Results 41 to 50 of about 28,563 (227)

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 10., Trichocoleaceae, Geocalycaceae, Acrobolbaceae, Balantiopsidaceae, Lepidoziaceae (Telaranea, Arachniopsis), Calypogeiaceae, Adelanthaceae, Porellaceae, Jubulaceae, Marchantiaceae (Dumortiera), Polytrichaceae [PDF]

open access: yes, 1993
A survey of the families Trichocoleaceae, Geocalycaceae, Acrobolbaceae, Balantiopsidaceae, Lepidoziaceae (Telaranea, Arachniopsis), Calypogeiaceae, Adelanthaceae, Porellaceae, Jubulaceae, Marchantiaceae (Dumortiera) (Hepaticae) and Polytrichaceae (Musci)
Fischer, Eberhard
core  

Agrarian counterpoint

open access: yesAmerican Ethnologist, Volume 53, Issue 2, Page 171-182, May 2026.
Abstract In Colombia's northeastern borderlands, agrarian economies shape how disease risk and stigma are understood and managed. As shown in ethnographic fieldwork in and around the Catatumbo region, cutaneous leishmaniasis—a sandfly‐transmitted disease that produces chronic skin lesions—appears in two radically different guises across adjacent ...
Javier Lezaun, Lina Pinto‐García
wiley   +1 more source

Fotosíntesis en tres poblaciones altitudinales de la planta andina Espeletia schultzii (Compositae)

open access: yesRevista de Biología Tropical, 2006
Resumen Se establece una comparación de algunos parámetros fotosintéticos: actividad Rubisco (Ribulosa 1, 5-bis-fosfato carboxilasa EC 4.1.1.39) contenidos de clorofilas, azúcares solubles totales y proteínas solubles totales y área foliar específica ...
Marisol Castrillo
doaj  

Las agendas interinstitucionales ambientales: un instrumento para la resolución de conflictos ambientales

open access: yesRevista de Estudios Sociales, 2015
Modern society has been saturated by countless environmental conflicts that cause a flagrant violation of human rights. This article focuses on Interinstitutional Environmental Agendas as an appropriate instrument for the resolution of such conflicts ...
Leonardo Güiza Suárez   +3 more
doaj   +1 more source

New occurrences and habitat description of southern Ecuador endemic frog Atelopus exiguus (Anura: Bufonidae) from a conservation hotspot in the high Andes

open access: yesRevista Peruana de Biología, 2022
Atelopus species are classified as a priority taxon for monitoring and conservation, of these A. exiguus is endemic to southern Ecuador and is classified as critically endangered, however, within its known geographic range, little attention has been ...
Pedro X. Astudillo   +3 more
doaj   +1 more source

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 3., description of dollecting sites, the vegetation of Kahuzi-Biega-National Park/Zaire, Nyungwe Forest and Virunga volcanoes/Rwanda [PDF]

open access: yes, 1993
During the BRYOTROP-Expedition in 1991, 71 collecting sites could be visited. These are situated in the Kahuzi-Biega-National Park/Zaire, the Nyungwe Forest and the Virunga volcanoes/Rwanda.
Fischer, Eberhard
core  

GaN and InN nanowires grown by MBE: a comparison

open access: yes, 2006
Morphological, optical and transport properties of GaN and InN nanowires grown by molecular beam epitaxy (MBE) have been studied. The differences between the two materials in respect to growth parameters and optimization procedure was stressed.
A. Greytak   +37 more
core   +2 more sources

The catch of the day: The shortcomings of promoting sustainable seafood consumption in Peru

open access: yesConservation Science and Practice, Volume 8, Issue 5, May 2026.
This study investigates the meaning and application of “catch of the day” in Peru by analyzing 233 news articles and genetically testing 43 fish samples from restaurants. Results show that media frequently use the term as a vague marketing phrase, while genetic testing reveals a 60% mislabeling rate. These findings suggest that “catch of the day” lacks
Daniella Biffi   +2 more
wiley   +1 more source

The Medieval Climate Anomaly and the Little Ice Age in the eastern Ecuadorian Andes [PDF]

open access: yesClimate of the Past, 2013
To better characterize the climate variability of the last millennium in the high Andes, we analyzed the pollen content of a 1150-yr-old sediment core collected in a bog located at 3800 m a.s.l. in the páramo in the eastern Cordillera in Ecuador.
M.-P. Ledru   +6 more
doaj   +1 more source

What Does the Future Hold for Páramo Plants? A Modelling Approach

open access: yesFrontiers in Ecology and Evolution, 2022
Understanding the effects of climate change on tropicalpine biota remains a scientific challenge today. The Andean páramo is the largest and most diverse tropicalpine biogeographical region in the world, and also one of the most threatened as it is prone
Gwendolyn Peyre
doaj   +1 more source

Home - About - Disclaimer - Privacy