Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia

By logging in the past, humans can determine current tree population structures, but fast stump decomposition makes difficult to falsify that for Amazonian Rainforests. We reconstructed land-use histories and surveyed trees ≥ 10 cm diameter at breast height on three 1-ha plots (K1, K2, and K6) in Kü...

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Main Authors: Garrido-Perez Edgardo I., Lincango-Vega Juan G., Tella-Ruiz David, Arias-Pizarro Maria I., Bonilla Karen, Cabrera Jairo, Roman Horus J.
Format: Article
Language:English
Published: Sciendo 2021-03-01
Series:Ekológia (Bratislava)
Subjects:
Online Access:https://doi.org/10.2478/eko-2021-0005
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author Garrido-Perez Edgardo I.
Lincango-Vega Juan G.
Tella-Ruiz David
Arias-Pizarro Maria I.
Bonilla Karen
Cabrera Jairo
Roman Horus J.
author_facet Garrido-Perez Edgardo I.
Lincango-Vega Juan G.
Tella-Ruiz David
Arias-Pizarro Maria I.
Bonilla Karen
Cabrera Jairo
Roman Horus J.
author_sort Garrido-Perez Edgardo I.
collection DOAJ
description By logging in the past, humans can determine current tree population structures, but fast stump decomposition makes difficult to falsify that for Amazonian Rainforests. We reconstructed land-use histories and surveyed trees ≥ 10 cm diameter at breast height on three 1-ha plots (K1, K2, and K6) in Kühbergl, South Tyrolean Alps as we did for four plots in Atacapi, Ecuador (plots A, B, C, and D). Storm Vaia (October 27 –November 1, 2018) stroke Kübergl providing dated evidence of mass tree-mortality on plot K6. We used K6 as control for comparing its pre- and post-storm population structures with the ones of four Amazonian, and three Alpine species where Vaia did not kill trees (Kolmogorov-Smirnov tests). When compared with K6’s Picea abies, the following species had size distributions similar to post-storm, but not to pre-storm situation. Amazonian: Piptocoma discolor, Vochysia bracelineae (plots B and D), Miconia decurrens (plots B and C), and Pseudobombax sp (plot C). Alpine: Larix decidua (plot K1) and Picea abies (plot K2). Storms do not occur in Atacapi, where logging is a common practice. That makes plausible that discrete events of compulsive logging during secondary succession made Amazonian population structures to look similar to K6’s P. abies. Logging is forbidden in Kühbergl, but storms are common there. Thus, the current population structures of Larix decidua (plot K1) and Picea abies (plot K2) should be legacies of storms before Vaia. Looking into tree populations’ history can impulse research for answering some basic questions of Ecology: what alters population structures, and which population structuring processes are more influential than others.
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spelling doaj.art-697e52e26694473fbae08bc714865afc2022-12-21T21:47:44ZengSciendoEkológia (Bratislava)1337-947X2021-03-01401374710.2478/eko-2021-0005Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm VaiaGarrido-Perez Edgardo I.0Lincango-Vega Juan G.1Tella-Ruiz David2Arias-Pizarro Maria I.3Bonilla Karen4Cabrera Jairo5Roman Horus J.6Asociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainAsociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainAsociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainAsociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainAsociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainAsociació Llapis i Llavors, Calle Aragó 565 bajos, Barcelona, SpainUniversidad Yachay Tech, San Miguel de Urcuquí, Hacienda San José s/n, Imbabura, EcuadorBy logging in the past, humans can determine current tree population structures, but fast stump decomposition makes difficult to falsify that for Amazonian Rainforests. We reconstructed land-use histories and surveyed trees ≥ 10 cm diameter at breast height on three 1-ha plots (K1, K2, and K6) in Kühbergl, South Tyrolean Alps as we did for four plots in Atacapi, Ecuador (plots A, B, C, and D). Storm Vaia (October 27 –November 1, 2018) stroke Kübergl providing dated evidence of mass tree-mortality on plot K6. We used K6 as control for comparing its pre- and post-storm population structures with the ones of four Amazonian, and three Alpine species where Vaia did not kill trees (Kolmogorov-Smirnov tests). When compared with K6’s Picea abies, the following species had size distributions similar to post-storm, but not to pre-storm situation. Amazonian: Piptocoma discolor, Vochysia bracelineae (plots B and D), Miconia decurrens (plots B and C), and Pseudobombax sp (plot C). Alpine: Larix decidua (plot K1) and Picea abies (plot K2). Storms do not occur in Atacapi, where logging is a common practice. That makes plausible that discrete events of compulsive logging during secondary succession made Amazonian population structures to look similar to K6’s P. abies. Logging is forbidden in Kühbergl, but storms are common there. Thus, the current population structures of Larix decidua (plot K1) and Picea abies (plot K2) should be legacies of storms before Vaia. Looking into tree populations’ history can impulse research for answering some basic questions of Ecology: what alters population structures, and which population structuring processes are more influential than others.https://doi.org/10.2478/eko-2021-0005alpine wet tundradisturbanceland-use historytree sizestropical rainforest
spellingShingle Garrido-Perez Edgardo I.
Lincango-Vega Juan G.
Tella-Ruiz David
Arias-Pizarro Maria I.
Bonilla Karen
Cabrera Jairo
Roman Horus J.
Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
Ekológia (Bratislava)
alpine wet tundra
disturbance
land-use history
tree sizes
tropical rainforest
title Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
title_full Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
title_fullStr Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
title_full_unstemmed Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
title_short Mass Mortality as a Way of Structuring Amazonian and Alpine Tree Populations: Evidence After Storm Vaia
title_sort mass mortality as a way of structuring amazonian and alpine tree populations evidence after storm vaia
topic alpine wet tundra
disturbance
land-use history
tree sizes
tropical rainforest
url https://doi.org/10.2478/eko-2021-0005
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