Publications
Effects of Light on the Transition From Sapling to Adult Prunus cerasus : Implications for Managing Invasion in Los Alerces National Park, Argentina
Invasive Prunus cerasus, known for its long-distance seed dispersal via frugivory, shows significant variation in the transition from sapling to adult phase based on light availability. Research in Los Alerces National Park, Argentina, reveals that 80% of individuals with a basal diameter of 2 cm flower under low canopy cover, while those under high cover require a 4 cm diameter—corresponding to ages of 10 and 20 years, respectively. Dendrochronology and light measurements confirmed that canopy cover influences daily light intensity and photoperiod, critical for flowering. These findings underscore the importance of prioritizing the removal of P. cerasus in low-canopy areas before saplings reach a 2 cm basal diameter to effectively manage invasions.
Potential species distribution models can help in the conservation of threatened species: the case of the Guigna (Leopardus guigna) in Los Alerces National Park, Argentina
A critical analysis of Guigna (Leopardus guigna) distribution in Los Alerces National Park, Argentina, identifies four primary valleys and two secondary areas as optimal for conservation. The study leverages potential species distribution models to map sightings over 45 years, pinpointing regions with confirmed presence or absence while accounting for observation biases. It reveals that maintaining forest connectivity—threatened by wild boar expansion—is essential for sustaining healthy Guigna populations amid projected climate and land-use changes. This research provides actionable insights for the Argentine Administration of National Parks to prioritize conservation strategies.
Updating records of a threatened felid species of the Argentinian Patagonia: the Guigna Leopardus guigna (Molina, 1782) (Mammalia: Carnivora: Felidae) in Los Alerces National Park
Researchers have documented two new, reliable records of the Guigna (Leopardus guigna), a small, endangered felid native to Argentina and Chile's Valdivian Temperate Forests. These sightings occurred in Los Alerces National Park, Chubut Province, marking the southernmost confirmed presence of the species within a protected area. One individual was found dead near Amutui Quimei Lake, while another was captured in a trap near Menéndez Lake, both in Nothofagus-dominated forest habitats close to watercourses. The study underscores the critical need for habitat connectivity between protected areas, particularly in regions with significant human activity, to ensure long-term Guigna population viability. Further fieldwork is recommended to expand knowledge on its distribution, ecology, and habitat use.
Macro and Microhabitat Patterns of Habitat Use and Selection by Wild Boar in Los Alerces National Park
Wild boar (Sus scrofa) preferentially select Lomatia hirsuta forest over other habitats, such as Nothofagus pumilio forest and Valdivian evergreen rainforest, in Los Alerces National Park, Argentina. This preference is consistent across both spring-summer and autumn-winter periods, with microhabitat selection favoring low slopes and high canopy cover, particularly on southeast-facing areas with intermediate ground cover. The study, one of the first to analyze wild boar habitat use at macro and micro scales in Patagonian protected areas, provides critical insights for managing this invasive species and understanding its ecological impact.
Owls in urban narratives: implications for conservation and environmental education in NW Patagonia (Argentina)
A significant surge in owl populations following a rodent boom in Los Alerces National Park, Argentina, has sparked both ecological concern and human conflict. The study reveals that while 74% of respondents recognize owls as primarily rodent predators, deep-seated myths persist: 61% associate them with diabolical traits, while 13% view them as wise symbols. These perceptions drive divergent behaviors, from protection to extermination. An intercultural educational approach, integrating academic and traditional knowledge, effectively increased student interest in owl conservation. The research underscores the need for targeted environmental education and state-led conservation programs to mitigate human-owl conflicts in urban Patagonian areas.
Short-term effects of wildfire on Patagonian headwater streams
A significant shift in taxonomic composition and reduced densities of sensitive taxa in Patagonian headwater streams was observed shortly after the 2015 El Cristo wildfire in Los Alerces National Park. While macroinvertebrate richness, abundance, and diversity remained unchanged, burned streams exhibited higher water temperature, total dissolved solids, and suspended solids, along with a notable decrease in shredders and collector-filterers. This suggests that while overall biodiversity may be resilient to short-term disturbances, sensitive taxa and functional feeding groups are vulnerable. The study compared physicochemical variables and community structure between burned and unburned streams through periodic water quality assessments and sampling of periphyton and invertebrates over eight months post-fire.
The presence of the marsupial Dromiciops gliroides in Parque Nacional Los Alerces, Chubut, Southern Argentina, after the synchronous maturation and flowering of native bamboo and subsequent rodent irruption
A breeding population of the rare marsupial Dromiciops gliroides, the sole surviving member of the order Microbiotheria, has been discovered in Los Alerces National Park, Argentina—marking its southernmost known range in the country. This finding extends its distribution further south than previously documented and suggests the species thrives in Nothofagus forests, likely using tree hollows for refuge rather than constructing dreys. The study, conducted post a 70-year bamboo flowering event that triggered a rodent irruption, captured four adult Dromiciops gliroides, including two females with pouch young, indicating births occurred between late October and early November. Research suggests the species relies on insects during spring due to limited fruiting plants. Threats to this population include introduced predators and human activities such as farming and tourism.
Habitat use of the wild boar,Sus scrofaLinnaeus 1758, in Los Alerces National Park, Argentina
Wild boars (Sus scrofa) in Los Alerces National Park, Argentina, show distinct habitat preferences, favoring lower elevations (600 to 700 meters above sea level) and forests dominated by Nothofagus species with dense understory. Seasonal variations were observed, with different patterns of sign occurrence between summer and autumn. These findings provide critical insights for park management, aiding in the development of targeted wild boar control strategies.
You are here:
World Heritage Explorer > World Heritage Research > World Heritage Sites > Los Alerces National Park