Results 11 to 20 of about 1,904 (181)

Wood Volume Production and Use of 10 Woody Species in Semiarid Zones of Northeastern Mexico

open access: yesInternational Journal of Forestry Research, 2012
A research strategy was established to analyze the structure of timber trees in terms of forest productivity (volume and wood density) of 10 species. The native species Acacia farnesiana, Acacia schaffneri, Bumelia celastrina, Cercidium macrun, Condalia ...
Rahim Foroughbakhch   +5 more
doaj   +2 more sources

Nueva especie de Condalia Cav. (Rhamnaceae) y notas sobre los géneros de la familia en la flora de Colombia

open access: yesCaldasia, 1997
Condalia thomasiana (Rhamnaceae), a new species representing the first report of this genus for Colombia, is described and illustrated. Some ecological and taxonomic aspects of the species are discussed and a key for the nearest species and one for the ...
Fernández Alonso José Luis
doaj   +3 more sources

Antoni Condal. Els gèneres Condalia [PDF]

open access: yesQuaderns de la Fundació Dr. Antoni Esteve, 2016
Baños, Josep-Eladi, Guardiola, Elena
core   +2 more sources

Highway Crossing Rates of Wild Felids Before, During, and After Wildlife Crossing Structure Installation. [PDF]

open access: yesEcol Evol
In South Texas, eight wildlife crossing structures (WCS) were installed to mitigate vehicle collisions and improve habitat connectivity for the endangered ocelot and other wildlife. GPS tracking of 35 animals (30 bobcats and 5 ocelots) from 2013 to 2021 showed a decline in total and on‐roadway crossings, and, although WCS were used, they were still ...
Lehnen SE   +5 more
europepmc   +2 more sources

Effect of mining activities in biotic communities of Villa de la Paz, San Luis Potosi, Mexico. [PDF]

open access: yesBiomed Res Int, 2014
Mining is one of the most important industrial activities worldwide. During its different stages numerous impacts are generated to the environment. The activities in the region have generated a great amount of mining residues, which have caused severe pollution and health effects in both human population and biotic components. The aim of this paper was
Espinosa-Reyes G   +6 more
europepmc   +2 more sources

Distance sampling survey effort to improve density estimates of northern bobwhite

open access: yesWildlife Society Bulletin, Volume 46, Issue 3, July 2022., 2022
Survey design is an essential component of estimating wildlife populations via distance sampling. However, the number of transects flown is often based on logistics rather than survey precision. We evaluated the variance associated with estimates from varying levels of survey coverage while using line‐transect distance sampling for northern bobwhites ...
Andrea Montalvo   +4 more
wiley   +1 more source

Evaluating population connectivity and targeting conservation action for an endangered cat

open access: yesEcosphere, Volume 12, Issue 2, February 2021., 2021
Abstract Dispersal of animals among populations helps to increase genetic variability and population viability. The endangered ocelot (Leopardus pardalis) in south Texas persists in two small populations separated by 30 km and cutoff from populations in northeastern Mexico.
Sarah E. Lehnen   +3 more
wiley   +1 more source

Características palinológicas y fisicoquímicas de tres tipos de mieles uniflorales del centro de Argentina [PDF]

open access: yes, 2008
Se estudiaron las características de 59 mieles monoflorales de Condalia microphylla Cav. (“piquillín”), Centaurea solstitialis L. (“abrepuño amarillo”) y Prosopis spp., provenientes de La Pampa, Argentina. Se determinaron caracteres polínicos (abundancia
Caccavari, Marta Alicia   +2 more
core   +4 more sources

Cytotoxic Activity of Extracts from Plants of Central Argentina on Sensitive and Multidrug-Resistant Leukemia Cells: Isolation of an Active Principle from Gaillardia megapotamica. [PDF]

open access: yesEvid Based Complement Alternat Med, 2018
Plants are a significant reservoir of cytotoxic agents, including compounds with the ability to interfere with multidrug‐resistant (MDR) cells. With the aim of finding promising candidates for chemotherapy, 91 native and naturalized plants collected from the central region of Argentina were screened for their cytotoxic effect toward sensitive and MDR P‐
González ML   +6 more
europepmc   +2 more sources

Core–periphery dynamics in a plant–pollinator network

open access: yesJournal of Animal Ecology, Volume 89, Issue 7, Page 1670-1677, July 2020., 2020
The authors studied the temporal dynamics of a plant–pollinator network from a dryland ecosystem. They found a core–periphery structure persistent throughout flowering seasons and years. Yet, virtually all species at the core in some subseasons were also peripheral in other subseasons, while other species always remained peripheral.
Vincent Miele   +3 more
wiley   +1 more source

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