Dynamic modeling of forest conversion: Simulation of past and future scenarios of rural activities expansion in the fringes of the Xingu National Park, Brazilian Amazon

Author(s):  
Eduardo E. Maeda ◽  
Cláudia Maria de Almeida ◽  
Arimatéa de Carvalho Ximenes ◽  
Antonio R. Formaggio ◽  
Yosio E. Shimabukuro ◽  
...  
2019 ◽  
Vol 24 (2) ◽  
pp. 103
Author(s):  
Tiago D. M. Barbosa ◽  
Suzana M. Costa ◽  
Maria Do Carmo E. Do Amaral

Phytotaxa ◽  
2017 ◽  
Vol 319 (3) ◽  
pp. 289 ◽  
Author(s):  
ANDREAS FLEISCHMANN ◽  
SUZANA M. COSTA ◽  
VOLKER BITTRICH ◽  
MARIA DO CARMO ESTANISLAU DO AMARAL ◽  
MICHAEL HOPKINS

A new species of Genlisea section Genlisea from the white-sand savannas (“campinaranas”) of Brazilian Amazon is described and illustrated, providing remarks on habitat and ecology as well as SEM seed images. Genlisea multiflora has been recorded from Viruá National Park, and is of affinity to the large, purple-flowered species G. sanariapoana and G. guianensis. An identification key to all Genlisea species north of the Amazon is presented.


Data in Brief ◽  
2018 ◽  
Vol 21 ◽  
pp. 1151-1156
Author(s):  
Peggy Heine ◽  
Jonas Hausen ◽  
Richard Ottermanns ◽  
Andreas Schäffer ◽  
Martina Roß-Nickoll

Check List ◽  
2015 ◽  
Vol 11 (2) ◽  
pp. 1613 ◽  
Author(s):  
José Augusto Teston ◽  
Danilo Do C. V. Correa

This study evaluated the Arctiini fauna of the Serra do Pardo National Park (Pará, Brazil) between 22 September and 3 October 2011. Light traps were left one night in each sampling site (SS) from 18:00 h to 6:00 h of the next day. The following parameters were evaluated: richness (S), abundance (N), diversity index (H’), Shannon uniformity (U) index, and Berger-Parker dominance (BP). Richness was estimated using the non-parametric methods Chao1, Chao2, ACE, ICE, Jackknife1, Jackknife2 and Bootstrap. A total of 3,247 specimens were captured, belonging to 221 Arctiini taxa; 32 of these are new records for the state of Pará and, of these, six are new records for the Brazilian Amazon. The Arctiini fauna is very rich and uniform. The richness estimator and rarefaction curve indicated the need for increased sampling efforts in the area.


2018 ◽  
Vol 23 (4) ◽  
pp. 413-433 ◽  
Author(s):  
Luca Di Corato ◽  
Michele Moretto ◽  
Sergio Vergalli

AbstractDeforestation results from the trade-off between benefits from forest conservation and economic profits associated with land development. However, as net gains are often uncertain, irreversible land development may later be regretted. To better inform conservation policies, we use a real options framework to model irreversible forest conversion under uncertain conservation benefits and determine the associated optimal long-run average rate of deforestation. We then analyze the impact of the demand for agricultural products on the rate of deforestation in the Brazilian Amazon. In a scenario analysis for the nine states of the Brazilian Amazon, we calculate: (i) the expected time for exhaustion of the current forest stock; and (ii) the potential forest coverage for the next 20, 100 and 200 years. Our results suggest that if forest benefits grow over time at a sufficiently high speed, they may significantly slow down deforestation. In contrast, the higher their volatility, the faster deforestation proceeds.


Phytotaxa ◽  
2016 ◽  
Vol 245 (2) ◽  
pp. 153 ◽  
Author(s):  
Pedro Fiaschi ◽  
GREGORY M. PLUNKETT

Two new species of the largely Brazilian Didymopanax clade of Schefflera (Araliaceae) are here described, illustrated, and compared to similar taxa. Both are from poorly sampled areas in the Brazilian Amazon Basin. Schefflera prancei is known only from the Serra do Divisor National Park, at the border between Brazil and Peru. It differs from the similar S. confusa by its leaflets with narrowly elliptic to oblanceolate blades, with an acuminate to cuspidate apex, and the light brown to grayish sericeous indument on the abaxial blade surface. The second new species, Schefflera pubicarpa, is found in central Amazonian forests, and differs from similar species of the clade by a combination of characters, including a large-tree habit, leaves with 8 to 10 leaflets, inflorescences with ascending secondary branches and lacking tertiary branches, flowers with trichomes along the styles, and pubescent fruits. While this species appears to have a restricted distribution in Brazil, a westward extension reaching into Peru, Colombia, and Ecuador may be likely as new collections from intermediate areas become available.


Wetlands ◽  
2020 ◽  
Vol 40 (5) ◽  
pp. 1445-1458 ◽  
Author(s):  
Michael J. Osland ◽  
Laura C. Feher ◽  
Gordon H. Anderson ◽  
William C. Vervaeke ◽  
Ken W. Krauss ◽  
...  

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