scholarly journals Litter production in a natural stand of Brazil nut trees (Bertholletia excelsa Bonpl.)

2018 ◽  
Vol 13 (5) ◽  
pp. 228-238
Author(s):  
Leandro de Moura Guerreiro Quêzia ◽  
Cosme de Oliveira Júnior Raimundo ◽  
de Lourdes Pinheiro Ruivo Maria ◽  
Emidio da Silva Katia ◽  
Patrick Beldini Troy ◽  
...  
Keyword(s):  
Litter Production ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
Natural Stand

scholarly journals Corrigendum to “Accurate mapping of Brazil nut trees (Bertholletia excelsa) in Amazonian forests using WorldView-3 satellite images and convolutional neural networks”

2021 ◽  
pp. 101326
Author(s):  
Matheus Pinheiro Ferreira ◽  
Rodolfo Georjute Lotte ◽  
Francisco V. D’Elia ◽  
Christos Stamatopoulos ◽  
Do-Hyung Kim ◽  
...  
Keyword(s):  
Neural Networks ◽  
Convolutional Neural Networks ◽  
Satellite Images ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
Amazonian Forests

scholarly journals Photosynthetic pigments and carbohydrates in young Brazil nut (Bertholletia excelsa H.B.K.) plants exposed to moderate and severe water deficiency

2016 ◽  
Vol 10 (07) ◽  
pp. 920-925 ◽  
Author(s):  
Paula Francyneth Nascimento Silva ◽  
◽  
Carla Leticia Figueredo de Carvalho Souza ◽  
Jose Rodrigo Mendes e Chagas ◽  
Gabriel Mascarenhas Maciel ◽  
...  
Keyword(s):  
Photosynthetic Pigments ◽  
Water Deficiency ◽  
Brazil Nut ◽  
Bertholletia Excelsa

scholarly journals Distribution extension and geographic distribution map of the Brazil-nut poison dart frog Adelphobates castaneoticus (Caldwell & Myers, 1990) (Anura: Dendrobatidae): new record for southwestern Pará State, Brazil

Check List ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 244 ◽  
Author(s):  
Bruno Felipe Camera ◽  
Diones Krinski
Keyword(s):  
Geographic Distribution ◽  
New Record ◽  
Distribution Map ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
Oviposition Sites

Adelphobates castaneoticus uses the woody husks of Brazil nut trees, Bertholletia excelsa, (without nuts and filled with water) as oviposition sites. Three specimens of A. castaneoticus were found near Brazil nut trees in Novo Progresso, Pará State, Brazil. This record increases the distribution this species more than 500 km to the southwest.

scholarly journals Description of larva and pupa of the weevil Hybolabus amazonicus Voss (Attelabidae: Attelabinae), a leaf roller on Brazil nut (Bertholletia excelsa)

2020 ◽  
Author(s):  
Sergio Antonio Vanin ◽  
Daniela De Cássia Bená
Keyword(s):  
Leaf Roll ◽  
Instar Larva ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
Leaf Roller ◽  
Preimaginal Stages ◽  
Amazonian Region ◽  
First Descriptions

The last instar larva and the pupa of Hybolabus amazonicus Voss, 1925 are described and illustrated, based upon adults and immatures collected in the Amazonian Region (Acre and Amazonas, Brazil). The larvae live and develop inside a leaf-roll made by the female weevil. Although the species has already been reported damaging leaves of the Brazil nut (Bertholletia excelsa Humb. & Bonpl., Lecythidaceae) in the states of Acre and Amazonas, the preimaginal stages have not been formerly described. These are the first descriptions of larva and pupa of a species of the genus Hybolabus Jekel, 1860.

scholarly journals Demography of the Brazil nut tree (Bertholletia excelsa) in the Bolivian Amazon: impact of seed extraction on recruitment and population dynamics

2002 ◽  
Vol 18 (1) ◽  
pp. 1-31 ◽  
Author(s):  
PIETER A. ZUIDEMA ◽  
RENÉ G. A. BOOT
Keyword(s):  
Light Availability ◽  
Reproductive Period ◽  
Primary Forest ◽  
Matrix Population Models ◽  
Brazil Nut ◽  
Size Category ◽  
Bertholletia Excelsa ◽  
Population Growth Rates ◽  
Forest Sites ◽  
Adult Trees

A demographic study was carried out on Bertholletia excelsa, the Brazil nut tree, in two primary forest sites in Northern Bolivia where Brazil nuts have been harvested for several decades. In spite of the large proportion (93%) of seeds that are harvested, reasonable densities of recently emerged seedlings were found. Seeds of Bertholletia are contained in woody fruits that are primarily opened by agoutis. Most fruits are left untouched on the forest floor for 1–2 y before they are opened, possibly due to high energetic costs of fruit opening just after fruit fall. However, the proportion of viable seeds is strongly reduced in older fruits.Growth in diameter at breast height (dbh) was low for pole-sized trees (< 15 cm dbh) and adult trees (> 100 cm dbh) and peaked for intermediate-sized trees (30–60 cm). These trees often attained a growth rate of > 1.5 cm y−1, which is high compared with other non-pioneer tropical trees. This, and the strong growth response to increased light availability found for seedlings and saplings, suggest that Bertholletia excelsa can be classified as a gap-dependent species. Matrix population models were constructed for both study populations. Population growth rates (λ) were close to one, and were most sensitive to persistence in one size category. Age estimates revealed that age at first reproduction (at dbh > 60 cm) amounts to over 120 y, and age in the last category (dbh > 160 cm) to almost 300 y. Given the continuous rejuvenation of the population, the stable population size, the high age at maturity and the long reproductive period, it is concluded that current levels of Brazil nut extraction may be sustained at least for several decades and perhaps for even longer periods.

Uncovering spatial patterns in the natural and human history of Brazil nut (Bertholletia excelsa ) across the Amazon Basin

2015 ◽  
Vol 42 (8) ◽  
pp. 1367-1382 ◽  
Author(s):  
Evert Thomas ◽  
Carolina Alcázar Caicedo ◽  
Crystal H. McMichael ◽  
Ronald Corvera ◽  
Judy Loo
Keyword(s):  
Spatial Patterns ◽  
Amazon Basin ◽  
Human History ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
History Of
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