Flood-pulse disturbances as a threat for long-living Amazonian trees

Resende, Angélica F.; Piedade, Maria Teresa Fernandez; Feitosa, Yuri Oliveira; Andrade, Victor Hugo F.; Trumbore, Susan Elizabeth; Durgante, Flávia Machado; Macedo, Maíra O.; Schöngart, Jochen

Artigo

Flood-pulse disturbances as a threat for long-living Amazonian trees

The long-lived tree species Eschweilera tenuifolia (O. Berg) Miers is characteristic of oligotrophic Amazonian black-water floodplain forests (igapó), seasonally inundated up to 10 months per year, often forming monodominant stands. We investigated E. tenuifolia' growth and mortality patterns in und...

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Autor principal:	Resende, Angélica F.
Outros Autores:	Piedade, Maria Teresa Fernandez, Feitosa, Yuri Oliveira, Andrade, Victor Hugo F., Trumbore, Susan Elizabeth, Durgante, Flávia Machado, Macedo, Maíra O., Schöngart, Jochen
Grau:	Artigo
Idioma:	English
Publicado em:	The New phytologist 2020
Assuntos:	Eschweilera Tenuifolia Balbina extreme climatic events hydroclimatic disturbance Hydroelectric Dam radiocarbon en
Acesso em linha:	https://repositorio.inpa.gov.br/handle/1/23271

id	oai:repositorio:1-23271
recordtype	dspace
spelling	oai:repositorio:1-23271 Flood-pulse disturbances as a threat for long-living Amazonian trees Resende, Angélica F. Piedade, Maria Teresa Fernandez Feitosa, Yuri Oliveira Andrade, Victor Hugo F. Trumbore, Susan Elizabeth Durgante, Flávia Machado Macedo, Maíra O. Schöngart, Jochen Eschweilera Tenuifolia Balbina extreme climatic events hydroclimatic disturbance Hydroelectric Dam radiocarbon en The long-lived tree species Eschweilera tenuifolia (O. Berg) Miers is characteristic of oligotrophic Amazonian black-water floodplain forests (igapó), seasonally inundated up to 10 months per year, often forming monodominant stands. We investigated E. tenuifolia' growth and mortality patterns in undisturbed (Jaú National Park - JNP) and disturbed igapós (Uatumã Sustainable Development Reserve - USDR, downstream of the Balbina hydroelectric dam). We analysed age-diameter relationships, basal area increment (BAI) through 5-cm diameter classes, growth changes and growth ratios preceding death, BAI clustering, BAI ratio, and dated the individual year of death (14 C). Growth and mortality patterns were then related to climatic or anthropogenic disturbances. Results were similar for both populations for estimated maximum ages (JNP, 466 yr; USDR, 498 yr, except for one USDR tree with an estimated age of 820 yr) and slightly different for mean diameter increment (JNP: 2.04 mm; USDR: 2.28 mm). Living trees from JNP showed altered growth post-1975 and sparse tree mortality occurred at various times, possibly induced by extreme hydroclimatic events. In contrast with the JNP, abrupt growth changes and massive mortality occurred in the USDR after the dam construction began (1983). Even more than 30 yr after dam construction, flood-pulse alteration continues to affect both growth and mortality of E. tenuifolia. Besides its vulnerability to anthropogenic disturbances, this species is also susceptible to long-lasting dry and wet periods induced by climatic events, the combination of both processes may cause its local and regional extinction. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust. 2020-07-03T21:50:47Z 2020-07-03T21:50:47Z 2020 Artigo https://repositorio.inpa.gov.br/handle/1/23271 10.1111/nph.16665 en Restrito The New phytologist
institution	Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection	INPA-RI
language	English
topic	Eschweilera Tenuifolia Balbina extreme climatic events hydroclimatic disturbance Hydroelectric Dam radiocarbon en
spellingShingle	Eschweilera Tenuifolia Balbina extreme climatic events hydroclimatic disturbance Hydroelectric Dam radiocarbon en Resende, Angélica F. Flood-pulse disturbances as a threat for long-living Amazonian trees
topic_facet	Eschweilera Tenuifolia Balbina extreme climatic events hydroclimatic disturbance Hydroelectric Dam radiocarbon en
description	The long-lived tree species Eschweilera tenuifolia (O. Berg) Miers is characteristic of oligotrophic Amazonian black-water floodplain forests (igapó), seasonally inundated up to 10 months per year, often forming monodominant stands. We investigated E. tenuifolia' growth and mortality patterns in undisturbed (Jaú National Park - JNP) and disturbed igapós (Uatumã Sustainable Development Reserve - USDR, downstream of the Balbina hydroelectric dam). We analysed age-diameter relationships, basal area increment (BAI) through 5-cm diameter classes, growth changes and growth ratios preceding death, BAI clustering, BAI ratio, and dated the individual year of death (14 C). Growth and mortality patterns were then related to climatic or anthropogenic disturbances. Results were similar for both populations for estimated maximum ages (JNP, 466 yr; USDR, 498 yr, except for one USDR tree with an estimated age of 820 yr) and slightly different for mean diameter increment (JNP: 2.04 mm; USDR: 2.28 mm). Living trees from JNP showed altered growth post-1975 and sparse tree mortality occurred at various times, possibly induced by extreme hydroclimatic events. In contrast with the JNP, abrupt growth changes and massive mortality occurred in the USDR after the dam construction began (1983). Even more than 30 yr after dam construction, flood-pulse alteration continues to affect both growth and mortality of E. tenuifolia. Besides its vulnerability to anthropogenic disturbances, this species is also susceptible to long-lasting dry and wet periods induced by climatic events, the combination of both processes may cause its local and regional extinction. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust.
format	Artigo
author	Resende, Angélica F.
author2	Piedade, Maria Teresa Fernandez Feitosa, Yuri Oliveira Andrade, Victor Hugo F. Trumbore, Susan Elizabeth Durgante, Flávia Machado Macedo, Maíra O. Schöngart, Jochen
author2Str	Piedade, Maria Teresa Fernandez Feitosa, Yuri Oliveira Andrade, Victor Hugo F. Trumbore, Susan Elizabeth Durgante, Flávia Machado Macedo, Maíra O. Schöngart, Jochen
title	Flood-pulse disturbances as a threat for long-living Amazonian trees
title_short	Flood-pulse disturbances as a threat for long-living Amazonian trees
title_full	Flood-pulse disturbances as a threat for long-living Amazonian trees
title_fullStr	Flood-pulse disturbances as a threat for long-living Amazonian trees
title_full_unstemmed	Flood-pulse disturbances as a threat for long-living Amazonian trees
title_sort	flood-pulse disturbances as a threat for long-living amazonian trees
publisher	The New phytologist
publishDate	2020
url	https://repositorio.inpa.gov.br/handle/1/23271
_version_	1787142638223228928
score	11.755432

Flood-pulse disturbances as a threat for long-living Amazonian trees

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