Results 21 to 30 of about 478 (172)

Distance sampling survey effort to improve density estimates of northern bobwhite

Wildlife 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, Leonard A. Brennan, Michael L. Morrison, Eric D. Grahmann, Andrew N. Tri   +4 more
wiley   +1 more source

Evaluating population connectivity and targeting conservation action for an endangered cat

Ecosphere, 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, Mitch A. Sternberg, Hilary M. Swarts, Steven E. Sesnie   +3 more
wiley   +1 more source

Core–periphery dynamics in a plant–pollinator network

Journal 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, Rodrigo Ramos‐Jiliberto, Diego P. Vázquez, Mariano Rodriguez‐Cabal   +3 more
wiley   +1 more source

Cytotoxic Activity of Extracts from Plants of Central Argentina on Sensitive and Multidrug‐Resistant Leukemia Cells: Isolation of an Active Principle from Gaillardia megapotamica

Evidence-Based Complementary and Alternative Medicine, Volume 2018, Issue 1, 2018., 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‐
María Laura González, Mariana Belén Joray, Jerónimo Laiolo, María Inés Crespo, Sara María Palacios, Gustavo Miguel Ruiz, María Cecilia Carpinella, Yoshiyuki Kimura   +7 more
wiley   +1 more source

Quality and Conservation of Riparian Forest in a Mountain Subtropical Basin of Argentina

International Journal of Ecology, Volume 2016, Issue 1, 2016., 2016
The aims of this work were to describe the conservation status of riparian forests located in a mountain subtropical basin of Tucumán province, Argentina, and assess how the quality of riparian forests is related with altitude, plant species richness, proportion of exotic species, and Total Suspended Solids (TSS) in adjacent rivers.
Romina Daiana Fernández, Sergio Javier Ceballos, Ana Lucía González Achem, Margarita del Valle Hidalgo, Hugo Rafael Fernández, Ram Chander Sihag   +5 more
wiley   +1 more source

Broad Protein Spectrum in Stored Pollen of Three Stingless Bees from the Chaco Dry Forest in South America (Hymenoptera, Apidae, Meliponini) and Its Ecological Implications

Psyche: A Journal of Entomology, Volume 2015, Issue 1, 2015., 2015
Protein content of pollen stored by three meliponine species was variable from 9.78% (less than half the value considered as optimal to brood development in Apis mellifera) in type Capparis tweediana‐C. speciosa to more than 26% in type Maytenus vitis-idaea and some Prosopis samples.
Favio Gerardo Vossler, David Roubik
wiley   +1 more source

Role of Thermal Environment in Habitat Selection by Male White‐Tailed Deer during Summer in Texas, USA

Wildlife Biology, Volume 20, Issue 1, Page 47-56, March 2014., 2014
Thermal cover may influence habitat selection by white‐tailed deer Odocoileus virginianus in subtropical climates with hot summers. We 1) tested the hypothesis that thermal environment is more important in habitat selection at midday during summer than forage quality or quantity and concealment cover and 2) determined whether operative temperature ...
Dean W. Wiemers, Timothy E. Fulbright, David B. Wester, J. Alfonso Ortega‐S., G. Allen Rasmussen, David G. Hewitt, Mickey W. Hellickson   +6 more
wiley   +1 more source

Las especies argentinas del género Condalia ( Rhamnaceae)

Revista del Museo de La Plata, 2023
Se han revisado las especies austral americanas del género Condalia, en base a datos morfológicos, químicos y cariológicos. Se incluyen dos claves (una de ellas fundada en caracteres anatómicos, y la otra en caracteres morfológicos exteriores) para identificar las 3 especies que habitan el territorio argentino, a saber: C. microphylla, C.
Escalante, Manuel G., Najera, Marta, Galdeano, Helvio L.   +2 more
openaire   +1 more source

Diversity‐Productivity Relationship in the Northeastern Tamaulipan Thornscrub Forest of Mexico

International Journal of Ecology, Volume 2014, Issue 1, 2014., 2014
This research examines the diversity‐productivity relationship in a semiarid scrubland, initially under late successional conditions and subsequently under early successional conditions created by experimental clearing, to explore the roles that productivity and stochastic mortality play in species exclusion in this environment.
Jose Navar, F. de Jesus Rodriguez-Flores, Pedro A. Dominguez-Calleros, Gustavo Perez-Verdin, Ram C. Sihag   +4 more
wiley   +1 more source

Rehabilitación ecológica en el noreste patagónico: Supervivencia y reclutamiento de especies nativas en suelos con diferentes texturas

Ecología Austral, 2021
Los suelos del noreste patagónico presentan una marcada heterogeneidad, dada principalmente por su textura. En esta región se observan fuertes procesos de degradación.
Juan M. Zeberio, Carolina A. Pérez
doaj   +1 more source