Results 41 to 50 of about 1,647,890 (313)

Bases conceptuales para la elaboración de una nueva agenda sobre los recursos naturales [PDF]

, 2005
Incluye BibliografíaResumen Este trabajo propone las bases conceptuales para elaborar una nueva agenda sobre los recursos naturales y se inscribe dentro de la línea de investigación sobre "El Desarrollo Productivo y la Gestión Sostenible del Patrimonio ...
Sánchez Albavera, Fernando
core  

First evidence of a mandibular crest in Brasileodactylus Kellner, 1984 (Pterosauria, Pteranodontoidea, Anhangueridae), with comments on pterosaur headcrests

The Anatomical Record, EarlyView.
Abstract Brasileodactylus araripensis Kellner, 1984, is a toothed pterosaur from the Lower Cretaceous Romualdo Formation of the Araripe Basin, Brazil. Traditionally regarded as crestless, the species has been central to debates on anhanguerid taxonomy, as most members of the clade possess well‐developed sagittal cranial or dentary crests.
Anderson da Silva Nascimento, Rubi Vargas Pêgas, Alessandra Silveira Machado, Ricardo Tadeu Lopes, Fabiana Rodrigues Costa   +4 more
wiley   +1 more source

Synopsis of the genus Tamarix (Tamaricaceae) in the Iberian Peninsula and Balearic Islands

Anales del Jardín Botánico de Madrid, 2022
A taxonomic revision of the genus Tamarix for the Iberian Peninsula and Balearic Islands is provided, updating the Flora iberica account published in 1993. A new dichotomous key for the Iberian and Balearic species is also included.
José Luis Villar, María Ángeles Alonso, Manuel B. Crespo   +2 more
doaj   +1 more source

Los recursos naturales en los tratados de libre comercio con Estados Unidos [PDF]

, 2005
Incluye BibliografíaResumen Este estudio tiene como objetivo determinar en qué medida los Tratados de Libre Comercio (TLC); influyen en la gestión de los recursos naturales y si éstos pueden contribuir a lograr que las actividades productivas ...
Ruiz Caro, Ariela
core  

Recursos naturales y conflicto

Diálogos de saberes, 2013
La producción de palma africana ejemplifica una de las más claras tendencias mundiales de cambios en el comercio: primero, la prioridad no es la producción de alimentos, en tanto no se produce comida y, en segundo lugar, el campesino, sujeto cultural, social y político tradicional del proceso productivo, es completamente desplazado (Molano, 2012).El ...
Rosalvina Otálora Cortés, Oscar Javier Ayala Rodríguez   +1 more
openaire   +2 more sources

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

Biological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón, José A. Sánchez‐Zapata, Travis L. DeVault, Wayne M. Getz, Zebensui Morales‐Reyes, Daniel Redondo‐Gómez, Lara Naves‐Alegre, Solange A. Batista‐Nunes, Esther Sebastián‐González, Juan M. Pérez‐García, Kelly A. Waters, Thijs van Overveld, Craig Smith, Nuria Selva, Thomas A. Schlacher, Graeme Ruxton, Jesús Rodríguez, Martina‐M. Quaggiotto, Paula L. Perrig, Norman Owen‐Smith, Thomas M. Newsome, Isabel Navas, Yoshihiro Nakashima, Ana Mateos, Carlos Martínez‐Carrasco, Daniel Martín‐Vega, Berta Martín‐López, Antoni Margalida, Sergio A. Lambertucci, Adam Kane, Kevin Healy, Akane Hashizume, Antonio J. García‐Fernández, José A. Donázar, M. Eric Benbow, James C. Beasley, Philip S. Barton, Kathleen A. Alexander, Eneko Arrondo   +38 more
wiley   +1 more source

Food‐solicitation displays in nestling birds: still begging for answers

Biological Reviews, EarlyView.
ABSTRACT Nestling begging is a key model for understanding animal communication and parent–offspring conflict. Dynamic begging displays are often interpreted as costly, honest signals of need, with honesty maintained by viability costs, as proposed in Godfray's influential signalling model.
Daniel Parejo‐Pulido, Tomás Redondo
wiley   +1 more source

Acorn removal and seedling age determine oak (Quercus ilex L. and Q. suber L.) restoration outcome in ungulate-dominated Mediterranean environments

Annals of Forest Science
Key message We test the potential benefits of planting 2-year vs. 1-year-old seedlings to restore Mediterranean oak-dominated systems. Planting 2-year-old Quercus suber L.
Marta Peláez, Guillermo Carranza, Daniel Gambra-Caravantes, Jesús Rodríguez-Calcerrada, Guillermo González-Gordaliza, José Maria Fedriani, Luis Gil, Ramón Perea   +7 more
doaj   +1 more source

Dinámica y conservación de la flora del matorral xerófilo de la Reserva Ecológica del Pedregal de San Ángel (D. F., México)

Botan‪ical Sciences, 2004
El matorral xerófilo del derrame del Xitle ha sido destruido casi completamente por el desarrollo urbano de la ciudad de México. La Reserva Ecológica del Pedregal de San Ángel (1.77 km2) protege una de las porciones remanentes más importantes. A pesar de
Silvia Castillo-Argüero, Gabriela Montes-Cartas, Marco Antonio Romero-Romero, Yuriana Martínez-Orea, Patricia Guadarrama-Chávez, Irene Sánchez-Gallén, Oswaldo Núñez-Castillo   +6 more
doaj   +1 more source

Biological Control of Phototrophic Biofilms in a Show Cave: The Case of Nerja Cave

Applied Sciences, 2020
Cyanobacteria and microalgae are usually found in speleothems, rocks and walls of show caves exposed to artificial lighting. These microorganisms develop as biofilms coating the mineral surfaces and producing aesthetic, physical and chemical ...
Valme Jurado, Yolanda del Rosal, Jose Luis Gonzalez-Pimentel, Bernardo Hermosin, Cesareo Saiz-Jimenez   +4 more
doaj   +1 more source