Results 71 to 80 of about 21,429 (184)

Fishes in first order stream in Ivaí River drainage basin, upper Paraná River Basin, Paraná state, Brazil [PDF]

Check List, 2011
Itiz Stream is a first order tributary of the Ivaí River basin, located in a rural area of Marialva municipality, Paraná state. Fish were sampled in October, November and December 2007, September 2008 and March 2009, using electrofishing and a sieve ...
Maria Isabel de Araújo, Rosilene Luciana Delariva, Karine Orlandi Bonato, Jislaine Cristina da Silva   +3 more
doaj   +3 more sources

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

New Phytologist, EarlyView.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow, Niall P. McNamara, Dafydd M. O. Elias, Carla Gomez, Jack Lamb, Rodrigo Nunes de Sousa, Darlene Gris, Leonardo Pequeno Reis, Alison M. Hoyt, Sunitha Rao Pangala   +9 more
wiley   +1 more source

Fishes (Osteichthyes: Actinopterygii) from the Penacho stream, upper Paraná River basin, Paraná state, Brazil [PDF]

Check List, 2013
The focus of this work was to survey the ichthyofauna of the Penacho stream, a tributary of the Laranjinha River, northeastern Paraná State, in an area of the Upper Paraná River basin still devoid of ichthyofaunal studies.
Alexandro Costa, Dhiego Ferreira, Wilson Silva, Augusto Zanatta, Oscar Shibatta, Bruno Galindo   +5 more
doaj   +3 more sources

[PROVISIONAL] Genetic evidence for a species complex within the piranha Serrasalmus maculatus (Characiformes, Serrasalmidae) from three Neotropical River basins based on mitochondrial DNA sequences

Genetics and Molecular Biology
Mitochondrial molecular markers (DNA sequences of D-loop, cytochrome b and cytochrome c oxidase I) were employed to characterize populations of the piranha Serrasalmus maculatus from Upper Paraná, Upper Paraguay and Tocantins River basins.
Thaís Souto Bignotto, Thiago Cintra Maniglia, Vivian Nunes Gomes, Isadora Janolio de Oliveira, Carlos Sérgio Agostinho, Sônia Maria Alves Pinto Prioli, Alberto José Prioli   +6 more
doaj   +1 more source

Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes [PDF]

, 2017
The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period.
Abrevaya, Ximena Celeste, Chaffin, Michael S., Conti, Maria Josiane, Navarro, Margareth Sugano, Novoselov, Alexey A., Schneider, Jerusa, Serrano, Paloma, Silva, Dailto, Souza Filho, Carlos Roberto de   +8 more
core   +1 more source

Radiocarbon reservoir ages and hardwater effect for the northeastern coastal waters of Argentina. [PDF]

, 2008
Accelerator mass spectrometry (AMS) radiocarbon dates were obtained for 18 mollusk shells collected alive along the Buenos Aires province coast, Argentina, over the period AD 1914–1935.
Aguirre, Marina Laura, Borel, Claudia Marcela, Gomez, Eduardo Alberto, Martinez, Daniel Emilio   +3 more
core   +2 more sources

An annotated checklist of freshwater copepoda (crustacea, hexanauplia) from continental Ecuador and the Galapagos archipelago [PDF]

, 2019
An annotated checklist of the free-living freshwater Copepoda recorded in different regions in Ecuador (including the Amazon, the Andes, the coastal region, and the Galapagos Islands) is here provided.
Corgosinho P. H. C., De Oliveira Geraldes-Primeiro L. J., Dos Santos-Silva E. N., Holynska M., Lopez C., Marrone F., Perbiche-Neves G.   +6 more
core   +1 more source

Trophic Redundancy and the Hidden Dietary Overlap Between Native and Invasive Stream Fishes

Ecology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT Biological invasions introduce non‐native species into natural ecosystems, often reshaping localcommunities and altering trophic interactions. In freshwater environments, such invasions can intensify resource use and threaten native fish diversity.
Ronielson Gaia, Ana Carolina Martins‐Pereira, Paulo Ricardo S. Camargo, Virgilio Teixeira Carrijo, Rafael Cunha Bruno, Fagner de Souza, Victor A. Tagliacollo   +6 more
wiley   +1 more source

Biologia e características populacionais de uma espécie rara de Pseudopimelodidae da Bacia do Alto Rio Paraná [PDF]

, 2010
Streams contain an expressive fraction of the South American fish diversity, mostly composed of small-sized, endemic, and rare species. Populational, reproductive, and diet aspects of Microglanis garavelloi were studied, aiming to make a wide ...
ARCIFA, Marlene Sofia, ESGUÍCERO, André Luiz Henríques   +1 more
core   +1 more source

Shifting Seas, Changing Diets: Evidence of Temporal Dietary Shifts in Marine Megafauna in Southern Brazil (2017–2023)

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.
ABSTRACT Understanding the dietary dynamics of marine megafauna is essential for interpreting ecological interactions and assessing environmental changes in marine ecosystems. We analysed temporal trends in the diets of eight megafaunal species, comprising marine mammals, seabirds, and sea turtles.
Joao Bosco Gusmao, Mario Roberto Castro Meira‐Filho, Camila Domit   +2 more
wiley   +1 more source