Muchos estudios han demostrado el potencial del cambio climático global para mermar los suministros de alimentos. Pero estos estudios, en su mayor parte, ignoran las interacciones entre el aumento de temperatura y la contaminación del aire, especÃficamente la contaminación por ozono que se sabe que daña los cultivos.
Un nuevo estudio con la participación de investigadores del MIT demuestra que estas interacciones pueden ser muy significativas, lo que sugiere que las...
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Bumphead parrotfish are noisy feeders. They break off large branches of corals using their powerful beaks, grind them up in their bodies to extract nutrients, and expel the undigested material in large cloudy plumes of feces. Their voracious feeding is, however, not just a loud, messy affair. During the course of their feeding, bumphead parrotfish (Bolbometopon muricatum) also change the coral reef ecosystem in numerous ways, a new study published in Conservation Biology has found.
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Human forays deep underground, such as boreholes, mines and nuclear bomb tests, are leaving a mark on the planet's geology that will last for hundreds of millions of years, say scientists.
In a new report, published in the journal Anthropocene, they say we are altering Earth's rocks in a way that's unique in the planet's 4.6 billion-year history.
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Although the days of odd behavior among hat makers are a thing of the past, the dangers mercury poses to humans and the environment persist today.
Mercury is a naturally occurring element as well as a by-product of such distinctly human enterprises as burning coal and making cement. Estimates of "bioavailable" mercury—forms of the element that can be taken up by animals and humans—play an important role in everything from drafting an international treaty designed to protect humans and the environment from mercury emissions, to establishing public policies behind warnings about seafood consumption.
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Marine noise has been studied for it's impact on whales, dolphins and other marine animals. Might it also impact smaller creatures too? Eels, for example.
Despite their reputation as slippery customers, a new study has shown that eels are losing the fight to survive when faced with marine noise pollution such as that of passing ships.
Scientists from the Universities of Exeter and Bristol found that fish exposed to playback of ship noise lose crucial responses to predator threats. The study, published today in the journal Global Change Biology, found European eels were 50 per cent less likely to respond to an ambush from a predator, while those that did had 25 per cent slower reaction times. Those that were pursued by a predator were caught more than twice as quickly when exposed to the noise.
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