Results 81 to 90 of about 3,733 (163)

Diversity of iron cave-dwelling mygalomorph spiders from Pará, Brazil, with description of three new species (Araneae)

Tropical Zoology, 2017
Mygalomorph spiders are rarely found in caves and most of the records appear as accidental or restricted to small populations. The present study took place in iron formations in Carajás region, southeastern Pará state, eastern Brazilian Amazon ...
Rafael Fonseca-Ferreira, Robson de Almeida Zampaulo, José Paulo Leite Guadanucci   +2 more
doaj  

Ferns and lycophytes from Serra dos Carajás, an Eastern Amazonian mountain range

Rodriguésia
In the state of Pará (Brazil), until the beginning of last decade little was known about the composition of the fern and lycophyte flora. The ferruginous mountains of Carajás are located in Southeastern Pará, mostly inserted in the Floresta Nacional de ...
Alexandre Salino, André Jardim Arruda, Thaís Elias Almeida   +2 more
doaj   +1 more source

Flora das cangas da Serra dos Carajás, Pará, Brasil: Apocynaceae

Rodriguésia
Resumo Este estudo apresenta um tratamento das espécies de Apocynaceae registradas nas cangas da Serra dos Carajás, Pará. São apresentadas descrições detalhadas, chaves para identificação dos gêneros e espécies, ilustrações, dados sobre distribuição ...
Géssica Elaine Azevedo Fernandes, Nara Furtado de Oliveira Mota, André Olmos Simões   +2 more
doaj   +1 more source

Physical stability of iron ore caves: geomechanical studies of a shallow underground cave in SE Brazil

REM: International Engineering Journal
Caves hosted in iron formations are attracting considerable interest due to their scientific and environmental value. Some of these caves are located in or near iron ore mine sites, which represent an important source of income to Brazil.
Iuri Brandi, Cristiane Silva Sebastião, Mauri Lopes Ferreira, Hernani Mota de Lima, Maria Filipa P. Gama   +4 more
doaj   +1 more source

Flora das cangas da Serra dos Carajás, Pará, Brasil: Opiliaceae

Rodriguésia
Resumo O presente estudo apresenta o tratamento taxonômico de Opiliaceae para as formações de canga da Serra dos Carajás (Pará, Brasil), onde foi registrada apenas uma espécie, Agonandra silvatica Ducke, táxon de distribuição Neotropical (Guianas ...
Aline Joseph Ramalho, Daniela Cristina Zappi   +1 more
doaj   +1 more source

Floral Integration and Phenotypic Selection on Floral Traits of Ipomoea cavalcantei (Convolvulaceae), a Rare, Endemic, and Endangered Species to the Amazon Ironstone Outcrops

Ecology and Evolution
Maintaining evolutionary potential is essential for species persistence, particularly for rare and endemic taxa that are more susceptible to habitat changes.
Adriano Valentin‐Silva, Ana Carolina Galindo daCosta, Arthur Domingos‐Melo, Lucas Erickson Nascimento daCosta, Kleber Resende Silva, Carolina daSilva Carvalho, Maurício Takashi Coutinho Watanabe   +6 more
doaj   +1 more source

Bacterial diversity in ferruginous duricrust (canga) and the physicochemical variables affecting their prevalence, distribution and predicted metabolic pathways. [PDF]

Antonie Van Leeuwenhoek
Jotta VFM, Silva CA, García GJY, Marques AR, Dos Santos Freitas A, Góes-Neto A, Badotti F.   +6 more
europepmc   +1 more source

Beneath the canopy, beneath the ground: how surface microhabitats shape cave communities. [PDF]

PeerJ
Oliveira MPA, Ferreira RL.
europepmc   +1 more source

Surface geoenvironments shape organic matter inputs in iron-ore caves of Carajás, southeastern Amazonia. [PDF]

PLoS One
Reis LS, Felix Guimarães JT, de Sá CYG, Bernard E, Ruiz Pessenda LC, Gastauer M, de Oliveira PE.   +6 more
europepmc   +1 more source

Investigating the microwave degradation of polypropylene microplastics and their impact on human intestinal cell models. [PDF]

Toxicol Rep
Ferreira ROG, Canga EM, Gowen A, McMorrow T, Xu JL.   +4 more
europepmc   +1 more source