Chronicle of a death foretold: Extinction of the small-size tropical glaciers of Popocatépetl volcano (Mexico)

Granados, Hugo Delgado; Julio-Miranda, P.; Huggel, Christian; Valle, S Ortega del; Alatorre‐Ibargüengoitia, M. A.

doi:10.1016/j.gloplacha.2006.07.010

Cited by 31 publications

(23 citation statements)

References 28 publications

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“…Currently, most glaciers of the world are retreating rapidly as a result of global warming (Delgado Granados et al, 2007). Glaciers of Mount Tronador Patagonia, Argentina, are a clear example, having experienced constant retreat during the past 100 years (Villarosa et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Yeasts from glacial ice of Patagonian Andes, Argentina

García

Brizzio

Broock

2012

FEMS Microbiol Ecol

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Glacial ice and snow are known habitats for cold-adapted microorganisms. Research on cold-adapted yeast biodiversity from Perito Moreno and Mount Tronador glaciers (Patagonia, Argentina), and production of extracellular enzymatic activity at low temperatures (5 and 18 °C), was performed and described in this study. Ninety percent (90%) of the isolates were basidiomycetous; 16 genera and 29 species were identified. Twenty-five percent (25%) of total isolates corresponded to psychrophilic yeasts, whereas 75% were psychrotolerant yeasts. Eighty-five percent (85%) of all isolates had at least one enzymatic activity. Multiple correspondence analysis and cluster classification revealed a relationship between certain genera and some enzymatic activities. Cold-adapted yeast isolates were able to hydrolyze natural compounds (casein, lipids, starch, pectin, and carboxymethylcellulose) at low temperatures, suggesting a significant ecological role of these organisms as organic matter decomposers and nutrient cyclers. These yeasts are especially relevant for metabolic and ecological studies, as well as for yeast-based biotechnological process at low temperatures.

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Section: Introductionmentioning

confidence: 99%

Yeasts from glacial ice of Patagonian Andes, Argentina

García

Brizzio

Broock

2012

FEMS Microbiol Ecol

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“…Also, it will be important to expand the studies of the mechanisms that enable survival in cold temperatures, including the production of novel molecules with biotechnological applications, such as cold active enzymes and antifreeze proteins [9][10][11]27]. The genetic diversity present in permanently cold habitats like glacial ice or permafrost needs to be urgently preserved, since most of these are endangered as a result of global warming [28,29].…”

Section: Species Delineation and Phylogenetic Placementmentioning

confidence: 99%

Novel yeast taxa from the cold: description of Cryolevonia giraudoae sp. nov. and Camptobasidium gelus sp. nov.

García

Trochine

Uetake

et al. 2020

International Journal of Systematic and Evolutionary Microbiology

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Twenty-one psychrophilic yeast isolates related to the Camptobasidiaceae family in the Microbotryomycetes class were obtained from ice collected from cold environments worldwide. A new psychrophilic species from the recently described genus Cryolevonia, Cryolevania giraudoae is proposed to accommodate 18 isolates from Patagonia (Argentina) and Antarctica (holotype CRUB 2086T). In addition, a new psychrophilic species in the genus Camptobasidium is described as Camptobasidium gelus sp. nov. (holotype CBS 8941T), based on three isolates from glacial ice in the Russel glacier (Greenland ice sheet) and Antarctica. The strict psychrophilic profile is the salient feature of both novel species.

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“…The available information on the distribution of glaciers at the study sites indicates that the glacier of Iztaccihuatl has retreated to 4% of its size within the past 150 years (Schneider et al 2008, Cortés-Ramos andDelgado-Granados 2015), while the glacier of Popocatépetl has disappeared because of recent volcanic activity (Delgado Granados et al 2007 …”

Section: Plants and Glaciersmentioning

confidence: 99%