Results 131 to 140 of about 72,462 (294)

Propuesta de un protocolo de evaluación de la calidad ecológica de ríos andinos (CERA) y su aplicación a dos cuencas de Ecuador y Perú [PDF]

open access: yes, 2012
Proposal for an evaluation protocol of the ecological quality of Andean rivers (CERA) and its use in two basins in Ecuador and Peru A Rapid Protocol is presented for Evaluation of the Ecological Status of Andean Rivers (CERA) localized over 2000 m.a.s.l.
Acosta Rivas, Carlos Raúl   +3 more
core  

The collective application of shorebird tracking data to conservation

open access: yesConservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison   +71 more
wiley   +1 more source

Prevalence of traded bird species in key biodiversity areas

open access: yesConservation Biology, EarlyView.
Abstract The use and trade of biodiversity involve tens of thousands of species that are exploited at a range of scales, intensities, and degrees of sustainability. As a result, some are highly threatened. Key biodiversity areas (KBAs) are sites of significance for the persistence of biodiversity identified nationally based on standardized criteria ...
Oscar Morton   +4 more
wiley   +1 more source

La invención de los Andes. Imaginación y representación de los Andes hasta mediados del siglo XIX

open access: yesCuadernos de Geografía: Revista Colombiana de Geografía
La ocupación de los Andes es milenaria pero la representación que de ellos tenemos hoy se construyó en los últimos 500 años. Fueron los cronistas, expedicionarios, conquistadores y científicos quienes, fundiendo sus observaciones y experiencias con ...
Katerinne Carrillo Loaiza   +1 more
doaj   +1 more source

Premiers résultats sur la sismicité de la Cordilllère Blanche (Hautes Andes du Pérou central) [PDF]

open access: yes, 1988
L'étude de la sismicité dans la Cordillère Blanche (Andes, Pérou central) montre que l'activité sismique est concentrée près d'un segment central de la faille qui sépare la Cordillère Blanche du bassin de Callejon de Huaylas et se manifeste de part et d ...
Deverchère, Jacques
core  

A review of participatory mapping in conservation science and practice

open access: yesConservation Science and Practice, EarlyView.
There has been a recent increase and diversification in the use of participatory mapping in the field of conservation, however, methodological standards remain both disjointed and confounding. We conducted a comprehensive review of the conservation participatory mapping literature and synthesized geographical, temporal, and topical trends across a ...
Michael B. Kowalski   +3 more
wiley   +1 more source

Neoliberal urbanism in the metropolitan area of Mendoza : renovations in pericentral areas of Guaymallén [PDF]

open access: yes, 2018
El proyecto neoliberal instaurado en la Argentina durante las últimas décadas del siglo XX, ha logrado penetrar en los espacios urbanos dando por resultado un modelo de desarrollo territorial liderado principalmente por los agentes del mercado, que ...
Magallanes, Rodrigo Martín
core  

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

open access: yesGrassland Science, EarlyView.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo   +5 more
wiley   +1 more source

A Voucher Flora of Diatoms from Fens in the Tanana River Floodplain, Alaska. [PDF]

open access: yesWater (Basel), 2023
Hamilton VA   +5 more
europepmc   +1 more source

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

open access: yesIbis, EarlyView.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy