Results 71 to 80 of about 218,764 (232)

Plataforma digital interactiva como modelo de gestión en el campo de la arquitectura e ingeniería: ecosistema parque natural de 'El Hondo' [PDF]

open access: yes, 2014
Plataforma digital interactiva como modelo de gestión en el campo de la arquitectura e ingeniería: ecosistema parque natural de 'El ...
Andrés Martín-Pozuelo, David   +4 more
core  

Mapping the density of giant trees in the Amazon

open access: yesNew Phytologist, EarlyView.
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
Robson Borges de Lima   +20 more
wiley   +1 more source

An arbuscular mycorrhiza from the 407‐million‐year‐old Windyfield Chert identified through advanced fluorescence and Raman imaging

open access: yesNew Phytologist, EarlyView.
Summary Mycorrhizal associations between fungi and plants are a fundamental aspect of terrestrial ecosystems. Mycorrhizas occur in c. 85% of extant plants, yet their geological record remains sparse. Rare fossil evidence from early terrestrial environments offers crucial insights into these ancient symbioses, but visualizing fossil fungi at the ...
Christine Strullu‐Derrien   +7 more
wiley   +1 more source

Reflexiones acerca de los ecosistemas agrícolas y la necesidad de su conservación Reflections on agricultural ecosystems and the need to preserve them

open access: yesPastos y Forrajes, 2008
La conservación de los ecosistemas agrícolas o agroecosistemas reviste una gran importancia para la seguridad alimentaria del planeta, por cuanto ellos contienen los elementos necesarios (suelo, agua y biodiversidad) que son consustanciales a la ...
Hilda Machado, Maybe Campos
doaj  

Drying suppresses fine root production to 1 m depths and alters root traits in four distinct tropical forests

open access: yesNew Phytologist, EarlyView.
Summary Drying and drought in tropical forests, which have some of the highest net primary productivity on Earth, are likely to alter root dynamics, ecosystem function, and carbon (C) storage. We used a chronic drying experiment in four lowland Panamanian forests to investigate whether soil drying shifts tropical forest root production from surface to ...
Amanda L. Cordeiro   +7 more
wiley   +1 more source

The emergence and outcomes of collective action: an institutional and ecosystem approach A emergência e os resultados da ação coletiva: uma abordagem institucional e ecossistêmica

open access: yesAmbiente & Sociedade, 2002
Participation in collective action is frequently studied through a community-based analysis, with focus on the social features of the participants and on the ecological features of the managed system.
Célia Futtema   +3 more
doaj   +1 more source

HADAS: tool for analysis and development of sustainable applications [PDF]

open access: yes, 2018
Durante esta Conferencia Internacional, representantes del Gobierno, autoridades locales, instituciones públicas y privadas, vicerrectores de Internacionalización y talento nacional e internacional crearon un ecosistema para fomentar las colaboraciones ...
Fuentes-Fernández, Lidia   +1 more
core  

Contenido de Cadmio y Plomo en tejido de Hígado y Riñón en el Jote de Cabeza Colorada Cathartes aura (Linneo, 1758) de Chañaral, Desierto de Atacama, Chile [PDF]

open access: yes, 2013
Indexación: Web of Science; ScieloThe Atacama region, Chile, presents one of the highest levels of mining exploitation of the country, which leads to high levels of contamination from mine tailings and other related environmental liabilities.
Abarca, Jorge   +6 more
core   +1 more source

Computational analysis to assess hemodynamic forces in descending thoracic aortic aneurysms

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Left: Pre‐processing. First, we perform the segmentation of the Computer Tomography angiorgraphy (angio‐CT) scans of a healthy patient, obtaining the surface of a healthy thoracic aorta with a Type III aortic arch. Then, we build nine ideal configurations with Descending Thoracic Aortic Aneurysm (DTAA), varying the aortic arch ...
Francesca Duca   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy