Browsing by Author "Sanchez, Adriana"
Now showing items 1-20 of 24
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A large-scale phylogeny of polygonaceae based on molecular data
Few studies have addressed the evolutionary relationships within Polygonaceae from a global perspective. The convoluted taxonomic history of Polygonaceae is a major barrier to understanding evolution in this group, and ...
Artículo. 2009
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A taxonomic backbone for the global synthesis of species diversity in the angiosperm order caryophyllales
The Caryophyllales constitute a major lineage of flowering plants with approximately 12?500 species in 39 families. A taxonomic backbone at the genus level is provided that reflects the current state of knowledge and accepts ...
Artículo. 2015
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Dynamic cloud regimes, incident sunlight, and leaf temperatures in espeletia grandiflora and Chusquea tessellata, two representative species of the Andean Páramo, Colombia
The alpine páramo of Chingaza National Park, Colombia, has a highly variable cloud regime typical of many tropical alpine areas. Yet, little information is available regarding the effects of such dynamic sunlight regimes ... Artículo. 2014
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Effects of cumulus clouds on microclimate and shoot-level photosynthetic gas exchange in Picea engelmannii and Abies lasiocarpa at treeline, Medicine Bow Mountains, Wyoming, USA
Here we describe the dynamic effects of cumulus clouds on microclimate and shoot-level photosynthetic gas exchange in saplings of two treeline conifer species—Picea engelmannii and Abies lasiocarpa. Measurements were made ... Artículo. 2015
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Establishing an ant-plant mutualism: foundress queen mortality and acquiring the third partner
In the Neotropics, colonies of the ant Pseudomyrmex dendroicus are found in the hollow stems of Triplaris americana. The ants are obligate inhabitants of the ant-plant and they nest and reproduce exclusively in this ... Artículo. 2016
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Evaluación del efecto del cambio en el uso del suelo a escala de paisaje en La Vega, Cundinamarca
Informe final del proyecto de investigación Evaluación del efecto del cambio en el uso del suelo a escala de paisaje en La Vega, Cundinamarca. Se realizó un análisis de los cambios en la cobertura vegetal de la zona donde ... Artículo. 2021
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Fidelity and promiscuity in an ant-plant mutualism : A case study of Triplaris and Pseudomyrmex
The association between the myrmecophyte Triplaris and ants of the genus Pseudomyrmex is an often-reported example of mutualism but no molecular studies have examined this association to date. In this study, the interspecific ... Artículo. 2015
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Importance of natural cloud regimes to ecophysiology in the alpine species, Caltha leptosepala and Arnica parryi, Snowy Range Mountains, southeast Wyoming, USA
The south-central Rocky Mountains, USA, are characterised by a dry, continental mesoclimate with typical convective cloud formation during the afternoon. Little is known about the specific influence of such predictable ... Artículo. 2015
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Interplay of seasonal sunlight, air and leaf temperature in two alpine páramo species, Colombian Andes
In models of photosynthetic gas exchange, leaf temperature (Tleaf) is often calculated using a combination of derivations of the energy balance equation and measurements of air temperature (Tair). Yet, there are frequently ... Artículo. 2018
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Leaf/shoot level ecophysiology in two broadleaf and two needle-leaf species under representative cloud regimes at alpine treeline
Aims The effects of clouds are now recognized as critically important to the understanding of climate change impacts on ecosystems. Regardless, few studies have focused specifically on the ecophysiological responses of ... Artículo. 2016
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Neotropical ant-plant Triplaris americana attracts Pseudomyrmex mordax ant queens during seedling stages
The association between the myrmecophyte Triplaris and ants of the genus Pseudomyrmex is an often-reported example of mutualism in the Neotropics. The ants colonize the hollow stems of their hosts, and in exchange, the ... Artículo. 2017
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No evidence for photoinhibition of photosynthesis in alpine Caltha leptosepala DC
Alpine plants experience high levels of insolation, as well as cold nighttime temperatures throughout the summer growth period. These two stress factors in combination are now recognized as potentially important limitations ... Artículo. 2015
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Phylogenetic relationships of Afrobrunnichia Hutch. & Dalziel (Polygonaceae) based on three chloroplast genes and ITS
The subfamily Eriogonoideae (Polygonaceae) comprises 31 genera of which 20 are part of the radiation of Eriogonum and allied genera in North America. The eleven remaining genera are all woody, and include species that are ... Artículo. 2009
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Phylogenetic relationships of Triplaris and Ruprechtia: Re-delimitation of the recognized genera and two new genera for tribe Triplarideae (Polygonaceae)
Recent phylogenetic work has increased our knowledge of the relationships within Polygonaceae. However, few studies have explored the generic relationships within Eriogonoideae. Two understudied genera are Triplaris and ... Artículo. 2011
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Phylogenetics of Polygonaceae with an emphasis on the evolution of Eriogonoideae
Polygonaceae has long been recognized as a monophyletic family but the circumscription of groups within it has been in constant flux. Two groups currently recognized are the subfamilies Eriogonoideae and Polygonoideae. An ... Artículo. 2008
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Phytosociological data and herbarium collections show congruent large-scale patterns but differ in their local descriptions of community composition
Question: As a result of recent and substantial digitization efforts, herbaria are becoming important sources of data for vegetation scientists. Are such data sets appropriate to describe composition gradients and ?-diversity? ... Artículo. 2020
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Placing the woody tropical genera of Polygonaceae: A hypothesis of character evolution and phylogeny
Taxonomic groups have often been recognized on the basis of geographic distinctions rather than accurately representing evolutionary relationships. This has been particularly true for temperate and tropical members from ... Artículo. 2010
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Protection against herbivory in the mutualism between Pseudomyrmex dendroicus (Formicidae) and Triplaris americana (Polygonaceae)
Herbivory significantly impacts the growth and reproduction of plants. Many plants have developed ways to defend against herbivores and one common strategy is to associate with ants. In many ant-plant interactions, ants ... Artículo. 2015
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Revised subfamily classification for Polygonaceae, with a tribal classification for Eriogonoideae
Recent phylogenetic studies have provided a revised hypothesis of the evolutionary relationships within Polygonaceae, particularly regarding placement of certain tropical taxa. Based on phylogenetic data, we recognize three ... Artículo. 2011
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Taxonomy of Polygonoideae (Polygonaceae): A new tribal classification
The subfamily Polygonoideae has a world-wide distribution and is an important component of many countries' floras. In this study we present the most comprehensive sampling available to date, including data from three ... Artículo. 2011
