Site fidelity in temporally correlated environments enhances population persistence

Schmidt, Kenneth A.

doi:10.1111/j.1461-0248.2003.00565.x

Cited by 104 publications

(108 citation statements)

References 51 publications

(101 reference statements)

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“…This is obvious for weedy species requiring colonization into empty sites after disturbance or pathogens that must infect fresh hosts to replace infected hosts they kill, but the point pertains to any species in spatially open and temporally varying environments. Theoretical models (46) and experiments (47) show that when local populations are linked by dispersal, a positive autocorrelation through time in local growth rates that is to a degree spatially uncorrelated can permit persistence, even if the average growth rate in each patch predicts extinction [and adaptive habitat selection further enhances persistence (48)]. …”

Section: Stitching the Nichementioning

confidence: 99%

Bringing the Hutchinsonian niche into the 21st century: Ecological and evolutionary perspectives

Holt

2009

Proc. Natl. Acad. Sci. U.S.A.

733

717

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G. Evelyn Hutchinson more than a half century ago proposed that one could characterize the ecological niche of a species as an abstract mapping of population dynamics onto an environmental space, the axes of which are abiotic and biotic factors that influence birth and death rates. If a habitat has conditions within a species' niche, a population should persist without immigration from external sources, whereas if conditions are outside the niche, it faces extinction. Analyses of species' niches are essential to understanding controls on species' geographical range limits and how these limits might shift in our rapidly changing world. Recent developments in ecology and evolutionary biology suggest it is time to revisit and refine Hutchinson's niche concept. After reviewing techniques for quantifying niches, I examine subtleties that arise because of impacts species have on their own environments, the density-dependent modulation of how individuals experience environments, and the interplay of dispersal and temporal heterogeneity in determining population persistence. Moreover, the evolutionary record over all time scales reveals a spectrum of rates of change in species' niches, from rapid niche evolution to profound niche conservatism. Substantial challenges revolving around the evolutionary dimension of the Hutchinsonian niche include quantifying the magnitude of evolved intraspecific and clade-level variation in niches and understanding the factors that govern where along the spectrum of potential evolutionary rates any given lineage lies. A growing body of theory provides elements of a conceptual framework for understanding niche conservatism and evolution, paving the way for an evolutionary theory of the niche.Allee effects ͉ ecological niche ͉ landscape texture ͉ niche conservatism ͉ niche evolution T he niche concept is central to ecology (1, 2). G. EvelynHutchinson in a seminal essay Ͼ50 years ago (1) proposed a formalization of the niche that still resonates in the minds of ecologists. After years of quiescence, there has been a recent upsurge of interest in species' niches (2, 3), driven in part by the urgency of predicting ecological responses to rapid environmental change. In this article, after summarizing Hutchinson's niche concept and sketching empirical approaches to quantifying niches, I will point out limitations in standard articulations of the Hutchinsonian niche. Some arise from its focus on a species solely when it is rare, which can belie the impact of positive density dependence and feedback processes on population persistence; others arise from its relative neglect of temporal variation and spatial dynamics; and yet others arise from genetic variation and evolution in the niche itself. These reflections will lead to alternative and complementary niche definitions, enriching and extending Hutchinson's concept.

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Section: Stitching the Nichementioning

confidence: 99%

Bringing the Hutchinsonian niche into the 21st century: Ecological and evolutionary perspectives

Holt

2009

Proc. Natl. Acad. Sci. U.S.A.

733

717

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“…When population densities increase in these habitats, organisms may prosper by selecting habitats that were previously unused. There have been numerous studies of the interplay between dispersal and environmental heterogeneity and how this influences population growth; see Hastings (1983), Gonzalez and Holt (2002), Schmidt (2004), Roy et al (2005), Schreiber (2010), Cantrell et al (2012), Durrett and Remenik (2012), Evans et al (2013) and references therein. The mathematical analysis for stochastic models with density-dependent feedbacks is less explored.…”

Section: Introductionmentioning

confidence: 99%

Symmetries and pattern formation in hyperbolic versus parabolic models of self-organised aggregation

Buono

Eftimie

2014

J. Math. Biol.

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This work is devoted to studying the dynamics of a structured population that is subject to the combined effects of environmental stochasticity, competition for resources, spatio-temporal heterogeneity and dispersal. The population is spread throughout n patches whose population abundances are modeled as the solutions of a system of nonlinear stochastic differential equations living on [0, ∞) n . We prove that r , the stochastic growth rate of the total population in the absence of competition, determines the long-term behaviour of the population. The parameter r can be expressed as the Lyapunov exponent of an associated linearized system of stochastic differential equations. Detailed analysis shows that if r > 0, the population abundances converge polynomially fast to a unique invariant probability measure on (0, ∞) n , while when r < 0, the population abundances of the patches converge almost surely to 0 exponentially fast. 2013) and proves one of their conjectures. Compared to recent developments, our model incorporates very general density-dependent growth rates and competition terms. Furthermore, we prove that persistence is robust to small, possibly density dependent, perturbations of the growth rates, dispersal matrix and covariance matrix of the environmental noise. We also show that the stochastic growth rate depends continuously on the coefficients. Our work allows the environmental noise driving our system to be degenerate. This is relevant from a biological point of view since, for example, the environments of the different patches can be perfectly correlated. We show how one can adapt the nondegenerate results to the degenerate setting.As an example we fully analyze the two-patch case, n = 2, and show that the stochastic growth rate is a decreasing function of the dispersion rate. In particular, coupling two sink patches can never yield persistence, in contrast to the results from the nondegenerate setting treated by Evans et al. which show that sometimes coupling by dispersal can make the system persistent.

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“…Closures can be effective for managing and protecting inshore fisheries, particularly those in habitats vulnerable to shoreline development and anthropogenic degradation (Johnson et al 1999, Roberts et al 2001. Characterizing movement patterns -particularly home-range size and site fidelity (remaining faithful to breeding or foraging sites; see Schmidt 2004 for discussion) -is essential in reserve design and assessment (DeMartini 1993, Zeller & Russ 1998, Cole et al 2000, Roberts et al 2001, Botsford et al 2003, Lowe et al 2003, Meester et al 2004, Weatherbee et al 2004.…”

Section: Introductionmentioning

confidence: 99%

Movements and site fidelity of the bonefish Albula vulpes in northern Florida Keys determined by acoustic telemetry

Humston

Ault²,

Larkin

et al. 2005

Mar. Ecol. Prog. Ser.

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We used an acoustic telemetry system to test the hypothesis that the bonefish Albula vulpes exhibits site fidelity in selection of foraging areas in the northern Florida Keys. Stationary hydrophone receivers with data-logging units were deployed surrounding a discrete bonefish foraging area. Individuals were captured, fitted with acoustic transmitters, and then released within the study area. The reception ranges of receiver stations within the array were evaluated by moving a transmitter within the array. These data were used to assess spatial coverage of monitoring and decipher fine-scale movement patterns from recorded presence-absence data: 64% of tagged fish were detected by receivers for multiple days following release. Tagged fish frequented the experimental area for periods ranging from 3 to 61 d. Only 2 individuals, tracked for 48 and 61 d, demonstrated site fidelity characterized by daily movements into the study area. Our observations contradict earlier studies that concluded that bonefish range widely throughout available habitats, and suggest that bonefish utilize shallow habitats most, although deep channels may provide refuge from the rapid temperature changes that occur on the shallow flats.

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Site fidelity in temporally correlated environments enhances population persistence

Cited by 104 publications

References 51 publications

Bringing the Hutchinsonian niche into the 21st century: Ecological and evolutionary perspectives

Bringing the Hutchinsonian niche into the 21st century: Ecological and evolutionary perspectives

Symmetries and pattern formation in hyperbolic versus parabolic models of self-organised aggregation

Movements and site fidelity of the bonefish Albula vulpes in northern Florida Keys determined by acoustic telemetry

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