Results 61 to 70 of about 138,914 (215)

Densidad, estructura poblacional, reproducción y supervivencia de cuatro especies de plantas útiles en el Valle de Tehuacán, México Density, population structure, reproduction and survival of four useful plat species in the Tehuacán Valley, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2008
En este trabajo se analizó densidad, estructura poblacional, reproducción y supervivencia individual de 4 especies de plantas útiles con el fin de determinar el estado en el que se encuentran sus poblaciones y capacidad de regeneración, así como la ...
Héctor Godínez-Alvarez   +6 more
doaj  

Biodiversidad de corales, gorgonias y esponjas en un sector del golfo de Ana María

open access: yesRevista de Investigaciones Marinas, 2023
La investigación se realizó en los meses de octubre de 2011 y marzo de 2012. A partir del análisis de imágenes satelitales se seleccionaron 41 sitios en el sector central del golfo de Ana María, región surcentral de Cuba.
Patricia González-Díaz   +3 more
doaj  

Estimation of the abundance of yellowfin tuna, Thunnus albacares, by age groups and regions within the Eastern Pacific Ocean [PDF]

open access: yes, 1991
ENGLISH: Monthly estimates of the abundance of yellowfin tuna by age groups and regions within the eastern Pacific Ocean during 1970-1988 are made, using purse-seine catch rates, length-frequency samples, and results from cohort analysis.
Deriso, Richard B., Punsly, Richard G.
core  

Effects of coastal development on sawfish movements and the need for marine animal crossing solutions

open access: yesConservation Biology, Volume 38, Issue 4, August 2024.
Abstract Although human‐made barriers to animal movement are ubiquitous across many types of ecosystems, the science behind these barriers and how to ameliorate their effects lags far behind in marine environments compared with terrestrial and freshwater realms.
Karissa O. Lear   +4 more
wiley   +1 more source

The End of the Imperial Dream: War and Power in Castile after 1635

open access: yesStudia Historica: Historia Moderna, 2019
Within a vast chronological period, the wars from the decade of 1630 to that of 1710 can be considered to be in an historical acceleration, in sharp contrast to prior periods: that of 1525 to 1625 and 1720 to 1800, when Iberian conflicts, though ...
José Javier RUIZ IBÁÑEZ
doaj   +1 more source

Patrones de reclutamiento en cuatro especies de Physaria (Brassicaceae): implicancias para el mantenimiento de la densidad en poblaciones silvestres y en cultivo [PDF]

open access: yes, 2016
En zonas áridas, el reclutamiento de nuevos individuos es un proceso crítico que determina la viabilidad poblacional, el potencial de invasión de plantas alóctonas y el éxito en el establecimiento de cultivos.
Bar Lamas, Marlene Ivonne   +4 more
core  

Associations between a feral equid and the Sonoran Desert ecosystem Asociaciones Entre un Equino Salvaje y el Ecosistema del Desierto Sonorense

open access: yesWildlife Monographs, Volume 215, Issue 1, July 2024.
We documented negative associations between feral burros and several elements of the Sonoran Desert ecosystem, and suggest that differences associated with this feral equid may be ecologically important and may have the potential to affect the long‐term viability of this ecosystem.
Esther S. Rubin   +3 more
wiley   +1 more source

Componentes de la tasa de crecimiento poblacional en el negrón especulado de Saskatchewan, Canadá [PDF]

open access: yes, 2004
Breeding range and abundance of White–winged Scoters (Melanitta fusca deglandi) have declined in northwestern North America. Hypotheses proposed to account for this trend are that survival and/or recruitment of females had declined.
Alisauskas, R. T.   +3 more
core  

Adaptive design trials in eating disorder research: A scoping review

open access: yesInternational Journal of Eating Disorders, Volume 57, Issue 6, Page 1278-1290, June 2024.
Abstract Objective This scoping review sought to map the breadth of literature on the use of adaptive design trials in eating disorder research. Method A systematic literature search was conducted in Medline, Scopus, PsycInfo, Emcare, Econlit, CINAHL and ProQuest Dissertations and Theses.
Laura C. Edney, Mia L. Pellizzer
wiley   +1 more source

Postlarval settlement of spiny lobster, Panulirus argus (Latreille, 1804) (Decapoda: Palinuridae), at the Caribbean coast of Costa Rica Asentamiento postlarval en la langosta espinosa, Panulirus argus (Latreille, 1804) (Decapoda: Palinuridae) en la costa Caribe de Costa Rica

open access: yesLatin American Journal of Aquatic Research, 2011
Lobster fishery (Panulirus argus) forms an important part of the fishing activities along the Caribbean coast of Central America. The present study provides information regarding the seasonal abundance and distribution of postlarval P.
Oscar González, Ingo S Wehrtmann
doaj  

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