Population synchrony in ecological systems

Satake, Akiko; Koizumi, Itsuro

doi:10.1007/s10144-008-0107-3

Cited by 4 publications

(5 citation statements)

References 21 publications

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“…Overall, those studies from the Asian reservoirs had considered the timing and intensity of the monsoon as the regional drivers of seasonal and year-to-year variations of trophic status, but there were a few prior investigations on temporal asynchrony of trophic status, and the role of local-scale regulators were often ignored by most researchers. According to the theory of Moran effect (Hudson and Cattadori 1999 ; Liebhold et al 2004 ; Satake and Koizumi 2008 ), regional climatic factors could exert synchronous effects on trophic status in a single reservoir system. However, the present study did not show a clear case of the Moran effect, and found that local-scale regulators of Xiangxi Bay could disturb the responses of nonalgal turbidity limitation on regional scale factors.…”

Section: Discussionmentioning

confidence: 99%

“…Studies of synchrony in trophic state would contribute to improve our understanding of the relative role of local regulators and regional drivers on eutrophication processes. Many ecological processes are spatially autocorrelated (Lichstein et al 2002 ; Shurin et al 2009 ), so many ecologists have become more interested in temporal coherence of ecosystem property occurring over spatial scales (Satake and Koizumi 2008 ; Knowlton and Jones 2007 ; Patoine and Leavitt 2006 ; Liebhold et al 2004 ) since the concept “synchronization” initially proposed by Moran ( 1953 ). Magnuson et al ( 1990 ) defined temporal coherence as “the phenomenon of synchronous fluctuations in one or more parameters among different locations within a geographic region”.…”

Section: Introductionmentioning

confidence: 99%

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Temporal Asynchrony of Trophic Status Between Mainstream and Tributary Bay Within a Giant Dendritic Reservoir: The Role of Local-Scale Regulators

Shao

Han

et al. 2010

Water Air Soil Pollut

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Limnologists have regarded temporal coherence (synchrony) as a powerful tool for identifying the relative importance of local-scale regulators and regional climatic drivers on lake ecosystems. Limnological studies on Asian reservoirs have emphasized that climate and hydrology under the influences of monsoon are dominant factors regulating seasonal patterns of lake trophic status; yet, little is known of synchrony or asynchrony of trophic status in the single reservoir ecosystem. Based on monthly monitoring data of chlorophyll a, transparency, nutrients, and nonvolatile suspended solids (NVSS) during 1-year period, the present study evaluated temporal coherence to test whether local-scale regulators disturb the seasonal dynamics of trophic state indices (TSI) in a giant dendritic reservoir, China (Three Gorges Reservoir, TGR). Reservoir-wide coherences for TSICHL, TSISD, and TSITP showed dramatic variations over spatial scale, indicating temporal asynchrony of trophic status. Following the concept of TSI differences, algal productivity in the mainstream of TGR and Xiangxi Bay except the upstream of the bay were always limited by nonalgal turbidity (TSICHL−TSISD <0) rather than nitrogen and phosphorus (TSICHL−TSITN <0 and TSICHL−TSITP <0). The coherence analysis for TSI differences showed that local processes of Xiangxi Bay were the main responsible for local asynchrony of nonalgal turbidity limitation levels. Regression analysis further proved that local temporal asynchrony for TSISD and nonalgal turbidity limitation levels were regulated by local dynamics of NVSS, rather than geographical distance. The implications of the present study are to emphasize that the results of trophic status obtained from a single environment (reservoir mainstream) cannot be extrapolated to other environments (tributary bay) in a way that would allow its use as a sentinel site.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temporal Asynchrony of Trophic Status Between Mainstream and Tributary Bay Within a Giant Dendritic Reservoir: The Role of Local-Scale Regulators

Shao

Han

et al. 2010

Water Air Soil Pollut

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“…Spatial population synchrony is a well-known and seemingly ubiquitous phenomenon, occurring on local and regional scales across a wide range of different taxa (Bjørnstad et al 1999;Liebhold et al 2004;Ranta et al 2006;Kelly et al 2008a, b;Satake and Koizumi 2008). Three general explanations for population synchrony have been put forward.…”

Section: Introductionmentioning

confidence: 98%

Synchrony of spatial populations: heterogeneous population dynamics and reddened environmental noise

Liu

Gao

et al. 2008

Population Ecology

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Many species exhibit widespread spatial synchrony in population fluctuations. This pattern is of great ecological interest and can be a source of concern when a species is rare or endangered. Moran's theorem suggests that if two (or more) populations sharing a common linear density-dependence in the renewal process are disturbed with correlated noise, they will become synchronized with correlation matching the noise correlation. In this report, correlation of nonidentical populations that are described by linear and stationary autoregressive processes is analyzed. We show that the expected spatial synchrony between two populations can be decomposed into two multiplicative components. One is the demographic component related to the values of the autoregressive coefficients and the noise color. The other is the spatial correlation of the environmental colored noise. The main results are consistent with the predictions of previous experiments and simulations, and the importance of this report is to provide theoretical support.

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“…Coupling oscillator sets has already gained traction in the ecological literature [9][10][11][12][13][14][15][16][17][18][19][20], mostly from a theoretical perspective, including the potential to generate chaotic behaviour [20,21]. However, a perhaps more basic question stimulated by the pioneering work of Arthur Winfree [22] is what will be the patterns of synchrony within the collection of coupled oscillators?…”

Section: Introductionmentioning

confidence: 99%

“…Coupling oscillator sets has already gained traction in the ecological literature (e.g. Hastings, 1993;2001;Blasius and Stone, 2000;Earn et al, 1998;Goldwyn and Hastings, 2009;Wall et al, 2013;Satake, and Koizumi, 2008;Vandermeer, 1993;1994;2006), mostly from a theoretical perspective, including the potential to generate chaotic behavior (Hastings and Powell, 1991;Vandermeer, 2006). However, a perhaps more basic question stimulated by the pioneering work of Arthur Winfree (1967), is what will be the patterns of synchrony within the collection of coupled oscillators?…”

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confidence: 99%

New forms of structure in ecosystems revealed with the Kuramoto model

et al. 2021

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Ecological systems, as is often noted, are complex. Equally notable is the generalization that complex systems tend to be oscillatory, whether Huygens' simple patterns of pendulum entrainment or the twisted chaotic orbits of Lorenz’ convection rolls. The analytics of oscillators may thus provide insight into the structure of ecological systems. One of the most popular analytical tools for such study is the Kuramoto model of coupled oscillators. We apply this model as a stylized vision of the dynamics of a well-studied system of pests and their enemies, to ask whether its actual natural history is reflected in the dynamics of the qualitatively instantiated Kuramoto model. Emerging from the model is a series of synchrony groups generally corresponding to subnetworks of the natural system, with an overlying chimeric structure, depending on the strength of the inter-oscillator coupling. We conclude that the Kuramoto model presents a novel window through which interesting questions about the structure of ecological systems may emerge.

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Population synchrony in ecological systems

Cited by 4 publications

References 21 publications

Temporal Asynchrony of Trophic Status Between Mainstream and Tributary Bay Within a Giant Dendritic Reservoir: The Role of Local-Scale Regulators

Temporal Asynchrony of Trophic Status Between Mainstream and Tributary Bay Within a Giant Dendritic Reservoir: The Role of Local-Scale Regulators

Synchrony of spatial populations: heterogeneous population dynamics and reddened environmental noise

New forms of structure in ecosystems revealed with the Kuramoto model

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