Local drivers of the structure of a tropical bird ‑ seed dispersal network

Local drivers of the structure of a tropical bird ‑ seed dispersal network

One of the major challenges in ecology is to understand the relative importance of neutral- and niche-based processes structuring species interactions within communities. The concept of neutral-based processes posits that network structure is a result of interactions between species based on their abundance. On the other hand, niche-based processes presume that network structure is shaped by constraints to interactions. Here, we evaluated the relative importance of neutral-based process, represented by species’ abundance (A) and fruit production (F) models, and niche-based process, represented by spatial overlap (S), temporal overlap (T) and morphological barrier (M) models, in shaping the structure of a bird-seed dispersal network from the Brazilian Atlantic Forest. We evaluated the ability of each model, singly or in combination, to predict the general structure [represented by connectance, nestedness (NODF), weight nestedness (WNODF), interaction evenness and complementary specialization] and microstructure of the network (i.e., the frequency of pairwise interactions). Only nestedness (both NODF and WNODF) was predicted by at least one model. NODF and WNODF were predicted by a neutral-based process (A), by a combination of niche-based processes (ST and STM) and by both neutral- and niche-based processes (AM). NODF was also predicted by F and FM model. Regarding microstructure, temporal overlap (T) was the most parsimonious model able to predict it. Our findings reveal that a combination of neutral- and niche-based processes is a good predictor of the general structure (NODF and WNODF) of the bird-seed dispersal network and a niche-based process is the best predictor of the network’s microstructure.

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Main Authors: Machado de Souza, Tiago, Pamplona Campos, Ricardo, Devoto, Mariano, Galarda Varassin, Isabela
Format: Texto biblioteca
Language:eng
Subjects:ATLANTIC FOREST, FORBIDDEN LINKS, FRUGIVORY, MUTUALISTIC NETWORK, NEUTRALITY, ,
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id KOHA-OAI-AGRO:47578
record_format koha
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
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databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic ATLANTIC FOREST
FORBIDDEN LINKS
FRUGIVORY
MUTUALISTIC NETWORK
NEUTRALITY

ATLANTIC FOREST
FORBIDDEN LINKS
FRUGIVORY
MUTUALISTIC NETWORK
NEUTRALITY
spellingShingle ATLANTIC FOREST
FORBIDDEN LINKS
FRUGIVORY
MUTUALISTIC NETWORK
NEUTRALITY

ATLANTIC FOREST
FORBIDDEN LINKS
FRUGIVORY
MUTUALISTIC NETWORK
NEUTRALITY
Machado de Souza, Tiago
Pamplona Campos, Ricardo
Devoto, Mariano
Galarda Varassin, Isabela
Local drivers of the structure of a tropical bird ‑ seed dispersal network
description One of the major challenges in ecology is to understand the relative importance of neutral- and niche-based processes structuring species interactions within communities. The concept of neutral-based processes posits that network structure is a result of interactions between species based on their abundance. On the other hand, niche-based processes presume that network structure is shaped by constraints to interactions. Here, we evaluated the relative importance of neutral-based process, represented by species’ abundance (A) and fruit production (F) models, and niche-based process, represented by spatial overlap (S), temporal overlap (T) and morphological barrier (M) models, in shaping the structure of a bird-seed dispersal network from the Brazilian Atlantic Forest. We evaluated the ability of each model, singly or in combination, to predict the general structure [represented by connectance, nestedness (NODF), weight nestedness (WNODF), interaction evenness and complementary specialization] and microstructure of the network (i.e., the frequency of pairwise interactions). Only nestedness (both NODF and WNODF) was predicted by at least one model. NODF and WNODF were predicted by a neutral-based process (A), by a combination of niche-based processes (ST and STM) and by both neutral- and niche-based processes (AM). NODF was also predicted by F and FM model. Regarding microstructure, temporal overlap (T) was the most parsimonious model able to predict it. Our findings reveal that a combination of neutral- and niche-based processes is a good predictor of the general structure (NODF and WNODF) of the bird-seed dispersal network and a niche-based process is the best predictor of the network’s microstructure.
format Texto
topic_facet
ATLANTIC FOREST
FORBIDDEN LINKS
FRUGIVORY
MUTUALISTIC NETWORK
NEUTRALITY
author Machado de Souza, Tiago
Pamplona Campos, Ricardo
Devoto, Mariano
Galarda Varassin, Isabela
author_facet Machado de Souza, Tiago
Pamplona Campos, Ricardo
Devoto, Mariano
Galarda Varassin, Isabela
author_sort Machado de Souza, Tiago
title Local drivers of the structure of a tropical bird ‑ seed dispersal network
title_short Local drivers of the structure of a tropical bird ‑ seed dispersal network
title_full Local drivers of the structure of a tropical bird ‑ seed dispersal network
title_fullStr Local drivers of the structure of a tropical bird ‑ seed dispersal network
title_full_unstemmed Local drivers of the structure of a tropical bird ‑ seed dispersal network
title_sort local drivers of the structure of a tropical bird ‑ seed dispersal network
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47578
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http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
work_keys_str_mv AT machadodesouzatiago localdriversofthestructureofatropicalbirdseeddispersalnetwork
AT pamplonacamposricardo localdriversofthestructureofatropicalbirdseeddispersalnetwork
AT devotomariano localdriversofthestructureofatropicalbirdseeddispersalnetwork
AT galardavarassinisabela localdriversofthestructureofatropicalbirdseeddispersalnetwork
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spelling KOHA-OAI-AGRO:475782022-09-16T11:12:27Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=47578http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGLocal drivers of the structure of a tropical bird ‑ seed dispersal networkMachado de Souza, TiagoPamplona Campos, RicardoDevoto, MarianoGalarda Varassin, Isabelatextengapplication/pdfOne of the major challenges in ecology is to understand the relative importance of neutral- and niche-based processes structuring species interactions within communities. The concept of neutral-based processes posits that network structure is a result of interactions between species based on their abundance. On the other hand, niche-based processes presume that network structure is shaped by constraints to interactions. Here, we evaluated the relative importance of neutral-based process, represented by species’ abundance (A) and fruit production (F) models, and niche-based process, represented by spatial overlap (S), temporal overlap (T) and morphological barrier (M) models, in shaping the structure of a bird-seed dispersal network from the Brazilian Atlantic Forest. We evaluated the ability of each model, singly or in combination, to predict the general structure [represented by connectance, nestedness (NODF), weight nestedness (WNODF), interaction evenness and complementary specialization] and microstructure of the network (i.e., the frequency of pairwise interactions). Only nestedness (both NODF and WNODF) was predicted by at least one model. NODF and WNODF were predicted by a neutral-based process (A), by a combination of niche-based processes (ST and STM) and by both neutral- and niche-based processes (AM). NODF was also predicted by F and FM model. Regarding microstructure, temporal overlap (T) was the most parsimonious model able to predict it. Our findings reveal that a combination of neutral- and niche-based processes is a good predictor of the general structure (NODF and WNODF) of the bird-seed dispersal network and a niche-based process is the best predictor of the network’s microstructure.One of the major challenges in ecology is to understand the relative importance of neutral- and niche-based processes structuring species interactions within communities. The concept of neutral-based processes posits that network structure is a result of interactions between species based on their abundance. On the other hand, niche-based processes presume that network structure is shaped by constraints to interactions. Here, we evaluated the relative importance of neutral-based process, represented by species’ abundance (A) and fruit production (F) models, and niche-based process, represented by spatial overlap (S), temporal overlap (T) and morphological barrier (M) models, in shaping the structure of a bird-seed dispersal network from the Brazilian Atlantic Forest. We evaluated the ability of each model, singly or in combination, to predict the general structure [represented by connectance, nestedness (NODF), weight nestedness (WNODF), interaction evenness and complementary specialization] and microstructure of the network (i.e., the frequency of pairwise interactions). Only nestedness (both NODF and WNODF) was predicted by at least one model. NODF and WNODF were predicted by a neutral-based process (A), by a combination of niche-based processes (ST and STM) and by both neutral- and niche-based processes (AM). NODF was also predicted by F and FM model. Regarding microstructure, temporal overlap (T) was the most parsimonious model able to predict it. Our findings reveal that a combination of neutral- and niche-based processes is a good predictor of the general structure (NODF and WNODF) of the bird-seed dispersal network and a niche-based process is the best predictor of the network’s microstructure.ATLANTIC FORESTFORBIDDEN LINKSFRUGIVORYMUTUALISTIC NETWORKNEUTRALITYOecologia

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