Results 51 to 60 of about 72,462 (294)
A simple index for assessing cumulative human impacts on mountain lakes
Limnology and Oceanography: Methods, EarlyView.Abstract Mountain lakes are highly sensitive ecosystems and effective sentinels of environmental change, yet the exposure and magnitude of the human footprint remain poorly quantified. In this study, we develop a simple and non‐invasive abiotic index to assess cumulative pressures on mountain lakes. The proposed index integrates eight variables grouped
Clara Sáez +3 more
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Nordic Journal of Botany, EarlyView.Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang +6 more
wiley +1 more source
Bio-grafía, 2013 El presente artículo es producto de los desarrollos investigativos y reflexivos de la experiencia educativa “Construcción de subjetividades políticas de niñas, niños y jóvenes quechuahablantes, en el contexto de la experiencia ‘Comunidades Andinas ...
MARCO TULIO PEÑA
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Oikos, EarlyView.Speciation, extinction, and dispersal are the historical processes influencing the spatial distribution of lineages and strongly influence diversity patterns. Here, we apply a recently developed methodological approach to quantify the relative legacies in situ diversification history (i.e.
Arthur Vinicius Rodrigues +2 more
wiley +1 more source
Caldasia, 1986 A preliminary taxonomic revision of the brorne-grass species is found in Bolivia and Perú, with keys, drawings (mostly of type specimens), synonymies, descriptions and extensive specimen citations, 5 species are recognized: Bromus catharticus, B. lanatus,
Pinto Escobar Polidoro
doaj
Public Administration and Development, EarlyView.ABSTRACT This study examines the impact of administrative autonomy and the separation of roles in public policy on organizational capacity within hybrid public administration systems, particularly in Colombia. It explores the dynamics between elected officials and civil servants, focusing on how the division of responsibilities and the autonomy granted
Camilo Ignacio González +1 more
wiley +1 more source
Ecología Austral, 2016 La región de los Andes Tropicales es considerada como una región muy vulnerable al cambio climático porque presenta una alta diversidad y endemismo y porque posee una gran variabilidad altitudinal.
Ana C. Godoy-Burki
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Centralism, de-centralism and bio-regionalism
, 1996 Two of the most important social movements in Canada today are the radical and social-democratic Left (exemplified by the Action Canada Network), and the environmental movement - in one of its more radical manifestations, as bioregionalism. At its best, the environmental movement is very concerned about the threat to sustainability posed by the growing
Cholette, Kathy +2 more
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Public Administration and Development, EarlyView.ABSTRACT Although some studies focus on how bureaucrats' interactions with one another affect performance, they rarely focus on why these public servants collaborate. Bureaucrats' collaboration matters because it can significantly contribute to achieving policy goals.
Nathalie Mendez
wiley +1 more source
Generalized Centrality Aggregation and Exclusive Centrality
, 2020 There are several applications that benefit from a definition of centrality which is applicable to sets of vertices, rather than individual vertices. However, existing definitions might not be able to help us in answering several network analysis questions.
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