Results 11 to 20 of about 149,234 (198)

Can a Top Predator Persist After One of the World's Largest Mining Dam Failures? Occupancy Dynamics of the Neotropical Otter in Brazil's Paraopeba River. [PDF]

open access: yesEcol Evol
We evaluated the effects of the 2019 Brumadinho tailings‐dam collapse on neotropical otters (Lontra longicaudis) in Brazil's Paraopeba river using multi‐season occupancy models. Six years post‐collapse, otters showed high occupancy across impacted reaches.
Massara RL   +10 more
europepmc   +2 more sources

The Complete Mitogenome of Amazonian Hyphessobrycon heterorhabdus (Characiformes: Characidae) as a Valuable Resource for Phylogenetic Analyses of Characidae

open access: yesFishes, 2023
Hyphessobrycon heterorhabdus (Ulrey, 1894), popularly known as ‘Flag Tetra’ in English speaking countries, belongs to the genus Hyphessobrycon of the family Characidae, and is widely present in the eastern Amazon basin.
Luciano Fogaça de Assis Montag   +16 more
doaj   +1 more source

Unveiling the Dietary Selection of Lowland Tapirs (<i>Tapirus terrestris</i>) in a Tropical Rainforest. [PDF]

open access: yesEcol Evol
Large terrestrial herbivores, such as lowland tapirs (Tapirus terrestris) present many dietary ecological roles in their habitat. In this article, we investigated the diet of lowland tapirs in a tropical rainforest combining different techniques such as DNA metabarcoding, fieldwork, and plant functional traits.
Lautenschlager L   +9 more
europepmc   +2 more sources

Fine-tuning the buzz: comparing visitation frequency and pollination effectiveness in plant-pollinator networks. [PDF]

open access: yesNew Phytol
Summary Ecological network approaches have advanced our understanding of how species interactions influence community and evolutionary dynamics. However, a key limitation is that most network analyses rely solely on visitation data, often overlooking functional aspects of interactions.
Valadão-Mendes LB   +4 more
europepmc   +2 more sources

Use of Molecular Genetic Methods to Reduce the Risk of Incorrect Identification of Fish Strains in Brazilian Aquaculture

open access: yesFrontiers in Genetics, 2021
The identification of fish species using traditional methods is generally based only on morphological characteristics and these methods are currently under review.
Luana Maria Deoclécio da Silva   +5 more
doaj   +1 more source

Contrasting nation-wide citizen science and expert collected data on hummingbird–plant interactions

open access: yesPerspectives in Ecology and Conservation, 2023
Citizen science has the potential to increase the efficiency of scientific data collection. However, such initiatives often focus on unique taxa for each record, not necessarily involving interspecific interactions.
Camila Bosenbecker   +5 more
doaj   +1 more source

STATUS GENÉTICO DE ZEPHYRANTHES FLAVISSIMA: MODERADA A BAIXA DIVERSIDADE GENÉTICA SINALIZAM PARA A NECESSIDADE DE ESTRATÉGIAS DE CONSERVAÇÃO DA ESPÉCIE

open access: yesAnais do II Congresso Brasileiro de Ciências Biológicas On-line, 2021
Introdução: As espécies do gênero Zephyranthes (Amaryllidaceae), popularmente conhecidas como “lírios da chuva”, apresentam ampla utilização na ornamentação, bem como na medicina popular, devido a presença de compostos químicos que possuem atividade ...
Sara Mataroli de Godoy   +4 more
semanticscholar   +1 more source

PORTULACA HATSCHBACHII: BAIXA DIVERSIDADE GENÉTICA REFORÇA A NECESSIDADE DE CONSERVAÇÃO DESSA ESPÉCIE HERBÁCEA CATEGORIZADA COMO “EM PERIGO” DE EXTINÇÃO

open access: yesAnais do II Congresso Brasileiro de Ciências Biológicas On-line, 2021
Introdução: O gênero Portulaca (Portulacaceae), caracterizado por ervas suculentas, é ressaltado por suas propriedades terapêuticas, importância em áreas agrícolas e paisagismos.
Daniele Cassiano Feliciano   +4 more
semanticscholar   +1 more source

VARIAÇÃO GENÉTICA ENTRE E DENTRO DE POPULAÇÕES DE Balfourodendron riedelianum (Engler) Engler PARA CONSERVAÇÃO EX SITU

open access: yesRevista do Instituto Florestal, 2000
Com o objetivo da conservação genética ex situ de uma espécie arbórea tropical em risco de extinção, o Instituto Florestal de São Paulo implantou, no ano de 1984, um ensaio de famílias e de populações de Balfourodendron riedelianum em dois locais ...
Ana Cristina Machado de Franco Siqueira   +3 more
doaj   +1 more source

Risk of local extinction and genetic diversity of Melipona quadrifasciata (Apidae: Meliponini) in a possible Northeastern limit of its distribution in Brazil

open access: yesSociobiology, 2016
Rapid loss of genetic diversity among eusocial bees, and extinction of their local population has become a major world concern. Populations of M. quadrifasciata have increasingly declined due to predatory extractivism and destruction of their habitat ...
Edilson D Araújo   +8 more
doaj   +1 more source

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