Sentences with phrase «accumulate up the food chain»

Some pesticides persist in the environment for decades and accumulate up the food chain.

A half million tons of alkylphenols continue to spew out into the environment every year, so much so that now that they come down in the rain and then accumulate up the food chain.

«Dietary practices influence [our] exposure to pesticides, [toxic heavy] metals,... and industrial pollutants... A diet high in fish and [other] animal products, for example, results in greater exposure to [these pollutants] than does a [more] plant - based diet, because these compounds [may]... accumulate up the food chain.»

Not exact matches

While some populations migrate up and down the mountain streams, they are strictly aquatic feeding on underwater insects and salmon eggs and fry that can accumulate methylmercury and biomagnify it up the food chain.

Studying the interactions of industrial chemicals in air reveals that thousands may accumulate in fat as they travel up the food chain

This toxic compound accumulates up the aquatic food chain and is often concentrated at high levels in fish, shellfish and marine mammals — and ultimately in the people who eat them.

As microorganisms consume the methylmercury, the metal accumulates and migrates up the food chain; that is why the largest predator fish (sharks and swordfish, for example) typically have the highest concentrations.

The toxic form of the element is methylmercury, which is toxic to the nervous system and can move up the food chain as higher organisms accumulate the methylmercury present in their prey.

The methylmercury then travels up the food chain, ultimately accumulating in fish.

To see how much nitrogen the ants get from these microbes, Currie and colleagues measured the ants» levels of an isotope, nitrogen - 15, which accumulates as organisms move up the food chain.

In waterways, bacteria convert elemental mercury to methylmercury, an organic form that accumulates in food chains, increasing in concentration higher up the chains.

These chemicals naturally accumulate in colder conditions, and can work their way up the food chain.

After being absorbed by plankton, the mercury moves up the food chain: The plankton is eaten by small fish, which are then gobbled up by larger predators, each bigger animal accumulating more mercury with every meal.

Because krill are found in the deep, clean waters of the Antarctic, because they're at the bottom of the food chain and eat primarily phytoplankton and zooplankton, and because they have a short lifespan, they simply don't accumulate the heavy metals, pesticides and toxins that other fish that live farther up the food chain do.

Criteria Description Fish Toxicity Measure of the acute toxicity to fish (both saltwater and freshwater) Daphnia Toxicity Measure of the acute toxicity to Daphnia (invertebrate aquatic organisms) Algae Toxicity Measure of the acute toxicity to aquatic plants Persistence / Biodegradation Rate of degradation for a substance in the environment (air, soil, or water) Bioaccumulation Potential for a substance to accumulate in fatty tissue and magnify up the food chain Climatic relevance Measure of the impact a substance has on the climate (e.g., ozone depletion, global warming, etc.) Other Any additional characteristic (e.g., soil organism toxicity, WGK water classification, etc.) relevant to the overall evaluation but not included in the previous criteria 1.3.3 Material Class Criteria The following material classes are flagged due to the concern that at some point in their life cycle they may have negative impacts on human and environmental health.