Results 61 to 70 of about 138,914 (215)
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
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]
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
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
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]
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
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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]
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
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Adaptive design trials in eating disorder research: A scoping review
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
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

