Results 11 to 20 of about 2,235 (117)

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

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

Migración laboral internacional, barbecho, diversificación económica y tecnología en Nepal

Revista Internacional del Trabajo, Volume 142, Issue 4, Page 753-782, December 2023., 2023
Resumen Se investiga el efecto de la migración laboral internacional en la práctica del barbecho, la adopción de tecnologías de intensificación agrícola y la diversificación de medios de subsistencia en Nepal. Aplicando métodos empíricos que admiten inferencias causales a datos nacionales representativos, se observa que la probabilidad de tener tierras
Apsara KARKI NEPAL, Mani NEPAL, Randall BLUFFSTONE   +2 more
wiley   +1 more source

Interplay of diet and sympatry in the morphological evolution of noctilionoid bats

Journal of Biogeography, Volume 50, Issue 12, Page 2084-2094, December 2023., 2023
Abstract Aim The remarkable ecomorphological diversity of the bat superfamily Noctilionoidea is the result of a diet‐mediated adaptive radiation. Stemming from a putatively insectivorous ancestor, noctilionoid bats diversified to adapt to the widest range of dietary ecologies among mammals.
Camilo López‐Aguirre, John M. Ratcliffe, Mary T. Silcox   +2 more
wiley   +1 more source

Repeated asynchronous evolution of single‐species endemics of ivies (Hedera L.) in Macaronesian archipelagos

Journal of Biogeography, Volume 50, Issue 10, Page 1763-1777, October 2023., 2023
Abstract Aim Evolutionary studies of oceanic island endemics are usually focused on lineages that have experienced in situ radiation, while those that speciated once on the island or archipelago but have not further diversified (single‐species endemics) remain understudied.
Angélica Gallego‐Narbón, Alejandro Alonso, Virginia Valcárcel, Mario Fernández‐Mazuecos   +3 more
wiley   +1 more source

The effects of a large industrial investment on employment in a remote and sparsely populated area using a synthetic control approach

Regional Science Policy &Practice, Volume 15, Issue 7, Page 1553-1576, September 2023., 2023
Abstract This article examines the impact of establishing a large industrial manufacturing entity on employment and the labor market in a remote, sparsely populated part of Sweden, focusing on how it affects total regional employment because industrial policies aiming to attract investment and reignite employment in stagnating regions have been a ...
Evans Korang Adjei, Rikard Eriksson, Johan Lundberg   +2 more
wiley   +1 more source

Examination of related diversification in laggard regions

Papers in Regional Science, Volume 102, Issue 4, Page 851-869, August 2023., 2023
Abstract In regions of meagre technology and market activities, traditional innovation metrics (patents and trademarks filed at international offices) may provide limited insight of the mechanisms of regional diversification and therefore policies, including smart specialization.
Kyriakos Drivas, Claire Economidou, Ioannis Kaplanis, Maria Theano Tagaraki   +3 more
wiley   +1 more source

Nutrient‐based species selection is a prevalent driver of community assembly and functional trait space in tropical forests

Journal of Ecology, Volume 111, Issue 6, Page 1218-1230, June 2023., 2023
Our results demonstrate that soil nutrient‐based species selection is a prevalent driver of community assembly in tropical forests, a process mediated by key functional traits within the leaf and wood economics spectrum. Functional space size and its filling increase with soil nutrient concentration, whereas niche vacancy decreases.
Guille Peguero, Fernando Coello, Jordi Sardans, Dolores Asensio, Oriol Grau, Joan Llusià, Romà Ogaya, Ifigenia Urbina, Leandro Van Langenhove, Lore T. Verryckt, Clément Stahl, Laëtitia Bréchet, Elodie A. Courtois, Jérôme Chave, Bruno Hérault, Ivan A. Janssens, Josep Peñuelas   +16 more
wiley   +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