Results 41 to 50 of about 68,821 (165)

Assessing limits of sustainable seed harvest in wild plant populations

open access: yesConservation Biology, Volume 39, Issue 5, October 2025.
Abstract Seed harvesting from wild plant populations is key for ecological restoration, but it may threaten the persistence of the source populations. Consequently, several countries have set guidelines limiting the proportions of harvestable seeds. However, these guidelines are inconsistent and lack a solid empirical basis.
Anna Bucharova   +3 more
wiley   +1 more source

Interactions of rare earth elements with living organisms and emerging biotechnical applications

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 5, Page 1251-1274, September 2025.
Rare earth elements (REEs) are critical resources required to achieve net‐zero carbon emission targets and energy security. However, rising demand for REEs coupled with significant extraction and processing challenges and geopolitical risks restricts access to REE resources.
Samantha A. McGaughey   +6 more
wiley   +1 more source

International consensus principles for the sustainable harvest of polar bears

open access: yesConservation Biology, Volume 39, Issue 4, August 2025.
Abstract Multilateral agreements are required for the effective management of large carnivores with ranges that cross geopolitical boundaries. This is particularly important for species subject to rapid changes in distribution or demographic status due to climate warming. We considered 3 international consensus principles for the sustainable harvest of
Eric V. Regehr   +7 more
wiley   +1 more source

Análisis comparativo de los métodos húmedo y alcalino en la extracción de almidón de semillas de Amaranthus quitensis L.

open access: yesRevista del Instituto de Investigación de la Facultad de Minas, Metalurgia y Ciencias Geográficas, 2018
En la presente investigación se analizaron dos métodos para la extracción de almidón de semillas de Amaranthus quitensis L. (Ataco) con el objetivo de determinar el procedimiento con mejor rendimiento y seguidamente determinar sus principales ...
Juan Carlos González García
doaj   +1 more source

A computational framework to characterize and compare the tonal repertoires of toothed whales

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 7, Page 1350-1368, July 2025.
Abstract Toothed whales, despite being one of the most acoustically specialized lineages of vertebrates, lack detailed vocal repertoire characterizations comparable to those of songbirds and primates. Current descriptions often lack standardization, limiting interspecies and intraspecies comparisons critical for understanding the contribution of ...
Maia Austin   +7 more
wiley   +1 more source

Optimización del proceso de extracción de oleorresinas de Capsicum frutescens L. aplicando la tecnología de fluidos supercríticos y extracción asistida por ultrasonido. [PDF]

open access: yes, 2017
Se optimizó el proceso de extracción de oleorresina de Capsicum frutescens L. aplicando la tecnología de fluidos supercríticos (SFE) y extracción asistida por ultrasonido (UAE). Se evaluó el efecto de la temperatura (35,9°C - 64,1°C) y presión (219,3 bar
López Narvaez, Jimmy Alexander
core  

Landscape configuration in the litoralmediterranean salt holdings: The case of San Pedro del Pinatar saltworks (Murcia, Spain)

open access: yesAnales de Geografía de la Universidad Complutense, 2014
The economic importance of the salt industry for centuries has allowed safeguard many of these sites against urbanization processes in the coast, maintaining some of the most outstanding and evocative landscapes of the Mediterranean coastline.
Gustavo A. Ballesteros Pelegrín
doaj   +1 more source

Abandoned mine land program: Examining public participation in decision‐making

open access: yesReview of Policy Research, Volume 42, Issue 3, Page 629-657, May 2025.
Abstract For centuries, coal extraction and production provided low‐cost energy that powered the American economy. Currently, an estimated 5.5 million people in the Appalachian region live within one mile of an Abandoned Mine Land (AML) site. The site remediation has been funded and promoted by the AML program under the Surface Mining Control and ...
Karsyn Kendrick, Younsung Kim
wiley   +1 more source

Seminarios sobre extracción forestal [PDF]

open access: yes, 1980
Proyecto Mejoramiento de los Sistemas de Extracción y Transformación Forestal - Ministerio de Agricultura y Alimentación - Programa de las Naciones Unidas para el Desarrollo - Organizaciones de las Naciones Unidas para la Agricultura y la AlimentaciónEl ...
Dirección General Forestal y de Fauna
core  

New opportunities and challenges for conservation evidence synthesis from advances in natural language processing

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
Abstract Addressing global environmental conservation problems requires rapidly translating natural and conservation social science evidence to policy‐relevant information. Yet, exponential increases in scientific production combined with disciplinary differences in reporting research make interdisciplinary evidence syntheses especially challenging ...
Charlotte H. Chang   +7 more
wiley   +1 more source

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