scholarly journals Rescuing the ectomycorrhizal biodiversity associated with South American Nothofagaceae forest, from the 19th century naturalists up to molecular biogeography

2019 ◽  
Vol 92 (5) ◽  
pp. 500-511
Author(s):  
Carolina Barroetaveña ◽  
María Eugenia Salgado Salomón ◽  
Vilma Bassani
Keyword(s):  
Fruit Body ◽  
Niche Overlap ◽  
South American ◽  
Root Tips ◽  
Research Papers ◽  
The Andes ◽  
The 19Th Century ◽  
Nothofagus Dombeyi ◽  
Total Species ◽  
Molecular Biogeography

Abstract The southernmost portion of the Andes in South America hosts Nothofagaceae forests that form ectomycorrhizal (EcM) associations. We compiled all the published reports of EcM taxa from these woodlands, based on fruit-body collections and molecularly identified root tips. This resulted in 87 peer-reviewed research papers dealing with EcM associations from Nothofagaceae forests published over the past 62 years. Based on these papers the EcM richness and its association with Nothofagaceae species was analyzed. Represented by 45 genera (34 Basidiomycetes and 11 Ascomycetes), 479 EcM taxa have been recorded, plus an additional 46 EcM taxa which are potentially EcM. Cortinarius was the most frequent and diverse genus, with 64.9% of total species. Nothofagus dombeyi had the highest number of unique EcM species, followed by N. pumilio, N. antarctica and Lophozonia obliqua. The EcM community associated with Nothofagus species, except N. nitida, showed higher similarities among themselves, than with Lophozonia and Fuscospora species. Beta diversity indexes showed EcM Nothofagus species have 29–42% niche overlap, while Nothofagus—Lophozonia only had 1–16%. The assessment of the accuracy of the EcM diversity, host specificity and community structure deserve further studies combining phylogenetic analysis based on broad ecological surveys. On the basis of pre-selected criteria Austropaxillus statuum, Cortinarius fragilis, Cortinarius xiphidipus and Hallingea purpurea are proposed as candidates for nursery spore inoculations, and should be subject to scientific evaluation to determine costs and benefits.

scholarly journals On the Pleistocene Snow-Line Depression in the Arid Regions of the South American Andes

1971 ◽  
Vol 10 (59) ◽  
pp. 255-267
Author(s):  
Stefan L. Hastenrath
Keyword(s):  
Arid Regions ◽  
South American ◽  
The South ◽  
Temperate Latitude ◽  
The Andes ◽  
Western Cordillera ◽  
Snow Line ◽  
The Pacific ◽  
The Arid Regions ◽  
June July

AbstractField observations during a journey through the arid regions of the South American Andes in June-July 1969 are evaluated in conjunction with available air photographs and reports from adjacent regions of the High Andes. Results indicate an increase of the Pleistocene snow-line depression in the western Cordillera from about 700 m at lat. 12° S. to more than 1 500 m at lat. 30° S. The Pleistocene snow-line depression decreases from the Pacific to the Atlantic side of the Andes, but particularly strongly so on the poleward fringe of the arid region. From this geomorphic evidence it is suggested that the atmospheric circulation during the glacial period was characterized by an Equatorward displacement of the boundary between tropical easterlies and temperate-latitude westerlies.

Gender and History in the Andes

2021 ◽  
Keyword(s):  
Nonprofit Organizations ◽  
Social Inequalities ◽  
South American ◽  
Gender Theory ◽  
The Past ◽  
The Andes ◽  
Andean Countries ◽  
Feminist Perspectives ◽  
Female Bodies ◽  
Historical Accounts

In Andean academia, a highly conservative environment, gender as a category of analysis has been an elusive and poorly understood concept. Despite the fact that in many countries of the Northern Hemisphere (where Euro-American knowledge is constructed), as well as South American countries, historians and anthropologists working from feminist perspectives have used gender theory since the 1980s, it is only in the 2010s that Andeanist scholars have begun to fully acknowledge that almost all historical narratives (from the Pre-Hispanic, Colonial, Republican and Contemporary Periods) excluded women as actors in all-important historical processes. As many Andean countries reevaluate their national republican discourses while celebrating the bicentennial of their independence, this flaw has become more evident. Hegemonic and historical accounts of South American independence movements, which highlight critical events and important historical figures, have focused on male figures and republican ideals mostly based on masculine values. Disseminating history from a masculine viewpoint, these narratives ignore women and other marginalized social groups, including indigenous and Afro-descendant communities, and fail to recognize their role as agents of political change. Consequently, using these narratives in the construction of national identities and citizenship has created social inequalities. The exclusion of women and nonbinary gender identities from the narrative has been noticed and acknowledged not only by academics, but also by society in general. Therefore, academic institutions and nonprofit organizations have promoted the publication and investigation of gender topics in history. However, archaeology, an isolated discipline immersed in its own discussions and dynamics, has developed in its own way. In general, opportunistic discoveries of “great and powerful women” have positioned archaeologists (mostly men) and their interpretations of the Andean past and power in an uncomfortable position. How to interpret these contexts using societal models that envision female bodies and feminine collectivities in a perpetually subordinated role? How to understand them without the tools of feminism and decolonial and anthropological theory? How to construct complex roles for Andean women in the past from a place in the present where that seems impossible and unimaginable (or even subversive)? From an Andean political awakening that takes a deep historical perspective, gender theory is under (de)construction. The topic of gender and history in the Andes is not about placing some female figures and mixing them up in an already hegemonic history; it is about creating innovative visions of the past, where multiple historical voices from the past and present appear.

Taxonomic status of Andersen’s fruit-eating bat (Artibeus jamaicensis aequatorialis) and revised classification of Artibeus (Chiroptera: Phyllostomidae)

Zootaxa ◽  
2010 ◽  
Vol 2648 (1) ◽  
pp. 45 ◽  
Author(s):  
PETER A. LARSEN ◽  
MARÍA R. MARCHÁN-RIVADENEIRA ◽  
ROBERT J. BAKER
Keyword(s):  
Taxonomic Status ◽  
Morphological Characters ◽  
Species Level ◽  
South American ◽  
Reciprocal Monophyly ◽  
Dna Variation ◽  
The Andes ◽  
Artibeus Jamaicensis ◽  
Phylogenetic Studies

Fruit-eating bats of the genus Artibeus are widely distributed across the Neotropics and are one of the most recently evolved assemblages of the family Phyllostomidae. Although the taxonomy and systematics of species of Artibeus has been the subject of an intense historical debate, the most current taxonomic arrangements recognize approximately eleven species within the genus. However, recent phylogenetic studies indicate that species diversity within South and Middle American populations of Artibeus is underestimated. South American populations referable to A. jamaicensis aequatorialis are of considerable interest because previous studies of mitochondrial DNA variation identified potential species level variation west of the Andes Mountains. In this study we use morphometric and genetic data (nuclear AFLPs) to investigate the taxonomic status of A. j. aequatorialis. Our results indicate that elevating aequatorialis to species level is appropriate based on statistically supported reciprocal monophyly in mitochondrial and nuclear datasets and diagnostic morphological characters. In light of our results, and of those presented elsewhere, we provide a revised classification of the genus.

Species status of Colias misti (Pieridae: Coliadinae) from the Arequipa region, South Peru, and a description of its new subspecies, from Cotahuasi canyon, South-Central Peru

Zootaxa ◽  
2019 ◽  
Vol 4706 (3) ◽  
pp. 408-426
Author(s):  
ALEXANDER V. KIR’YANOV
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Detailed Comparison ◽  
South American ◽  
Species Status ◽  
Reliable Identification ◽  
New Subspecies ◽  
The Andes ◽  
South Central ◽  
A New Species

A new species of the genus Colias Fabricius from the Arequipa region of Peru, C. misti Kir’yanov sp. nov., stat. nov., is established by raising it from the subspecies rank, C. lesbia misti Kir’yanov 2017. This taxonomic act is justified after detailed comparison of C. misti with representatives of phenotypically similar other South American Colias, including the subspecies of C. lesbia. The newly presented taxa are diagnosed by adult morphology, bionomics, and male genitalia. The diagnosis of a new subspecies Colias misti ccota Kir’yanov ssp. nov., discovered in the World’s deepest canyon Cotahuasi (Peru), is based on different and stable characters in phenotypes, genitalia, and bionomics of C. misti ccota and C. misti misti. Both subspecies of C. misti are endemic to the Western slopes of the Andes. It is also demonstrated that the shape of the male aedeagus is diagnostic for a reliable identification of the South American Colias.

On the geographic distribution of Boeckella brevicaudata (Brady, 1875) (Copepoda, Calanoida) and its species associations in seasonal ephemeral pools in the Magallanes region (53°S, Chile)

Crustaceana ◽  
2014 ◽  
Vol 87 (5) ◽  
pp. 540-550 ◽  
Author(s):  
Patricio De los Ríos-Escalante ◽  
Andrés Mansilla
Keyword(s):  
Calanoid Copepod ◽  
Null Model ◽  
Niche Overlap ◽  
Model Analysis ◽  
South American ◽  
South American Species ◽  
Mineral Contents ◽  
Ephemeral Pools ◽  
Chilean Patagonia ◽  
Southern Patagonia

The distribution of crustaceans of inland waters in southern Patagonia is characterized by the presence of sub-Antarctic and southern South American species. The aims of the present study were to study the geographical distribution of the calanoid copepod Boeckella brevicaudata (Brady, 1875) and the community structure of the zooplankton assemblages in which this species occurs. This last purpose was approached by applying null-models analyses based on species co-occurrence and niche-sharing. The species itself inhabits sub-Antarctic islands as well as southern South America. The results of the co-occurrence null model analysis revealed that the communities with this species have no regulating factors, whereas the niche overlap null model analysis revealed that these species share the same ecological niche. We thus found low abundances for all species, with specifically low B. brevicaudata abundance, at low mineral contents of the water. The results obtained were similar among sites in southern Argentinean and southern Chilean Patagonia, and on sub-Antarctic islands of which data were available.

scholarly journals Analysis of Hantavirus Genetic Diversity in Argentina: S Segment-Derived Phylogeny

2002 ◽  
Vol 76 (8) ◽  
pp. 3765-3773 ◽  
Author(s):  
Marlene C. Bohlman ◽  
Sergey P. Morzunov ◽  
John Meissner ◽  
Mary Beth Taylor ◽  
Kimiko Ishibashi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Dominant Factor ◽  
South American ◽  
Protein Amino Acid ◽  
The Andes ◽  
Andes Virus ◽  
Virus Genotypes ◽  
The Common ◽  
High Level ◽  
Virus Strains

ABSTRACT Nucleotide sequences were determined for the complete S genome segments of the six distinct hantavirus genotypes from Argentina and for two cell culture-isolated Andes virus strains from Chile. Phylogenetic analysis indicates that, although divergent from each other, all Argentinian hantavirus genotypes group together and form a novel phylogenetic clade with the Andes virus. The previously characterized South American hantaviruses Laguna Negra virus and Rio Mamore virus make up another clade that originates from the same ancestral node as the Argentinian/Chilean viruses. Within the clade of Argentinian/Chilean viruses, three subclades can be defined, although the branching order is somewhat obscure. These are made of (i) “Lechiguanas-like” virus genotypes, (ii) Maciel virus and Pergamino virus genotypes, and (iii) strains of the Andes virus. Two hantavirus genotypes from Brazil, Araraquara and Castello dos Sonhos, were found to group with Maciel virus and Andes virus, respectively. The nucleocapsid protein amino acid sequence variability among the members of the Argentinian/Chilean clade does not exceed 5.8%. It is especially low (3.5%) among oryzomyine species-associated virus genotypes, suggesting recent divergence from the common ancestor. Interestingly, the Maciel and Pergamino viruses fit well with the rest of the clade although their hosts are akodontine rodents. Taken together, these data suggest that under conditions in which potential hosts display a high level of genetic diversity and are sympatric, host switching may play a prominent role in establishing hantavirus genetic diversity. However, cospeciation still remains the dominant factor in the evolution of hantaviruses.

The Alchemy of Modernity. Alonso Barba's Copper Cauldrons and the Independence of Bolivian Metallurgy (1790–1890)

2000 ◽  
Vol 32 (1) ◽  
pp. 1-53 ◽  
Author(s):  
TRISTAN PLATT
Keyword(s):  
Nineteenth Century ◽  
Late Nineteenth Century ◽  
Human Beings ◽  
Linear Mode ◽  
The Andes ◽  
Elective Affinities ◽  
History Of ◽  
Early Republican ◽  
European Method ◽  
The 19Th Century

Those natures which, when they meet, quickly lay hold on and mutually affect one another we call affined. This affinity is sufficiently striking in the case of alkalis and acids which, although they are mutually antithetical … most decidedly seek and embrace one another, modify one another, and together form a new substance … It is in just this way that truly meaningful friendships can arise among human beings: for antithetical qualities make possible a closer and more intimate union.Goethe, Elective affinities (1809)A linear mode of historical understanding relegated alchemy to a ‘pre-scientific’ era, with the enlightenment's New Chemistry creating a break between ‘empirical’ and ‘scientific’ metallurgies. Similarly, Bolivia's early Republican silver-production has been regarded as ‘stagnant’ and ‘colonial’ from the ‘modern’ perspective of late nineteenth century liberalism. This article questions both periodisations by documenting an ‘alchemical renaissance’ in Bolivian silver-refining methods during the first part of the 19th century. The relaunch of Alonso Barba's ‘hot method’ of amalgamation in copper cauldrons (1609), and its associated technical discourses, expressed a creole desire for an independent ‘modernity’. This rediscovery of a seventeenth century technology, carried out shortly before the Independence War in the Potosí provinces (Chichas), and slightly later in Oruro and Carangas, is distinguished from the version reinvented in Central Europe by Ignaz von Born (1786), as well as from two pre-Bornian experiments in Potosí and New Spain. Its nineteenth century consolidation was, in part, a little-known reaction to Nordenflicht's failure to introduce the new European method of rotating barrels to the Andes during the 1790s. The article shows that this ‘alchemy of modernity’ held its ground for several decades, suggesting a fresh approach to America's postcolonial ambiguities from the perspective of a comparative history of technology.

Paleowetlands and regional climate change in the central Atacama Desert, northern chile

2008 ◽  
Vol 69 (03) ◽  
pp. 343-360 ◽  
Author(s):  
Jay Quade ◽  
Jason A. Rech ◽  
Julio L. Betancourt ◽  
Claudio Latorre ◽  
Barbra Quade ◽  
...  
Keyword(s):  
Regional Climate ◽  
Atacama Desert ◽  
Regional Climate Change ◽  
Western Slope ◽  
South American ◽  
Groundwater Levels ◽  
The Andes ◽  
Water Tables ◽  
Lithic Artifacts ◽  
North And South

Widespread, organic-rich diatomaceous deposits are evidence for formerly wetter times along the margins of the central Atacama Desert, one of the driest places on Earth today. We mapped and dated these paleowetland deposits at three presently waterless locations near Salar de Punta Negra (24.5°S) on the western slope of the Andes. Elevated groundwater levels supported phreatic discharge into wetlands during two periods: 15,900 to ~ 13,800 and 12,700 to ~ 9700 cal yr BP. Dense concentrations of lithic artifacts testify to the presence of paleoindians around the wetlands late in the second wet phase (11,000?–9700 cal yr BP). Water tables dropped below the surface before 15,900 and since 8100 cal yr BP, and briefly between ~ 13,800 and 12,700 cal yr BP. This temporal pattern is repeated, with some slight differences, in rodent middens from the study area, in both paleowetland and rodent midden deposits north and south of the study area, and in lake level fluctuations on the adjacent Bolivian Altiplano. The regional synchroneity of these changes points to a strengthening of the South American Monsoon — which we term the "Central Andean Pluvial Event" — in two distinct intervals (15,900–13,800 and 12,700–9700 cal yr BP), probably induced by steepened SST gradients across the tropical Pacific (i.e., La Niña-like conditions).

Effects of aspect and type of competition on the early performance of Nothofagus dombeyi and Nothofagus nervosa in a mixed plantation

2011 ◽  
Vol 41 (5) ◽  
pp. 1075-1081 ◽  
Author(s):  
Pablo J. Donoso ◽  
Ariel A. Muñoz ◽  
Oscar Thiers ◽  
Daniel P. Soto ◽  
Claudio Donoso
Keyword(s):  
The North ◽  
The Andes ◽  
Mixed Plantations ◽  
Good Site ◽  
Negative Effect ◽  
Mixed Plantation ◽  
Early Performance ◽  
Nothofagus Dombeyi ◽  
Nothofagus Nervosa ◽  
Ecological Differences

In the Andes of Chile, two valuable Nothofagus tree species coexist (Nothofagus dombeyi (Mirb.) Oerst. and Nothofagus nervosa (Phil.) Krasser). They could provide an opportunity for mixed plantations because of their ecological differences. In a mixed plantation with a checkerboard design on a good site where the two species naturally coexist, we evaluated their performance according to aspect and type of competition. Nothofagus dombeyi had a greater survivorship (90% vs. 65%) and growth (twice in diameter and 20% greater in height). Forking was significantly lower in N. nervosa (23% vs. 70%). Aspect did not significantly affect the performance of N. dombeyi. The north aspect had a significant negative effect on survivorship of N. nervosa, but aspect did not significantly affect growth or forking of this species. The aspect – type of competition interaction was only significant for N. nervosa in diameter and marginally significant in height. The checkerboard design allowed for a clear separation of interspecific and intraspecific competition in this mixed plantation. Interspecific competition favored growth of N. nervosa on the north aspect (facilitation) and was detrimental to N. nervosa on the south aspect (competition). These results have a direct application when planting mixtures of species of complementary ecological characteristics that can increase the value of the plantation.

Microsatellites and 16S sequences corroborate phenotypic evidence of trans-Andean variation in the parasitoidMicroctonus hyperodae(Hymenoptera: Braconidae)

2005 ◽  
Vol 95 (4) ◽  
pp. 289-298 ◽  
Author(s):  
L.M. Winder ◽  
C.B. Phillips ◽  
C. Lenney-Williams ◽  
R.P. Cane ◽  
K. Paterson ◽  
...  
Keyword(s):  
Andes Mountains ◽  
South American ◽  
The South ◽  
The Andes ◽  
16S Gene ◽  
Pasture Grasses ◽  
Geographical Populations ◽  
Listronotus Bonariensis ◽  
Microctonus Hyperodae ◽  
Chilean Populations

AbstractEight South American geographical populations of the parasitoidMicroctonus hyperodaeLoan were collected in South America (Argentina, Brazil, Chile and Uruguay) and released in New Zealand for biological control of the weevilListronotus bonariensis(Kuschel), a pest of pasture grasses and cereals. DNA sequencing (16S, COI, 28S, ITS1, β-tubulin), RAPD, AFLP, microsatellite, SSCP and RFLP analyses were used to seek markers for discriminating between the South American populations. All of the South American populations were more homogeneous than expected. However, variation in microsatellites and 16S gene sequences corroborated morphological, allozyme and other phenotypic evidence of trans-Andes variation between the populations. The Chilean populations were the most genetically variable, while the variation present on the eastern side of the Andes mountains was a subset of that observed in Chile.

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