Results 131 to 140 of about 23,290 (251)

Conservation genomics of Pecos pupfish (Cyprinodon pecosensis)

Journal of Fish Biology, EarlyView.
Abstract The Pecos pupfish, Cyprinodon pecosensis, is an imperilled freshwater fish found in arid regions of Texas and New Mexico (USA). The species faces multiple challenges to persistence including reductions in suitable habitat, water shortages, as well as hybridization and competition with an introduced congener (sheepshead minnow, C.
Elizabeth P. Dolan, Andrew T. Fields, Megan G. Bean, Robyn R. Doege, Joanna L. Hatt, Kevin W. Conway, David S. Portnoy   +6 more
wiley   +1 more source

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia

Journal of Anatomy, Volume 246, Issue 4, Page 558-574, April 2025.
Here, we present the most complete dataset to date on the endosseous labyrinths of extant crocodylians. Using 3D geometric morphometrics, we show that allometry constitutes a major contributor of the shape variation of the crocodylian endosseous labyrinths and that the development of this structure is likely linked to the braincase conformation, in all
Yohan Pochat‐Cottilloux, Gwendal Perrichon, Lionel Hautier, Nicolas Rinder, Romain Amiot, Irena Raselli, Jérôme Adrien, Joël Lachambre, Vincent Fernandez, Jeremy E. Martin   +9 more
wiley   +1 more source

Ecoturismo comunitario y conservación ambiental: la experiencia de La Ventanilla, Oaxaca, México

Estudios Sociales, 2013
Mientras los apoyos financieros y logísticos para promover la conservación en comunidades campesinas e indígenas aumentan, la literatura sobre ecoturismo comunitario, que es una de sus estrategias más destacadas, está llena de contradicciones y ...
David Vargas del Río, Ludger Brenner
doaj  

Depredación del Río Tunjuelo

, 2017
El proyecto se plantea dentro del marco conceptual teórico e histórico, donde busca por medio de la recuperación de las fuentes hídricas restaurar la memoria histórica del sector. Se desarrolla en el río Tunjuelo, localizado al sur de la ciudad de Bogotá,
Ávila Buitrago, Jorge Luis
core  

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

Journal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston, Daniela Schwarz, Paul Upchurch, Stephen F. Poropat, Patrick Asbach, Philip D. Mannion   +5 more
wiley   +1 more source

Militancia política y labor artística de David Alfaro Siqueiros: de Olvera Street a Río de la Plata

Estudios de Historia Moderna y Contemporánea de México, 2008
El texto aborda una de las etapas más importantes en la vida del pintor David Alfaro Siqueiros, la que transcurrió mientras estuvo exiliado en las ciudades de Los Ángeles, Montevideo y Buenos Aires durante 1932 y 1934 en Nueva York en 1936 y por último a
Alicia Azuela de la Cueva
doaj  

Mapping the Landscape of the Economics of AI Literature: Gaps and Opportunities for Research and Policy

Journal of Economic Surveys, EarlyView.
ABSTRACT This paper investigates the evolving landscape of research on the economics of artificial intelligence (AI). Using topic modeling on a corpus of over 4,600 academic papers, we identify the dominant themes that have shaped the literature to date and highlight areas that remain relatively underexplored. In addition, we assess the extent to which
Lucy Hampton, John Lourenze Poquiz
wiley   +1 more source

Governing Transnational Commons: How International Treaties and Multi‐Stakeholder Organizations Shape Cooperation and Conflict

Journal of Management Studies, EarlyView.
Abstract When common‐pool resources such as freshwater, clean air, and fisheries span national borders, the collective action problems encountered are particularly severe. This study explores the role of polycentric governance systems in overcoming these pressing problems, which frequently underlie global grand challenges. Integrating political economy
Amol M. Joshi, David Antons, Erk P. Piening, Christina Dienhart, Torsten‐Oliver Salge   +4 more
wiley   +1 more source

When Infrastructure Pushes Residents Out: High‐Speed Rail and Tourism Outflows

Journal of Regional Science, EarlyView.
ABSTRACT This paper examines the impact of high‐speed rail (HSR) connectivity on both inbound and outbound tourism inflows. Leveraging the opening of a new HSR line connecting a northern Spanish region with mainland Spain, we employ a triple difference‐in‐differences design combined with inverse probability weighting (IPW) to evaluate the causal effect
David Boto‐García, José Francisco Baños‐Pino, Alejandro Cazón‐Flores   +2 more
wiley   +1 more source

Influence and convergence to higher standards: The dual examination of pharmaceutical patents in Brazil

The Journal of World Intellectual Property, EarlyView.
Abstract Between 2001 and 2021, pharmaceutical patent applications filed in Brazil were examined by the patent office (INPI) and the national health regulator (Anvisa). This paper investigates how health regulators can contribute to patent examination by shifting the set of criteria cited as grounds for 2589 negative decisions from both entities ...
Eduardo Mercadante
wiley   +1 more source