Results 21 to 30 of about 3,907 (139)

Broad Protein Spectrum in Stored Pollen of Three Stingless Bees from the Chaco Dry Forest in South America (Hymenoptera, Apidae, Meliponini) and Its Ecological Implications

open access: yesPsyche: A Journal of Entomology, Volume 2015, Issue 1, 2015., 2015
Protein content of pollen stored by three meliponine species was variable from 9.78% (less than half the value considered as optimal to brood development in Apis mellifera) in type Capparis tweediana‐C. speciosa to more than 26% in type Maytenus vitis-idaea and some Prosopis samples.
Favio Gerardo Vossler, David Roubik
wiley   +1 more source

Los microsatélites revelan una alta diferenciación genética entre las poblaciones nativas de Geoffroea decorticans en el desierto de Atacama chileno

open access: yesBoletín de la Sociedad Argentina de Botánica, 2019
Introducción y objetivos: Las condiciones extremas en el Desierto de Atacama de Chile son un obstáculo importante para la supervivencia de cualquier organismo.
Roberto Contreras   +2 more
doaj   +1 more source

Saltcedar (Tamarix ramosissima) Invasion Alters Decomposer Fauna and Plant Litter Decomposition in a Temperate Xerophytic Deciduous Forest

open access: yesAdvances in Ecology, Volume 2014, Issue 1, 2014., 2014
Plant invasions may alter the soil system by changing litter quality and quantity, thereby affecting soil community and ecosystem processes. We investigated the effect of Tamarix ramosissima invasion on the decomposer fauna and litter decomposition process, as well as the importance of litter quality in decomposition.
José Camilo Bedano   +4 more
wiley   +1 more source

New Data on Food Consumption in Pre‐Hispanic Populations from Northwest Argentina (ca. 1000–1550 A.D.): The Contribution of Carbon and Nitrogen Isotopic Composition of Human Bones

open access: yesJournal of Anthropology, Volume 2013, Issue 1, 2013., 2013
We present data on carbon and nitrogen isotopic composition of human bones from Tolombón (Calchaqui Valley, Salta) and Esquina de Huajra (Quebrada de Humahuaca, Jujuy) sites located in Northwest Argentina (NWA). Both are complex archaeological residential settlements ascribed to the Regional Development Period (ca.
María Soledad Gheggi   +2 more
wiley   +1 more source

A revision of the neotropical genus Anahi Martínez (Coleoptera: Scarabaeidae: Melolonthinae) with the description of two new species [PDF]

open access: yes, 2007
El género Anahi Martínez del sur del Neotrópico es comprensivamente revisado y ahora contiene tres especies: A. dentata Ocampo & Ruiz- Manzanos especie nueva, A. guaraniticus Martínez y A. oblivia Ocampo & Ruiz-Manzanos especie nueva. Las nuevas especies
Ocampo, Federico Carlos   +1 more
core   +2 more sources

Recolección, procesamiento y consumo de frutos silvestres en el noroeste semiárido argentino. Casos actuales con implicancias arqueológicas [PDF]

open access: yesLa Zaranda de Ideas, 2006
La presente investigación aborda etnográficamente el estudio inherente a la recolección, procesamiento y consumo de frutos de algarrobo y chañar, en las provincias de Santiago del Estero y Catamarca (Argentina).
Germán G. Figueroa, Mariana Dantas
doaj   +1 more source

The Usefulness of Edible and Medicinal Fabaceae in Argentine and Chilean Patagonia: Environmental Availability and Other Sources of Supply

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2012, Issue 1, 2012., 2012
Fabaceae is of great ethnobotanical importance in indigenous and urban communities throughout the world. This work presents a revision of the use of Fabaceae as a food and/or medicinal resource in Argentine‐Chilean Patagonia. It is based on a bibliographical analysis of 27 ethnobotanical sources and catalogues of regional flora.
Soledad Molares   +2 more
wiley   +1 more source

An efficient protocol to perform genetic traceability of tissue and foods from Geoffroea decorticans

open access: yes, 2019
The quality of a DNA isolation method depends, among others, on the target tissue and the metabolites therein. Geoffroea decorticans Burkart (chanar) is a species that has nutritional and pharmacological potential.
Aguayo, F.   +3 more
core   +1 more source

La restauración en comunidad de la iglesia de San Pedro de Atacama

open access: yesLoggia, Arquitectura & Restauración, 2017
En medio del gran desierto de Atacama caracterizado por una gran aridez y amplitud térmica, se ubica en un fértil oasis, la iglesia de San Pedro de Atacama.
Beatriz Yuste Miguel, Magdalena Pereira
doaj   +1 more source

Effect of repeated annealing on the synthetic and electrical properties of Bi2-(x+y)PbxAgy Sr2Ca2Cu3O10+δ electrically superconductor

open access: yesTikrit Journal of Pure Science, 2019
This research involved the preparation of Bi2-(x+y)PbxAgy Sr2Ca2Cu3O10+δ with different concentrations of (x,y) which are (x=y=0)(x=0.05,y=0.15)(x=y=0.1)(x=0.15,y=0.05) by the method of solid state reaction under hydrostatic pressure of 8 ton /cm2  and ...
Khalid Hamdi Razzeg   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy