Botany

Climate change

Bacteria in Amazon tree trunks are capable of absorbing methane

Study by international group indicates that the phenomenon occurs in non-flooded areas

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Biodiversity

Hurricane decimates pollinating hummingbirds

Hurricane decimates population of hummingbirds that pollinate plants on Caribbean island

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Botany

Thornless cactus lives in a burrow

New species of cactus has no thorns and grows buried among quartz

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Ethics

Botanists say no to racism

Racist term to be eliminated from scientific names of plants, fungi, and algae

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Biodiversity

Almost 2,500 species face extinction in Brazil

Almost 2,500 species of animals and plants at risk of extinction in Brazil

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Pharmacology

The cannabinoid tree

Jamaican nettletree produces cannabinoids, like cannabis

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ECOLOGY

Thousands of plant species live on rocks

Thousands of plant species live on rocks

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Retrospect

Glass negatives depict science in the early twentieth century

Botanical Garden of Rio de Janeiro and other institutions preserve rare photographic collections

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ECOLOGY

Invasive species in mangroves of São Paulo

Fast-growing invasive plant spreading through mangroves in the Santos estuary

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EVOLUTION

Neighbors who lend their DNA

Plants are descendants of algae that acquired genes from fungi and bacteria, genes that became essential to the structure of plant cells

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Biodiversity

Colors found among white sandy islands of the Amazon

White sandy areas of the Amazon are home to unique plant communities

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Ethnobotany

Quilombola communities reveal the use of plants

Participatory research contributes to knowledge and university students develop cattail management plan

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Cover

Travel itinerary

The Tumucumaque Mountains National Park (PNMT) is isolated from urban areas, leaving the forest unaltered by human activity

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Cover

Amazonian Giants

Expedition investigates the scientific enigma of 80-meter-tall trees in Amapá

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Ecology

The roots of Amazonian biodiversity

By reversing the flow direction of the rivers, molding the surface, and blocking moisture from the Atlantic, the Andes made the forest a refuge and birthplace for new species of plants and animals

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Botany

An unusual bromeliad

New species of bromeliad with hairy leaves challenges perception of these plants

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ECOLOGY

Orchid uses trick to trap pollinators

Specialized structures guide flies through passages where the insect exchanges pollen between flowers

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Chemical

Method distinguishes chemical identities of coffees

New technique identifies the origin of Brazilian canephora coffees from the states that produce the most

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PALEONTOLOGY

The ice age in the brazilian pampas

Fossils such as a tibia of a giant sloth, which can measure 60 centimeters, catch the eye amongst the shells on Concheiros beach in the state of Rio Grande do Sul

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MEMORY

The grande dame of botany

An advisor to students even before she studied biology, Graziela Barroso described 132 new species of plants

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Flora

The sounds of wounded plants

Experiment shows that plants subjected to stress can emit ultrasonic sounds

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RESEARCH ITINERARIES

From physics to the environment

Marco Aurélio Nalon talks about the use of data geoprocessing to map native vegetation in the state of São Paulo

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Biology

The clock that regulates sunflowers

Circadian clock controls maturation of the hundreds of tiny flowers that form concentric circles on the heads of adult sunflowers

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Biodiversity

The climate, a driver of diversification

Regional rainfall patterns can be a decisive factor in plant diversification

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Ecology

Sawdust shows which tree species has been cut

Anti-illegal-logging technique identifies trees from sawdust using a microscope

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Ecology

Hidden life in rupestrian grasslands

Microorganisms help plants survive in the nutrient-poor soil of rupestrian grasslands

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PHOTOLAB

On top of Brazil

Serra do Imeri could be the birthplace of many animal and plant lineages from the Amazon and the Atlantic Forest

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Botany

Anti-fungus radiation in herbariums

Lonizing radiation used to eliminate fungi and insects from botanical samples

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ETHNOBOTANY

Unconventional food plants in the Brazilian diet

Studies propose strategies for increasing the consumption of unconventional food plants in Brazil

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Botanics

Queen of the water lilies

Victoria boliviana is the newest species of giant water lily to be recognized by science

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