Dry weight loss in leaves of dominant species in a successional sequence of the Mesopotamian Espinal (Argentina)

  1. Mendoza, Carlos A.
  2. Gallardo, Juan F.
  3. Turrión, Maria B.
  4. Pando, Valentín
  5. Aceñolaza, Pablo G.
Revista:
Forest systems

ISSN: 2171-5068

Any de publicació: 2017

Volum: 26

Número: 3

Tipus: Article

DOI: 10.5424/FS/2017263-11561 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Altres publicacions en: Forest systems

Objectius de Desenvolupament Sostenible

Resum

Aim of study: compare litter decomposition dynamics among different species within a single forest type and also between a single species in different forest successional stages.Area of study: different forests of a known successional sequence of the Mesopotamian Espinal, placed in Villaguay Department, Entre Ríos Province, Argentina.Material and methods: A standard “litter bags” technique was employed. Chemical analyses of C and N were performed for leaves. A regression analysis was applied and data were fitted to a double exponential model. Means estimated among forests and species within each forest were compared using the Tukey-Kramer test.Main results: The model predicted that leaves would completely mineralize in the mid-term. Leaf decomposition rate in different species (both in the Secondary forest and Mature forest) had dry matter residues in the following decreasing order: Acacia caven > Prosopis nigra > Prosopis affinis > Celtis ehrenbergiana. Research highlights: Successional stage was not found to be a factor determining the decomposition rate among species. Different decomposition rates, observed among different species, would not be attributed to initial quality of residues in terms of C and N, but would be associated with a positive feedback process related to nutrient cycle; thus, a greater decomposition would increase nutrient availability and, consequently, litterfall input.

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Aim of study: To compare litter decomposition dynamics among different species within a single forest type and also between a single species in different forest successional stages. Area of study: Different forests of a known successional sequence of the Mesopotamian Espinal, placed in Villaguay Department, Entre Ríos Province, Argentina. Material and methods: A standard “litter bags” technique was employed. Chemical analyses of C and N were performed for leaves. A regression analysis was applied and data were fitted to a double exponential model. Means estimated among forests and species within each forest were compared using the Tukey-Kramer test. Main results: The model predicted that leaves would completely mineralize in the mid-term. Leaf decomposition rate in different species (both in the Secondary forest and Mature forest) had dry matter residues in the following decreasing order: Acacia caven > Prosopis nigra > Prosopis affinis > Celtis ehrenbergiana. Research highlights: Successional stage was not found to be a factor determining the decomposition rate among species. Different decomposition rates, observed among different species, would not be attributed to initial quality of residues in terms of C and N, but would be associated with a positive feedback process related to nutrient cycle; thus, a greater decomposition would increase nutrient availability and, consequently, litterfall input. Additional keywords: organic matter; decomposition; litter; dry forest; modeling; plant succession. Abbreviations used: IF (Initial Forest); MF (Mature Forest); SF (Secondary Forest). Authors´ contributions: CAM and PGA performed the experiments and wrote the paper with JFGL. MBT and VP analyzed the data. Citation: Mendoza, C. A.; Gallardo, J. F.; Turrión, M. B.; Pando, V.; Aceñolaza, P. G. (2017). Dry weight loss in leaves of dominant species in a successional sequence of the Mesopotamian Espinal (Argentina). Forest Systems, Volume 26, Issue 3, e017. https://doi. org/10.5424/fs/2017263-11561. Received: 19 Apr 2017 Accepted: 12 Dec 2017 Copyright © 2017 INIA. This is an open access article distributed under the terms of the Creative Commons Attribution (CC-by) Spain 3.0 License. Funding: UADER, Paraná, Argentina (Projects PIDA–2009 and PIDP-2015); Erasmus Mundus program (funded the stay in Spain and the work performed by CAM at the ETSIA, University of Valladolid, Spain, and at IRNASa, CSIC, Salamanca, Spain). Competing interests: The authors have declared that no competing interests exist. Correspondence should be addressed to Pablo G. Aceñolaza: acenolaza@gmail.com

Finançadors

    • PIDP-2015

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Fuente de los datos: Dialnet