Metacommunity patterns of Amazonian Odonata: the role of environmental gradients and major rivers.
Amazonia biogeographical regions
Anisoptera
Clementsian distributions
Habitat integrity
Macroclimate
Zygoptera
Journal
PeerJ
ISSN: 2167-8359
Titre abrégé: PeerJ
Pays: United States
ID NLM: 101603425
Informations de publication
Date de publication:
2019
2019
Historique:
received:
09
06
2018
accepted:
18
01
2019
entrez:
24
5
2019
pubmed:
24
5
2019
medline:
24
5
2019
Statut:
epublish
Résumé
We identified and classified damselfly (Zygoptera) and dragonfly (Anisoptera) metacommunities in Brazilian Amazonia, relating species distribution patterns to known biological gradients and biogeographical history. We expected a random distribution of both Zygoptera and Anisoptera within interfluves. At the Amazonian scale, we expected Anisoptera metacommunities to be randomly distributed due to their higher dispersal ability and large environmental tolerance. In contrast, we expected Zygoptera communities to exhibit a Clementsian pattern, limited by the large Amazonia rivers due to their low dispersal ability. We used a dataset of 58 first-to-third order well-sampled streamlets in four Amazonian interfluves and applied an extension of the Elements of Metacommunity Structure (EMS) framework, in which we order Zygoptera and Anisoptera metacommunities by known spatial and biogeographic predictors. At the Amazonian scale, both Zygoptera and Anisoptera presented a Clementsian pattern, driven by the same environmental and biogeographical predictors, namely biogeographic region (interfluve), annual mean temperature, habitat integrity and annual precipitation. At the interfluve scale, results were less consistent and only partially support our hypothesis. Zygoptera metacommunities at Guiana and Anisoptera metacommunities at Tapajós were classified as random, suggesting that neutral processes gain importance at smaller spatial scales. Our findings were consistent with previous studies showing that environmental gradients and major rivers limit the distribution of Odonata communities, supporting that larger Amazonian rivers act as barriers for the dispersal of this group. In addition, the importance of habitat integrity indicates that intactness of riparian vegetation is an important filter shaping metacommunity structure of Amazonian stream Odonata.
Sections du résumé
BACKGROUND
BACKGROUND
We identified and classified damselfly (Zygoptera) and dragonfly (Anisoptera) metacommunities in Brazilian Amazonia, relating species distribution patterns to known biological gradients and biogeographical history. We expected a random distribution of both Zygoptera and Anisoptera within interfluves. At the Amazonian scale, we expected Anisoptera metacommunities to be randomly distributed due to their higher dispersal ability and large environmental tolerance. In contrast, we expected Zygoptera communities to exhibit a Clementsian pattern, limited by the large Amazonia rivers due to their low dispersal ability.
METHODS
METHODS
We used a dataset of 58 first-to-third order well-sampled streamlets in four Amazonian interfluves and applied an extension of the Elements of Metacommunity Structure (EMS) framework, in which we order Zygoptera and Anisoptera metacommunities by known spatial and biogeographic predictors.
RESULTS
RESULTS
At the Amazonian scale, both Zygoptera and Anisoptera presented a Clementsian pattern, driven by the same environmental and biogeographical predictors, namely biogeographic region (interfluve), annual mean temperature, habitat integrity and annual precipitation. At the interfluve scale, results were less consistent and only partially support our hypothesis. Zygoptera metacommunities at Guiana and Anisoptera metacommunities at Tapajós were classified as random, suggesting that neutral processes gain importance at smaller spatial scales.
DISCUSSION
CONCLUSIONS
Our findings were consistent with previous studies showing that environmental gradients and major rivers limit the distribution of Odonata communities, supporting that larger Amazonian rivers act as barriers for the dispersal of this group. In addition, the importance of habitat integrity indicates that intactness of riparian vegetation is an important filter shaping metacommunity structure of Amazonian stream Odonata.
Identifiants
pubmed: 31119064
doi: 10.7717/peerj.6472
pii: 6472
pmc: PMC6507913
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e6472Déclaration de conflit d'intérêts
The authors declare there are no competing interests.
Références
Proc Natl Acad Sci U S A. 2000 Dec 5;97(25):13672-7
pubmed: 11095705
Braz J Biol. 2001 May;61(2):295-304
pubmed: 11514897
Science. 2003 Jan 10;299(5604):241-4
pubmed: 12522248
Nature. 2006 Sep 28;443(7110):444-7
pubmed: 17006512
Oecologia. 2013 Apr;171(4):971-80
pubmed: 22961400
Ecology. 2012 Dec;93(12):2533-47
pubmed: 23431585
Glob Chang Biol. 2014 Feb;20(2):475-82
pubmed: 23913531
PLoS One. 2014 Feb 13;9(2):e88958
pubmed: 24551197
J Biogeogr. 2013 Aug 1;40(8):1560-1571
pubmed: 24790288
Nat Commun. 2014 Jun 11;5:4114
pubmed: 24916345
Mol Phylogenet Evol. 2015 Jan;82 Pt B:436-54
pubmed: 25305518
An Acad Bras Cienc. 2015 Mar;87(1):239-48
pubmed: 25806986
PLoS One. 2015 Apr 23;10(4):e0123023
pubmed: 25906243
Oecologia. 2016 Sep;182(1):219-29
pubmed: 27160426
Neotrop Entomol. 2018 Feb;47(1):37-45
pubmed: 28285400
Ecol Evol. 2017 Mar 31;7(9):3190-3200
pubmed: 28480018
Sci Rep. 2018 Feb 21;8(1):3427
pubmed: 29467442