@Article{VedovatoCABPABBBCFFMMMMOPPQSSSF:2023:AnFiEn,
author = "Vedovato, Laura B. and Carvalho, Lidiany C. S. and Arag{\~a}o,
Luiz Eduardo Oliveira e Cruz de and Bird, Michael and Phillips,
Oliver L. and Alvarez, Patr{\'{\i}}cia and Barlow, Jos and
Bartholomew, David C. and Berenguer, Erika and Castro, Wendeson
and Ferreira, Joice and Fran{\c{c}}a, Filipe M. and Malhi,
Yadvinder and Marimon, Beatriz and Marimon J{\'u}nior, Ben Hur
and Monteagudo, Abel and Oliveira, Edmar A. and Pereira, Luciana
O. and Pontes Lopes, Aline and Quesada, Carlos A. and Silva,
Camila V. J. and Silva Espejo, Javier E. r and Silveira, Marcos
and Feldpausch, Ted R.",
affiliation = "{University of Exeter} and {University of Exeter} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {James Cook
University} and {University of Leeds} and {Duke University} and
{Lancaster University} and {University of Exeter} and {Lancaster
University} and {Universidade Federal do Acre (UFAC)} and {Embrapa
Amaz{\^o}nia Oriental} and {University of Bristol} and
{University of Oxford} and {Universidade do Estado de Mato Grosso
(UEMAT)} and {Universidade do Estado de Mato Grosso (UEMAT)} and
{Universidad Nacional de San Antonio Abad del Cusco} and
{Universidade do Estado de Mato Grosso (UEMAT)} and {University of
Exeter} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and
{Instituto de Pesquisa Ambiental da Amaz{\^o}nia (IPAM)} and
{Universidad de La Serena} and {Universidade Federal do Acre
(UFAC)} and {University of Exeter}",
title = "Ancient fires enhance Amazon forest drought resistance",
journal = "Frontiers in Forests and Global Change",
year = "2023",
volume = "6",
pages = "e1024101",
keywords = "carbon sequestration, forest composition, historical fires, soil
fertility, soil pyrogenic carbon, water deficit, wood density.",
abstract = "Drought and fire reduce productivity and increase tree mortality
in tropical forests. Fires also produce pyrogenic carbon (PyC),
which persists in situ for centuries to millennia, and represents
a legacy of past fires, potentially improving soil fertility and
water holding capacity and selecting for the survival and
recruitment of certain tree life-history (or successional)
strategies. We investigated whether PyC is correlated with
physicochemical soil properties, wood density, aboveground carbon
(AGC) dynamics and forest resistance to severe drought. To achieve
our aim, we used an Amazon-wide, long-term plot network, in
forests without known recent fires, integrating site-specific
measures of forest dynamics, soil properties and a unique soil PyC
concentration database. We found that forests with higher
concentrations of soil PyC had both higher soil fertility and
lower wood density. Soil PyC was not associated with AGC dynamics
in non-drought years. However, during extreme drought events (10%
driest years), forests with higher concentrations of soil PyC
experienced lower reductions in AGC gains (woody growth and
recruitment), with this drought-immunizing effect increasing with
drought severity. Forests with a legacy of ancient fires are
therefore more likely to continue to grow and recruit under
increased drought severity. Forests with high soil PyC
concentrations (third quartile) had 3.8% greater AGC gains under
mean drought, but 33.7% greater under the most extreme drought
than forests with low soil PyC concentrations (first quartile),
offsetting losses of up to 0.68 Mg C ha1yr1 of AGC under extreme
drought events. This suggests that ancient fires have legacy
effects on current forest dynamics, by altering soil fertility and
favoring tree species capable of continued growth and recruitment
during droughts. Therefore, mature forest that experienced fires
centuries or millennia ago may have greater resistance to current
short-term droughts.",
doi = "10.3389/ffgc.2023.1024101",
url = "http://dx.doi.org/10.3389/ffgc.2023.1024101",
issn = "2624-893X",
language = "en",
targetfile = "ffgc-06-1024101.pdf",
urlaccessdate = "15 jun. 2024"
}