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Effect of Stage-Specific Vital Rates on Population Growth Rates and Effective Population Sizes in an Endangered Iteroparous Plant
by
NICOLÈ, FLORENCE
, TILL-BOTTRAUD, IRÈNE
, GAGGIOTTI, OSCAR E.
, ANDRELLO, MARCO
in
Animal, plant and microbial ecology
/ annual effective size
/ análisis de elasticidad
/ análisis de viabilidad poblacional
/ Applied ecology
/ Austrian dragonhead
/ Biodiversity and Ecology
/ Biological and medical sciences
/ Censuses
/ Conservation biology
/ Conservation, protection and management of environment and wildlife
/ Demography
/ Dracocephalum
/ Dracocephalum austriacum
/ Ecological genetics
/ elasticity analysis
/ Endangered Species
/ Environmental Sciences
/ Fecundity
/ Fundamental and applied biological sciences. Psychology
/ generaciones sobrepuestas
/ General aspects
/ generation time
/ matrix population models
/ modelos poblacionales matriciales
/ Models, Theoretical
/ overlapping generations
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ Plant Development
/ Plants
/ Population genetics
/ Population Growth
/ Population growth rate
/ Population size
/ population viability analysis
/ Survival Rate
/ Survival rates
/ tamaño efectivo anual
/ tiempo generacional
2012
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Effect of Stage-Specific Vital Rates on Population Growth Rates and Effective Population Sizes in an Endangered Iteroparous Plant
by
NICOLÈ, FLORENCE
, TILL-BOTTRAUD, IRÈNE
, GAGGIOTTI, OSCAR E.
, ANDRELLO, MARCO
in
Animal, plant and microbial ecology
/ annual effective size
/ análisis de elasticidad
/ análisis de viabilidad poblacional
/ Applied ecology
/ Austrian dragonhead
/ Biodiversity and Ecology
/ Biological and medical sciences
/ Censuses
/ Conservation biology
/ Conservation, protection and management of environment and wildlife
/ Demography
/ Dracocephalum
/ Dracocephalum austriacum
/ Ecological genetics
/ elasticity analysis
/ Endangered Species
/ Environmental Sciences
/ Fecundity
/ Fundamental and applied biological sciences. Psychology
/ generaciones sobrepuestas
/ General aspects
/ generation time
/ matrix population models
/ modelos poblacionales matriciales
/ Models, Theoretical
/ overlapping generations
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ Plant Development
/ Plants
/ Population genetics
/ Population Growth
/ Population growth rate
/ Population size
/ population viability analysis
/ Survival Rate
/ Survival rates
/ tamaño efectivo anual
/ tiempo generacional
2012
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Effect of Stage-Specific Vital Rates on Population Growth Rates and Effective Population Sizes in an Endangered Iteroparous Plant
by
NICOLÈ, FLORENCE
, TILL-BOTTRAUD, IRÈNE
, GAGGIOTTI, OSCAR E.
, ANDRELLO, MARCO
in
Animal, plant and microbial ecology
/ annual effective size
/ análisis de elasticidad
/ análisis de viabilidad poblacional
/ Applied ecology
/ Austrian dragonhead
/ Biodiversity and Ecology
/ Biological and medical sciences
/ Censuses
/ Conservation biology
/ Conservation, protection and management of environment and wildlife
/ Demography
/ Dracocephalum
/ Dracocephalum austriacum
/ Ecological genetics
/ elasticity analysis
/ Endangered Species
/ Environmental Sciences
/ Fecundity
/ Fundamental and applied biological sciences. Psychology
/ generaciones sobrepuestas
/ General aspects
/ generation time
/ matrix population models
/ modelos poblacionales matriciales
/ Models, Theoretical
/ overlapping generations
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ Plant Development
/ Plants
/ Population genetics
/ Population Growth
/ Population growth rate
/ Population size
/ population viability analysis
/ Survival Rate
/ Survival rates
/ tamaño efectivo anual
/ tiempo generacional
2012
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Effect of Stage-Specific Vital Rates on Population Growth Rates and Effective Population Sizes in an Endangered Iteroparous Plant
Journal Article
Effect of Stage-Specific Vital Rates on Population Growth Rates and Effective Population Sizes in an Endangered Iteroparous Plant
2012
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Overview
Effective population size (N e ) determines the strength of genetic drift and can influence the level of genetic diversity a population can maintain. Assessing how changes in demographic rates associated with environmental variables and management actions affect N e thus can be crucial to the conservation of endangered species. Calculation of N e through demographic models makes it possible to use elasticity analyses to study this issue. The elasticity of N e to a given vital rate is the proportional change in N e associated with a proportional increase in that vital rate. In addition, demographic models can be used to study N e and population growth rate (λ) simultaneously. Simultaneous examination is important because some vital rates differ diametrically in their associations with λ and N e . For example, in some cases increasing these vital rates increases λ and decreases N e . We used elasticity analysis to study the effect of stage-specific survival and flowering rates on N e , annual effective population size (N a ), and λ in seven populations of the endangered plant Austrian dragonhead (Oracocephalum austriacum). In populations with λ > 1, the elasticities of N e and N a were similar to those of λ. Survival rates of adults were associated with greater elasticities than survival rates of juveniles, flowering rates, or fecundity. In populations with λ < 1, N e and N a exhibited greater elasticities to juvenile than to adult vital rates. These patterns are similar to those observed in other species with similar life histories. We did not observe contrasting effects of any vital rate on λ and N e ; thus, management actions that increase the λ of populations of Austrian dragonhead will not increase genetic drift. Our results show that elasticity analyses of N e and N a can complement elasticity analysis of λ. Moreover, such analyses do not require more data than standard matrix models of population dynamics. El tamaño poblacional efectivo (N e ) determina la fuerza de la deriva gènica y puede influir en el nivel de diversidad genética que mantiene una población. Por lo tanto, la evaluación del efecto de los cambios en tasas demográficas asociadas con variables ambientales y de las acciones de manejo sobre N e puede ser crucial para la conservación de una especie en peligro. La estimación de N e mediante modelos demográficos posibilita el uso de análisis de elasticidad para estudiar este tópico. La elasticidad de N e a una tasa vital determinada es el cambio proporcional en N e asociado con un incremento proporcional en esa tasa vital.Adicionalmente, los modelos demográficos pueden ser utilizados para estudiar N e y la tasa de crecimiento poblacional (λ) simultáneamente. Esto es importante porque algunas tasas vitales difieren diametralmente en sus asociaciones con λ y N e . Por ejemplo, en algunos casos el incremento de estas tasas vitales incrementa λ y disminuye N e . Utilizamos análisis de elasticidad para estudiar el efectos de tasas de floración y supervivencia específicas de estadios sobre N e , el tamaño efectivo anual (N a ), y λ en siete poblaciones de la planta en peligro Dracocephalum austriacum. Las elasticidades de N e y N a en poblaciones con λ > 1 fueron similares a las de 1.Las tasas de supervivencia de adultos se asociaron con elasticidades mayores que las tasas de supervivencia de juveniles, las tasas de floración o la fecundidad. En poblaciones con λ < 1, N e y N a presentaron mayor elasticidad en las tas vitales juveniles que en las adultas. Estos patrones fueron similares a los observados en otras especies con historias de vida similares. No observamos efectos contrastantes de ninguna tasa vital sobre λ y N e ; por lo tanto, las acciones de manejo que incrementan la λ de las poblaciones de D. austriacum no incrementarán la deriva gènica. Nuestros resultados muestran que los análisis de elasticidad de N e y N a pueden complementar el análisis de elasticidad de λ. Más aun, tales análisis no requieren más datos que los modelos matriciales de dinámica poblacional estándar.
Publisher
Blackwell Publishing Inc,Wiley-Blackwell,Wiley
Subject
Animal, plant and microbial ecology
/ análisis de viabilidad poblacional
/ Biological and medical sciences
/ Censuses
/ Conservation, protection and management of environment and wildlife
/ Fundamental and applied biological sciences. Psychology
/ modelos poblacionales matriciales
/ Parks, reserves, wildlife conservation. Endangered species: population survey and restocking
/ Plants
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