J Plant Ecol ›› 2019, Vol. 12 ›› Issue (6): 1034-1046.doi: 10.1093/jpe/rtz037

Previous Articles     Next Articles

Arrested development? Investigating the role of bamboo in Araucaria Forest succession in Southern Brazil

Betina Kellermann and André Eduardo Biscaia Lacerda*   

  1. EMBRAPA Forestry, Brazilian Agriculture Research Corporation, Estrada da Ribeira, km 111, Caixa Postal 319, Colombo 83411-000, PR, Brazil
    *Correspondence address. EMBRAPA Forestry, Brazilian Agriculture Research Corporation, Estrada da Ribeira, km 111, Caixa Postal 319, Colombo 83411-000, PR, Brazil. Tel: +55-41-3675-3532; E-mail: andre.biscaia@ embrapa.br
  • Received:2018-09-21 Revised:2019-06-25 Accepted:2019-07-11 Online:2019-11-04 Published:2019-12-01

Abstract:

Aims

Assessing the role of a dominant native bamboo species on tree species diversity and structure in the medium term.

Methods

Over a 7-year period, we studied the natural regeneration of two dominant forest types in Southern Brazil (Araucaria Forest or AF; Bamboo Forest or BF) after a bamboo (Merostachys skvortzovii Send.) die-off between 2004 and 2006. The study was carried out in the Embrapa Research Station in Caçador, Santa Catarina State, Brazil.

Important Findings

The die-off provided ideal conditions for the establishment of several species and it kickstarted forest succession dynamics, which in turn affected regeneration diversity. Tree species richness was relatively stable with a transitory increase between 2007 and 2014 in both AF and BF. However, species richness rose in BF because of a relative increase in abundance of some species (especially late and secondary species) while a plunge in some pioneer species drove an increase in diversity. Overall, we found that BF has a lower diversity of recruits and that density declined over time, while AF is more diverse, with a more stable density. In BF, the bamboo die-off created optimal conditions for initial regeneration development (mainly fast-growing pioneer trees), which quickly transited to higher size classes. Yet, after this initial stage of pioneer recruitment, the number of recruits dropped followed by a virtual absence of growth regardless of the species group as a result of a quick bamboo reestablishment. As bamboo recreated a dense understory it reduced species diversity to original levels, suggesting a self-maintaining cycle that halts forest succession. On the other hand, the bamboo die-off had little impact on AF where a slow recruitment process typical of old-growth forests was observed. The results indicate that the die-off event had a temporary effect on species diversity i.e. restricted to forests where bamboos are dominant in a similar process described in other southern South American forests. As the first study to observe the medium-term forest dynamics related to bamboo die-off, we can conclude that when being dominant, native bamboos can hinder forest regeneration, maintaining lower levels of diversity and arresting forest succession that lasts well beyond the short-term, post-die-off effects. Many forest fragments in the region are dominated by bamboos, thus their potential for conservation is at risk and requires appropriate management.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Chaoyang Wu;*;Zheng Niu. Improvement in Linearity Between Hyperspectral Vegetation Indices and Chlorophyll Content, Leaf Area Index Based on Radiative Transfer Models[J]. Chin Bull Bot, 2008, 25(06): 714 -721 .
[2] Cui(Tsui)Cheng. General Aspects and Analysis of Plants Differentiation[J]. Chin Bull Bot, 1984, 2(04): 1 -6 .
[3] Yanli Ma, Haiyan Chen, Jigang Wang, Jianing Yu. Analysis of Editing Sites for Chloroplast ndhF in Ginkgo biloba and the Editing Efficiency at C290 in Response to Different Stresses[J]. Chin Bull Bot, 2011, 46(1): 1 -10 .
[4] HE Xin-Qiang CUI Ke-Ming. Progress in Study of Secondary Wall Formation in Plants[J]. Chin Bull Bot, 2002, 19(05): 513 -522 .
[5] WU Shun-Qing. Early Cretaceous Plants from Hong Kong[J]. Chin Bull Bot, 2000, 17(专辑): 218 -228 .
[6] MA Dong-Ming YANG Tai-Xin CHEN Qing-Liang ZHAI Zhi-Xi GUO Yu-Hai. In vitro Inoculation of Cistanche tubulosa Seeds on Tube Seedlings of Tamarix chinensis[J]. Chin Bull Bot, 2005, 22(06): 687 -691 .
[7] . [J]. Chin Bull Bot, 2004, 21(06): 689 -699 .
[8] LI Xin-Qi YUAN Long-Ping XIAO Jin-Hua DENG Qi-Yun. Breeding of Elite CMS Lines by Reverse Nuclear Substitution[J]. Chin Bull Bot, 2004, 21(03): 257 -262 .
[9] LIU Xue-Mei YANG Chuan-Ping. Megagametophyte and Embryo Development of Betula platyphylla in Northeastern China[J]. Chin Bull Bot, 2005, 22(02): 147 -152 .
[10] Yangying Gan;Songquan Song;Shaohua Li;Weiqing Wang;Hongyan Cheng. Development Phenophase and Germination Behavior of Vitis Seeds and Their Response to Cold Stratification[J]. Chin Bull Bot, 2009, 44(02): 202 -210 .