scholarly journals Nutrient retranslocation in forest species in the Brazilian Amazon

2016 ◽  
Vol 38 (1) ◽  
pp. 93 ◽  
Author(s):  
Murilo Rezende Machado ◽  
Paulo de Tarso Barbosa Sampaio ◽  
João Ferraz ◽  
Rodrigo Camara ◽  
Marcos Gervasio Pereira
Keyword(s):  
Brazilian Amazon ◽  
Forest Species ◽  
Nutrient Retranslocation

Ecology and life history of the scansorial arboreal lizard Plica plica (Iguanidae) in Amazonian Brazil

1991 ◽  
Vol 69 (2) ◽  
pp. 504-511 ◽  
Author(s):  
Laurie J. Vitt
Keyword(s):  
Brazilian Amazon ◽  
Reproductive Season ◽  
Forest Species ◽  
Lizard Species ◽  
Lowland Forest ◽  
Prey Diversity ◽  
History Of ◽  
Amazonian Brazil ◽  
Two Populations ◽  
Clutch Mass

A field study on two populations of the tropical iguanid lizard Plica plica in the Brazilian Amazon revealed that this lowland forest species is diurnal, occurs on vertical smooth-barked trunks of the largest trees in the forest, and feeds mostly on ants. Comparisons between rainy season samples from Pará and dry season samples from Rondonia show that even though lizards ate, on average, the same number of prey, prey were larger in Rondonia and prey diversity was greater in Pará. Lizards sleep on tree trunks or similar surfaces when available, apparently leaving the trees only to deposit eggs. Clutches are deposited in palm litter and inside rotted palm trunks. Clutch size averages 2.9 ± 0.1 eggs and is significantly correlated with female snout–vent length. The reproductive season appears to be extended in that females produce at least two clutches. Relative clutch mass of females is low compared with that of other sit-and-wait foraging lizard species, and this, coupled with the flattened morphology, presumably reflects adaptations for maintaining the center of gravity near vertical smooth tree trunks.

Forestry control in the Brazilian Amazon I: wood and charcoal anatomy of three endangered species

IAWA Journal ◽  
2020 ◽  
Vol 41 (4) ◽  
pp. 490-509
Author(s):  
Celine Raphaela Vasconcelos Perdigão ◽  
Marcelo Mendes Braga Júnior ◽  
Thaís Alves Pereira Gonçalves ◽  
Claudionisio de Souza Araujo ◽  
Fábio Akira Mori ◽  
...  
Keyword(s):  
Endangered Species ◽  
Native Species ◽  
Brazilian Amazon ◽  
Vessel Diameter ◽  
Illegal Trade ◽  
Forest Species ◽  
Anatomical Features ◽  
Structural Modifications ◽  
Ray Density ◽  
Federal Laws

Abstract The Brazilian Amazon is vastly deforested by unsustainable practices. Several species of trees are threatened by extinction and their exact number is hard to quantify. Federal laws prohibit the harvest of endangered forest species. It is a vast challenge to control the illegal trade of wood and especially charcoal in Brazil. The goal of this work is to contribute to an identification database. It presents the anatomy of wood and charcoal of Bertholletia excelsa, Hevea brasiliensis and Swietenia macrophylla. Structural modifications due to carbonization were also studied. One Eucalyptus sp. hybrid was analysed as a comparison with native species. Anatomical features were well preserved in charcoals. Quantitative modifications, such as mass loss, increase of vessel and ray density, and reduction of vessel diameter and ray height, were seen in all species. The native species were easily distinguished from eucalypt in both wood and charcoal, and this study will allow easily sorting these species in cases of illegal trading. Since Amazon conservancy is highly dependent on the knowledge of native species, our results contribute to avoid illegal charcoal trade.

scholarly journals Quantification of biomass and litter in agroforestry system with sour orange cultivation in the Brazilian Amazon

2021 ◽  
Vol 10 (5) ◽  
pp. e41110515165
Author(s):  
Pedro Paulo da Costa Alves Filho ◽  
Osvaldo Ryohei Kato ◽  
Jessivaldo Rodrigues Galvão ◽  
Rubson da Costa Leite ◽  
Leonardo de Almeida Oliveira ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Brazilian Amazon ◽  
Agroforestry System ◽  
Agroforestry Systems ◽  
Sour Orange ◽  
Forest Species ◽  
Double Row ◽  
Inga Edulis ◽  
Randomized Design ◽  
Orange Trees

The knowledge of the quantity and composition of the deposited biomass is useful to plan the nutrient management of cultivations in agroforestry systems. The objective of this work was to evaluate the production of biomass and litter in two agroforestry systems with organic and conventional cultivations of sour orange. The areas use models of orange production by monoculture and under agroforestry systems: the first agroforestry system is composed of rows of brazilian mahogany (Swietenia macrophylla K.) accompanied by double rows of orange trees (Citrus aurantium L.); the second system is composed of rows of ingá (Ingá edulis Mart.) accompanied by double rows of orange trees. A completely randomized design was used in a 10x2 factorial scheme, with 4 replications. The locations within the management systems were organized as follows: agroforestry system composed of mahogany trees; Ingá trees agroforestry system; conventional sour orange monoculture system. The areas that the biomass and litter were collected in the locations in the systems were: between plants in the row for cultivation of forest species that make up the system; between rows of the forest species row and orange cultivation row; between plants in the orange cultivation row; between rows of the double row of orange cultivation. Two periods were analyzed in the experiment: the months of lowest and highest rainfall. Agroforestry systems promoted greater biomass and litter to the soil compared to monoculture. In this way, they were configured as a beneficial practice for the soil in sour orange crops in the Brazilian Amazon.

Age, Religion, and Taboos Influence Subsistence Hunting by Indigenous People of the Lower Madeira River, Brazilian Amazon

2020 ◽  
Vol 40 (2) ◽  
pp. 131
Author(s):  
Simon B. Knoop ◽  
Thais Q. Morcatty ◽  
Hani R. El Bizri ◽  
Susan M. Cheyne
Keyword(s):  
Indigenous People ◽  
Brazilian Amazon ◽  
Subsistence Hunting ◽  
Madeira River

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

2019 ◽  
Vol 24 (2) ◽  
pp. 103
Author(s):  
Tiago D. M. Barbosa ◽  
Suzana M. Costa ◽  
Maria Do Carmo E. Do Amaral
Keyword(s):  
National Park ◽  
Brazilian Amazon

RECENTES REGISTROS DE Bolitoglossa paraensis (UNTERSTEIN, 1930) (CAUDATA, PLETHODONTIDAE) NO CENTRO DE ENDEMISMO BELÉM

2008 ◽  
Vol 3 (1) ◽  
pp. 91-95
Author(s):  
Ruth Amanda Estupiñán
Keyword(s):  
Threatened Species ◽  
Brazilian Amazon ◽  
Red List ◽  
The West ◽  
Natural Reserve ◽  
Undisturbed Forest ◽  
Landscape Units ◽  
Definition Of

In the red list of threatened species of Pará State, in Brazil, the salamander Bolitoglossa paraensis was listed as vulnerable. Initially the species was considered a synonym with Bolitoglossa altamazonica, but was recently revalidated. This note discusses the validity of the specimens from the west of the Brazilian Amazon identified as B. paraensis. It is also discussed the categorization of the species as vulnerable, and the records of the species was mapped in the Endemism area Belém. In order to establish a Private Natural Reserve (RPPN), a herpetological survey was carried out in different landscape units of the Nova Amafrutas, in Benevides (Pará), and the records of B. paraensis were mapped in these landscape units. By comparing the abundances recorded by Crump (1971) and those results of the present study, suggested that this species is tolerant to antropic “capoeira” forest (old fallows) next to undisturbed forest. More molecular phylogeographic studies are needed in order to establish a stable the taxonomy status for B. paraensis, and also the definition of its real endemic status in the Center of Endemism of Belém.

Steigende Bestandszahlen bei Spechten und anderen Vogelarten dank Zunahme von Totholz? | An increase in the population of woodpeckers and other bird species thanks to an increase in the quantities of deadwood?

2009 ◽  
Vol 160 (11) ◽  
pp. 334-340 ◽  
Author(s):  
Pierre Mollet ◽  
Niklaus Zbinden ◽  
Hans Schmid
Keyword(s):  
Forest Inventory ◽  
Bird Species ◽  
National Forest Inventory ◽  
Population Increase ◽  
National Forest ◽  
Forest Species ◽  
Breeding Populations ◽  
Willow Tit ◽  
Middle Spotted Woodpecker ◽  
Important Habitat

Results from the monitoring programs of the Swiss Ornithological Institute show that the breeding populations of several forest species for which deadwood is an important habitat element (black woodpecker, great spotted woodpecker, middle spotted woodpecker, lesser spotted woodpecker, green woodpecker, three-toed woodpecker as well as crested tit, willow tit and Eurasian tree creeper) have increased in the period 1990 to 2008, although not to the same extent in all species. At the same time the white-backed woodpecker extended its range in eastern Switzerland. The Swiss National Forest Inventory shows an increase in the amount of deadwood in forests for the same period. For all the mentioned species, with the exception of green and middle spotted woodpecker, the growing availability of deadwood is likely to be the most important factor explaining this population increase.

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