216 results match your criteria nothofagus species

The effect of species, size, and fire intensity on tree mortality within a catastrophic bushfire complex.

Ecol Appl 2021 May 27:e2383. Epub 2021 May 27.

School of Ecosystem and Forest Sciences, The University of Melbourne, Parkville, Victoria, 3010, Australia.

Infrequent, high-intensity disturbances can have profound impacts on forested landscapes, changing forest structure and altering relative species abundance. However, due to their rarity and the logistical challenges of directly observing such extreme events, both the spatial variability of disturbance intensity and the species-specific responses to this variability are poorly understood. We used observed patterns of mortality across a fire severity gradient following the 2009 Black Saturday fires in southeastern Australia to simultaneously estimate 1) species- and size-specific susceptibility to fire-induced mortality and 2) fire intensity. Read More

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Symbiotic Interaction Enhances the Recovery of Endangered Tree Species in the Fragmented Maulino Forest.

Front Plant Sci 2021 15;12:663017. Epub 2021 Apr 15.

Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile.

Beneficial plant-associated microorganisms, such as fungal endophytes, are key partners that normally improve plant survival under different environmental stresses. It has been shown that microorganisms from extreme environments, like those associated with the roots of Antarctica plants, can be good partners to increase the performance of crop plants and to restore endangered native plants. and , are among the most endangered species of Chile, restricted to a narrow and/or limited distributional range associated mainly to the Maulino forest in Chile. Read More

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Isolation and characterization of microsatellites for the endangered endemic tree Nothofagus alessandrii (Nothofagaceae).

Mol Biol Rep 2021 Apr 24;48(4):3877-3883. Epub 2021 Apr 24.

Instituto de Ciencias Biológicas, Universidad de Talca, Avenida Lircay S/N, 3460000, Talca, Chile.

Nothofagus alessandrii (Nothofagaceae) is one of the most endangered trees from Chile due to high rates of habitat disturbance caused by human activities. Despite its conservation status, few molecular markers are available to study its population genetic, connectivity and to assist reproduction programs. Thus, the species needs urgent actions to restore its original distribution. Read More

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Deciphering the transcriptomic regulation of heat stress responses in Nothofagus pumilio.

PLoS One 2021 30;16(3):e0246615. Epub 2021 Mar 30.

Institute of Nuclear Technologies for Health (INTECNUS), National Scientific and Research Council (CONICET), S. C. de Bariloche, Argentina.

Global warming is predicted to exert negative impacts on plant growth due to the damaging effect of high temperatures on plant physiology. Revealing the genetic architecture underlying the heat stress response is therefore crucial for the development of conservation strategies, and for breeding heat-resistant plant genotypes. Here we investigated the transcriptional changes induced by heat in Nothofagus pumilio, an emblematic tree species of the sub-Antarctic forests of South America. Read More

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Four new species of sequestrate from Chilean Nothofagaceae forests.

Mycologia 2021 May-Jun;113(3):629-642. Epub 2021 Mar 2.

Department of Plant Pathology, University of Florida, P.O. Box 110680, Gainesville, Florida 32611.

Sequestrate fungi have enclosed hypogeous, subhypogeous, or epigeous basidiomes and have lost the ability to actively discharge their spores. They can be distinguished as gasteroid (basidiome fully enclosed with a loculated hymenophore) or secotioid (basidiome with some agaricoid or pileate-stipitate features, but the lamellae are misshapen and unexposed or mostly unexposed at maturity). There are only four reports of sequestrate taxa within the ectomycorrhizal family Inocybaceae, three from Australia and one from western North America. Read More

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A calibration of cellulose isotopes in modern prostrate Nothofagus and its application to fossil material from Antarctica.

Sci Total Environ 2021 Feb 7;754:142247. Epub 2020 Sep 7.

School of Environmental Sciences, University of East Anglia, Norwich, UK.

Carbon and oxygen isotopes (δC and δO) in tree rings are widely used to reconstruct palaeoclimate variables such as temperature during the Holocene (12 thousand years ago - present), and are used increasingly in deeper time. However, their use is largely restricted to arboreal trees, which excludes potentially important data from prostrate trees and shrubs, which grow in high latitude and altitude end-member environments. Here, we calibrate the use of δC and δO as climatic archives in two modern species of southern beech (Nothofagus) from Tierra del Fuego, Chile, at the southern limit of their current range. Read More

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February 2021

Forest canopy-cover composition and landscape influence on bryophyte communities in Nothofagus forests of southern Patagonia.

PLoS One 2020 24;15(11):e0232922. Epub 2020 Nov 24.

Laboratorio de Recursos Agroforestales, Centro Austral de Investigaciones Científicas (CADIC-CONICET), Ushuaia, Tierra del Fuego, Argentina.

Bryophytes (liverworts, mosses and hornworts) are one of the most diverse plant groups worldwide but one of the least studied in temperate forests from an ecological perspective. In comparison to vascular plants, bryophytes have a broader distribution and a longer altitudinal gradient, and their influence on the landscape is poorly understood. The objective was to evaluate environmental drivers that can influence bryophyte cover, richness, diversity, and nestedness in different forest canopy compositions in two typical landscapes across the natural distribution of bryophytes in Tierra del Fuego (Argentina). Read More

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December 2020

Genetic diversity and population structure in Nothofagus pumilio, a foundation species of Patagonian forests: defining priority conservation areas and management.

Sci Rep 2020 11 6;10(1):19231. Epub 2020 Nov 6.

Grupo de Genética Ecológica y Mejoramiento Forestal del Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB) INTA EEA Bariloche -CONICET, Modesta Victoria 4450, CP: 8400,, S. C. Bariloche, Río Negro, Argentina.

Patagonian forests are the southernmost temperate forests in the world, and Nothofagus pumilio is one of their most ecologically important tree species (i.e., a foundation species). Read More

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November 2020

Fruit provision from shrubs as ecosystem service in forest of Tierra del Fuego.

Heliyon 2020 Oct 12;6(10):e05206. Epub 2020 Oct 12.

Universidad de Morón, Laboratorio de Fisiología Vegetal, Facultad de Agronomía y Ciencias Agroalimentarias, Machado 914, Morón, B1708EOH, Buenos Aires, Argentina.

Berry production is a non-wood product worldwide recognized by its nutritional value and taste, but the most studied species are non-native commercial plants in productive areas, leaving aside native berries. We propose that native berries ( G.Forst) naturally growing in degradation forests areas could diversify livestock establishment production and complement traditional uses (e. Read More

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October 2020

Impact of Invasive Bees on Plant-Pollinator Interactions and Reproductive Success of Plant Species in Mixed Nothofagus antarctica Forests.

Neotrop Entomol 2020 Aug 30;49(4):557-567. Epub 2020 Jul 30.

Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD), Sede Andina, Univ. Nacional de Río Negro (UNRN), Río Negro, Argentina.

Invasive social bees can alter plant-pollinator interactions with detrimental effects on both partners. However, most studies have focused on one invasive bee species, while the interactions among two or more species remain poorly understood. Also, many study sites had a history of invasive bees, being hard to find sites with historical low abundances. Read More

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Corner's rules pass the test of time: little effect of phenology on leaf-shoot and other scaling relationships.

Ann Bot 2020 11;126(7):1129-1139

Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Coyhaique, Chile.

Background And Aims: Twig cross-sectional area and the surface area of leaves borne on it are expected to be isometrically correlated across species (Corner's rules). However, how stable this relationship remains in time is not known. We studied inter- and intraspecific twig leaf area-cross-sectional area (la-cs) and other scaling relationships, including the leaf-shoot mass (lm-sm) scaling relationship, across a complete growing season. Read More

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November 2020

A relic of the past: current genetic patterns of the palaeoendemic tree Nothofagus macrocarpa were shaped by climatic oscillations in central Chile.

Ann Bot 2020 10;126(5):891-904

Laboratorio Ecotono, Universidad Nacional del Comahue, INIBIOMA-CONICET, Bariloche, Argentina.

Background And Aims: The Mediterranean-type forest of central Chile is considered a 'biodiversity hotspot' and a relic of a wider ancient distribution produced by past climatic oscillations. Nothofagus macrocarpa, commonly known as 'roble de Santiago', is a threatened palaeoendemic of this forest, poorly represented in the protected area system. This tree has been repeatedly misidentified as the sister species N. Read More

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October 2020

Geographic boundaries and natural history notes of the microendemic endangered frog Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile.

Zookeys 2020 22;929:79-92. Epub 2020 Apr 22.

Riparia LTDA, Valdivia, Chile Unaffiliated Valdivia Chile.

is considered a microendemic endangered species inhabiting the temperate forests of the Mahuidanche Range of southern Chile. However, this categorization is based on scarce data about its distribution and natural history. In order to assess these parameters, this article reports new geographic records obtained through intensive fieldwork between 2011 and 2016. Read More

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Data: Inventory of trees in five fragments of temperate evergreen forest located on the eastern slope of Chile's coastal mountain range.

Data Brief 2020 Jun 18;30:105557. Epub 2020 Apr 18.

Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Avda. Fuchslocher 1305, Osorno, Chile.

The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by and ) and four fragments dominated by . The forests are located in an agroforestry matrix landscape of the Coastal Mountain Range of the Chilean Lake District. The data collection was carried out using line transect sampling, which was traced through the core of each fragment oriented towards its longest axis. Read More

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An Out-of-Patagonia migration explains the worldwide diversity and distribution of Saccharomyces eubayanus lineages.

PLoS Genet 2020 05 1;16(5):e1008777. Epub 2020 May 1.

Millennium Institute for Integrative Biology (iBio), Santiago, Chile.

Population-level sampling and whole-genome sequences of different individuals allow one to identify signatures of hybridization, gene flow and potential molecular mechanisms of environmental responses. Here, we report the isolation of 160 Saccharomyces eubayanus strains, the cryotolerant ancestor of lager yeast, from ten sampling sites in Patagonia along 2,000 km of Nothofagus forests. Frequency of S. Read More

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Purple haze: Cryptic purple sequestrate in New Zealand.

Mycologia 2020 May-Jun;112(3):588-605. Epub 2020 Apr 21.

Department of Botany, University of Otago , PO Box 56, Dunedin 9054, New Zealand.

Cortinarius: is a species-rich ectomycorrhizal genus containing taxa that exhibit agaricoid or sequestrate basidiome morphologies. In New Zealand, one of the most recognizable and common species is the purple sequestrate fungus, . We used genome skimming of the almost 100-y-old type specimen from to obtain the nuc rDNA internal transcribed spacer region ITS1-5. Read More

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Xylem anatomy needs to change, so that conductivity can stay the same: xylem adjustments across elevation and latitude in Nothofagus pumilio.

Ann Bot 2020 06;125(7):1101-1112

iuFOR-EiFAB, Universidad de Valladolid, Campus Duques de Soria, Soria, Spain.

Background And Aims: Plants have the potential to adjust the configuration of their hydraulic system to maintain its function across spatial and temporal gradients. Species with wide environmental niches provide an ideal framework to assess intraspecific xylem adjustments to contrasting climates. We aimed to assess how xylem structure in the widespread species Nothofagus pumilio varies across combined gradients of temperature and moisture, and to what extent within-individual variation contributes to population responses across environmental gradients. Read More

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Fungal diversity in canopy soil of silver beech, Nothofagus menziesii (Nothofagaceae).

PLoS One 2020 24;15(1):e0227860. Epub 2020 Jan 24.

Department of Botany, University of Otago, Dunedin, New Zealand.

Adventitious roots in canopy soils associated with silver beech (Nothofagus menziesii Hook.f. (Nothofagaceae)) form ectomycorrhizal associations. Read More

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Mesozoic sooty mould beetles as living relicts in New Zealand.

Proc Biol Sci 2019 12 18;286(1917):20192176. Epub 2019 Dec 18.

Manaaki Whenua Landcare Research, Zealand Arthropod Collection, Private Bag 92170, Auckland, New Zealand.

New Zealand is an island continent that completed its split from the Gondwanan continent at 52 Ma, harbouring an iconic biota of tuatara, kiwi and weta. The sooty mould community is a distinctive trophic element of New Zealand forest ecosystems that is driven by plant-feeding sternorrhynchan Hemiptera. These produce honeydew, which supports fungal growth, which in turn supports numerous endemic invertebrates, including endemic New Zealand beetle families. Read More

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December 2019

Essential Nutrient and Trace Element Foliar Resorption of Two Co-Existing Species Grown Under Different Environmental Conditions in Southern Patagonia.

Front Plant Sci 2019 27;10:1542. Epub 2019 Nov 27.

Department of Forestry Research, Instituto Nacional de Tecnología Agropecuaria (INTA), Santa Cruz, Argentina.

Nutrient resorption is crucial for mineral element conservation and efficiency of forest species, but knowledge on its significance and the mechanisms involved is still limited for most species and habitats. Focusing on the harsh conditions for plant growth and survival of southern Patagonia, a field study for comparing the rate of foliar resorption of macro-, micro-nutrients, and trace elements in coexisting and forests was performed. Forests located in three contrasting productivity sites (with different soil and climatic conditions) were selected, and mature, functional versus senescent leaves of both species were collected at two different dates of the growing season. Read More

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November 2019

Fire damage to cambium affects localized xylem anatomy and hydraulics: the case of Nothofagus pumilio in Patagonia.

Am J Bot 2019 12 22;106(12):1536-1544. Epub 2019 Nov 22.

Laboratorio de Dendrocronología e Historia Ambiental, IANIGLA-CONICET, CCT CONICET Mendoza, Av. Ruiz Leal s/n, CC330-M5502IRA, Mendoza, Argentina.

Premise: Fire scars on trees are created by excessive heat from a fire that kills the vascular cambium. Although, fires are one of the most important forest disturbances in Patagonia, the effects of fire on tree physiology and wood anatomy are still unknown. In this study, we hypothesized that abnormal functioning of the cambium after a fire will induce anatomical changes in the wood. Read More

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December 2019

Detecting Growth Reductions Induced by Past Spring Frosts at the Northern Patagonian Andes.

Front Plant Sci 2019 31;10:1413. Epub 2019 Oct 31.

EiFAB-iuFOR, Universidad de Valladolid, Soria, Spain.

Extreme climatic events, such as late frosts in spring during leaf flush, have considerable impacts on the radial growth of temperate broadleaf trees. Albeit, all broadleaved species are potentially vulnerable, damage depends on the particularities of the local climate, the species, and its phenology. The impact of late spring frosts has been widely investigated in the Northern Hemisphere, but the potential incidence in Southern Hemisphere tree species is still poorly known. Read More

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October 2019

Discovery of the transantarctic distribution of the genus Metanteon Olmi (Hymenoptera: Dryinidae), with description of a new species from New Caledonia.

Zootaxa 2019 Nov 7;4695(2):zootaxa.4695.2.9. Epub 2019 Nov 7.

Department of Agriculture and Forestry Sciences, University of Tuscia, Via San Camillo de Lellis, I-01100 Viterbo, Italy.

Metanteon poirieri sp. nov. (Hymenoptera: Dryinidae: Anteoninae) is described from New Caledonia. Read More

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November 2019

A new flower fly species of Cepa Thompson amp; Vockeroth (Diptera: Syrphidae) from the Valdivian evergreen forest hotspot, Chile.

Zootaxa 2019 May 30;4612(3):zootaxa.4612.3.9. Epub 2019 May 30.

Laboratorio de Ecología de Ambientes Fragmentados (LEAF), Facultad de Ciencias Veterinarias y Pecuarias, Campus sur, Universidad de Chile. Citizen Science Program Moscas Florícolas de Chile. Centro de Estudios en Ecología Espacial y Medio Ambiente-Ecogeografía, Santiago, Chile..

The Neotropical region has a high species richness of flower flies. However, there are many known species awaiting proper description. Cepa Thompson Vockeroth is a Neotropical genus with scattered records and few individuals collected of its three species. Read More

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Three new species of the genus Neuquenaphis (Hemiptera, Aphididae, Spicaphidinae) from southernmost South America.

Zootaxa 2019 May 1;4590(5):zootaxa.4590.5.2. Epub 2019 May 1.

Departamento de Biodiversidad y Gestion Ambiental, Universidad de León. 24071 León (Spain).ORCID ID: 0000-0001-6714-2415..

Three new species of Neuquenaphis Blanchard are described from aphids collected in southernmost South America on several species of Nothofagus, southern beeches: Neuquenaphis blackmani Nieto Nafría and Brown, sp. n. from apterous and alate viviparous females and alatoid nymphs collected on Nothofagus dombeyi in Los Lagos and Los Ríos regions (Chile) and on Nothofagus nitida in Los Ríos region, Neuquenaphis aurata Mier Durante and von Dohlen, sp. Read More

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Stem length, not climate, controls vessel diameter in two trees species across a sharp precipitation gradient.

New Phytol 2020 03 28;225(6):2347-2355. Epub 2019 Nov 28.

Instituto de Biología, Universidad Nacional Autónoma de México, Tercer Circuito s/n de Ciudad Universitaria, Ciudad de México, 04510, México.

Variation in xylem conduit diameter traditionally has been explained by climate, whereas other evidence suggests that tree height is the main driver of conduit diameter. The effect of climate versus stem length on vessel diameter was tested in two tree species (Embothrium coccineum, Nothofagus antarctica) that both span an exceptionally wide precipitation gradient (2300-500 mm). To see whether, when taking stem length into account, plants in wetter areas had wider vessels, not only the scaling of vessel diameter at the stem base across individuals of different heights, but also the tip-to-base scaling along individuals of similar heights across sites were examined. Read More

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Secondary leaves of an outbreak-adapted tree species are both more resource acquisitive and more herbivore resistant than primary leaves.

Tree Physiol 2019 09;39(9):1499-1511

Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Camino Baguales, Coyhaique, Chile.

The magnitude and frequency of insect outbreaks are predicted to increase in forests, but how trees cope with severe outbreak defoliation is not yet fully understood. Winter deciduous trees often produce a secondary leaf flush in response to defoliation (i.e. Read More

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September 2019

Cluster root-bearing Proteaceae species show a competitive advantage over non-cluster root-bearing species.

Ann Bot 2019 11;124(6):1121-1131

Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Coyhaique, Chile.

Background And Aims: Cluster roots (CRs) constitute a special root adaptation that enables plants to take up nutrients, especially phosphorus (P), from soils with low nutrient availability, including recent volcanic deposits. It is unclear, however, how CR species interact with non-cluster root-bearing (NCR) species, and how substrates' fertility modulates potential interactions.

Methods: We experimentally assessed the net interaction between CR and NCR species using two substrates of contrasting fertility: nutrient-rich nursery mix and tephra (low P availability). Read More

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November 2019

Herbivore resistance in congeneric and sympatric Nothofagus species is not related to leaf habit.

Am J Bot 2019 06 26;106(6):788-797. Epub 2019 May 26.

Centro de Investigación en Ecosistemas de la Patagonia (CIEP), Moraleda 16, Coyhaique, 5951601, Chile.

Premise: Two fundamental hypotheses on herbivore resistance and leaf habit are the resource availability hypothesis (RAH) and the carbon-nutrient balance hypothesis (CNBH). The RAH predicts higher constitutive resistance by evergreens, and the CNBH predicts higher induced resistance by deciduous species. Although support for these hypotheses is mixed, they have rarely been examined in congeneric species. Read More

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Potential biodiversity map of understory plants for Nothofagus forests in Southern Patagonia: Analyses of landscape, ecological niche and conservation values.

Sci Total Environ 2019 Sep 16;682:301-309. Epub 2019 May 16.

Laboratorio de Recursos Agroforestales, Centro Austral de Investigaciones Científicas (CADIC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Houssay 200, 9410 Ushuaia, Tierra del Fuego, Argentina. Electronic address:

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. Read More

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September 2019