Results 91 to 100 of about 5,931 (210)

Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon

Journal of Fish Biology, EarlyView.
Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy, Carolyn Morris, Susana Braz‐Mota, Chris M. Wood, Rafael M. Duarte, Ora E. Johannsson, Adalberto L. Val   +6 more
wiley   +1 more source

Arachnida at "Reserva Ducke", Central Amazonia/Brazil

, 2002
The class Arachnida contains 11 recent orders: Acari, Amblypygi, Araneae, Opiliones, Palpigradi, Pseudoscorpiones, Ricinulei, Schizomida, Scorpiones, Solifugae and Uropygi (Thelyphonida). In total, >570 families, >9165 genera and >93455 species are known world-wide. More than 136 families, >482 genera and >1547 described species occur in Amazonia. Data
Adis, Joachim U., Bonaldo, Alexandre Bragio, Brescovit, Antônio Domingos, Bertani, Rogerio, Cokendolpher, James C., Condé, Bruno, Kury, Adriano Brilhante, Lourenc¸o, Wilson Roberto, Mahnert, Volker, Pinto-Da-Rocha, Ricardo, Platnick, Norman I., Reddell, James R., Rheims, Cristina Anne, Suesdek Rocha, Lincoln, Rowland, J. Mark, Weygoldt, Peter, Woas, Steffen   +16 more
openaire   +1 more source

Amazonian drought of 2023: Environmental conditions relevant to fishes

Journal of Fish Biology, EarlyView.
Abstract This paper provides a platform for the following studies within this Special Issue. ‘Ecophysiology of fishes in the two great tributaries of the Amazon in the Anthropocene’. It documents the water quality conditions and accompanying zooplankton community structure and biomass relative to fish health in the Rio Negro and Rio Solimões during the
Ora E. Johannsson, Thiago L. Nascimento, Helen Agasild, Priit Zingel, Rafael M. Duarte, Gudrun de Boeck, Anne Cremazy, Jhonatan Mota da Silva, Carolyn Morris, Chris M. Wood, Adalberto L. Val   +10 more
wiley   +1 more source

Feeding ecology of an Amazonian electric knifefish under altered flood‐pulse dynamics caused by hydroelectric damming

Journal of Fish Biology, EarlyView.
Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa, Antonio A. Jardim Jr, Erival G. Prata, Rafael R. Gusmão, Angelo J. Faro Júnior, Alan S. Fonseca, Danielly T. Hashiguti, Luciano F. A. Montag, Tiago M. S. Freitas   +8 more
wiley   +1 more source

Flavobacterium oreochromis From Farmed Tambaqui (Colossoma macropomum): Insights Into Genetic, Phenotypic and Pathogenic Diversity

Journal of Fish Diseases, EarlyView.
ABSTRACT Flavobacterium spp. are the etiological agents of columnaris disease. Although there is evidence that columnaris poses a significant threat to the farming of tambaqui (Colossoma macropomum), there remains a large gap in understanding the genetic and phenotypic diversities of columnaris‐causing bacteria (CCB).
Elcimara Cardoso Pereira, Mariluce dos Reis Ferreira, Suzana Kotzent, Luiz Fagner Ferreira Nogueira, Guilherme Campos Tavares, Henrique César Pereira Figueiredo, Fabiana Pilarski, Gustavo Moraes Ramos Valladão, Sílvia Umeda Gallani   +8 more
wiley   +1 more source

Vegetation Warming and Greenness Decline across Amazonia during the Extreme Drought of 2023

Remote Sensing
In 2023, most parts of the world experienced exceptional heat. In particular, anomalous warm temperatures and heatwave events were evidenced across South America during the second half of the year.
Juan Carlos Jiménez, Vitor Miranda, Isabel Trigo, Renata Libonati, Ronaldo Albuquerque, Leonardo F. Peres, Jhan-Carlo Espinoza, José Antonio Marengo   +7 more
doaj   +1 more source

Fine-root dynamics vary with soil depth and precipitation in a low-nutrient tropical forest in the Central Amazonia. [PDF]

Plant Environ Interact, 2020
Cordeiro AL, Norby RJ, Andersen KM, Valverde-Barrantes O, Fuchslueger L, Oblitas E, Hartley IP, Iversen CM, Gonçalves NB, Takeshi B, Lapola DM, Quesada CA.   +11 more
europepmc   +1 more source

Plastid genome structure and phylogenomics of the freshwater red algal order Batrachospermales (Rhodophyta)

Journal of Phycology, EarlyView.
Abstract For the freshwater red algal order Batrachospermales, the number of plastid genomes available is relatively small compared to the number of genera. Fully assembled plastid genomes can provide insights into plastid evolution and crucial data for phylogenetic reconstruction.
Roseanna M. Crowell, Nadia M. Lemes Da Silva, Monica O. Paiano, Morgan L. Vis, Orlando Necchi Jr.   +4 more
wiley   +1 more source

Vast, overlooked peat, and organic soils in Brazil's Cerrado: carbon storage, dynamics, and stability

New Phytologist, EarlyView.
Summary Tropical peatlands are critical for climate mitigation due to their dual role as major carbon sinks and methane sources. In rainforests, high and stable rainfall supports peat accumulation in tropical climates. However, groundwater‐fed peatlands in seasonally dry tropical ecosystems remain poorly understood, despite their potential importance ...
Larissa S. Verona, Amy E. Zanne, Susan Trumbore, Paulo N. Bernardino, Guilherme M. Alencar, Thalia Andreuccetti, David Herrera‐Ramírez, João C. F. Cardoso, Demetrius Lira‐Martins, Guilherme G. Mazzochini, Natashi Pilon, Rafael S. Oliveira   +11 more
wiley   +1 more source

Coronavirus Detection in Bats Captured on the Deforestation Arc of Mato Grosso, Brazil

Zoonoses and Public Health, EarlyView.
ABSTRACT Coronaviruses (CoV) are RNA viruses associated with enteric and respiratory diseases and known for their emergence potential in humans and other mammals. CoVs originate from zoonotic transmission, in which bats are natural reservoirs. Previous studies suggest that CoV diversity is positively correlated with bat diversity, whereas anthropogenic
Matheus Augusto Calvano Cosentino, Victor Wanderkoke, Francimeire Fernandes Ferreira, Sergio Gomes Silva, Mirela D'arc, André Felipe Andrade dos Santos   +5 more
wiley   +1 more source