 47 m2 ha-1) y residuos forestales (167 a 230 m3 ha-1) luego de la cosecha o por volteos de viento. La estructura forestal actual presenta diferencias en AB (6 a 34 m2 ha-1) y regeneración instalada (49 a 110 miles ha-1) variando en altura (0,6 a 1,0 m) y crecimiento (4,1 a 12,8 cm año-1) por zona y daños recibidos (abióticos y bióticos). Concluimos que los bosques responden diferencialmente a los tratamientos silvícola en los paisajes y gradientes ambientales analizados, donde el clima influye en la estabilidad del dosel y la regeneración. En consecuencia, se hace necesario establecer estrategias silvícolas diferenciales a lo largo del paisaje.

ACS Style

Dardo Paredes; Juan Manuel Cellini; María Lencinas; Martin Parodi; Daniel Quiroz; Javier Ojeda; Sebastian Farina; Yamina Micaela Rosas; Guillermo Martínez Pastur. Influencia del paisaje en las cortas de protección en bosques de Nothofagus pumilio en Tierra del Fuego, Argentina: Cambios en la estructura forestal y respuesta de la regeneración. Bosque (Valdivia) 2020, 41, 55 -64.

AMA Style

Dardo Paredes, Juan Manuel Cellini, María Lencinas, Martin Parodi, Daniel Quiroz, Javier Ojeda, Sebastian Farina, Yamina Micaela Rosas, Guillermo Martínez Pastur. Influencia del paisaje en las cortas de protección en bosques de Nothofagus pumilio en Tierra del Fuego, Argentina: Cambios en la estructura forestal y respuesta de la regeneración. Bosque (Valdivia). 2020; 41 (1):55-64.

Chicago/Turabian Style

Dardo Paredes; Juan Manuel Cellini; María Lencinas; Martin Parodi; Daniel Quiroz; Javier Ojeda; Sebastian Farina; Yamina Micaela Rosas; Guillermo Martínez Pastur. 2020. "Influencia del paisaje en las cortas de protección en bosques de Nothofagus pumilio en Tierra del Fuego, Argentina: Cambios en la estructura forestal y respuesta de la regeneración." Bosque (Valdivia) 41, no. 1: 55-64.

Book chapter
Published: 26 November 2019 in Managing soil health for sustainable agriculture Volume 1
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ACS Style

Yamina Micaela Rosas; Centro Austral De Investigaciones Científicas (Cadic) Laboratorio De Recursos Agroforestales; Pablo Luis Peri; Héctor Bahamonde; Juan Manuel Cellini; Marcelo Daniel Barrera; Alejandro Huertas Herrera; María Vanessa Lencinas; Guillermo Martínez Pastur; Universidad Nacional De La Patagonia Austral (Unpa) Instituto Nacional De Tecnología Agropecuaria (Inta); Argentina Universidad Nacional De La Plata (Unlp). Trade-offs between management and conservation for the provision of ecosystem services in the southern Patagonian forests. Managing soil health for sustainable agriculture Volume 1 2019, 177 -210.

AMA Style

Yamina Micaela Rosas, Centro Austral De Investigaciones Científicas (Cadic) Laboratorio De Recursos Agroforestales, Pablo Luis Peri, Héctor Bahamonde, Juan Manuel Cellini, Marcelo Daniel Barrera, Alejandro Huertas Herrera, María Vanessa Lencinas, Guillermo Martínez Pastur, Universidad Nacional De La Patagonia Austral (Unpa) Instituto Nacional De Tecnología Agropecuaria (Inta), Argentina Universidad Nacional De La Plata (Unlp). Trade-offs between management and conservation for the provision of ecosystem services in the southern Patagonian forests. Managing soil health for sustainable agriculture Volume 1. 2019; ():177-210.

Chicago/Turabian Style

Yamina Micaela Rosas; Centro Austral De Investigaciones Científicas (Cadic) Laboratorio De Recursos Agroforestales; Pablo Luis Peri; Héctor Bahamonde; Juan Manuel Cellini; Marcelo Daniel Barrera; Alejandro Huertas Herrera; María Vanessa Lencinas; Guillermo Martínez Pastur; Universidad Nacional De La Patagonia Austral (Unpa) Instituto Nacional De Tecnología Agropecuaria (Inta); Argentina Universidad Nacional De La Plata (Unlp). 2019. "Trade-offs between management and conservation for the provision of ecosystem services in the southern Patagonian forests." Managing soil health for sustainable agriculture Volume 1 , no. : 177-210.

Original paper
Published: 23 July 2019 in Journal of Insect Conservation
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Different methodologies had been developed for species management and conservation based on modelling of potential biodiversity at regional scales. However, most of these models were fitted for umbrella species (e.g. big mammals) rather than micro-fauna. Beetles should be included to improve conservation strategies due to their functional roles and vulnerability in arid environments. The maps of potential biodiversity (MPB) based on different potential habitat suitability (PHS) maps are useful to indicate high biodiversity areas. Firstly, we aim to elaborate a MPB of darkling beetles (Coleoptera: Tenebrionidae) based on 10 species PHS maps inhabiting Santa Cruz Province (Argentina). Then, we analysed the MPB an environmental gradients and land-use variables. We explored 41 potential variables to develop PHS maps. The MPB was included into a GIS project, and was analysed considering climatic and topographic variables, ecological areas and soil organic carbon (SOC) stock, also sheep density, desertification and protected area network. The modelled showed great variability in their habitat requirements (e.g. temperature), where marginality (PHS differs from the available conditions) and specialization (environmental condition range of PHS) determined three species groups. MPB increased from grasslands in the NE to shrublands in the SE, and was higher with SOC, sheep density and desertification degree. Protection areas included lower MPB for darkling beetles, where provincial reserves have a major conservation role compared with national parks. MPB allowed us to understand the potential trade-offs with the environment and human uses. This gave us a tool to development new strategies (e.g. land-sparing) for management and conservation.

ACS Style

Yamina Micaela Rosas; Pablo L. Peri; Rodolfo Carrara; Gustavo E. Flores; Julieta Pedrana; Guillermo Martínez Pastur. Potential biodiversity map of darkling beetles (Tenebrionidae): environmental characterization, land-uses and analyses of protection areas in Southern Patagonia. Journal of Insect Conservation 2019, 23, 885 -897.

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, Rodolfo Carrara, Gustavo E. Flores, Julieta Pedrana, Guillermo Martínez Pastur. Potential biodiversity map of darkling beetles (Tenebrionidae): environmental characterization, land-uses and analyses of protection areas in Southern Patagonia. Journal of Insect Conservation. 2019; 23 (5-6):885-897.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; Rodolfo Carrara; Gustavo E. Flores; Julieta Pedrana; Guillermo Martínez Pastur. 2019. "Potential biodiversity map of darkling beetles (Tenebrionidae): environmental characterization, land-uses and analyses of protection areas in Southern Patagonia." Journal of Insect Conservation 23, no. 5-6: 885-897.

Review
Published: 01 July 2019 in Ecological Processes
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Nothofagus pumilio forests in Tierra del Fuego are the southernmost forests in the world, where extreme climate conditions represent a challenge to attain sustainable forest management. Retention forestry was proposed as an alternative to increase the species conservation in managed stands. Here, we synthetized results related to the implementation of a variable retention harvesting based on a combination of aggregate patches and dispersed retention during the last 18 years comparing with other silviculture proposals (e.g., shelterwood cuts) and control treatments (primary unmanaged forests). We summarized the results for (i) sawmill operations, (ii) timber yield, (iii) overstory stability, (iv) forest structure, (v) microclimate and natural cycles, (vi) natural regeneration dynamics (flowering, seeding, foraging, recruitment, growth, and mortality), and (vii) biodiversity (mammals, understory plants, mistletoes, birds, arthropods, mosses, lichens, and fungi). In general, aggregate patches maintained forest structure and micro-environmental variables, and slightly increased biodiversity and forest reproduction variables compared to unmanaged primary forests. On the contrary, dispersed retention decreased forest structure variables and greatly increased biodiversity (richness and abundance) when it was compared to unmanaged primary forests. Ecological conditions are influenced by variable retention harvesting, but direction and magnitude of the effect depend and differ according to retention types. Besides this, biodiversity taxa greatly differed among groups depending on retention types. In general, the species assemblages in aggregate patches were similar to those found in primary unmanaged forests, while they were significantly modified in the dispersed retention. This occurred due to (i) local extinction of some original species, (ii) the introduction of native species from the surrounding environments, or (iii) the invasion of exotic species. This silvicultural method has been a useful tool to conserve biodiversity and ecosystem functions, approaching to the balance between economy, ecology, and social requirements in the managed areas.

ACS Style

Guillermo José Martínez Pastur; Yamina Micaela Rosas; Mónica Toro Manríquez; Alejandro Huertas Herrera; Juan A. Miller; Juan Manuel Cellini; Marcelo D. Barrera; Pablo L. Peri; María V. Lencinas. Knowledge arising from long-term research of variable retention harvesting in Tierra del Fuego: where do we go from here? Ecological Processes 2019, 8, 24 .

AMA Style

Guillermo José Martínez Pastur, Yamina Micaela Rosas, Mónica Toro Manríquez, Alejandro Huertas Herrera, Juan A. Miller, Juan Manuel Cellini, Marcelo D. Barrera, Pablo L. Peri, María V. Lencinas. Knowledge arising from long-term research of variable retention harvesting in Tierra del Fuego: where do we go from here? Ecological Processes. 2019; 8 (1):24.

Chicago/Turabian Style

Guillermo José Martínez Pastur; Yamina Micaela Rosas; Mónica Toro Manríquez; Alejandro Huertas Herrera; Juan A. Miller; Juan Manuel Cellini; Marcelo D. Barrera; Pablo L. Peri; María V. Lencinas. 2019. "Knowledge arising from long-term research of variable retention harvesting in Tierra del Fuego: where do we go from here?" Ecological Processes 8, no. 1: 24.

Journal article
Published: 16 May 2019 in Science of The Total Environment
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The role of understory plants in native forests is critical for ecosystem function, wildlife protection and ecosystem productivity. The interest to estimate biodiversity increased during the last decades at landscape level. The objective was to elaborate a map of potential biodiversity (MPB) of understory species of Nothofagus forest using potential habitat suitability maps (PHS) of 15 plants in Santa Cruz province, Argentina. Additionally, we asked the following questions: (i) Were plant species differentially distributed according to the forest types?, (ii) do forest types represent different plant species assemblage with specific ecological niche requirements?, and (iii) is it possible to detect hotspots in the MBP according to the forest types? We used 721 plots database of vascular plants, from where 15 indicator species were identified. The assemblage species for different forests (Nothofagus antarctica, N. pumilio and evergreen mixed) were analysed using a detrended correspondence analysis. Also, we explored 41 potential explanatory variables to develop PHS, and combined these maps to obtain one MPB (1–100%). Finally, we analysed the outputs into a GIS through different landscapes alternatives to detect hotspot areas. Marginality and specialization values allowed identifying species assemblage that presented similar variability in the habitat requirements. MPB varied across the landscape, with higher values in the south and lower values near glaciers. MPB had the highest values in N. antarctica forest with >50% cover at landscape level. N. antarctica present more hotspots than N. pumilio forests, mainly in the south, compared to mixed evergreen forests which present few hotspots near glaciers. These results can be used as a tool to design new management and conservation strategies at landscape level.

ACS Style

Yamina Micaela Rosas; Pablo L. Peri; María Lencinas; Guillermo José Martínez Pastur. Potential biodiversity map of understory plants for Nothofagus forests in Southern Patagonia: Analyses of landscape, ecological niche and conservation values. Science of The Total Environment 2019, 682, 301 -309.

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, María Lencinas, Guillermo José Martínez Pastur. Potential biodiversity map of understory plants for Nothofagus forests in Southern Patagonia: Analyses of landscape, ecological niche and conservation values. Science of The Total Environment. 2019; 682 ():301-309.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; María Lencinas; Guillermo José Martínez Pastur. 2019. "Potential biodiversity map of understory plants for Nothofagus forests in Southern Patagonia: Analyses of landscape, ecological niche and conservation values." Science of The Total Environment 682, no. : 301-309.

Journal article
Published: 13 May 2019 in Sustainability
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Soil total nitrogen (N) stock in rangelands, shrublands, and forests support key ecological functions such as the capacity of the land to sustain plant and animal productivity and ecosystem services. The objective of this study was to model soil total N stocks and soil C/N ratio from 0–30 cm depth across the region using freely accessible information on topography, climate, and vegetation with a view to establishing a baseline against which sustainable land management practices can be evaluated in Southern Patagonia. We used stepwise multiple regression to determine which independent variables best explained soil total N variation across the landscape in Southern Patagonia. We then used multiple regression models to upscale and produce maps of soil total N and C/N across the Santa Cruz province. Soil total N stock to 30 cm ranged from 0.13 to 2.21 kg N m−2, and soil C/N ratios ranged from 4.5 to 26.8. The model for variation of soil total N stock explained 88% of the variance on the data and the most powerful predictor variables were: isothermality, elevation, and vegetation cover (normalized difference vegetation index (NDVI)). Soil total N and soil C/N ratios were allocated to three categories (low, medium, high) and these three levels were used to map the variation of soil total N and soil C/N ratios across Southern Patagonia. The results demonstrate that soil total N decreases as desertification increases, probably due to erosional processes, and that soil C/N is lower at low temperatures and increased with increasing precipitation. Soil total N and soil C/N ratios are critical variables that determine system capacity for productivity, especially the provisioning ecosystem services, and can serve as baselines against which efforts to adopt more sustainable land management practices in Patagonia can be assessed.

ACS Style

Pablo L. Peri; Yamina M. Rosas; Brenton Ladd; Santiago Toledo; Romina G. Lasagno; Guillermo José Martínez Pastur. Modeling Soil Nitrogen Content in South Patagonia across a Climate Gradient, Vegetation Type, and Grazing. Sustainability 2019, 11, 2707 .

AMA Style

Pablo L. Peri, Yamina M. Rosas, Brenton Ladd, Santiago Toledo, Romina G. Lasagno, Guillermo José Martínez Pastur. Modeling Soil Nitrogen Content in South Patagonia across a Climate Gradient, Vegetation Type, and Grazing. Sustainability. 2019; 11 (9):2707.

Chicago/Turabian Style

Pablo L. Peri; Yamina M. Rosas; Brenton Ladd; Santiago Toledo; Romina G. Lasagno; Guillermo José Martínez Pastur. 2019. "Modeling Soil Nitrogen Content in South Patagonia across a Climate Gradient, Vegetation Type, and Grazing." Sustainability 11, no. 9: 2707.

Original paper
Published: 30 March 2018 in Annals of Forest Science
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Soil texture and temperature-related variables were the variables that most contributed to Nothofagus antarctica forest height in southern Patagonia. This information may be useful for improving forest management, for instance related to the establishment of silvopastoral systems or selection of suitable sites for forest reforestation in southern Patagonia. Changes in forest productivity result from a combination of climate, topography, and soil properties. The relative importance of edaphic and climatic variables as drivers of productivity in Nothofagus antarctica forests of southern Patagonia, Argentina, was evaluated. A total of 48 mature stands of N. antarctica were selected. For each study site, we measured the height of three mature dominant trees, as an indicator of productivity. Seven soil, five spatial, and 19 climatic features were determined and related to forest productivity. Through partial least squares regression analyses, we obtained a model that was an effective predictor of height of mature dominant trees in the regional data set presented here. The four variables that most contributed to the predictive power of the model were altitude, temperature annual range, soil texture, and temperature seasonality. The information gathered in this study suggested that the incidence of the soil and temperature-related variables on the height of dominant trees, at the regionally evaluated scale, was higher than the effect of water-related variables.

ACS Style

Héctor A. Bahamonde; Guillermo José Martínez Pastur; María Lencinas; Rosina Soler; Yamina Micaela Rosas; Brenton Ladd; Sandra Duarte Guardia; Pablo L. Peri. The relative importance of soil properties and regional climate as drivers of productivity in southern Patagonia’s Nothofagus antarctica forests. Annals of Forest Science 2018, 75, 45 .

AMA Style

Héctor A. Bahamonde, Guillermo José Martínez Pastur, María Lencinas, Rosina Soler, Yamina Micaela Rosas, Brenton Ladd, Sandra Duarte Guardia, Pablo L. Peri. The relative importance of soil properties and regional climate as drivers of productivity in southern Patagonia’s Nothofagus antarctica forests. Annals of Forest Science. 2018; 75 (2):45.

Chicago/Turabian Style

Héctor A. Bahamonde; Guillermo José Martínez Pastur; María Lencinas; Rosina Soler; Yamina Micaela Rosas; Brenton Ladd; Sandra Duarte Guardia; Pablo L. Peri. 2018. "The relative importance of soil properties and regional climate as drivers of productivity in southern Patagonia’s Nothofagus antarctica forests." Annals of Forest Science 75, no. 2: 45.

Journal article
Published: 08 February 2018 in Sustainability
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In Southern Patagonia, a long-term monitoring network has been established to assess bio-indicators as an early warning of environmental changes due to climate change and human activities. Soil organic carbon (SOC) content in rangelands provides a range of important ecosystem services and supports the capacity of the land to sustain plant and animal productivity. The objectives in this study were to model SOC (30 cm) stocks at a regional scale using climatic, topographic and vegetation variables, and to establish a baseline that can be used as an indicator of rangeland condition. For modelling, we used a stepwise multiple regression to identify variables that explain SOC variation at the landscape scale. With the SOC model, we obtained a SOC map for the entire Santa Cruz province, where the variables derived from the multiple linear regression models were integrated into a geographic information system (GIS). SOC stock to 30 cm ranged from 1.38 to 32.63 kg C m−2. The fitted model explained 76.4% of SOC variation using as independent variables isothermality, precipitation seasonality and vegetation cover expressed as a normalized difference vegetation index. The SOC map discriminated in three categories (low, medium, high) determined patterns among environmental and land use variables. For example, SOC decreased with desertification due to erosion processes. The understanding and mapping of SOC in Patagonia contributes as a bridge across main issues such as climate change, desertification and biodiversity conservation.

ACS Style

Pablo Luis Peri; Yamina Micaela Rosas; Brenton Ladd; Santiago Toledo; Romina Gisele Lasagno; Guillermo José Martínez Pastur. Modelling Soil Carbon Content in South Patagonia and Evaluating Changes According to Climate, Vegetation, Desertification and Grazing. Sustainability 2018, 10, 438 .

AMA Style

Pablo Luis Peri, Yamina Micaela Rosas, Brenton Ladd, Santiago Toledo, Romina Gisele Lasagno, Guillermo José Martínez Pastur. Modelling Soil Carbon Content in South Patagonia and Evaluating Changes According to Climate, Vegetation, Desertification and Grazing. Sustainability. 2018; 10 (2):438.

Chicago/Turabian Style

Pablo Luis Peri; Yamina Micaela Rosas; Brenton Ladd; Santiago Toledo; Romina Gisele Lasagno; Guillermo José Martínez Pastur. 2018. "Modelling Soil Carbon Content in South Patagonia and Evaluating Changes According to Climate, Vegetation, Desertification and Grazing." Sustainability 10, no. 2: 438.

Research article
Published: 01 January 2018 in Amphibia-Reptilia
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The distribution of biodiversity at the landscape level is shaped by biotic, abiotic and anthropogenic factors. Biodiversity maps provide the basis for defining management and conservation strategies that can minimize human impacts. The objective was to elaborate a map of potential biodiversity of lizards based on habitat suitability maps of individual species in Santa Cruz (Argentina). Also, we analysed desertification influence and the representativeness of the current network of protected areas on the lizard biodiversity. For this, we used a database of eight lizard species and we explored 41 potential explanatory variables to develop habitat suitability maps, which were combined to obtain one single map of the potential biodiversity. We analysed the outputs in a GIS project using the marginality and the specialization indexes and the normalized difference vegetation index of each species. Also, we characterized the potential biodiversity using the following variables: desertification, ecological areas and current network of protected areas. We detected differences in the occupied niches for the different species throughout the landscape. The map of potential biodiversity uncovered hotspots of biodiversity in the north-east study area, where the prevalence of unique climatic conditions showed a dry steppe and a high degree of desertification due to the human impacts (e.g. livestock). These results can be readily used as a support system for conservation and management strategies at different scale levels in areas with higher human impacts or to develop new protection areas.

ACS Style

Yamina Micaela Rosas; Pablo Luis Peri; Guillermo Martínez Pastur. Potential biodiversity map of lizard species in Southern Patagonia: environmental characterization, desertification influence and analyses of protection areas. Amphibia-Reptilia 2018, 39, 289 -301.

AMA Style

Yamina Micaela Rosas, Pablo Luis Peri, Guillermo Martínez Pastur. Potential biodiversity map of lizard species in Southern Patagonia: environmental characterization, desertification influence and analyses of protection areas. Amphibia-Reptilia. 2018; 39 (3):289-301.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo Luis Peri; Guillermo Martínez Pastur. 2018. "Potential biodiversity map of lizard species in Southern Patagonia: environmental characterization, desertification influence and analyses of protection areas." Amphibia-Reptilia 39, no. 3: 289-301.

Journal article
Published: 17 August 2017 in Ecological Processes
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Yamina Micaela Rosas; Pablo L. Peri; Alejandro Huertas Herrera; Hernán Pastore; Guillermo José Martínez Pastur. Modeling of potential habitat suitability of Hippocamelus bisulcus: effectiveness of a protected areas network in Southern Patagonia. Ecological Processes 2017, 6, 1 .

AMA Style

Yamina Micaela Rosas, Pablo L. Peri, Alejandro Huertas Herrera, Hernán Pastore, Guillermo José Martínez Pastur. Modeling of potential habitat suitability of Hippocamelus bisulcus: effectiveness of a protected areas network in Southern Patagonia. Ecological Processes. 2017; 6 (1):1.

Chicago/Turabian Style

Yamina Micaela Rosas; Pablo L. Peri; Alejandro Huertas Herrera; Hernán Pastore; Guillermo José Martínez Pastur. 2017. "Modeling of potential habitat suitability of Hippocamelus bisulcus: effectiveness of a protected areas network in Southern Patagonia." Ecological Processes 6, no. 1: 1.

Journal article
Published: 11 April 2017 in International Journal of Biodiversity Science, Ecosystem Services & Management
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ACS Style

Pablo Luis Peri; Dardo Rubén López; Verónica Rusch; Graciela Rusch; Yamina Micaela Rosas; Guillermo José Martínez Pastur. State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience. International Journal of Biodiversity Science, Ecosystem Services & Management 2017, 13, 105 -118.

AMA Style

Pablo Luis Peri, Dardo Rubén López, Verónica Rusch, Graciela Rusch, Yamina Micaela Rosas, Guillermo José Martínez Pastur. State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience. International Journal of Biodiversity Science, Ecosystem Services & Management. 2017; 13 (2):105-118.

Chicago/Turabian Style

Pablo Luis Peri; Dardo Rubén López; Verónica Rusch; Graciela Rusch; Yamina Micaela Rosas; Guillermo José Martínez Pastur. 2017. "State and transition model approach in native forests of Southern Patagonia (Argentina): linking ecosystem services, thresholds and resilience." International Journal of Biodiversity Science, Ecosystem Services & Management 13, no. 2: 105-118.