Correction: Climate change and bird extinctions in the Amazon

Moraes, Kauê Felippe de; Santos, Marcos Pérsio Dantas; Gonçalves, Gabriela Silva Ribeiro; Oliveira, Geovana Linhares de; Gomes, Letícia; Lima, Marcela Guimarães Moreira

doi:10.1371/journal.pone.0252260

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…The few estimates available report a minimum of 16% of tree species flora belonging to this ecological group in the Amazon region (Assis & Wittmann, 2011); however, by considering herbs, shrubs and small palms, the understory flowering species flora is expected to achieve over 20% of all species (see Costa & Magnusson, 2002). Unfortunately, there is little information about the Amazon estuarine forest, even for the tree flora, although this unique forest represents the core area of açaí production and intensification (Brondízio, 2008) and an ecologically unique component of an area of species endemism considering an immense number of taxa, from insects to primates (Moraes et al, 2020;Silva et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Açaí palm intensification reorganizes woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

Barros,

Jardim,

Soares

et al. 2023

Land Degrad Dev

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The exploitation of nontimber forest products has been proposed as a sustainable way to exploit tropical forests, but such an opportunity remains to be examined case‐by‐case. We examine the impact of the intensification of the açaí palm (Euterpe oleracea) management for fruit production via increments in palm clumps/stems density on the woody plant assemblages (adult and regenerating) in an estuarine forest landscape in the eastern Amazon region, Brazil. Across 30 forest stands açaí stem density correlated negatively with stem density and taxonomic diversity considering both adult and regenerating woody plant assemblages, but it posed a positive effect on beta diversity via species turnover. Soil fertility and forest stand accessibility played a complementary role. Moreover, açaí clump density affected the abundance of particular woody plant species, including a set of species declining before the 400‐açaí clump density threshold imposed by current regulation. Accordingly, açaí clump density influenced the taxonomic organization of woody plant assemblages at the landscape spatial level. Finally, it is worth mentioning a group of 105 species, which were recorded across the regenerating assemblages but not in the adult assemblages. Among them, a large number of small‐statured woody plant species typical from the forest understory (i.e., the shade‐tolerant assemblage), such as those from Miconia, Piper, Bactris, Anonna and Geonoma genera. As intensification is still spreading it can be considered a threat to the integrity of the Amazon estuarine forest and thus questions the ecological sustainability through which the current Amazonian “black gold” is now produced.

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Section: Discussionmentioning

confidence: 99%

Açaí palm intensification reorganizes woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

Barros,

Jardim,

Soares

et al. 2023

Land Degrad Dev

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The future of suitable habitats of an endangered Neotropical grassland bird: A path to extinction?

Meireles

Lopes

Brito

et al. 2023

Ecology and Evolution

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Global changes increasingly worry researchers and policymakers and may have irreversible impacts on Earth's biodiversity. Similar to other phytophysiognomies, natural grasslands suffer from the effects of land use changes and rising temperatures, threatening animal and plant communities. Birds, being very sensitive to these changes, are widely studied and fundamental to understand the dynamics of ecosystems in relation to climate and land use changes. The Campo Miner Geositta poeciloptera is a grassland bird endemic to the Brazilian Cerrado and threatened with extinction that has been widely studied in recent years. We analyze the decrease in its extent of occurrence (EOO) and the effects of climate and land use change to understand the environmental suitability of the species in current and future scenarios. We used 5 common algorithms to produce ecological niche models. For future predictions, we use two general circulation models for two different greenhouse gas emission scenarios with different climate policies, an optimistic (ssp245) and a pessimistic (ssp585), plus two land use models focusing on increasing farmlands and reducing native grasslands. The current EOO represents ~45% of that presented by the IUCN EOO. The models generated for the present were satisfactory (TSS = 0.77 and ROC = 0.90) and showed high environmental suitability in areas where the species is currently found and low suitability where it is already extinct. All future scenarios have reduced suitable areas for the species, and the models of a greater increase in temperature and increase in farmlands and a greater decrease in grasslands were the worse. Our results reinforce the need to care about biome awareness disparity and the importance of actively preserving grassy‐shrub areas. Apparently, the state of Minas Gerais will be the only stronghold of the species in the coming years; however, the lack of protected areas that guarantee its survival needs attention.

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Açaí palm intensification and the reorganization of woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

Barros

Jardim

Soares3

et al. 2023

Preprint

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The exploitation of non-timber forest products has been proposed as a sustainable way to exploit tropical forests, but such an opportunity remains to examined case-by-case. We examine the impact by the intensification of the açaí palm (Euterpe oleracea) management for fruit production via increments on palm clumps/stems density on the woody plant assemblages (adult and regenerating) in an estuarine forest landscape in the eastern Amazon region, Brazil. Across 30 forest stands açaí clumps density correlated negatively with stem density and taxonomic diversity considering both adult and regenerating woody plant assemblages, but it posed a positive effect on beta diversity via species turnover. Soil fertility and forest stand accessibility played a complementary role. Moreover, açaí clump density affected the abundance of particular woody plant species, including a set of species declining before the 400-açaí clump density threshold imposed by current regulation. Accordingly, açaí clump density influenced the taxonomic organization of woody plant assemblages at landscape spatial level. Finally, it is worth mention a group of 105 species, which were recorded across the regenerating assemblages but not in the adult assemblages. Among them, a large number of small-statured woody plant species typical from the forest understory (i.e., the shade-tolerant flora) such as those from Miconia, Piper, Bactris, Anonna and Geonoma genus among many. As intensification is still spreading it can be considered a threat to the integrity of the Amazon estuarine forest. It questions the ecological sustainability the current Amazonian “black gold” is produced.

show abstract

Correction: Climate change and bird extinctions in the Amazon

Cited by 4 publications

References 1 publication

Açaí palm intensification reorganizes woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

Açaí palm intensification reorganizes woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

The future of suitable habitats of an endangered Neotropical grassland bird: A path to extinction?

Açaí palm intensification and the reorganization of woody plant assemblages at multiple spatial scales in an Amazonian estuarine forest

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