Predictions of Taylor's power law, density dependence and pink noise from a neutrally modeled time series

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10072321" target="_blank" >RIV/00216208:11310/10:10072321 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11620/10:10072321 RIV/67985939:_____/10:00370278

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Predictions of Taylor's power law, density dependence and pink noise from a neutrally modeled time series

Popis výsledku v původním jazyce

We investigated the ability of a neutral model to predict phenomena observed in single-population time series. We consider tests for density dependence, spectral density, and a relationship between the mean and variance of a fluctuating population (Taylor's power law). Our spectral analysis showed 'pink noise': a departure from a standard random walk dynamics in favor of the higher frequency fluctuations which is consistent with empirical data. We detected density dependence in local community time series but not in metacommunity time series. The slope of the Taylor's power law in the model was similar to the slopes observed in natural populations, but the fit was worse. We conclude that some of the phenomena observed in natural time series can emergefrom neutral processes, as a result of random zero-sum death, birth and migration. This suggests the neutral model would be a parsimonious null model for future studies of time series data.

Název v anglickém jazyce

Predictions of Taylor's power law, density dependence and pink noise from a neutrally modeled time series

Popis výsledku anglicky

We investigated the ability of a neutral model to predict phenomena observed in single-population time series. We consider tests for density dependence, spectral density, and a relationship between the mean and variance of a fluctuating population (Taylor's power law). Our spectral analysis showed 'pink noise': a departure from a standard random walk dynamics in favor of the higher frequency fluctuations which is consistent with empirical data. We detected density dependence in local community time series but not in metacommunity time series. The slope of the Taylor's power law in the model was similar to the slopes observed in natural populations, but the fit was worse. We conclude that some of the phenomena observed in natural time series can emergefrom neutral processes, as a result of random zero-sum death, birth and migration. This suggests the neutral model would be a parsimonious null model for future studies of time series data.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Theoretical Biology

ISSN

0022-5193

e-ISSN

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Svazek periodika

265

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000278928600008

EID výsledku v databázi Scopus

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