Many trees can generate their own fertilizer from nitrogen in the air. But it remains a mystery as to why they grow where they do – for example, few grow in the nitrogen-poor soils of temperate forests but many thrive … Continue reading
Journal Club
Highlighting recently published papers selected by Academy members
Category Archives: Environmental Sciences
Journal Club: Why do trees fix nitrogen in certain forests and not others? Model offers insights with big implications for the biosphere
Categories: Ecology | Environmental Sciences | Journal Club | Plant Biology
Tagged forests, model, nitrogen, pollution, trees
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Journal Club: Maya altered their environment significantly, for better or worse
The ancient Maya once had a civilization in the Americas that stretched over an area the size of Texas. Now scientists detail a number of key ways the Maya left behind a lasting impact on the environment during the so-called … Continue reading
Categories: Agriculture | Anthropology | Ecology | Environmental Sciences | Journal Club
Tagged climate change, ecosystem, environment, Maya, soil
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Journal Club: Epigenetic marks may reveal how the environment affected ancient societies
Ancient DNA can shed light on the past in myriad ways — for instance, genes and mutations may reveal important adaptations or physiological changes. But gene-regulating molecules latched onto the DNA, known as epigenetic marks, may also reveal important clues. … Continue reading
Categories: Anthropology | Environmental Sciences | Evolution | Genetics | Journal Club
Tagged ancient DNA, ancient humans, epigenetics, methylation
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New forests change land temperatures
Thirty years ago China began launching ambitious reforestation projects, aiming to undo some of the massive environmental damage caused by years of clear cutting. Each year the country adds around 2 million hectares of new trees, with no sign of … Continue reading
Porous aerosol particles could play a key role in the atmosphere
Microscopic droplets and particles make up aerosols in the air, clouds of haze, dust and soot that play vital roles in climate, absorbing or reflecting sunlight to help warm or cool the planet and serving as the seeds of precipitation. … Continue reading
Categories: Environmental Sciences
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Shrimp insecticide resistance varies wildly
No one would guess Hyalella azteca’s importance just by looking at it. Toxicologists use this unassuming, shrimp-like animal to test water quality. A body of water can be proclaimed healthy or toxic based on whether Hyalellas raised in a sample … Continue reading
Reconstructing the effects of fishing on the ecology of petrels
Reconstructing long-term ecological records is always a challenge, but for the open ocean the problem can be especially vexing because animal remains don’t last, and even if they did they’d be so deep as to be very difficult to access. … Continue reading
Categories: Ecology | Environmental Sciences
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Dams not cause of salmon decline, study suggests
In their first months at sea, salmon that have migrated through the eight dams of the Snake River are no more likely to perish than juveniles that traversed fewer dams, according to a new PNAS Early Edition paper. The finding … Continue reading
Categories: Ecology | Environmental Sciences
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Harvard Research Forest–Fertile soil for scientists and artists
[slideshow_deploy id=’673′] The Harvard Research Forest might not seem like the most obvious or attractive location for creating nature photography. The trees are wrapped in cables, shrubs enclosed in plastic, and unsightly pipes run from here to there. The forest, … Continue reading
Categories: Ecology | Environmental Sciences | Plant Biology | Visual Science
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