Acta Amazonica 51(2) 2021 - Summary
   
Issues: 51-2 Agronomy and Forestry PDF
Title: Degree of seed desiccation sensitivity of the Amazonian palm Oenocarpus bacaba depends on the criterion for germination
Authors: Lydiane Lucia de Sousa BASTOS, Geângelo Petene CALVI, Manuel de Jesus Vieira LIMA JÚNIOR, Isolde Dorothea Kossmann FERRAZ
Keywords: Arecaceae, drying, recalcitrant seeds, seedling, stress
DOI http://dx.doi.org/10.1590/1809-4392202001951

   
Issues: 51-2 Agronomy and Forestry PDF
Title: Phenology and fruit set comparison of camu-camu (Myrciaria dubia) in a natural population and a plantation in the central Amazon, Brazil
Authors: Grace Anne Coelho FERREIRA, Adrian Paul Ashton BARNETT, Cristiane KRUG
Keywords: flowering, fruit yield, floodplain forest, terra firme, Myrtaceae
DOI http://dx.doi.org/10.1590/1809-4392202000581

   
Issues: 51-2 Agronomy and Forestry PDF
Title: Short-term effect of a crop-livestock-forestry system on soil, water and nutrient loss in the Cerrado-Amazon ecotone
Authors: Cornélio Alberto ZOLIN, Eduardo da Silva MATOS, Ciro Augusto de Souza MAGALHÃES, Janaína PAULINO, Rattan LAL, Sílvio Tulio SPERA, Maurel BEHLING
Keywords: water erosion, soil function, sustainability, integrated production systems
DOI http://dx.doi.org/10.1590/1809-4392202000391

   
Issues: 51-2 Animal and Fisheries Sciences PDF
Title: Reproductive cycle of the mangrove oyster, Crassostrea rhizophorae (Bivalvia: Ostreidae) cultured in a macrotidal high-salinity zone on the Amazon mangrove coast of Brazil
Authors: Ícaro ANTONIO, Ana SOUSA, Tiago LENZ, Izabel FUNO, Rodolf LOPES, Marina FIGUEIREDO
Keywords: reproduction; spawning; environmental factors; brackishwater aquaculture
DOI http://dx.doi.org/10.1590/1809-4392202003582

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: Diversity of ectoparasites and endoparasites infecting Brachyplatystoma vaillantii (Siluriformes: Pimelodidae), a large migratory catfish from the Amazon
Authors: Ivanildo Amanajás BRITO-JUNIOR, Marcos TAVARES-DIAS
Keywords: fish, parasites, Laulao catfish, helminths, crustaceans, mites
DOI http://dx.doi.org/10.1590/1809-4392201901321

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: Effect of environmental and spatial factors on small-sized fish assemblages in a tropical river
Authors: Izaias Médice FERNANDES, Katiele de Jesus SACOMAN, José Paulo de FARIAS-NETO, Hugmar Pains da SILVA, Jhony VENDRUSCOLO, Luzia da Silva LOURENÇO
Keywords: distance from headwaters, pH, longitudinal gradient, Amazonas basin
DOI http://dx.doi.org/10.1590/1809-4392202002303

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: Molecular analysis reveals high diversity in the Hoplias malabaricus (Characiformes, Erythrinidae) species complex from different Amazonian localities
Authors: Alex M. V. Ferreira, Leila Braga Ribeiro, Eliana Feldberg
Keywords: trahira, DNA barcoding, karyotype, karyomorph
DOI http://dx.doi.org/10.1590/1809-4392202001652

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: Using osteological measurements to estimate body length in Amazonian manatees
Authors: Gisele de Castro Maciel VALDEVINO, Vera Maria Ferreira DA SILVA, Rodrigo de Souza AMARAL
Keywords: Sirenia, morphometry, collections, osteological material
DOI http://dx.doi.org/10.1590/1809-4392202004731

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: New record of Cepa apeca (Diptera, Syrphidae, Eristalinae, Merodontini) in the Andean-Amazonian region of Colombia and expansion of its geographic range
Authors: Henry Mauricio PARADA-MARIN, Augusto L. MONTOYA, Yardany RAMOS-PASTRANA
Keywords: Amazon foothills, flower flies, geographical records, Neotropical
DOI http://dx.doi.org/10.1590/1809-4392202003841

   
Issues: 51-2 Biodiversity and Conservation PDF
Title: Checklist of benthic algae from beaches and rocky outcrops on the northeast coast of Pará state, Brazilian Amazonia
Authors: Alexandre de Gusmão PEDRINI, Gabriel Irene Pereira GUARINO, Felipe dos Santos Pereira DINIZ, José Eduardo MARTINELLI FILHO
Keywords: Amazon shelf, Neotropical region, phycology, South America, coastal algae
DOI http://dx.doi.org/10.1590/1809-4392202004431

   
Issues: 51-2 Chemistry and Pharmacology PDF
Title: In vitro antimicrobial activity of methanolic extracts from cutaneous secretions of Amazonian amphibians against phytopathogens of agricultural interest
Authors: Livia Deice RAASCH-FERNANDES, Solange Maria BONALDO, Domingos de Jesus RODRIGUES, Stela Regina FERRARINI, Ana Gabriela Araújo VERÇOSA, Daiane Lopes de OLIVEIRA
Keywords: inhibition; conidia; Rhaebo guttatus; Rhinella marina
DOI http://dx.doi.org/10.1590/1809-4392201904462

   
Issues: 51-2 Materials Technology PDF
Title: Physico-mechanical properties of the wood of freijó, Cordia goeldiana (Boraginacea), produced in a multi-stratified agroforestry system in the southwestern Amazon
Authors: Adriano Reis Prazeres MASCARENHAS, Marta Silvana Volpato SCCOTI, Rafael Rodolfo de MELO, Fernando Luíz de Oliveira CORRÊA, Emanuel Fernando Maia de SOUZA, Alexandre Santos PIMENTA
Keywords: tropical wood, agroecosystems, chemical composition, mechanical properties, physical properties
DOI http://dx.doi.org/10.1590/1809-4392202003001