Eurídice N. Honorio Coronado

University of St Andrews

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Co-Authors

Timothy R. Baker

University of Leeds

114

Oliver L. Phillips

University of Leeds

109

Ted R. Feldpausch

University of Exeter

Rodolfo Vásquez

Missouri Botanical Garden

Hans ter Steege

Naturalis Biodiversity Center

Nigel C. A. Pitman

Field Museum of Natural History

Marcos Silveira

Universidade Federal do Acre

Beatriz Schwantes Marimon

Universidade do Estado de Mato Grosso

David Neill

Universidad Estatal Amazónica

Ben Hur Marimon

Universidade do Estado de Mato Grosso

Cooperative Institutions

John Wiley & Sons (United States)

291

Ecological Society of America

277

National Institute of Amazonian Research

230

Wyoming Game and Fish Department

219

University of Leeds

159

IFC Research (United Kingdom)

116

Centre National de la Recherche Scientifique

107

Université du Québec à Montréal

University of Oxford

University of Edinburgh

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Hyperdominance in Amazonian forest carbon cycling

Nature Communications (2015)

Sophie Fauset Michelle Johnson Manuel Gloor Timothy R. Baker Abel Monteagudo M.

Abstract While Amazonian forests are extraordinarily diverse, the abundance of trees is skewed strongly towards relatively few ‘hyperdominant’ species. In addition to their diversity, Amazonian trees are a key component of the global carbon cycle, assimilating and storing more carbon than any other ecosystem on Earth. Here we ask, using a unique data set of 530 forest plots, if the functions of storing and producing woody carbon are concentrated in a small number of tree species, whether the most abundant species also dominate carbon cycling, and whether dominant species are characterized by specific functional traits. We find that dominance of forest function is even more concentrated in a few species than is dominance of tree abundance, with only ≈1% of Amazon tree species responsible for 50% of carbon storage and productivity. Although those species that contribute most to biomass and productivity are often abundant, species maximum size is also influential, while the identity and ranking of dominant species varies by function and by region.

Dominance (genetics)

Rank abundance curve

Cycling

10.1038/ncomms7857

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Citations (278)

Compositional response of Amazon forests to climate change

Global Change Biology (2018)

Adriane Esquivel‐Muelbert Timothy R. Baker Kyle G. Dexter Simon L. Lewis Roel Brienen

Abstract Most of the planet's diversity is concentrated in the tropics, which includes many regions undergoing rapid climate change. Yet, while climate‐induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether the floristic and functional composition of intact lowland Amazonian forests have been changing by evaluating records from 106 long‐term inventory plots spanning 30 years. We analyse three traits that have been hypothesized to respond to different environmental drivers (increase in moisture stress and atmospheric CO 2 concentrations): maximum tree size, biogeographic water‐deficit affiliation and wood density. Tree communities have become increasingly dominated by large‐statured taxa, but to date there has been no detectable change in mean wood density or water deficit affiliation at the community level, despite most forest plots having experienced an intensification of the dry season. However, among newly recruited trees, dry‐affiliated genera have become more abundant, while the mortality of wet‐affiliated genera has increased in those plots where the dry season has intensified most. Thus, a slow shift to a more dry‐affiliated Amazonia is underway, with changes in compositional dynamics (recruits and mortality) consistent with climate‐change drivers, but yet to significantly impact whole‐community composition. The Amazon observational record suggests that the increase in atmospheric CO 2 is driving a shift within tree communities to large‐statured species and that climate changes to date will impact forest composition, but long generation times of tropical trees mean that biodiversity change is lagging behind climate change.

Dry season

Tropical climate

10.1111/gcb.14413

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Citations (403)

Trait data from: "Evolutionary heritage influences Amazon tree ecology"

Fernanda Coelho de Souza Kyle G. Dexter Oliver L. Phillips Roel J. W. Brienen Jérôme Chave

Lineages tend to retain ecological characteristics of their ancestors through time. However, for some traits, selection during evolutionary history may have also played a role in determining trait values. To address the relative importance of these processes requires large-scale quantification of traits and evolutionary relationships amongst species. The Amazonian tree flora comprises a high diversity of angiosperm lineages and species with widely differing life history characteristics, providing an excellent system to investigate the combined influences of evolutionary heritage and selection in determining trait variation. We used trait data related to the major axes of life history variation among tropical trees (e.g. growth and mortality rates) from 577 inventory plots in closed-canopy forest, mapped onto a phylogenetic hypothesis spanning >300 genera including all major angiosperm clades to test for evolutionary constraints on traits. We found significant phylogenetic signal for all traits, consistent with evolutionarily related genera having more similar characteristics than expected by chance. Although there is also evidence for repeated evolution of similar, pioneer and shade tolerant life history strategies within independent lineages, the existence of significant phylogenetic signal allowsLineages tend to retain ecological characteristics of their ancestors through time. However, for some traits, selection during evolutionary history may have also played a role in determining trait values. To address the relative importance of these processes requires large-scale quantification of traits and evolutionary relationships amongst species. The Amazonian tree flora comprises a high diversity of angiosperm lineages and species with widely differing life history characteristics, providing an excellent system to investigate the combined influences of evolutionary heritage and selection in determining trait variation. We used trait data related to the major axes of life history variation among tropical trees (e.g. growth and mortality rates) from 577 inventory plots in closed-canopy forest, mapped onto a phylogenetic hypothesis spanning >300 genera including all major angiosperm clades to test for evolutionary constraints on traits. We found significant phylogenetic signal for all traits, consistent with evolutionarily related genera having more similar characteristics than expected by chance. Although there is also evidence for repeated evolution of similar, pioneer and shade tolerant life history strategies within independent lineages, the existence of significant phylogenetic signal allows clearer predictions of the links between evolutionary diversity, ecosystem function and the response of tropical forests to global change. clearer predictions of the links between evolutionary diversity, ecosystem function and the response of tropical forests to global change.

Trait

Phylogenetic comparative methods

Phylogenetic diversity

Life History Theory

10.5521/forestplots.net/2016_4

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Citations (1)

Threats to intact tropical peatlands and opportunities for their conservation

Conservation Biology (2017)

Katherine H. Roucoux Ian T. Lawson Timothy R. Baker Dennis Del Castillo Torres Freddie C. Draper

Large, intact areas of tropical peatland are highly threatened at a global scale by the expansion of commercial agriculture and other forms of economic development. Conserving peatlands on a landscape scale, with their hydrology intact, is of international conservation importance to preserve their distinctive biodiversity and ecosystem services and maintain their resilience to future environmental change. We explored threats to and opportunities for conserving remaining intact tropical peatlands; thus, we excluded peatlands of Indonesia and Malaysia, where extensive deforestation, drainage, and conversion to plantations means conservation in this region can protect only small fragments of the original ecosystem. We focused on a case study, the Pastaza-Marañón Foreland Basin (PMFB) in Peru, which is among the largest known intact tropical peatland landscapes in the world and is representative of peatland vulnerability. Maintenance of the hydrological conditions critical for carbon storage and ecosystem function of peatlands is, in the PMFB, primarily threatened by expansion of commercial agriculture linked to new transport infrastructure that is facilitating access to remote areas. There remain opportunities in the PMFB and elsewhere to develop alternative, more sustainable land-use practices. Although some of the peatlands in the PMFB fall within existing legally protected areas, this protection does not include the most carbon-dense (domed pole forest) areas. New carbon-based conservation instruments (e.g., REDD+, Green Climate Fund), developing markets for sustainable peatland products, transferring land title to local communities, and expanding protected areas offer pathways to increased protection for intact tropical peatlands in Amazonia and elsewhere, such as those in New Guinea and Central Africa which remain, for the moment, broadly beyond the frontier of commercial development.

10.1111/cobi.12925

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Citations (96)

The distribution and amount of carbon in the largest peatland complex in Amazonia

Environmental Research Letters (2014)

Freddie C. Draper Katherine H. Roucoux Ian T. Lawson Edward T. A. Mitchard Eurídice N. Honorio Coronado

Peatlands in Amazonian Peru are known to store large quantities of carbon, but there is high uncertainty in the spatial extent and total carbon stocks of these ecosystems. Here, we use a multi-sensor (Landsat, ALOS PALSAR and SRTM) remote sensing approach, together with field data including 24 forest census plots and 218 peat thickness measurements, to map the distribution of peatland vegetation types and calculate the combined above- and below-ground carbon stock of peatland ecosystems in the Pastaza-Marañon foreland basin in Peru. We find that peatlands cover 35 600 ± 2133 km2 and contain 3.14 (0.44–8.15) Pg C. Variation in peat thickness and bulk density are the most important sources of uncertainty in these values. One particular ecosystem type, peatland pole forest, is found to be the most carbon-dense ecosystem yet identified in Amazonia (1391 ± 710 Mg C ha−1). The novel approach of combining optical and radar remote sensing with above- and below-ground carbon inventories is recommended for developing regional carbon estimates for tropical peatlands globally. Finally, we suggest that Amazonian peatlands should be a priority for research and conservation before the developing regional infrastructure causes an acceleration in the exploitation and degradation of these ecosystems.

10.1088/1748-9326/9/12/124017

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Citations (191)

Development of nuclear and plastid SNP and INDEL markers for population genetic studies and timber traceability of Carapa species

Conservation Genetics Resources (2019)

Niklas Tysklind Céline Blanc-Jolivet Malte Mäder Barbara R. V. Meyer-Sand Kathelyn Paredes-Villanueva

Indel

SNP

SNP genotyping

10.1007/s12686-019-01090-2

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Citations (8)

Carbon recovery dynamics following disturbance by selective logging in Amazonian forests

eLife (2016)

Camille Piponiot Plínio Sist Lucas Mazzei Marielos Peña‐Claros Francis E. Putz

When 2 Mha of Amazonian forests are disturbed by selective logging each year, more than 90 Tg of carbon (C) is emitted to the atmosphere. Emissions are then counterbalanced by forest regrowth. With an original modelling approach, calibrated on a network of 133 permanent forest plots (175 ha total) across Amazonia, we link regional differences in climate, soil and initial biomass with survivors’ and recruits’ C fluxes to provide Amazon-wide predictions of post-logging C recovery. We show that net aboveground C recovery over 10 years is higher in the Guiana Shield and in the west (21 ±3 Mg C ha-1) than in the south (12 ±3 Mg C ha-1) where environmental stress is high (low rainfall, high seasonality). We highlight the key role of survivors in the forest regrowth and elaborate a comprehensive map of post-disturbance C recovery potential in Amazonia.

10.7554/elife.21394

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Citations (64)

Taking the pulse of Earth's tropical forests using networks of highly distributed plots

Biological Conservation (2021)

ForestPlots.net Cecilia Blundo Julieta Carilla Ricardo Grau Agustina Malizia

Grassroots

Tropical climate

Tropical forest

Earth system science

Citizen Science

10.1016/j.biocon.2020.108849

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Citations (128)

Local hydrological conditions influence tree diversity and composition across the Amazon basin

Ecography (2022)

Manuel J. Marca Zevallos Gabriel M. Moulatlet Thaiane R. Sousa Juliana Schietti Luiz de Souza Coêlho

Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well‐drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1‐ha non‐flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community‐weighted wood density mean (CWM‐wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well‐drained soils. CWM‐wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central‐Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.

Ecohydrology

10.1111/ecog.06125

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Citations (20)

Amazon tree dominance across forest strata

Nature Ecology & Evolution (2021)

Freddie C. Draper Flávia R. C. Costa Gabriel Arellano Oliver L. Phillips Álvaro Duque

Understory

Dominance (genetics)

Biodiversity hotspot

10.1038/s41559-021-01418-y

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Citations (40)