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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term Amazonia Remove constraint Subject term: Amazonia
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1. A 30-year study of the effects of selective logging on a stem-less palm (Astrocaryum sociale) in a central-Amazon forest

Author:
Emílio Manabu Higashikawa; Maria Marcela Ortiz Brasil; William Ernest Magnusson
Source:
Forest ecology and management 2019 v.432 pp. 607-611
ISSN:
0378-1127
Subject:
Astrocaryum; logging; long term effects; dead wood; cutting; understory; leaves; biodiversity; stand basal area; adults; forests
Abstract:
... We studied the long-term effects of different selective-logging intensities on the stem-less palm Astrocaryum sociale in a central Amazonian forest 90 km north of Manaus. The experiment consisted of three blocks of 24 ha, each divided into six 4 ha plots in which the treatments were allocated randomly. Each block had a control plot. Within each block, commercial timber was logged with intensities ...
DOI:
10.1016/j.foreco.2018.10.003

2. A 7000‐year history of changing plant trait composition in an Amazonian landscape; the role of humans and climate

Author:
Masha T. van der Sande; William Gosling; Alexander Correa‐Metrio; Jamir Prado‐Junior; Lourens Poorter; Rafael S. Oliveira; Lucas Mazzei; Mark B. Bush
Source:
Ecology letters 2019 v.22 no.6 pp. 925-935
ISSN:
1461-023X
Subject:
climate; climate change; environmental factors; forest dynamics; fossils; humans; lakes; landscapes; leaves; pollen; prediction; seeds; tropical forests; Amazonia; Peru
Abstract:
... Tropical forests are shifting in species and trait composition, but the main underlying causes remain unclear because of the short temporal scales of most studies. Here, we develop a novel approach by linking functional trait data with 7000 years of forest dynamics from a fossil pollen record of Lake Sauce in the Peruvian Amazon. We evaluate how climate and human disturbances affect community trai ...
DOI:
10.1111/ele.13251
PubMed:
30883016
PubMed Central:
PMC6850629

3. Accelerating Capoeira Regeneration on Degraded Pastures in the Northeastern Amazon by the Use of Pigs or Cattle

Author:
Stefan Hohnwald; Osvaldo Ryohei Kato; Helge Walentowski
Source:
Sustainability 2019 v.11 no.6 pp. -
ISSN:
2071-1050
Subject:
Chiroptera; birds; canopy; fallow; forest restoration; forest succession; grasses; humid tropics; on-farm research; oxen; pastures; seeds; shrubs; soil; swine; trampling damage; trees; vegetation; weeds; Amazonia; Latin America
Abstract:
... In the humid tropics of Latin America, considerable proportions of agro-scapes are covered with degraded pastures that were taken over by dense weedy shrub canopies hampering further forest succession. While tree seeds are still constantly dispersed by bats and birds, these often do not reach the soil but got stuck in the dense shrubby vegetation. While manual up-rooting of weedy shrubs or tree re ...
DOI:
10.3390/su11061729

4. Accelerating the knowledge of Peruvian Chalcididae (Insecta, Hymenoptera, Chalcidoidea) with integrative taxonomy

Author:
Bruno Cancian de Araujo; Marcelo Teixeira Tavares; Thales Renan Aguiar Brotto; Juliana Martins Silva-Freitas; Max Estefani Vagner Santos; Pâmella Machado Saguiah; Stefan Schmidt
Source:
Biodiversity data journal 2019 v.7 pp. e35907
ISSN:
1314-2828
Subject:
Chalcididae; DNA; DNA barcoding; Neotropics; biodiversity; canopy; cluster analysis; data collection; databases; fauna; insects; inventories; new species; Amazonia; Brazil; Germany; Peru
Abstract:
... We present the first regional inventory of the fauna of Chalcididae in the Peruvian Amazon, with a nearly 6-fold increase in the number of species recorded for the country. A total of 418 specimens of Chalcididae were collected between 2000 and 2017 at the Panguana Reserve, Peruvian Amazon, 400 of which were obtained using Malaise traps and the remaining 18 specimens by canopy fogging. The morphol ...
DOI:
10.3897/BDJ.7.e35907

5. Acid extraction and physicochemical characterization of pectin from cubiu (Solanum sessiliflorum D.) fruit peel

Author:
Cristiane Colodel; Carmen Lúcia de Oliveira Petkowicz
Source:
Food hydrocolloids 2019 v.86 pp. 193-200
ISSN:
0268-005X
Subject:
Solanum sessiliflorum; chromatography; citric acid; esterification; fruit peels; fruits; gel strength; gels; hydrocolloids; nitric acid; pH; pectins; polymers; spectroscopy; sucrose; total soluble solids; uronic acids; Amazonia
Abstract:
... Cubiu (Solanum sessiliflorum Dunal) is a fruit from the Amazon region. Pectins were extracted from cubiu fruit peels using boling mineral acid (HNO3) or organic acid (citric acid) at pH 2 for 1h. The highest uronic acid content was obtained using HNO3. Extractions were then carried out with HNO3 at pH 1.0, 1.5 or 2.0 for 2 or 4 h. Among the pectins with the highest yields, the one extracted using ...
DOI:
10.1016/j.foodhyd.2018.06.013

6. Agricultural Productivity and Forest Conservation: Evidence from the Brazilian Amazon

Author:
Nicolas Koch; Erasmus K.H.J. zu Ermgassen; Johanna Wehkamp; Francisco J.B. Oliveira Filho; Gregor Schwerhoff
Source:
American journal of agricultural economics 2019 v.101 no.3 pp. 919-940
ISSN:
0002-9092
Subject:
agricultural productivity; beef; cattle; cattle production; crop production; data collection; deforestation; economic investment; farmers; farming systems; forest conservation; markets; models; public policy; Amazonia; Brazil
Abstract:
... A mix of public policy and market interventions in the mid‐2000s led to historic reductions in deforestation in the Brazilian Amazon. The collateral impact of these forest conservation policies on agricultural production is still poorly understood, though evidence is sorely needed given the economic importance of agriculture in Brazil and many other forest‐rich countries. We construct a ten‐year p ...
DOI:
10.1093/ajae/aay110

7. Agricultural technology adoption among migrant settlers and indigenous populations of the Northern Ecuadorian Amazon: are differences narrowing?

Author:
Samuel Sellers; Richard Bilsborrow
Source:
Journal of land use science 2019 v.14 no.4-6 pp. 347-361
ISSN:
1747-4248
Subject:
data analysis; herbicides; households; innovation adoption; land use; livelihood; nationalities and ethnic groups; statistical models; surveys; Amazonia; Ecuador
Abstract:
... We consider trends in the use of modern agricultural inputs of migrant settlers and indigenous populations in the Northern Ecuadorian Amazon and the demographic, socioeconomic, and land use-related factors affecting input use. It is widely believed that the different livelihood strategies, and therefore different relationships to the land, of indigenous populations and migrant settlers result in d ...
DOI:
10.1080/1747423X.2020.1719225

8. Agrobiodiversity and Public Food Procurement Programs in Brazil: Influence of Local Stakeholders in Configuring Green Mediated Markets

Author:
Antonio Gabriel L. Resque; Emilie Coudel; Marie-Gabrielle Piketty; Nathalie Cialdella; Tatiana Sá; Marc Piraux; William Assis; Christophe Le Page
Source:
Sustainability 2019 v.11 no.5 pp. -
ISSN:
2071-1050
Subject:
agroecosystems; biodiversity; cropping systems; crops; ecosystem services; markets; perennials; production technology; school meals; stakeholders; vegetables; Amazonia; Brazil
Abstract:
... The last few years have seen the emergence of different initiatives designed to promote the biodiversification of agroecosystems as a counterpoint to the global expansion of homogenized industrial agriculture. In Brazil, two food procurement programs demonstrate the potential to promote discussions related to this agroecological transition: the National School Meal Program (Programa Nacional de Al ...
DOI:
10.3390/su11051425

9. Agroforestry systems improve soil physical quality in northwestern Colombian Amazon

Author:
Maurício Roberto Cherubin; Juan Pablo Chavarro-Bermeo; Adriana Marcela Silva-Olaya
Source:
Agroforestry systems 2019 v.93 no.5 pp. 1741-1753
ISSN:
0167-4366
Subject:
agroforestry; bioactive properties; bulk density; ecosystem services; fauna; forests; land degradation; land productivity; land use change; monitoring; pastures; production technology; resistance to penetration; roots; soil aggregates; soil degradation; soil organic carbon; soil quality; soil restoration; soil structure; soil water; Amazonia; Colombia
Abstract:
... Land use change is a global threat to soil quality and related ecosystem services. In Colombian Amazon, forest-cleared lands are predominantly covered by low-input and degraded pastures; but gradually, agroforestry systems (AFS) have been introduced as a sustainable alternative for soil reclamation and increasing land productivity. Although soil physical quality changes can be monitored by multipl ...
DOI:
10.1007/s10457-018-0282-y

10. Alternative functional trajectories along succession after different land uses in central Amazonia

Author:
Jose G. Fernandes Neto; Flavia R. C. Costa; G. Bruce Williamson; Rita C. G. Mesquita
Source:
Journal of applied ecology 2019 v.56 no.11 pp. 2472-2481
ISSN:
0021-8901
Subject:
anthropogenic activities; biomass; clearcutting; dominant species; functional properties; habitat fragmentation; land use; leaf area; leaves; pastures; secondary forests; seed weight; tropical forests; wood density; Amazonia
Abstract:
... The recovery capacity and the successional pathways of tropical forests after anthropogenic disturbance vary considerably and may depend on prior land‐use type and intensity. It is still unclear if forests subjected to high intensity impact, such as periodically burned pastures, are capable of restoring their original functional properties. This study analysed the functional trait dynamics of the ...
DOI:
10.1111/1365-2664.13484

11. Amazon Fund 10 Years Later: Lessons from the World’s Largest REDD+ Program

Author:
Juliano Correa; Richard van der Hoff; Raoni Rajão
Source:
Forests 2019 v.10 no.3 pp. -
ISSN:
1999-4907
Subject:
data collection; deforestation; emissions; forest conservation; forests; funding; long term effects; models; nongovernmental organizations; research institutions; stakeholders; Amazonia; Brazil
Abstract:
... Results-Based Funding (RBF) for Reducing Emissions from Deforestation and Forest Degradation (REDD+) has become an important instrument for channeling financial resources to forest conservation activities. At the same time, much literature on conservation funding is ambiguous about the effectiveness of existing RBF schemes. Many effectiveness evaluations follow a simplified version of the principa ...
DOI:
10.3390/f10030272

12. Amazon Rubber, A Potential Yet to be Rediscovered

Author:
João Bosco R. Peres Jr.; Floriano Pastore Jr.
Source:
Journal of polymers and the environment 2019 v.27 no.3 pp. 652-658
ISSN:
1566-2543
Subject:
Hevea brasiliensis; clones; ecosystems; gels; genetic background; indigenous species; latex; lipids; mechanical properties; molecular weight; pH; particle size; plantations; polymers; rubber; seeds; total solids; trees; viscosity; Amazonia; Brazil
Abstract:
... Natural rubber still has socioeconomic, environmental and technical importance, despite the production of several synthetic similar polymers in the last 70 years. The Amazon Rainforest, the genetic base of Hevea brasiliensis, harbors a great diversity of ecosystems that can result in differentiated latex and elastomer molecules, from trees of the same species or other species and varieties of lati ...
DOI:
10.1007/s10924-019-01381-7

13. Amazon fish bacterial communities show structural convergence along widespread hydrochemical gradients

Author:
François‐Étienne Sylvain; Aleicia Holland; Émie Audet‐Gilbert; Adalberto Luis Val; Nicolas Derome
Source:
Molecular ecology 2019 v.28 no.15 pp. 3612-3626
ISSN:
0962-1083
Subject:
DNA barcoding; Mesonauta; Serrasalmus rhombeus; adaptive radiation; bacterial communities; calcium; chlorides; color; community structure; digestive system; dissolved organic carbon; dissolved oxygen; fish communities; freshwater fish; hosts; hydrochemistry; magnesium; microbiome; microorganisms; mucus; pH; phylogeny; potassium; sodium; water hardness; Amazonia
Abstract:
... The world's richest freshwater fish community thrives in gradients of contrasting environments in Amazonia, ranging from ion‐poor acidic black waters, to ion‐rich circumneutral white waters. These hydrochemical gradients structure Amazonian fish assemblages via ecological speciation events. Fish bacterial communities contain an important genetic heritage essential for their hosts' survival and are ...
DOI:
10.1111/mec.15184

14. Amazonian deforestation and soil biodiversity

Author:
André L.C. Franco; Bruno W. Sobral; Artur L.C. Silva; Diana H. Wall
Source:
Conservation biology 2019 v.33 no.3 pp. 590-600
ISSN:
0888-8892
Subject:
Nematoda; Protozoa; acid soils; arable soils; atmospheric precipitation; biodiversity; biodiversity conservation; biomass; cropping systems; data collection; deforestation; dry season; ecosystem services; ecosystems; issues and policy; land use change; logging; meta-analysis; microbial communities; microorganisms; pH; pastures; primary forests; public lands; soil ecology; soil fauna; wildfires; Amazonia
Abstract:
... Clearance and perturbation of Amazonian forests are one of the greatest threats to tropical biodiversity conservation of our times. A better understanding of how soil communities respond to Amazonian deforestation is crucially needed to inform policy interventions that effectively protect biodiversity and the essential ecosystem services it provides. We assessed the impact of deforestation and eco ...
DOI:
10.1111/cobi.13234

15. Amazonian farmers' response to fire policies and climate change

Author:
Federico Cammelli; Arild Angelsen
Source:
Ecological economics 2019 v.165 pp. 106359
ISSN:
0921-8009
Subject:
biodiversity; carbon; climate change; deforestation; drought; economic costs; ecosystem services; emissions; farmers; farmers' attitudes; forest fires; forests; issues and policy; risk; Amazonia; Brazil
Abstract:
... Fires are a major threat to the conservation of the Amazon forest. Despite a large decline in deforestation in the Brazilian Amazon between 2004 and 2012, frequency and extent of forest fires have been increasing over the last two decades. Fires cause huge carbon emissions, biodiversity losses and local economic costs. Fires are anthropogenic and mostly due to the accidental spread of agricultural ...
DOI:
10.1016/j.ecolecon.2019.106359

16. Amblyomma ticks (Acari: Ixodidae) parasitizing Rhinella major in the eastern Amazon

Author:
Tássio Alves Coêlho; Darlison Chagas De Souza; Ricardo Alexandre Kawashita-Ribeiro
Source:
International journal of acarology 2019 v.45 no.6-7 pp. 416-419
ISSN:
1945-3892
Subject:
Amblyomma; Rhinella; amphibians; hydroelectric power; larvae; nymphs; parasitism; power plants; ticks; Amazonia; Brazil
Abstract:
... Currently, there are approximately 896 species of ticks worldwide. Considering the paucity of information on amphibian parasitism by ticks in the state of Pará, in the Brazilian Amazon, the present study aimed to collect, identify, and report tick species found on Rhinella major. Specimens of Rhinella major (N = 52) were collected by active search during the night in the area influenced by the Cur ...
DOI:
10.1080/01647954.2019.1668057

17. Analysis of cultivation of remaining forest fragments in the Moju River Basin, Legal Amazon, Pará

Author:
Thais Gleice Martins Braga; João Ubiratan Moreira dos Santos; Maria de Nazaré Martins Maciel; Paula Fernanda Pinheiro Ribeiro Paiva; Orleno Marques da Silva Jr.; Natalia Seabra dos Santos; Paulo Eduardo Silva Bezerra
Source:
Biodiversity and conservation 2019 v.28 no.14 pp. 3713-3732
ISSN:
0960-3115
Subject:
Elaeis guineensis; anthropogenic activities; basins; biodiversity; biodiversity conservation; ecosystems; environmental impact; habitat fragmentation; land use; landscapes; palm oils; planning; rivers; vegetation; watersheds; Amazonia; Brazil
Abstract:
... It is known that Brazilian Amazon has been the target of changes in land use and cover caused by oil palm crop. Among other economically attractive species, they cause several impacts on the environment. One way to characterize environmental changes that have an influence on biodiversity conservation is the analysis of landscape metrics. The objective of this work was to characterize and to analyz ...
DOI:
10.1007/s10531-019-01846-0

18. Ant assemblages of Brazil nut trees Bertholletia excelsa in forest and pasture habitats in the Southwestern Brazilian Amazon

Author:
Amanda Batista da Silva de Oliveira; Fernando Augusto Schmidt
Source:
Biodiversity and conservation 2019 v.28 no.2 pp. 329-344
ISSN:
0960-3115
Subject:
Bertholletia excelsa; Brazil nuts; fauna; forest trees; forests; habitats; landscapes; pastures; soil; species diversity; tree crown; Amazonia; Brazil
Abstract:
... In the Southwestern Brazilian Amazon, the Brazil nut tree Bertholletia excelsa is the most conspicuous remnant element of original forest ecosystems in human-modified landscapes. They often exist in pastures that have very different environmental characteristics than forests. In our study, we surveyed the ant fauna of Brazil nut trees in forest and pasture habitats in the Southwestern Brazilian Am ...
DOI:
10.1007/s10531-018-1657-0

19. Aparatermes thornatus (Isoptera: Termitidae: Apicotermitinae), a New Species of Soldierless Termite from Northern Amazonia

Author:
O. P. Pinzón Florian; Rudolf H. Scheffrahn; Tiago F. Carrijo
Source:
Florida entomologist 2019 v.102 no.1 pp. 141-146
ISSN:
1938-5102
Subject:
Neotropics; Termitidae; color; education; head; new species; Amazonia; Colombia; Florida
Abstract:
... The worker of Aparatermes thornatus is described as the fourth species of a widespread Neotropical termite genus, Aparatermes, from the worker caste. This species occurs in northern Amazonia. The enteric valve armature of A. thornatus and the unique coloration of its worker's head capsule distinguish it from its 3 congeners. Molecular data recovered the proposed new species as a sister to Aparater ...
DOI:
10.1653/024.102.0123

20. Aquatic and Palustrine Angiosperms of Viruá National Park, Brazilian Amazon—Nymphaeales, Alismatales, Dioscoreales, and Arecales

Author:
Tiago D. M. Barbosa; Suzana M. Costa; Maria Do Carmo E. Do Amaral
Source:
Harvard papers in botany 2019 v.24 no.2 pp. 103-117
ISSN:
1043-4534
Subject:
Alismatales; Arecales; Dioscoreales; Nymphaeales; ecology; flora; geographical distribution; national parks; rain forests; savannas; taxonomic keys; Amazonia; Brazil
Abstract:
... The Viruá National Park (VNP) with its different plant formations (rainforest, white-sand savannas —“campinaranas,” and “buritizais”) is located in a region still lacking in botanical studies (Guiana Shield and Brazilian Amazon). Aiming to improve the knowledge of the region's flora, collections were conducted in VNP from 2010 to 2015. The present work provides a taxonomic treatment of the aquatic ...
DOI:
10.3100/hpib.v24iss2.2019.n4

21. Arboreal ant abundance tracks primary productivity in an Amazonian whitewater river system

Author:
Elizabeth G. Pringle; Talitha Ferreira dos Santos; Marcelle S. Gonçalves; Joseph E. Hawes; Carlos A. Peres; Fabricio B. Baccaro
Source:
Ecosphere 2019 v.10 no.10 pp. e02902
ISSN:
2150-8925
Subject:
Formicidae; arthropods; basins; biomass; canopy; foraging; forest types; herbivores; plant communities; plant-based foods; primary productivity; rivers; stems; stoichiometry; trees; tropics; Amazonia; Brazil
Abstract:
... Little is known about consumer productivity in the tropics despite the key feedbacks that animals impose on primary productivity. In the Amazon basin, seasonally flooded and unflooded forests exist side by side, and ants (Formicidae) dominate animal biomass. Although flooding has a direct negative effect on soil‐dwelling ants, it is less clear whether flooding has indirect effects on arboreal ants ...
DOI:
10.1002/ecs2.2902

22. Are data-mining techniques useful for selecting ecological indicators in biodiverse regions? Bridges between Market Basket Analysis and Indicator Value Analysis from a case study in the Neotropics

Author:
Pedro Leote; Reinaldo Lucas Cajaiba; João Alexandre Cabral; Antônio Domingos Brescovit; Mário Santos
Source:
Ecological indicators 2019 pp. -
ISSN:
1470-160X
Subject:
Neotropics; case studies; data collection; databases; ecosystems; markets; soil; species richness; Amazonia
Abstract:
... Ecological monitoring research relies heavily on signals to detect ecosystem changes, making the selection of indicators a crucial methodological requirement. Over the years, individual species and species assemblages have been widely used, thereby, giving rise to reference methods that support the detection of ecological indicators. One such method, the Indicator Value Analysis (IndVal), has been ...
DOI:
10.1016/j.ecolind.2019.105833

23. Are extinction debts reflected in temporal changes of Life history trait profiles? A fifteen-year reappraisal of bryophyte metacommunities in a fragmented landscape

Author:
Adriel M. Sierra; José J. Toledo; Henrique E. Nascimento; Marta R. Pereira; Charles E. Zartman
Source:
Biological conservation 2019 pp. -
ISSN:
0006-3207
Subject:
Bryophyta; anthropogenic activities; community structure; embryophytes; extinction; habitat fragmentation; interspecific variation; issues and policy; life history; natural resources conservation; phyllosphere; reproductive performance; species richness; temporal variation; tropical forests; Amazonia
Abstract:
... Forest fragmentation impacts community structure at both local and regional scales over time. Understanding the resilience of tropical forests to anthropogenic impacts and the period for communities to recover are critical steps for conservation policy implementation. We took advantage of a dynamic group of land plants to study temporal changes in their community structure over a period of 15 year ...
DOI:
10.1016/j.biocon.2019.108218

24. Aristolochia lorenae, a New Cauliflorous Aristolochia (Aristolochiaceae) from the Brazilian Amazonian Forest

Author:
Joelcio Freitas; Favio González; Anderson Alves-Araújo
Source:
Systematic botany 2019 v.44 no.1 pp. 101-106
ISSN:
0363-6445
Subject:
Aristolochia; biogeography; flowers; forests; internodes; new species; photographs; plant taxonomy; racemes; taxon descriptions; Amazonia; Brazil
Abstract:
... We describe and illustrate Aristolochia lorenae , a new species found in the state of Pará, Brazil. The new species is assigned to subseries Anthocaulicae F. González, which is characterized by the presence of extremely short cauliflorous and/or ramiflorous racemes that have shortened internodes and flowers subtended by a small bract. We provide a taxonomic description complemented with illustrati ...
DOI:
10.1600/036364419X697949

25. Aspidosperma huberianum (Apocynaceae), a New Species from the Brazilian Amazon

Author:
Andreza Stephanie de Souza Pereira; Ana Carolina Devides Castello; Edilson Freitas da Silva; José Tasso Felix Guimarães; André Olmos Simões; Ingrid Koch
Source:
Systematic botany 2019 v.44 no.2 pp. 363-370
ISSN:
0363-6445
Subject:
Aspidosperma; calyx; conservation status; corolla; fruits; habitats; leaves; new species; phenology; photographs; plant ovary; plant taxonomy; pollen; taxon descriptions; Amazonia; Brazil
Abstract:
... We describe Aspidosperma huberianum, a new species from the Brazilian Amazon. The new taxon is morphologically similar to A. darienense, but can be distinguished readily by characters of the leaf (including venation), flower (including calyx lobe number and indument of the corolla and ovary), pollen, fruit, and seed. We provide a taxonomic description, pollen characterization, illustration, photog ...
DOI:
10.1600/036364419X15562052252243

26. Assessing ecosystem service provision in a tropical region with high forest cover: Spatial overlap and the impact of land use change in Amapá, Brazil

Author:
Sérgio G. Milheiras; Georgina M. Mace
Source:
Ecological indicators 2019 v.99 pp. 12-18
ISSN:
1470-160X
Subject:
agricultural land; biodiversity; ecosystem services; edge effects; environmental indicators; land use change; land use planning; tropical forests; tropics; Amazonia; Brazil
Abstract:
... Ecosystem service (ES) assessments have flourished globally in recent years and are now frequently used by policymakers and environmental managers. However, data scarce regions continue to be less well studied, limiting the comprehensiveness of the approach and its potential benefits. Here we aim to assess multiple ES and their spatial relationships in a region with high tropical forest cover, the ...
DOI:
10.1016/j.ecolind.2018.12.013

27. Assessing land use/cover dynamics and exploring drivers in the Amazon's arc of deforestation through a hierarchical, multi-scale and multi-temporal classification approach

Author:
Andrea S. Garcia; Vívian M. de F. N. Vilela; Rodnei Rizzo; Paul West; James S. Gerber; Peder M. Engstrom; Maria Victoria R. Ballester
Source:
Remote sensing applications 2019 v.15 pp. 100233
ISSN:
2352-9385
Subject:
Landsat; basins; cerrado; deforestation; ecosystems; ecotones; indigenous species; intensive farming; land cover; land use and land cover maps; land use change; landscapes; moderate resolution imaging spectroradiometer; remote sensing; watersheds; Amazonia; Brazil
Abstract:
... Land use and land cover (LULC) are intrinsically tied to ecological and social dynamics. Still, classifying LULC in ecotones, where landscapes are commonly heterogeneous and have a wide range of physiognomies, remains a challenge. Here we present a three-level hierarchical classification approach, using both Landsat and MODIS images, and both pixels and objects as units of information. We applied ...
DOI:
10.1016/j.rsase.2019.05.002

28. Assessing the regional context of migration in the Brazilian Amazon through spatial regression modeling

Author:
Douglas Sathler; Susana Adamo; Everton E.C. Lima; Diego Rodrigues Macedo; Alex de Sherbinin; Paola Kim-Blanco
Source:
Applied geography 2019 v.109 pp. 102042
ISSN:
0143-6228
Subject:
autocorrelation; economic development; issues and policy; rain forests; regression analysis; spatial variation; statistical models; Amazonia; Brazil
Abstract:
... The Brazilian Amazon contains the most active rainforest frontier in the world, and its socioeconomic, demographic and spatial dynamism has been a topic of interest for academics and policy makers for decades. In this paper, we use spatial statistical modeling to examine the context of migration in the Brazilian Amazon by investigating its socioeconomic, demographic, spatial and environmental hete ...
DOI:
10.1016/j.apgeog.2019.102042

29. Astrocaryum aculeatum fruit improves inflammation and redox balance in phytohemagglutinin-stimulated macrophages

Author:
Fernanda L. Cabral; Viviane M. Bernardes; Daniela F. Passos; Juliana S. de Oliveira; Pedro H. Doleski; Karine L. Silveira; Mauren C. Hovart; João M. Bremm; Fernanda Barbisan; Verônica F. Azzolin; Cibele F. Teixeira; Cinthia M. de Andrade; Ivana B.M. da Cruz; Euler E. Ribeiro; Daniela B.R. Leal
Source:
Journal of ethnopharmacology 2019 pp. -
ISSN:
0378-8741
Subject:
Astrocaryum aculeatum; adjuvants; antioxidant activity; cell proliferation; diet; enzyme activity; fruits; gene expression; genes; inflammation; interleukin-10; interleukin-1beta; interleukin-6; interphase; longevity; macrophages; morbidity; nitric oxide; oxidative stress; phytohemagglutinin; plant extracts; reactive oxygen species; therapeutics; thiols; toxicity testing; traditional medicine; viability; Amazonia
Abstract:
... The fruit of Astrocaryum aculeatum G.Mey. (tucumã) is highly consumed by riverside communities in the Amazonian region. These communities have recently been shown to have increased longevity and reduced prevalence of age-related morbidity. Tucumã, which is locally used in their diet and traditional medicine may contribute to these features.To investigate the anti-inflammatory and antioxidant prope ...
DOI:
10.1016/j.jep.2019.112274

30. Asynchronous reproduction in three species of crocodilians in south-eastern Amazonia

Author:
Zilca Campos; Fábio Muniz; William E. Magnusson
Source:
Journal of natural history 2019 v.53 no.9-10 pp. 585-593
ISSN:
1464-5262
Subject:
Caiman crocodilus; Melanosuchus niger; Paleosuchus trigonatus; dams (hydrology); eggs; females; hatching; nesting; rivers; surface water; Amazonia
Abstract:
... We studied reproduction of three species of crocodilians, Paleosuchus trigonatus, Caiman crocodilus and Melanosuchus niger, in the Xingu River, near the Belo Monte hydroelectric dam. The periods of laying and hatching of eggs were estimated for each nest before (2013–2014) and after (2016–2017) the river was dammed and the reservoir was formed. Nesting of the three species occurred between August ...
DOI:
10.1080/00222933.2019.1605006

31. Avifaunal surveys along the lower Huallaga River, Region of Loreto, Peru: New distributional records, collection of topotypes, and taxonomic implications

Author:
Andre E. Moncrieff; Oscar Johnson; Daniel F. Lane; José Álvarez Alonso; Katya Balta; Karen Eckhardt; Jessica Armenta; Thomas Valqui; Flor Hernández; Mayori Soto Huaira; Cristian Mur; Michael G. Harvey; Karen Verde-Guerra; Sheila Figueroa Ramírez
Source:
Wilson journal of ornithology 2019 v.131 no.3 pp. 486-501
ISSN:
1559-4491
Subject:
geographical distribution; new taxa; rivers; surveys; Peru
Abstract:
... The lower Huallaga River in Peru was the focal region of 2 important ornithological collections in the mid-19th century and a third in the early 20th century. Many new taxa were described from these collections, yet the lower Huallaga region has since been largely unexplored by ornithologists. There is a need for modern sampling, including collection of genetic and vocal data, near type localities ...
DOI:
10.1676/18-108

32. Behind the veil – exploring the diversity in Phallus indusiatus s.l. (Phallomycetidae, Basidiomycota)

Author:
Tiara S. Cabral; Bianca DB. Silva; María P. Martín; Charles R. Clement; Kentaro Hosaka; Iuri G. Baseia
Source:
MycoKeys 2019 v.58 pp. 103-127
ISSN:
1314-4049
Subject:
Neotropics; Phallomycetidae; fungi; information; new species; population; Amazonia
Abstract:
... Studies have demonstrated that many cosmopolitan species actually consist of divergent clades that present high levels of morphological stasis throughout their evolutionary histories. Phallus indusiatus s.l. has been described as a circum-tropical species. However, this distribution may actually reflect the lack of taxonomic resolution due to the small number of diagnostic morphological characters ...
DOI:
10.3897/mycokeys.58.35324

33. Between food delicacies and food taboos: A structural equation model to assess Western students' acceptance of Amazonian insect food

Author:
Katia Laura Sidali; Sofia Pizzo; Edgardo I. Garrido-Pérez; Guenter Schamel
Source:
Food research international 2019 v.115 pp. 83-89
ISSN:
0963-9969
Subject:
eating disorders; edible insects; food intake; foodways; models; novel foods; palatability; peers; persuasion; structural equation modeling; students; surveys; Alps region; Amazonia; Ecuador; Italy
Abstract:
... Interest in commercializing insect-based foods is growing steadily. Nevertheless, most Western consumers still consider insects a food taboo. In this study, we investigated how persuasion strategies based on technology and social communication can intervene to reduce aversion towards the practice of eating a tropical insect from the Ecuadorian Amazon. We used a research design based on ethnoentomo ...
DOI:
10.1016/j.foodres.2018.07.027

34. Between resistance and negotiation: indigenous organisations and the Bolivian State in the case of TIPNIS

Author:
Cecilie Hirsch
Source:
Journal of peasant studies 2019 v.46 no.4 pp. 811-830
ISSN:
1743-9361
Subject:
governmental programs and projects; national parks; planning; roads; Amazonia; Bolivia
Abstract:
... A government-driven road-building project, crossing the national park and demarcated indigenous communitarian native land Isiboro Sécure (TIPNIS) in the Bolivian Amazon, has caused considerable debate, divisions and conflict. Based on extensive fieldwork in Bolivia, I examine the conflict between 2011 and 2013, focusing on specific cases of micro-politics with examples of changing strategies, loca ...
DOI:
10.1080/03066150.2017.1394846

35. Between structural change and local agency in the palm oil sector: Interactions, heterogeneities and landscape transformations in the Brazilian Amazon

Author:
Frederico Brandão; Fabio de Castro; Célia Futemma
Source:
Journal of rural studies 2019 v.71 pp. 156-168
ISSN:
0743-0167
Subject:
Elaeis guineensis; focus groups; governance; interviews; landscapes; migrant workers; stakeholders; surveys; Amazonia; Brazil
Abstract:
... Looking beyond a normative analysis of oil palm expansion, this paper offers a nuanced analysis of landscape transformations in the Brazilian Amazonian region of Tomé-Açu. Based on quantitative and qualitative data deriving from interviews with key stakeholders, focus groups and surveys with smallholders and migrant workers, contextualized and cross-checked with observations between 2011 and 2017 ...
DOI:
10.1016/j.jrurstud.2018.09.007

36. Beyond the Amazon Forest: Richness and Abundance of Bats in the Understory of Savannahs, Campinaranas and Terra Firme Forest

Author:
William D. De Carvalho; Luiz A. Costa Gomes; Isaí J. De Castro; Ana C. Martins; Carlos E. Lustosa Esbérard; Karen Mustin
Source:
Acta chiropterologica 2019 v.20 no.2 pp. 407-419
ISSN:
1733-5329
Subject:
Chiroptera; biomass; community structure; dry season; flowers; fruits; habitat fragmentation; habitat preferences; habitats; landscapes; nets (equipment); predation; primary productivity; rain forests; savannas; species abundance; species richness; understory; wet season; Amazonia
Abstract:
... The Amazon region is made up of a mosaic of important habitats scattered throughout the rainforests, which differ in vegetation structure, basal area, primary productivity, biomass and production of flowers and fruits. Consequently, species richness and abundance also vary between these habitat types, in part explaining the high levels of richness found in the Amazon region. Here, we sampled bats ...
DOI:
10.3161/15081109ACC2018.20.2.011

37. Biochar from Acai agroindustry waste: Study of pyrolysis conditions

Author:
Michel Keisuke Sato; Herdjania Veras de Lima; Aline Noronha Costa; Sueli Rodrigues; Augusto José Silva Pedroso; Claudia Maria Branco de Freitas Maia
Source:
Waste management 2019 v.96 pp. 158-167
ISSN:
0956-053X
Subject:
Euterpe oleracea; agricultural wastes; agronomic traits; biochar; fruits; hydrophobicity; pH; pollution; processing residues; pyrolysis; risk; seeds; soil conditioners; temperature; waste management; Amazonia; Brazil
Abstract:
... The production chain of Acai (Euterpe oleracea Mart) has a high economic representativeness in the Brazilian Amazon. However, wastes generated from the processing of the fruit has been deliberately discarded in the environment, causing health risks to the population due to environmental contamination or the proliferation of disease agents. Thus, the production of biochar arises as an alternative t ...
DOI:
10.1016/j.wasman.2019.07.022

38. Biodiversity in tropical plantations is influenced by surrounding native vegetation but not yield: A case study with dung beetles in Amazonia

Author:
Wallace Beiroz; Jos Barlow; Eleanor M. Slade; Cézar Borges; Julio Louzada; Emma J. Sayer
Source:
Forest ecology and management 2019 v.444 pp. 107-114
ISSN:
0378-1127
Subject:
functional diversity; plantations; sand fraction; canopy; forests; Eucalyptus; community structure; dung beetles; landscapes; entropy; timber production; indigenous species; soil texture; case studies; insect communities; conservation buffers; Amazonia
Abstract:
... Human-modified forests, including plantations and managed forest, will be a major component of tropical landscapes in the near future. To conserve biodiversity across modified tropical landscapes we must first understand what influences diversity in planted areas. We studied dung beetle communities in Eucalyptus plantations to assess the influence of local (canopy openness and soil texture) and la ...
DOI:
10.1016/j.foreco.2019.04.036

39. Biodiversity surrogates in Amazonian iron cave ecosystems

Author:
Leonardo C. Trevelin; Markus Gastauer; Xavier Prous; Gilberto Nicácio; Robson Zampaulo; Iuri Brandi; Guilherme Oliveira; José O. Siqueira; Rodolfo Jaffé
Source:
Ecological indicators 2019 v.101 pp. 813-820
ISSN:
1470-160X
Subject:
Arachnida; biodiversity; caves; community structure; databases; environmental indicators; extinction; iron; monitoring; phylogeny; planning; rare species; risk; terrestrial ecosystems; Amazonia
Abstract:
... An approach to deal with biodiversity knowledge shortfalls in conservation is to base systematic planning and monitoring on surrogate taxa that represent diversity patterns of the whole studied system. By adopting evolutionary history to guide the search for these suitable surrogates, it is possible to use lineage differences as predictors of biological processes promoting overall diversity. Tropi ...
DOI:
10.1016/j.ecolind.2019.01.086

40. Bionomy of Hermetia illucens (Diptera: Stratiomyidae) on Decomposing Swine Carcass in an Urban Area of Central Amazon

Author:
L M Barros; R L Ferreira-Keppler; R T Martins; A L N Gutjahr
Source:
Journal of medical entomology 2019 v.56 no.3 pp. 681-689
ISSN:
1938-2928
Subject:
Hermetia illucens; Sus scrofa; adults; bones; cadaver; crime; eggs; ethanol; females; forensic entomology; frequency distribution; hatching; insect larvae; instars; pig carcasses; postmortem changes; posture; principal component analysis; pupae; sex ratio; swine; urban areas; Amazonia; Brazil
Abstract:
... Biological data on development of Hermetia illucens (Linnaeus, 1758) is useful to calculate the postmortem interval (PMI), thus being important for solving crimes. We aimed at gathering bionomic information on H. illucens, during the decomposition of a Sus scrofa, in the urban zone of Manaus, Amazonas State. Mature females and eggs were collected on the swine carcass. After hatching under natural ...
DOI:
10.1093/jme/tjz005

41. Bird assemblages on Amazonian river islands: Patterns of species diversity and composition

Author:
Sérgio Henrique Borges; Fabricio Baccaro; Marcelo Moreira; Erik Lacerda Choueri
Source:
Biotropica 2019 v.51 no.6 pp. 903-912
ISSN:
0006-3606
Subject:
area; basins; biogeography; birds; censuses; climate change; dams (hydrology); dominant species; ecological succession; floodplains; habitats; islands; nets (equipment); rivers; species richness; Amazonia
Abstract:
... The principles of island biogeography are rarely applied to the animal assemblages of Amazonian river islands. Here, we compare bird assemblages of Amazonian river islands with a variety of mainland habitats. We also examine how bird species diversity and composition are related to island physical attributes. Birds were sampled with mist nets and qualitative censuses on 11 river islands and 24 mai ...
DOI:
10.1111/btp.12716

42. Blowdown disturbance effect on the density, richness and species composition of the seed bank in Central Amazonia

Author:
Natali Gomes Bordon; Anselmo Nogueira; Niwton Leal Filho; Niro Higuchi
Source:
Forest ecology and management 2019 v.453 pp. 117633
ISSN:
0378-1127
Subject:
Araceae; Cyperaceae; Melastomataceae; Moraceae; Urticaceae; botanical composition; canopy gaps; epiphytes; forest types; secondary forests; seedlings; shrubs; soil; soil sampling; topographic slope; trees; tropical rain forests; Amazonia
Abstract:
... Windstorms, known as blowdowns, create large canopy gaps in the tropical rainforest. Despite the occurrence of blowdowns in Central Amazonia, no studies have yet investigated the seed bank in areas altered by blowdown in the Amazon rainforest. The seed bank plays an important role in the regeneration of larger natural gaps, and changes in, or partial loss of, seed bank can modify the successional ...
DOI:
10.1016/j.foreco.2019.117633

43. Bovine papillomavirus 24: a novel member of the genus Xipapillomavirus detected in the Amazon region

Author:
Cíntia Daudt; Flavio R. C. da Silva; Samuel P. Cibulski; André F. Streck; Rebecca E. Laurie; John S. Munday; Cláudio W. Canal
Source:
Archives of virology 2019 v.164 no.2 pp. 637-641
ISSN:
0304-8608
Subject:
Xipapillomavirus; etiological agents; Epsilonpapillomavirus; genome; phylogeny; Deltapapillomavirus; viruses; cows; papilloma; mixed infection; Brazil; Amazonia
Abstract:
... Bovine papillomaviruses (BPVs) have been described as etiologic agents of cutaneous and mucosal papillomas in cattle. In the present study, we describe a new BPV that was detected in a cutaneous papilloma from a cow. Phylogenetic analysis suggests that this virus belong to the genus Xipapillomavirus, and we refer to it here as BPV type 24 (BPV24). Coinfection with members of the genera Epsilonpapi ...
DOI:
10.1007/s00705-018-4092-3

44. Brazil Nut Forest Concessions in the Peruvian Amazon: Success or Failure?

Author:
H.V. Willem; V.J. Ingram; M.R. Guariguata
Source:
international forestry review 2019 v.21 no.2 pp. 254-265
ISSN:
1465-5489
Subject:
Bertholletia excelsa; Brazil nuts; canopy; conservation areas; forests; fruits; governance; government agencies; harvesting; information sources; land use; law enforcement; logging; models; monitoring; supply chain; trees; Amazonia; Peru
Abstract:
... In Peru, concessions for harvesting Brazil nuts (fruits of the Amazon tree Bertholletia excelsa) were launched in the Madre de Dios Department in 2000. This study analyses the extent to which the Brazil nut concession system (which covers about 1 million ha of closed canopy forest) has met its objective of providing a governance model for sustainable and equitable use. Primary and secondary inform ...
DOI:
10.1505/146554819826606540

45. The Brazilian species of Elaphoglossum section Squamipedia (Dryopteridaceae)

Author:
Fernando B. Matos; John T. Mickel
Source:
Brittonia 2019 v.71 no.3 pp. 225-234
ISSN:
0007-196X
Subject:
Acrostichum; Elaphoglossum; flora; herbaria; lectotypes; monophyly; mountains; petioles; plant taxonomy; rhizomes; spores; taxonomic keys; tropical montane cloud forests; Amazonia; Brazil
Abstract:
... A taxonomic treatment for the three species of Elaphoglossum sect. Squamipedia found in Brazil is presented. The section is monophyletic and most of its species are characterized by slender, 1–1.5 mm wide, long-creeping stems; the presence of two peg-like aerophores on the rhizome just behind each petiole; pale brown stem scales; the absence of phyllopodia and hydathodes; and echinulate spores. El ...
DOI:
10.1007/s12228-019-09579-8

46. Brazil’s new president and ‘ruralists’ threaten Amazonia’s environment, traditional peoples and the global climate

Author:
Lucas Ferrante; Philip M Fearnside
Source:
Environmental conservation 2019 v.46 no.4 pp. 261-263
ISSN:
1469-4387
Subject:
agrochemicals; beef; business enterprises; climate; climate change; conservation areas; deforestation; forests; imports; minerals; politics; Amazonia; Brazil
Abstract:
... Jair Bolsonaro (Brazil’s new president) and “ruralists” (large landholders and their representatives) have initiated a series of measures that threaten Amazonia’s environment and traditional peoples, as well as global climate. These include weakening the country’s environmental agencies and forest code, granting amnesty to deforestation, approving harmful agrochemicals, reducing protected areas, a ...
DOI:
10.1017/S0376892919000213

47. CO2, CO, hydrocarbon gases and PM2.5 emissions on dry season by deforestation fires in the Brazilian Amazonia

Author:
Simone Simões Amaral; Maria Angélica Martins Costa; Turibio Gomes Soares Neto; Marillia Pereira Costa; Fabiana Ferrari Dias; Edson Anselmo; José Carlos dos Santos; João Andrade de Carvalho
Source:
Environmental pollution 2019 v.249 pp. 311-320
ISSN:
0269-7491
Subject:
United Nations Framework Convention on Climate Change; biomass; burning; carbon dioxide; carbon monoxide; deforestation; dry season; emissions; emissions factor; fires; forests; gases; greenhouse gases; methane; particulates; public policy; Amazonia; Brazil
Abstract:
... The rate of deforestation in Brazil increased by 29% between 2015 and 2016, resulting in an increase of greenhouse gas emissions (GHG) of 9%. Deforestation fires in the Amazonia are the main source of GHG in Brazil. In this work, amounts of CO2, CO, main hydrocarbon gases and PM2.5 emitted during deforestation fires, under real conditions directly in Brazilian Amazonia, were determined. A brief di ...
DOI:
10.1016/j.envpol.2019.03.023

48. Can Intensification of Cattle Ranching Reduce Deforestation in the Amazon? Insights From an Agent-based Social-Ecological Model

Author:
Finn Müller-Hansen; Jobst Heitzig; Jonathan F. Donges; Manoel F. Cardoso; Eloi L. Dalla-Nora; Pedro Andrade; Jürgen Kurths; Kirsten Thonicke
Source:
Ecological economics 2019 v.159 pp. 198-211
ISSN:
0921-8009
Subject:
cattle; climate; deforestation; ecosystems; income; issues and policy; land use; learning; markets; models; prices; ranching; social behavior; statistical analysis; Amazonia; Brazil
Abstract:
... Deforestation in the Amazon with its vast consequences for the ecosystem and climate is largely related to subsequent land use for cattle ranching. In addition to conservation policies, proposals to reduce deforestation include measures to intensify cattle ranching. However, the effects of land-use intensification on deforestation are debated in the literature. This paper introduces the abacra mod ...
DOI:
10.1016/j.ecolecon.2018.12.025

49. Carbon emissions and potential emissions reductions from low-intensity selective logging in southwestern Amazonia

Author:
Rosa C. Goodman; Matias Harman Aramburu; Trisha Gopalakrishna; Francis E. Putz; Nelson Gutiérrez; Jose Luis Mena Alvarez; Naikoa Aguilar-Amuchastegui; Peter W. Ellis
Source:
Forest ecology and management 2019 v.439 pp. 18-27
ISSN:
0378-1127
Subject:
carbon; certification; conservation areas; cutting; deforestation; felling; forestry; forests; greenhouse gas emissions; mining; roads; stems; trees; Amazonia; Peru
Abstract:
... Forests in southwestern Amazonia are increasingly being converted for agriculture, mining, and infrastructure development; subjected to low-intensity selective logging of high value timber species; and designated as conservation areas and indigenous reserves. To understand the impacts of forestry in this region, we evaluated carbon emissions from felling, skidding, and hauling in five FSC-certifie ...
DOI:
10.1016/j.foreco.2019.02.037

50. Carbonaceous components and major ions in PM10 from the Amazonian Basin

Author:
Danilo Custodio; Célia Alves; Yendry Jomolca; Pérola de Castro Vasconcellos
Source:
Atmospheric research 2019 v.215 pp. 75-84
ISSN:
0169-8095
Subject:
aerosols; air pollution; ammonium; basins; biomass; burning; calcium; carbonates; climate models; deforestation; forests; nitrates; organic carbon; particulates; pollution control; potassium; sodium; soil; sulfates; water solubility; Amazonia
Abstract:
... Air pollution mainly resulting from deforestation and agricultural activities has become one of the major concerns in the Amazonian Basin. A detailed analysis of the PM₁₀ chemical composition is critical for devising pollution control measures and improving climate models. In this study, daily 24-h filter samples were collected and analyzed in different sites of the Amazon Basin between 2008 and 2 ...
DOI:
10.1016/j.atmosres.2018.08.011