Results 101 to 110 of about 381,647 (302)

Rediscovery of Passiflora clypeophylla (subgenus Decaloba): a highly threatened and narrow endemic species found within a karstic canyon in Guatemala

open access: yesNordic Journal of Botany, EarlyView.
Passiflora clypeophylla, an endemic species to the Guatemalan karstic forests last seen in 1889 and deemed extinct, was rediscovered in the Department of Alta Verapaz, east of Cobán. The species was known only from a single specimen hailed from the type locality, Rubel Cruz, where it has been found again. An additional location has been identified in a
J.R. Kuethe   +3 more
wiley   +1 more source

Análisis situacional de salud bucodental en el municipio Rangel, estado Mérida, Venezuela.

open access: yesRevista GICOS, 2021
La salud bucodental debe ser analizada considerando los factores condicionantes, el proceso salud-enfermedad, la respuesta social a los eventos de salud, para posteriormente elaborar la identificación y priorización de los problemas de salud.
Juan León   +5 more
doaj  

Manual of tropical bryology [PDF]

open access: yes, 2003
Bryophytes belong to the oldest land plants. They existed already in the Palaeozoic 300 mio years ago in forms which were hardly different from the extant species. They remained relatively unchanged with relatively low evolution rates (and are thus often
Enroth, Johannes   +7 more
core  

The relative roles of in situ diversification and lineage dispersal underlying diversity patterns at the assemblage level

open access: yesOikos, 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

Modificaciones de los lípidos séricos de ratas suplementadas con cobre por vía oral

open access: yesArchivos Latinoamericanos de Nutrición
Los trastornos en el metabolismo de los lípidos durante la carencia de cobre en las ratas son muy conocidos. La deficiencia de Cu se asocia con la retención espontánea de hierro hepático.
Oscar M. Alarcón-Corredor   +5 more
doaj  

Análisis didáctico en la práctica de la formación permanente de profesores de matemáticas de secundaria [PDF]

open access: yes, 2012
Este volumen presenta los informes finales de los seis grupos de la primera promoción de MAD, la concentración en Educación Matemática de la maestría en Educación del Centro de Investiga-ción y Formación en Educación (CIFE) de la Universidad de los Andes.
Gómez, Pedro
core  

When Politics Shapes Administration: Bureaucratic Autonomy, Policy Role Separation, and Organizational Capacity in an Institutionally Weak Public Administration

open access: yesPublic 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

Bioactive indicators related to bioelements of eight unifloral honeys

open access: yesArchivos Latinoamericanos de Nutrición
Honey is the most popular bee product used by man, with nutritional and medicinal purposes. Its great diversity is attributed to numerous factors (bee type, visited flora, environment, and management).
Patricia Vit   +5 more
doaj  

Cultivating biodiversity: When conservation in agricultural landscapes embodies farmers' values

open access: yesPeople and Nature, EarlyView.
Abstract Efforts to conserve biodiversity in agricultural landscapes across Europe remain insufficient, as biodiversity further declines. This is sometimes ascribed to conservation policy failing to address the meanings and values that farmers attribute to the social and ecological contexts shaping their decisions influencing biodiversity.
Maria L. Kernecker   +4 more
wiley   +1 more source

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

open access: yesPeople and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson   +18 more
wiley   +1 more source

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