Results 31 to 40 of about 90,106 (261)

Extreme Orographic Rainfall in the Eastern Andes Tied to Cold Air Intrusions

open access: yesFrontiers in Environmental Science, 2019
Long-duration localized heavy rainfall (> 6 h, < 10 km2) was recorded by raingauges on October 4, 2013 at mid-elevations (~ 1, 500 m) in the Peruvian Andes, which was not apparent in infrared or microwave measurements from either geostationary or ...
Masih Eghdami, Ana P. Barros
doaj   +1 more source

Monitoring long-term forest dynamics with scarce data: a multi-date classification implementation in the Ecuadorian Amazon

open access: yesEuropean Journal of Remote Sensing, 2019
Monitoring long-term forest dynamics is essential for assessing human-induced land-cover changes, and related studies are often based on the multi-decadal Landsat archive.
Fabián Santos   +2 more
doaj   +1 more source

Entomological characterization of Aedes mosquitoes and arbovirus detection in Ibagué, a Colombian city with co-circulation of Zika, dengue and chikungunya viruses

open access: yesParasites & Vectors, 2021
Background Dengue, Zika and chikungunya are arboviruses of significant public health importance that are transmitted by Aedes aegypti and Aedes albopictus mosquitoes.
María C. Carrasquilla   +10 more
doaj   +1 more source

High Impact Weather Events in the Andes

open access: yesFrontiers in Earth Science, 2020
Owing to the extraordinary latitudinal extent, a strong orographic variability with very high mountain tops, and the presence of deep valleys and steep slopes, the Andes and the population of the region are highly prone and vulnerable to the impacts of a
Germán Poveda   +6 more
doaj   +1 more source

River connectivity and climate behind the long‐term evolution of tropical American floodplain lakes

open access: yesEcology and Evolution, 2021
This study presents the long‐term evolution of two floodplains lakes (San Juana and Barbacoas) of the Magdalena River in Colombia with varying degree of connectivity to the River and with different responses to climate events (i.e., extreme floods and ...
Laura Lopera‐Congote   +4 more
doaj   +1 more source

Migration and forests in the Peruvian Amazon: a review [PDF]

open access: yes, 2019
This paper reviews the literature on the links between migration and forests in the Peruvian Amazon. It highlights not only the complexity of the migrant–forest interface in Peru but also the relative lack of research on these dynamics.
Cronkleton, Peter, Menton, Mary
core   +1 more source

Millennial-scale vegetation changes in the tropical Andes using ecological grouping and ordination methods [PDF]

open access: yesClimate of the Past, 2016
We compare eight pollen records reflecting climatic and environmental change from northern and southern sites in the tropical Andes. Our analysis focuses on the last 30 000 years, with particular emphasis on the Pleistocene to Holocene transition.
D. H. Urrego   +10 more
doaj   +1 more source

An annotated checklist of freshwater copepoda (crustacea, hexanauplia) from continental Ecuador and the Galapagos archipelago [PDF]

open access: yes, 2019
An annotated checklist of the free-living freshwater Copepoda recorded in different regions in Ecuador (including the Amazon, the Andes, the coastal region, and the Galapagos Islands) is here provided.
Corgosinho P. H. C.   +6 more
core   +1 more source

A Conceptual Model for Rehabilitation of Puna Grassland Social–Ecological Systems

open access: yesMountain Research and Development, 2023
The impacts of both climate change and socioeconomic processes are driving the degradation of mountains and the ecological services they provide worldwide. In the tropical Andes, compounding glacier retreat, altered hydrological and precipitation regimes
Angela Mendoza-Ato   +3 more
doaj   +1 more source

Shifts in leaf litter breakdown along a forest–pasture–urban gradient in Andean streams [PDF]

open access: yes, 2016
Tropical montane ecosystems of the Andes are critically threatened by a rapid land-use change which can potentially affect stream variables, aquatic communities, and ecosystem processes such as leaf litter breakdown.
Breuer, Lutz   +5 more
core   +1 more source

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