Results 61 to 70 of about 740 (168)

Induced spawning of the endangered Neotropical species Steindachneridion parahybae (Siluriformes: Pimelodidae)

Neotropical Ichthyology
The "surubim do Paraíba" (Steindachneridion parahybae) is a freshwater catfish endemic to the Paraíba do Sul River basin, Brazil. This species has been seriously threatened by environmental disturbances in the last several decades. Wild Steindachneridion
Danilo Caneppele, Renato M. Honji, Alexandre W. S. Hilsdorf, Renata G. Moreira   +3 more
doaj   +1 more source

Characterization of Nd Radiogenic Isotope Signatures in Sediments From the Southwestern Atlantic Margin

Frontiers in Earth Science, 2018
Based on radiogenic isotope systems of neodymium [Epsilon Neodymium-εNd(0), 143Nd/144Nd, 147Sm/144Nd, and Sm-Nd Depleted Mantle Model ages-TDM] from current and previous data of continental rocks and associated sediments, this work provides the ...
Simone S. Mantovanelli, Colombo C. G. Tassinari, Michel M. De Mahiques, Michel M. De Mahiques, Luigi Jovane, Everton Bongiolo   +5 more
doaj   +1 more source

Living Near the Surface: Dive Behavior of Sei Whales (Balaenoptera borealis) in the Southwestern Atlantic Ocean

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT Understanding the diving behavior of baleen whales in tropical breeding areas is essential for evaluating both ecological functions and anthropogenic threats. In this study, we combined satellite transmitters and generalized additive mixed models (GAMMs) to investigate the dive behavior of sei whales (Balaenoptera borealis) in Santos Basin (SB)
Clarêncio Gomes Baracho‐Neto, Leonardo Liberali Wedekin, David Haas, Lucas Lima de Oliveira, Marta Jussara Cremer, Alexandre Novaes Zerbini   +5 more
wiley   +1 more source

Institutional and policy analysis of river basin management : the Alto-Tiete river basin, Sao Paulo, Brazil [PDF]

The authors describe and analyze river basin management in the most intensely urbanized and industrialized region of Brazil. The area covered by the Alto Tiete basin is almost coterminous with the Metropolitan Region of Sao Paulo. With a drainage area of
Johnsson, Rosa Maria Formiga, Kemper, Karin   +1 more
core  

Feeding of Oligosarcus hepsetus (Cuvier, 1829) (Characiformes) in the Serra do Mar State Park - Santa Virgínia Unit, São Paulo, Brazil

Brazilian Journal of Biology
We describe the diet of Oligosarcus hepsetus, in the Santa Virgínia Unit of the Serra do Mar State Park. The Paraibuna and Grande rivers in the basin of the Paraíba do Sul River were sampled monthly from January to December 2004.
MLLA Botelho, LM Gomiero, FMS Braga
doaj   +1 more source

Stochastic Modelling of Daily Precipitation in Semi‐Arid Regions Using Markov Chains and Parametric Distributions

International Journal of Climatology, Volume 46, Issue 4, 30 March 2026.
This study applies stochastic rainfall models combining Markov Chains with gamma and mixed exponential distributions to a semi‐arid climate in Northeast Brazil. Model structures were evaluated using Bayesian Information Criterion (BIC), with maximum likelihood (MLM) for parameter estimation and cumulative distribution functions (CDFs) for validation ...
Gabriel Magno Cavalcante Calado, Mayke Feitosa Progênio, José Adalberto da Silva Filho, Ialy Rayane de Aguiar Costa, Severino Martins Neto, Artur Paiva Coutinho   +5 more
wiley   +1 more source

Birds from human-modified Atlantic Forest landscapes of the middle-lower Paraíba do Sul River basin, southeastern Brazil

The Atlantic Forest is a highly diverse and threatened ecosystem that has been significantly reduced and degraded by human activities. This study provides a comprehensive inventory of bird species inhabiting the human-modified Atlantic Forest landscapes ...
Alves, Sandro Leonardo, Alves,Sandro Leonardo, Sandro Leonardo Alves, Tavares,Gabriel, Gabriel Magalhães Tavares, Tavares, Gabriel Magalh\ue3es   +5 more
core   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, Volume 68, Issue 1, January 2026.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

O significado paleoambiental de depósitos de enconsta e de preenchimento de canal no município de Lapa (PR), no sul do segundo planalto paranaense [PDF]

, 2005
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em GeografiaA base dos estudos de caracterização paleoambiental desenvolvidos no sul do Segundo Planalto do Paraná, acerca dos ...
Camargo, Gisele
core  

Drivers of Habitat Selection by the Endangered Greater Caribbean Manatee in Coastal‐Marine Ecosystems

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 1, January 2026.
ABSTRACT Habitat selection is a fundamental aspect of animal movement and behaviour, involving strategies that influence population regulation, species interactions, community structure and the generation and preservation of biodiversity. The Greater Caribbean Manatee is a megaherbivorous aquatic mammal with high environmental plasticity, found in a ...
Iran C. Normande, Ana Carolina O. Meirelles, João C. G. Borges, Emma Deeks, Fernanda L. N. Attademo, Carolina N. Souza, Fábia O. Luna, Rafael A. Magris, Robson G. Santos   +8 more
wiley   +1 more source