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Hard to predict! No clear effects of home-field advantage on leaf litter decomposition in tropical heath vegetation

Published online by Cambridge University Press:  12 October 2022

Mery I. G. de Alencar*
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
André Y. S. P. Belo
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
José L. A. Silva
Affiliation:
Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Brazil
Ana E. B. Asato
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
Eduarda F. Gomes
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Valéria S. de Oliveira
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Jesiel de O. Teixeira
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Otávio de S. Monte
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Adriano S. Mota
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Vitória M. L. Pereira
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Sibele S. Dantas
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Gabriel H. S. Silva
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Bruno T. Goto
Affiliation:
Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Alexandre F. Souza
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
Adriano Caliman
Affiliation:
Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Natal, 59072-970, Brazil
*
Author for correspondence: Mery I. G. de Alencar, Email: merypynck@hotmail.com

Abstract

The home-field advantage (HFA) hypothesis establishes that plant litter decomposes faster at ‘home’ sites than in ‘away’ sites due to more specialized decomposers acting at home sites. This hypothesis has predominantly been tested through ‘yes or no’ transplanting experiments, where the litter decomposition of a focal species is quantified near and away from their conspecifics. Herein, we evaluated the occurrence and magnitude of home-field effects on the leaf litter decomposition of Myrcia ramuliflora (O.Berg) N. Silveira (Myrtaceae) along a natural gradient of conspecific litterfall input and also if home-field effects are affected by litter and soil traits. Litter decomposition of M. ramuliflora was assessed through litterbags placed in 39 plots in a tropical heath vegetation over a period of 12 months. We also characterized abiotic factors, litter layer traits, and litter diversity. Our results indicated the occurrence of positive (i.e. Home-field advantage) and negative (i.e. Home-field disadvantage) effects in more than half of the plots. Positive and negative effects occurred in a similar frequency and magnitude. Among all predictors tested, only the community weighted mean C/N ratio of the litterfall input was associated with home-field effects. Our results reinforce the lack of generality for home-field effects found in the literature and thus challenge the understanding of litter-decomposer interaction in tropical ecosystems.

Information

Type
Research Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press

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