Biological filtering of correlated environments: towards a generalised Moran theorem
Ripa, Jörgen LU
and Ranta, E
(2007)
In Oikos
116(5).
p.783-792
- Abstract
- Many species from diverse taxa are known to display synchronous fluctuations across vast geographical ranges. It is often thought that climate factors influencing the growth of conspecific populations are correlated over large distances and hence produce the synchronous population dynamics - an effect known as the Moran effect. However, for species embedded in a food web the Moran effect needs not necessarily influence the focal species directly, but can act indirectly through other species. Such an indirect synchronization can also occur in an age-structured population, where the correlated environment of one age-class causes synchronous fluctuations of another. Here, we investigate this indirect Moran effect. We find first of all that... (More)
- Many species from diverse taxa are known to display synchronous fluctuations across vast geographical ranges. It is often thought that climate factors influencing the growth of conspecific populations are correlated over large distances and hence produce the synchronous population dynamics - an effect known as the Moran effect. However, for species embedded in a food web the Moran effect needs not necessarily influence the focal species directly, but can act indirectly through other species. Such an indirect synchronization can also occur in an age-structured population, where the correlated environment of one age-class causes synchronous fluctuations of another. Here, we investigate this indirect Moran effect. We find first of all that synchrony is readily transferred through food webs or between age classes, which complicates the identification of the underlying synchronizing factor. Secondly, we find puzzling cases, where synchrony is enhanced as it is filtered through a food web or between age-classes. Our results also apply to systems of different species, but with closely matching dynamics. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/168661
- author
- Ripa, Jörgen
LU
and Ranta, E
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Oikos
- volume
- 116
- issue
- 5
- pages
- 783 - 792
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000245814500008
- scopus:34247397980
- ISSN
- 1600-0706
- DOI
- 10.1111/j.0030-1299.2007.15497.x
- language
- English
- LU publication?
- yes
- id
- c35ef61e-647d-4aba-97c9-2003704135f7 (old id 168661)
- date added to LUP
- 2016-04-01 11:32:51
- date last changed
- 2022-04-05 01:40:30
@article{c35ef61e-647d-4aba-97c9-2003704135f7,
abstract = {{Many species from diverse taxa are known to display synchronous fluctuations across vast geographical ranges. It is often thought that climate factors influencing the growth of conspecific populations are correlated over large distances and hence produce the synchronous population dynamics - an effect known as the Moran effect. However, for species embedded in a food web the Moran effect needs not necessarily influence the focal species directly, but can act indirectly through other species. Such an indirect synchronization can also occur in an age-structured population, where the correlated environment of one age-class causes synchronous fluctuations of another. Here, we investigate this indirect Moran effect. We find first of all that synchrony is readily transferred through food webs or between age classes, which complicates the identification of the underlying synchronizing factor. Secondly, we find puzzling cases, where synchrony is enhanced as it is filtered through a food web or between age-classes. Our results also apply to systems of different species, but with closely matching dynamics.}},
author = {{Ripa, Jörgen and Ranta, E}},
issn = {{1600-0706}},
language = {{eng}},
number = {{5}},
pages = {{783--792}},
publisher = {{Wiley-Blackwell}},
series = {{Oikos}},
title = {{Biological filtering of correlated environments: towards a generalised Moran theorem}},
url = {{http://dx.doi.org/10.1111/j.0030-1299.2007.15497.x}},
doi = {{10.1111/j.0030-1299.2007.15497.x}},
volume = {{116}},
year = {{2007}},
}