Ecology

ETHOLOGY

Morpho butterflies seem to disappear thanks to iridescent blue color

The coloration, present only on the upper surface of the wings, causes a flash that confuses predators, as well as biologists seeking to understand how they became so bright

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ECOLOGY

Research identifies priority areas for restoring native vegetation in Brazil

Regenerating 30% of the 76 million hectares mapped across six biomes could increase habitat availability for more than 11,000 animal and plant species, as well as helping to mitigate climate change

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EVOLUTION

The ultra-black wasps of the Caatinga

Newly identified species exhibit rare evolutionary mechanism that allows them to maintain a body temperature lower than the surrounding environment

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Biodiversity

The cries of snakes

Female snakes emit high-pitched sounds when threatened

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ECOLOGY

Rodents in the Pantanal use holes dug by armadillos as temporary shelter

Other animals, such as ocelots and foxes, were observed approaching the dens but not entering

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ZOOLOGY

GPS mapping reveals the role of forests in jaguar conservation

Study included 54 jaguars fitted with tracking collars in 12 locations across South America

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CHRONOBIOLOGY

Biological clock of cyanobacteria, which live for one day, predicts the arrival of winter

Result surprises scientists, leading them to rethink the mechanisms and evolutionary importance of adjusting to natural rhythms

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Ecology

Helping Charlotte swim

Sea turtle given weighted harness to correct syndrome that caused swimming problems

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ZOOLOGY

Temperature affects sensory system development in trout

Temperature affects sensory system development in trout

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BOTANY

Plants use pollen bombs to compete for space on hummingbird beaks

Success in competition between male gametes can increase chance of reproduction

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ENVIRONMENT

Aquifer depletion threatens forests and rivers

Over-exploitation and climate change are damaging environments that depend on underground water reserves

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ECOLOGY

Drought and wildfires reduce forest biodiversity

Although the populations of some plant and animal species are able to recover when rains return, the effects of drought and wildfires can last years

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Entomology

Styrofoam-eating beetles

Kenyan beetle larvae can digest Styrofoam as part of a balanced diet

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Agriculture

New institute set to tackle citrus diseases

Research center aims to tackle diseases such as greening

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Ecology

Soil and vegetation care restores the vitality of the Caatinga

Experiments suggest strategies for recovering native vegetation and increasing agricultural production in the semiarid Northeast

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Environment

Belo Monte Dam and drought cause the Volta Grande do Xingu region to dry up

Monitoring indicates that low water flow is preventing fish from reproducing and impeding the way of life of Indigenous people and riverside communities

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Interview

Ruy Caldas: From Grande sertão to plant biochemistry

At 84, the agronomist who cultivated research teams and programs across Brazilian universities looks back on his career

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Climate changes

Study finds 25 of Earth’s 35 vital signs are in critical condition

Records continue to be broken for parameters such as the planet's temperature, atmospheric CO2 concentration, and biodiversity loss

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Botany

Gourmet vanilla only for agoutis

Vanilla chamissonis seeds, indigestible by omnivores, are consumed only by agoutis

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Global Warming

The Amazon is not uniformly affected by drought

The Amazon is not uniformly affected by drought

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Oceanography

Threat to Brazilian coral puts fish at risk

Despite being resistant to environmental changes, species are being eliminated

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Paleontology

When and where were the first animals in South America?

Western Mato Grosso do Sul, eastern Santa Catarina, and northern Minas Gerais were home to complex organisms between 575 million and 530 million years ago

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Evolution

The eardrum may have saved reptiles from mass extinction

The tympanic membrane in the inner ear emerged in a common ancestor of lizards, crocodiles, alligators, snakes, turtles, and birds 250 million years ago

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Botany

Newly discovered but already endangered

New plant species found in Espírito Santo in 2023 already threatened with extinction

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Ecology

New map reveals diversity of the Caatinga biome

New map reveals diversity of the Caatinga biome

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Environment

Good cultivation practices can reduce carbon emissions in the field

Good cultivation practices can reduce carbon emissions in the field

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Crop Science

New cultivation techniques seek to curb the spread of citrus disease

Greening was one of the main causes of a 25% drop in yield in the last harvest

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Medicine

Aggressive variant of the Oropouche virus circulating in Brazil

New strain multiplies rapidly and could facilitate transmission

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Interview

Emmanuel Tourinho: The rainforest won’t survive without traditional populations

According to the dean of UFPA, social degradation in the Amazon also threatens to destroy the biome

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Interview

Adalberto Val: A fascination for the fish of the Amazon

The biologist from São Paulo discovered the adaptation mechanisms of the region's species to variations in oxygen and temperature in the rivers

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