Botany

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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Botanics

Farming with lunar soil

Plants cultivated in lunar soil grow slower and show more signs of stress than those grown in volcanic ash from Earth

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Paleontology

São Paulo was once covered by forest

São Paulo Metropolitan Area was once covered by vast forest of araucaria trees between 180,000 and 135,000 years ago

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BOTANY

Collection from the Dutch Brazil era includes illustrations of almost 200 plants

Among the flora of northeastern Brazil drawn in the seventeenth century are 35 exotic species originating from abroad, such as sunflowers

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biotechnology

Artificial neuron controls carnivorous plant

Researchers build artificial neuron with material compatible with biological tissues

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Obituary

Two lives dedicated to biodiversity

Thomas Lovejoy and Edward Wilson are unforgettable benchmarks with respect to the importance of nature and conservation

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Biodiversity

Wild species at the table

Wild varieties can enrich the diet and the decor

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Linguistics

A neglected threat to ethnobotany

Study shows that language extinction could lead to incalculable losses of medicinal knowledge

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