Results 121 to 130 of about 129,063 (307)

Isotope hydrogeology of precipitation runoff and groundwater discharge as source waters for stream flow in the central AmazonMendeley data

Journal of Hydrology: Regional Studies
Study region: Central Amazonia, Brazil Study focus: We developed an a priori conceptual model of aquifer–stream connectivity across a forest–peri-urban–urban gradient (ZF2 = forest; Ducke Reserve = peri-urban forest; IFAM = urban forest).
Alexandre Souza Bastos, Didier Gastmans, Elaine Pires de Freitas, Alderlene Pimentel de Brito, Claudenilson Nogueira de Almeida, Lucas Vituri Santarosa, Márcio Luiz da Silva, Scot T. Martin, Sávio José Filgueiras Ferreira, Sergio Duvoisin Junior   +9 more
doaj   +1 more source

Morphology of Guard Hairs in Amazonian Marsupials: Intergeneric Variation, Habitat and Habit Association in a Phylogenetic Framework of the Order Didelphimorphia

Acta Zoologica, EarlyView.
ABSTRACT The cuticle and medulla of guard hairs exhibit distinct morphological patterns among mammalian species. To investigate this variability in marsupials from the Brazilian Amazon, we analysed guard hairs from nine Didelphimorphia species and incorporated data from an additional 25 didelphid species.
Matheus M. Bitencourt, Ana Cristina Mendes‐Oliveira, Gleomar F. Maschio, Maria Clara S. Ribeiro, Alexandra M. R. Bezerra   +4 more
wiley   +1 more source

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

Acta Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota, Ana Carla Soares da Silva, Lucas Jhones de Santana Neves, Carlos Eduardo Rocha Duarte Alencar, Fabrício Lopes Carvalho   +4 more
wiley   +1 more source

Preliminary data on nutrient release from decomposing leaf litter in a Neotropical rain forest

, 1977
The release of nutrients (N, P, K, Ca, Mg, Na) from decomposing leaves during the dry season in a neotropical seasonal evergreen rain forest near Manaus, State of Amazonas, Brasil was measured estimating the nutrient amounts in leaf litter in June and ...
Klinge, H.
core  

School achievement in the Brazilian rural Amazon: An analysis of the interaction among motor, cognitive and environmental factors

British Journal of Developmental Psychology, EarlyView.
Abstract A cross‐sectional study of 106 students (7–12 years) from a rural school in the Brazilian Amazon investigated the interaction among motor, cognitive and environmental factors on school achievement using network analysis. Students with good school performance were significantly older and showed superior global physical fitness, motor ...
Douglas Vieira, Cinthia Rodrigues Barros, Mabliny Thuany, Thayse Natacha Gomes   +3 more
wiley   +1 more source

Forest fragmentation in the Brazilian Amazon: Trends and conservation strategies

Perspectives in Ecology and Conservation
Tropical forests have experienced increasing fragmentation. The trajectory of forest fragmentation (sequence, permanence, and location) offers valuable insights for shaping environmental strategies.
Pedro Trejo, Claudia Azevedo-Ramos, Felipe Lenti   +2 more
doaj   +1 more source

A new species of Ribautiella (Myriapoda, Symphyla, Scolopendrellidae) from an Amazonian black-water inundation forest and notes on its natural history and ecology

, 1984
Ribautiella amazonica is described from a black-water inundation forest near Manaus, Brazil. The genus is recorded for the first time for the Americas. R. amazonica was predominantly collected from the forest soil, mainly between 7 and 14 cm depth and is
Adis, J., Scheller, U.
core  

Ecological research in the Large Scale Biosphere Atmosphere Experiment in Amazonia: A discussion of early results [PDF]

, 2004
The Large-scale Biosphere–Atmosphere Experiment in Amazonia (LBA) is a multinational, interdisciplinary research program led by Brazil. Ecological studies in LBA focus on how tropical forest conversion, regrowth, and selective logging influence carbon ...
Alencar, Ane, Asner, Gregory P, Braswell, Rob, Bustmante, Mercedes, da Rocha, Humberto, Davidson, Eric A, Dias, Pedro Silva, Feldpausch, Ted, Fernandes, Erick, Filho, Nicolau Priante, Goulden, M L, Kabat, Paval, Keller, Michael M, Kruijt, Bart, Luizao, Flavio, Markewitz, Daniel, Miller, Scott, Nobre, Antonio D, Nobre, Carlos, von Randow, Celso, Vourlitis, George   +20 more
core   +1 more source

Who prefers the dark? Daily activity of dung beetles from an Amazonian region

Ecological Entomology, EarlyView.
Daily activity patterns shape how dung beetle species coexist in Amazonian forests, revealing temporal niches that reduce competition and structure biodiversity. We compared species richness, abundance and assemblage composition of dung beetles sampled during day and night in a conserved terra‐firme forest in the Brazilian Amazon. Although richness and
Leonardo Vilas‐Bôas M. P. de Cerqueira, Cesar Murilo de Albuquerque Correa, Gabrielle Jorge, André Felipe de Araújo Lira, Júlia de Góis Silva, André Yves, Gleycon Silva, Sergio Santorelli Jr., Renato Portela Salomão   +8 more
wiley   +1 more source

Exploring the potential of field spectroscopy for tree species identification in different Amazonian forest ecosystems

Global Ecology and Conservation
Species identification in Amazonian forest inventories is challenging due to a shortage of taxonomists, high biodiversity, and morphological similarities leading to taxonomic errors. Full-range spectroscopy (350–2500 nm) is a promising tool for improving
Hilana Louise Hadlich, Jochen Schöngart, Florian Wittmann, Caroline C. Vasconcelos, Caroline L. Mallmann, Maíra L.G. Conde, Priscila Amaral de Sá, Layon O. Demarchi, Gisele Biem Mori, Maria T.F. Piedade, Flavia Machado Durgante   +10 more
doaj   +1 more source