We carried out a study on the anurofaunal community from an Atlantic Forest fragment (Monte Verde mountains) and the surrounding area in Cambuci municipality, Rio de Janeiro State, Brazil, which constitutes one of the largest fragments remaining in the largely deforested landscape of the northern portion of the State. We combined three sampling methods: plot sampling, transects and pit-fall tra...

We examined seasonal patterns of fruit availability, dietary quality, and group size in the descendants of an introduced chimpanzee population on Rubondo Island, Tanzania. The site has supported a free-ranging population without provisioning for 40 years. Our goals were to determine whether Rubondo chimpanzees experience periods of fruit shortage, and whether they respond to changes in fruit av...

Correction In the article 'Genome empowerment for the Puerto Rican parrot – Amazona vittata. GigaScience 2012 1:13' [1] the leadership of avian phylogenomic project [2] mentioned in commentary should have been Guojie Zhang, Erich Jarvis, and Tom Gilbert [2]. We regret this omission. which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is prope...

This greenhouse experiment evaluated the effects of phosphate rock (PR) on arsenic and metal uptake by the arsenic hyperaccumulator Pteris vittata in a soil spiked with arsenic and heavy metals Cd, Pb and Zn. Five soil treatments were used, 1) control with no arsenic, 2) spiked with 50 mg kg(-1) As (As) as Na2H AsO4, 3) spiked with 50 mg kg(-1) As and P as PR (AsP), 4) spiked with 50 mg kg(-1) ...

We compared four methods to extract arsenic (As) from three different plants containing different As levels for As speciation with the goal of developing a more efficient method, i.e., As-hyperaccumulator Pteris vittata at 459-7714mgkg(-1), rice seedling at 53.4-574mgkg(-1), and tobacco leaf at 0.32-0.35mgkg(-1). The four methods included heating with dilute HNO3, and sonication with phosphate ...

Se presentan cinco registros de Galictis vittata lo que representa un incremento 26,3% para Tabasco, México. Dos los son en ambientes periurbanos y tres rurales al oeste Tabasco. Estos importantes porque G. es una especie amenazada este país, la cual hay pocos su presencia, además no se tenían el del estado.

Abstract Aims The present study aimed at: (i) verifying the suitability of pure sewage sludge (SS) as growing medium for hyperaccumulator species ( Pteris vittata , Odontarrhena chalcidica, Astragalus bisulcatus and Noccaea caerulescens ); (ii) evaluating removal As, Ni, Se Zn operated by chosen species; (iii) estimating potential metal yields (bio-ore production) connected monetary rewards in ...

Many animals move using lateral undulations, but snakes are noteworthy for using this type of locomotion in an unusual diversity of environments, including trees in which both the spacing and orientation of branches vary considerably. Despite branches providing discrete locations for snakes to generate propulsive forces during lateral undulation, the consequences of branch spacing for the locom...

We studied the leaf-litter frog community of Estação Ecológica Estadual Paraíso, in Guapimirim, Rio de Janeiro State, southeastern Brazil. Herein we combined three sampling methods (large plots, visual encounter surveys and pit-fall traps) to present data on species composition, richness, relative abundance and densities. The local assemblage of frogs associated to the leaf-litter was composed ...