Architectural classes of aquatic food webs based on link distribution

Ferenc Jordán, I. Scheuring, V. Vasas, J. Podaní

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Link distribution is an important architectural feature of ecological networks, since it is thought to influence community dynamics. Several attempts have been made in order to characterize the typical link distribution of food webs, but the number of webs studied thus far is low and their quality is unbalanced. Comparability is a rarely asked methodological question, and as far as we see only two data bases are available which allow reliable comparison of food webs: one for terrestrial, high resolution, host-parasitoid webs and another for highly aggregated, marine trophic networks. We present an analysis of a set of food webs belonging to the latter type, since the host-parasitoid networks are only subgraphs and therefore uninformative on the structure of the entire community. We address the following three questions: (1) how to characterize the link distribution of these small networks which cannot always be fitted statistically to well-known distributions (such as the exponential or the Poisson, etc.), (2) are these distributions of more or less similar shape or they belong to different "architectural classes", and (3) if there are different classes, then what are their distinctive topological and biological properties. We suggest that link distribution of such small networks can be compared to each other by principal coordinates ordination and clustering. We conclude that (1) the webs can be categorized into two different classes, and (2) one of the classes contains significantly larger and topologically more heterogeneous webs for which net output of material is also of higher variance. We emphasize that link distribution is an interesting and important property not only in case of complex, speciose food webs, but also in highly aggregated, low-resolution webs.

Original languageEnglish
Pages (from-to)81-90
Number of pages10
JournalCommunity Ecology
Volume7
Issue number1
DOIs
Publication statusPublished - 2006

Fingerprint

aquatic food webs
Food Chain
food web
food webs
parasitoid
Cluster Analysis
Databases
community structure
community dynamics
distribution
ordination

Keywords

  • Aquatic ecosystems
  • Classification
  • Food web
  • Link distribution
  • Network
  • Ordination

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Architectural classes of aquatic food webs based on link distribution. / Jordán, Ferenc; Scheuring, I.; Vasas, V.; Podaní, J.

In: Community Ecology, Vol. 7, No. 1, 2006, p. 81-90.

Research output: Contribution to journalArticle

@article{74088b1e281c4291bbb3deca68675a5e,
title = "Architectural classes of aquatic food webs based on link distribution",
abstract = "Link distribution is an important architectural feature of ecological networks, since it is thought to influence community dynamics. Several attempts have been made in order to characterize the typical link distribution of food webs, but the number of webs studied thus far is low and their quality is unbalanced. Comparability is a rarely asked methodological question, and as far as we see only two data bases are available which allow reliable comparison of food webs: one for terrestrial, high resolution, host-parasitoid webs and another for highly aggregated, marine trophic networks. We present an analysis of a set of food webs belonging to the latter type, since the host-parasitoid networks are only subgraphs and therefore uninformative on the structure of the entire community. We address the following three questions: (1) how to characterize the link distribution of these small networks which cannot always be fitted statistically to well-known distributions (such as the exponential or the Poisson, etc.), (2) are these distributions of more or less similar shape or they belong to different {"}architectural classes{"}, and (3) if there are different classes, then what are their distinctive topological and biological properties. We suggest that link distribution of such small networks can be compared to each other by principal coordinates ordination and clustering. We conclude that (1) the webs can be categorized into two different classes, and (2) one of the classes contains significantly larger and topologically more heterogeneous webs for which net output of material is also of higher variance. We emphasize that link distribution is an interesting and important property not only in case of complex, speciose food webs, but also in highly aggregated, low-resolution webs.",
keywords = "Aquatic ecosystems, Classification, Food web, Link distribution, Network, Ordination",
author = "Ferenc Jord{\'a}n and I. Scheuring and V. Vasas and J. Podan{\'i}",
year = "2006",
doi = "10.1556/ComEc.7.2006.1.8",
language = "English",
volume = "7",
pages = "81--90",
journal = "Community Ecology",
issn = "1585-8553",
publisher = "Akademiai Kiado",
number = "1",

}

TY - JOUR

T1 - Architectural classes of aquatic food webs based on link distribution

AU - Jordán, Ferenc

AU - Scheuring, I.

AU - Vasas, V.

AU - Podaní, J.

PY - 2006

Y1 - 2006

N2 - Link distribution is an important architectural feature of ecological networks, since it is thought to influence community dynamics. Several attempts have been made in order to characterize the typical link distribution of food webs, but the number of webs studied thus far is low and their quality is unbalanced. Comparability is a rarely asked methodological question, and as far as we see only two data bases are available which allow reliable comparison of food webs: one for terrestrial, high resolution, host-parasitoid webs and another for highly aggregated, marine trophic networks. We present an analysis of a set of food webs belonging to the latter type, since the host-parasitoid networks are only subgraphs and therefore uninformative on the structure of the entire community. We address the following three questions: (1) how to characterize the link distribution of these small networks which cannot always be fitted statistically to well-known distributions (such as the exponential or the Poisson, etc.), (2) are these distributions of more or less similar shape or they belong to different "architectural classes", and (3) if there are different classes, then what are their distinctive topological and biological properties. We suggest that link distribution of such small networks can be compared to each other by principal coordinates ordination and clustering. We conclude that (1) the webs can be categorized into two different classes, and (2) one of the classes contains significantly larger and topologically more heterogeneous webs for which net output of material is also of higher variance. We emphasize that link distribution is an interesting and important property not only in case of complex, speciose food webs, but also in highly aggregated, low-resolution webs.

AB - Link distribution is an important architectural feature of ecological networks, since it is thought to influence community dynamics. Several attempts have been made in order to characterize the typical link distribution of food webs, but the number of webs studied thus far is low and their quality is unbalanced. Comparability is a rarely asked methodological question, and as far as we see only two data bases are available which allow reliable comparison of food webs: one for terrestrial, high resolution, host-parasitoid webs and another for highly aggregated, marine trophic networks. We present an analysis of a set of food webs belonging to the latter type, since the host-parasitoid networks are only subgraphs and therefore uninformative on the structure of the entire community. We address the following three questions: (1) how to characterize the link distribution of these small networks which cannot always be fitted statistically to well-known distributions (such as the exponential or the Poisson, etc.), (2) are these distributions of more or less similar shape or they belong to different "architectural classes", and (3) if there are different classes, then what are their distinctive topological and biological properties. We suggest that link distribution of such small networks can be compared to each other by principal coordinates ordination and clustering. We conclude that (1) the webs can be categorized into two different classes, and (2) one of the classes contains significantly larger and topologically more heterogeneous webs for which net output of material is also of higher variance. We emphasize that link distribution is an interesting and important property not only in case of complex, speciose food webs, but also in highly aggregated, low-resolution webs.

KW - Aquatic ecosystems

KW - Classification

KW - Food web

KW - Link distribution

KW - Network

KW - Ordination

UR - http://www.scopus.com/inward/record.url?scp=33746368723&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33746368723&partnerID=8YFLogxK

U2 - 10.1556/ComEc.7.2006.1.8

DO - 10.1556/ComEc.7.2006.1.8

M3 - Article

AN - SCOPUS:33746368723

VL - 7

SP - 81

EP - 90

JO - Community Ecology

JF - Community Ecology

SN - 1585-8553

IS - 1

ER -