Results 31 to 40 of about 1,533,640 (184)

Anticompetitive Vertical Merger Waves [PDF]

, 2013
We develop a model of vertical merger waves leading to input foreclosure. When all upstream firms become vertically integrated, the input price can increase substantially above marginal cost despite Bertrand competition in the input market.
Schutz, Nicolas, Hombert, Johan, Pouyet, Jérôme   +2 more
core   +1 more source

Wood Thrush (Hylocichla mustelina) occupancy patterns reveal sensitivity to low precipitation on nonbreeding grounds in northern Costa Rica

Ibis, EarlyView.
Climatic change and anthropogenic disturbances are reshaping animal populations. Habitat loss and extreme climatic events are particularly strong drivers of declines in species that depend on forested areas. For migratory songbirds, climate and the persistence of suitable habitat over time are fundamental to sustaining populations annually.
Isabel Vargas‐Valverde, Natalie V. Sánchez, Manuel Spínola, Gerardo Avalos   +3 more
wiley   +1 more source

Seasonal shifts in network structure and species roles in a tropical island plant–flower visitor community Cambios estacionales en la estructura de la red de interacciones entre plantas y visitantes florales y en los roles de las especies en una comunidad insular tropical

Insect Conservation and Diversity, EarlyView.
Constant visitation rates across the flowering season masked major shifts in plant and flower visitor interaction structure, specialization, species roles and trait‐driven patterns shaping interaction intensity. Plants and flower visitors changed ecological roles over time, with native flower visitors playing key roles in maintaining network cohesion ...
Alba Costa, Julia Jaca, Christopher N. Kaiser‐Bunbury, Anna Traveset   +3 more
wiley   +1 more source

The host range paradox of Meloidogyne incognita: a physiological and transcriptomic analysis of nine susceptible interactions across six plant orders

New Phytologist, EarlyView.
Phylogenetic distance of host does not explain phenotypic differences of Meloidogyne incognita parasitism at 25 dpi. Summary The plant–parasitic nematode Meloidogyne incognita is the pathogen with the broadest host range among all known biotrophic interactions.
Victor Hugo Moura de Souza, Clement Pellegrin, Vincent C. T. Hanlon, Chongjing Xia, Olaf P. Kranse, Unnati Sonawala, Priya Desikan, Beatrice Senatori, Lucie Bolelli, Etienne G. J. Danchin, Lida Derevnina, Sebastian Eves‐van den Akker   +11 more
wiley   +1 more source

Spatial sampling of the thermospheric vertical wind field at auroral latitudes [PDF]

, 2011
Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica.
Davies, Theo, Conde, Mark, Kosch, Michael, Dyson, Peter, Anderson, Callum   +4 more
core   +4 more sources

The case for an epiphyte area index

New Phytologist, Volume 252, Issue 3, Page 973-980, November 2026.
Three distinct ecosystems where epiphytes contribute a substantial vegetative area in the canopy.
Collin Wischmeyer, Sybil G. Gotsch, Philipp Porada, John T. Van Stan II   +3 more
wiley   +1 more source

La integración vertical en el sistema de salud colombiano [PDF]

Revista de Economía Institucional, 2007
La integración vertical en el sector de la salud es una estructura de gobierno que coordina y controla los servicios de atención, y facilita la colaboración y comunicación entre los oferentes.
Jairo Humberto Restrepo, John Fernando Lopera, Sandra Milena Rodríguez   +2 more
doaj   +1 more source

El efecto del pastoreo sobre la diversidad florística y estructural en pastizales de montaña del centro de Argentina Grazing effects on the floristic and structural diversity in mountain grasslands from central Argentina

Revista Chilena de Historia Natural, 2002
Se estudió el efecto del pastoreo y de su exclusión por 10 años sobre la composición y diversidad florística y sobre la diversidad estructural de pastizales naturales de montaña, en las Sierras de Córdoba (2.200 m de altitud), Argentina.
MARIANA NAI-BREGAGLIO, EDUARDO PUCHETA, MARCELO CABIDO   +2 more
doaj  

Forest under stress: responses and recovery of water relations across scales during the compound drought in summer 2022

New Phytologist, Volume 252, Issue 3, Page 1050-1064, November 2026.
A schematic showing the links of tree‐scale (root‐, stem‐, and leaf‐level) and ecosystem‐scale water relations during the CSAD at CH‐Lae. Summary The summer of 2022 was characterized by compound soil and atmospheric drought (CSAD; low soil water content, SWC, and high vapor pressure deficit, VPD) in Central Europe, threatening forest carbon ...
Ankit Shekhar, Anna K. Gilgen, Annika Ackermann, Liliana Scapucci, Sergio Aranda‐Barranco, Anastasiia Bolshakova, Lukas Hörtnagl, Yi Wang, Franziska Richter, Fabio Turco, Ruikun Gou, Luana Krebs, Iris Feigenwinter, Roland A. Werner, Roman Zweifel, Sophia Etzold, Marius Floriancic, Stefan Osterwalder, Mana Gharun, Nina Buchmann   +19 more
wiley   +1 more source

Diversidad y estructura de especies arbóreas en tres tipos de vegetación forestal al sur de Durango, México

Polibotánica
El objetivo de la presente investigación fue evaluar la diversidad, estructura horizontal y estructura vertical de especies arbóreas de tres tipos de vegetación forestal en el ejido Adolfo Ruíz Cortines al sur del estado de Durango, México.
Edgar Silva-González, José Guadalupe Colín, Oscar Alberto Aguirre-Calderón, Eduardo Javier Treviño-Garza, José Javier Corral-Rivas, Gyorgy Eduardo Manzanilla-Quijada   +5 more
doaj   +1 more source