Results 41 to 50 of about 363,123 (219)

Análisis estructural de ecosistemas forestales en el Cerro del Potosí, Nuevo León, México [PDF]

open access: yes, 2003
Para una fracción del Cerro del Potosí en la Sierra Madre Oriental de Nuevo León, México, se elaboró un modelo digital de terreno a partir de fotografías aéreas, como base para la delimitación y cartografía de ocho rodales con diferente sitio y ...
Aguirre Calderón, Óscar Alberto   +3 more
core  

Harnessing the benefits of herbarium specimen digitisation for inferring recent and ongoing plant extinctions

open access: yesNew Phytologist, EarlyView.
Summary Evidence for the ongoing biodiversity crisis rests on assessment of a small fraction of described species, with major knowledge gaps for most organisms, including plants. Here, we highlight how digitised herbarium specimens can be used to accelerate and improve estimates of recent and ongoing plant extinctions.
Aelys M. Humphreys   +4 more
wiley   +1 more source

Descubriendo Patrones Craneofaciales Usando Datos Cefalométricos Multivariados para la Toma de Decisiones en Ortodoncia [PDF]

open access: yes, 2013
Indexación: Web of Science; Scielo.The aim was to find craniofacial morphology patterns in a multivariate cephalometric database using a clustering technique.
A. Ruz, Gonzalo   +2 more
core   +1 more source

Heat‐evolved coral photosymbionts exhibit dampened stress responses across distinct physiological contexts

open access: yesNew Phytologist, EarlyView.
Summary Experimental evolution under elevated temperatures has generated heat‐evolved (HE) strains of Symbiodiniaceae that enhance coral bleaching tolerance. However, the biomolecular mechanisms underlying this resilience remain poorly understood. We conducted a laboratory heat‐stress experiment and applied synchrotron‐based Fourier transform infrared (
Bede G. Johnston   +5 more
wiley   +1 more source

The KINDRA project. A tool for sharing Europe’s groundwater research and knowledge [PDF]

open access: yes, 2015
Hydrogeology-related research activities cover a wide spectrum of research areas at EU and national levels. The KINDRA project (Knowledge Inventory for hydrogeology research, Grant Agreement No.
Adrienn Csekő   +15 more
core   +1 more source

Diversidad y estructura vertical del bosque de pino–encino en Guadalupe y Calvo, Chihuahua

open access: yesRevista Mexicana de Ciencias Forestales, 2019
Se evaluaron áreas con y sin manejo forestal de la Umafor 0808 Guadalupe y Calvo, Chihuahua; gestionadas mediante el Método Mexicano de Ordenación de Bosques Irregulares (MMOBI). Se analizó y comparó la información de conglomerados del Inventario Nacional Forestal y de Suelos (2004-2009); 95 en masas con manejo y 27 sin manejo.
Samuel Alberto García García   +3 more
openaire   +2 more sources

Photosynthetic primary production in the Mesoproterozoic

open access: yesNew Phytologist, EarlyView.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo   +1 more
wiley   +1 more source

The distribution, abundance, and ecology of larval tunas from the entrance to the Gulf of California [PDF]

open access: yes, 1970
ENGLISH: This study is based on collections of larvae of Thunnus albacares, Euthynnus llneatus, and Auxis sp. obtained from surface and oblique net tows made during seven cruises, each along a comparable track in the entrance of the Gulf of California ...
Klawe, Witold L.   +2 more
core  

Estructura vertical y horizontal en dos bosques de Polylepis tarapacana con diferentes situaciones ambientales

open access: yes, 2020
Fil: Cellini, Juan Manuel. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales.
Lopez, Victoria Lien   +3 more
openaire   +2 more sources

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