Spatial Scale of Population Synchrony: Environmental Correlation versus Dispersal and Density Regulation

Lande, Russell; Engen, Steinar; Sæther, Bernt‐Erik

doi:10.1086/303240

Cited by 251 publications

(294 citation statements)

References 29 publications

Supporting

Mentioning

281

Contrasting

Order By: Relevance

“…1). In nature, however, spatial synchrony generally decreases with distance due to reduced environmental correlation, dispersal, and/or community similarity24252627.…”

Section: Resultsmentioning

confidence: 99%

An invariability-area relationship sheds new light on the spatial scaling of ecological stability

et al. 2017

View full text Add to dashboard Cite

The spatial scaling of stability is key to understanding ecological sustainability across scales and the sensitivity of ecosystems to habitat destruction. Here we propose the invariability–area relationship (IAR) as a novel approach to investigate the spatial scaling of stability. The shape and slope of IAR are largely determined by patterns of spatial synchrony across scales. When synchrony decays exponentially with distance, IARs exhibit three phases, characterized by steeper increases in invariability at both small and large scales. Such triphasic IARs are observed for primary productivity from plot to continental scales. When synchrony decays as a power law with distance, IARs are quasilinear on a log–log scale. Such quasilinear IARs are observed for North American bird biomass at both species and community levels. The IAR provides a quantitative tool to predict the effects of habitat loss on population and ecosystem stability and to detect regime shifts in spatial ecological systems, which are goals of relevance to conservation and policy.

show abstract

“…1). In nature, however, spatial synchrony generally decreases with distance due to reduced environmental correlation, dispersal, and/or community similarity24252627.…”

Section: Resultsmentioning

confidence: 99%

An invariability-area relationship sheds new light on the spatial scaling of ecological stability

et al. 2017

View full text Add to dashboard Cite

show abstract

“…A number of factors may have influenced this finding. Lande et al (1999) noted that estimation errors in population abundance should bias synchrony low. Errors in our estimates of recruitment would also therefore be anticipated to bias synchrony low.…”

Section: Discussionmentioning

confidence: 99%

Spatial synchrony of recruitment in mountain‐dwelling woodland caribou

et al. 2011

View full text Add to dashboard Cite

Spatial synchrony in population dynamics is a ubiquitous feature across a range of taxa. Understanding factors influencing this synchrony may shed light on important drivers of population dynamics. Three mechanisms influence the degree of spatial synchrony between populations: dispersal, shared predators, and spatial environmental covariance (the Moran effect). We assessed demographic spatial synchrony in recruitment (calf:cow ratio) of 10 northern mountain caribou herds in the Yukon Territory, Canada (1982Canada ( -2008. Shared predators and dispersal were ruled out as causal mechanisms of spatial recruitment synchrony in these herds and therefore any spatial synchrony should be due to the Moran effect. We also assessed the degree of spatial synchrony in April snow depth to represent environmental variability. The regional average spatial synchrony in detrended residuals of April snow depth was 0.46 (95% CI 0.37 to 0.55). Spatial synchrony in caribou recruitment was weak at 0.13 (95% CI -0.06 to 0.32). The spatial scale of synchrony in April snow depth and caribou recruitment was 330.2 km (95% CI 236.3 to 370.0 km) and 170.0 km (95% CI 69.5 to 282.8 km), respectively. We also investigated how the similarity in terrain features between herds influenced the degree of spatial synchrony using exponential decay models. Only the difference in elevation variability between herds during calving was supported by the data. Herds with more similar elevation variability may track snowmelt ablation patterns in a more similar fashion, which would subsequently result in more synchronized predation rates on calves and/or nutritional effects impacting juvenile survival. Interspecific interactions with predators and alternate prey may also influence spatial synchrony of recruitment in these herds.

show abstract

“…During the last 20 years, the study of population dynamics in wild environments has been considerably aided by the use of individual tagging and monitoring. Such technical progress allows theoretical model predictions (Bennetts et al 2001), such as the correlation between spatial synchrony of population dynamics and dispersal intensity (Tilman & Kareiva 1997;Lande et al 1999;Kendall et al 2000) and the evolutionary role of dispersal processes (Dieckmann et al 1999;Ronce et al 2001), to be tested. There are few connections, however, between theoretical and empirical approaches (Hanski 2001).…”

Section: Introductionmentioning

confidence: 99%

Exploring Population Dynamics Patterns in a Rare Fish, Zingel asper, through Capture‐Mark‐Recapture Methods

Labonne¹,

Gaudin²

2005

Conservation Biology

View full text Add to dashboard Cite

We performed a capture-mark-recapture study on one of the last populations of Zingel asper, an endemic percid species of the Rhône River basin in France. The distribution of Z. asper has decreased dramatically during the last century. We sampled three sites in suitable habitats in the Beaume River. No impact of individual tagging on survival was found. The demography of the population was analyzed using capture-recapture methods that allow the estimation of survival, recruitment, and demographic growth rates. Annual survival rates were low (0. 35-0.50). The level of transience was high (5% to 25%), suggesting that a significant number of individuals were highly mobile or shifted to suboptimal habitats. Seniority rates suggested random highly variable recruitment between years. The three sites had similar variation patterns in all demographic parameters, indicating broad spatial covariation in population dynamics. We found some local differences in demographic parameters, which could be linked to local habitat quality. Individual tagging allowed for the estimation of demographic parameters that improved our understanding of Z. asper population dynamics and revealed mechanisms that may affect population persistence, such as stochastic recruitment, low survival, and frequent dispersal. The fragmentation of habitat through river damming inhibits dispersal and represents a threat to the persistence of Z. asper in the Rhône basin. Our results offer evidence of the importance of dispersal in nonmigratory fishes and confirm the usefulness of individual tagging methods in rare fish demography.Resumen: Realizamos un estudio de captura-marca-recaptura en una de lasúltimas poblaciones de Zingel asper, una especie de pércido endémica a la cuenca del Río Rhône en Francia. La distribución de Z. asper ha disminuido dramáticamente durante elúltimo siglo. Muestreamos tres sitios en hábitats adecuados en el Río Beaume. No se detectó impacto del marcaje de individuos sobre la supervivencia. Analizamos la demografía de la población mediante métodos de captura-recaptura que permiten la estimación de las tasas de supervivencia, reclutamiento y crecimiento demográfico. Las tasas anuales de supervivencia fueron bajas (0.35-0.5). El nivel de transitoriedad fue alto (5 a 25%), lo que sugiere que un número significativo de individuos tuvo mucha movilidad o se cambió a hábitats subóptimos. Las tasas de veteranía sugirieron reclutamiento aleatorio muy variable entre años. Los tres sitios tuvieron patrones de variación similares en todos los parámetros demográficos, lo que indica amplia covariación espacial en la dinámica poblacional. Encontramos algunas diferencias locales en parámetros demográficos, que pueden estar relacionados con la calidad del hábitat local. El marcaje individual permitió la estimación de parámetros demográficos que mejoraron nuestro entendimiento de la dinámica poblacional de Z. asper y reveló mecanismos que pueden afectar la persistencia de 464 Population Dynamics of Zingel asperLabonne & Gaudin la población, como el r...

show abstract

Spatial Scale of Population Synchrony: Environmental Correlation versus Dispersal and Density Regulation

Cited by 251 publications

References 29 publications

An invariability-area relationship sheds new light on the spatial scaling of ecological stability

An invariability-area relationship sheds new light on the spatial scaling of ecological stability

Spatial synchrony of recruitment in mountain‐dwelling woodland caribou

Exploring Population Dynamics Patterns in a Rare Fish, Zingel asper, through Capture‐Mark‐Recapture Methods

Contact Info

Product

Resources

About