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Mostrando ítems 101-120 de 205
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Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
(2015-04)The Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement ... -
Heritable variation in the survival of seedlings from Patagonian cypress marginal xeric populations coping with drought and extreme cold
(Springer, 2012-01)The rear edges of tree species have begun to be perceived as highly valuable for genetic resources conservation and management. In view of expected climatic changes, the responses of trees at their xeric limits may largely ... -
Una herramienta para monitorear sequías en regiones áridas y semiáridas de Patagonia Norte
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2012-08)La variabilidad ambiental es una característica de regiones pastoriles áridas y semiáridas, siendo la sequía uno de los principales problemas en sistemas ganaderos extensivos, con implicancias productivas y económicas tanto ... -
High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
(Elsevier, 2010-03)Knowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed ... -
Higher establishment of nonnative trees with increased harvest intensity in strip cuttings
(Springer, 2024-04-23)Proper management of woody ecosystems is fundamental for human livelihoods and biodiversity conservation. Strip cutting or selective harvesting are proposed as sustainable alternatives to clear-cut logging. However, their ... -
Honeydew production by the giant willow aphid (Tuberolachnus salignus, Hemiptera: Aphididae) and its effect on foraging yellowjackets (Hymenoptera: Vespidae)
(Wiley, 2023-08)BACKGROUND: Understanding the factors that promote the success of invasive species is important for managing biological invasions. Interactions between invasives and other species (e.g. competitors, pathogens, or predators), ... -
Host genetics determines food preferences of the moth Perzelia arda (Lepidoptera: Depressariidae)
(Wiley, 2021-12)Genetic variation among host plants can influence herbivore behaviour and consequently their abundance, performance and environmental impact. In the Andean- Patagonian forest, the arboreal vegetation is dominated by species ... -
Host selection behaviour of the banded pine weevil, Pissodes castaneus (Coleoptera: Curculionidae)
(Wiley, 2023-08)Pissodes castaneus represents an emerging pest species for Pinus spp. production in Latin America. This species attacks all the cultivated pine species in Patagonia Argentina causing wood damage and tree death. The objectives ... -
Identificación del origen genético de un rodal semillero implantado de Nothofagus obliqua a través del análisis de dos regiones inter-génicas de ADN de cloroplasto
(Ediciones INTA, 2021-04)En planes de forestación, tanto con fines productivos como de conservación, la correcta elección de la fuente de semilla para utilizar es un factor clave. El área productora de semilla (APS) “Trevelin” de Nothofagus obliqua ... -
Immobilization and stabilization of volcanic ash in soil aggregates in semiarid meadows of Northern Patagonia
(Elsevier, 2021-06-15)Although volcanism may be perceived by the society as a phenomenon with mostly negative consequences, this is not always the case especially for natural systems. There is a limited knowledge on how the deposited pristine ... -
Indole-diterpenes alkaloid profiles of native grasses involved in tremorgenic syndromes in the Argentine Patagonia
(Elsevier, 2022-10-15)One of the main intoxications to livestock in the Patagonia region of Argentina is the tremorgenic disease “Mal de Huecú", attributed to the consumption of the native grasses Poa huecu and/or Festuca argentina. In this ... -
Influences of pine plantations on small mammal assemblages of the Patagonian forest-steppe ecotone
(De Gruyter, 2011-08)The management of forested landscapes for biodiversity conservation is increasingly recognized as an important objective in Argentina. However, pine plantations are being established replacing native pristine or human ... -
Ingreso y evolución del parasitismo por Melophagus ovinus en una majada Corriedale en el noroeste de la Patagonia Argentina
(Sociedad Chilena de Parasitología, 2006-06)Un carnero infestado con M. ovinus fue introducido durante dos semanas en una majada de ovinos cruza Corriedale que se encontraba libre del parásito. La evolución de M. ovinus fue medida registrando los ovinos infestados ... -
Integrating family farmers’ perceptions with meteorological records and national climate change projections to enhance site-specific adaptation knowledge
(Springer, 2023-12)Adaptation strategies to climate change (CC) that do not consider local perspectives tend to fail at specifc sites. Searching for complementary actions, we aimed to assess how farmers’ perceptions about climatic hazards ... -
Integrating genetics and suitability modelling to bolster climate change adaptation planning in Patagonian nothofagus forests
(2017)We investigated the impact of past changes in habitat suitability on the current patterns of genetic diversity of two southern beeches (Nothofagus nervosa and Nothofagus obliqua) in their eastern fragmented range in ... -
Is forage productivity of meadows influenced by the afforestation of upstream hillsides? A study in NW Patagonia
(2011)Meadows are important reserves of water, with a key role in the maintenance of the biodiversity and productivity of ecosystems. In Patagonia, Argentina, afforestation with fast-growing exotic conifers has slowly but ... -
Is forage productivity of meadows influenced by the afforestation of upstream hillsides? A study in NW Patagonia = Afecta la presencia de forestaciones ubicadas en las laderas aguas arriba de mallines su productividad forrajera? Un estudio en el Noroeste Patagónico
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), (España), 2011-04-13)Meadows are important reserves of water, with a key role in the maintenance of the biodiversity and productivity of ecosystems. In Patagonia, Argentina, afforestation with fast-growing exotic conifers has slowly but ... -
Linking ecosystem resistance, resilience, and stability in steppes of North Patagonia
(Elsevier, 2013-01)The main objective of an ecosystem sustainable management is to preserve its capacity to respond and adapt to current disturbances and/or future changes, and maintain the provision of environmental goods and services. Two ... -
Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow
(Elsevier, 2020-03)Increasing global aridity combined with changing environmental conditions might cause irreparable alterations in arid and semiarid ecosystems. Knowledge of within-species genetic diversity and adaptive responses, especially ... -
Long-term coexistence of two invasive vespid wasps in NW Patagonia (Argentina)
(Springer, 2022-07-03)In Patagonia (Argentina) two non-native vespid wasps became established in the last decades. Vespula germanica was first detected in 1980, while V. vulgaris arrived some 30 years later. Both species can have a strong ...