Results 11 to 20 of about 2,386 (115)

Evidence of introgression amid phylogenetic conflict in Brachyotum, a plant radiation from the Tropical Andes. [PDF]

Am J Bot
Abstract Premise The species‐rich flora of Tropical Andes underwent multiple rapid and recent diversifications, yet resolving their evolutionary histories remains challenging despite increasing phylogenomic data. Here, we examined phylogenomic conflict in Brachyotum (Melastomataceae) to identify sources preventing its resolution.
Paredes-Burneo D, Bedoya AM, Michelangeli FA, Majure LC, Ulloa Ulloa C, Lagomarsino LP.   +5 more
europepmc   +2 more sources

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

New Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ, Piñeiro R, Nicholls JA, Gaynor ML, Lewis GP, Fonseca Pezzini F, Dexter KG, Kidner C, Pennington RT, Twyford AD.   +9 more
europepmc   +2 more sources

Toward a Biocultural Synthesis of the Peopling of the Americas: Introduction to the Special Issue. [PDF]

Am J Biol Anthropol
ABSTRACT This article introduces the special issue Toward a Biocultural Synthesis of the Peopling of the Americas, which brings together contributions that explore the origins and diversity of Indigenous populations across North, Central, and South America and the Caribbean. The volume grew out of an invited symposium held at the 90th Annual Meeting of
Menéndez LP, Hubbe M.
europepmc   +2 more sources

Patterns of Interploidy Admixture in Polyploid Complexes: Insights From Thymus Sect. Mastichina (Lamiaceae). [PDF]

Mol Ecol
ABSTRACT Understanding gene flow between ploidy levels in polyploid complexes is essential for species delimitation and conservation. This study explores evolutionary dynamics in the polyploid complex Thymus sect. Mastichina (Lamiaceae), comprising three taxa: T. mastichina subsp. mastichina, T. mastichina subsp.
García-Cárdenas FJ, Ortiz MÁ, Del Valle JC, Doblas-Pruvost D, de la Estrella M, Nieto-Lugilde D, Pokorny L, Berjano R.   +7 more
europepmc   +2 more sources

Spatiotemporal Dynamics of Non-Ecological Speciation in Rubyspot Damselflies (Hetaerina spp.). [PDF]

Mol Ecol
ABSTRACT Non‐ecological speciation is a common mode of speciation, which occurs when allopatric lineages diverge in the absence of pronounced ecological differences. Yet, relative to other speciation mechanisms, non‐ecological speciation remains understudied.
Patterson C, Brennan A, Cowling H, González-Rodríguez A, Grether GF, Mendoza Cuenca L, Springer M, Vega-Sánchez YM, Drury J.   +8 more
europepmc   +2 more sources

Diversificación de la actividad turística de balnearios: el caso de Pehuén Co, Argentina

Cuadernos de Turismo, 2016
Para desarrollar un Manejo Integral Costero (MIC) de localidades turísticas es necesario identificar posibles alternativas que ayuden a diversificar su turismo.
María Luján Bustos, Federico Ferrelli, María Cintia Piccolo   +2 more
doaj   +1 more source

Eficiencia y diversificación de carteras compactas en el contexto de la reforma al sistema de pensiones en Chile

Multidisciplinary Business Review
Este artículo tiene como objetivo comparar los nive-les de eficiencia en la gestión de carteras compactas de alta, media y baja capitalización bursátil.
Renato Balbontín Sanhueza, Rodrigo Blanch Carrrizo   +1 more
doaj   +1 more source

The Edification of Manuela Xiqués: Slavery, Finance, Biography, and the Construction of Modern Barcelona

Gender &History, EarlyView.
ABSTRACT An analysis of the dual biographies, economic and domestic, of Manuela Xiqués, an enslaver from nineteenth‐century Cuba and Spain, deepens our understanding of the role of European and Creole women in the nineteenth‐century Atlantic. This essay foregrounds the role of literature, namely family biography, as a locus of the processes of ...
Lisa Surwillo, Martín Rodrigo Alharilla
wiley   +1 more source

Diagnóstico de la maricultura en Ecuador: oportunidades y desafíos

AquaTechnica, 2023
La acuicultura es considerada como un mecanismo para satisfacer la creciente demanda de proteínas de la población mundial, mientras que la maricultura tiene un impacto mínimo al ambiente en comparación con otras actividades de producción en los océanos ...
Jorge Roberto Jiménez Velastegui , Gladys Torres   +1 more
doaj   +1 more source

A global assessment of animal community responses to agricultural management

Conservation Biology, EarlyView.
Abstract Transitions in agricultural management through crop and noncrop diversification on intensively managed croplands or pastures have benefited biodiversity. However, the extent to which agricultural management benefits species communities present in undisturbed ecosystems remains largely unclear.
Susana López Rodríguez, Hanneke van ‘t Veen, Solen Le Clec'h, Rob Alkemade   +3 more
wiley   +1 more source