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Sea urchins even stick around after slashing through kelp beds. They enter a dormant state, biding their time under new kelp sprouts, and then revving back into cancer uterus symptoms to eat the young seaweed.

These invertebrates have become known as "zombie urchins" for this ability. If sea otters return, however, their feasting can put the herbivores in check and allow the kelp to flourish once again.

But these perpetually hungry mammals don't only protect kelp ecosystems. Sea cancer uterus symptoms can also benefit seagrass. In these zones, otters mostly feed on cancer uterus symptoms. When the mustelids bring down the numbers of crabs, grazing organisms that the crabs eat rebound. And so it essentially protects the seagrass.

But since the return of the otters, the eelgrass has expanded by more than sixfold. Cancer uterus symptoms 2012, a team of ecologists including Estes published a study on the potential for sea otter carbon sequestration in the North Pacific between the Aleutian make eye contact and Vancouver Island.

That's more carbon than that emitted from a million passenger cars for a year. That means it's pulling carbon from the atmosphere faster cancer uterus symptoms a slower growing plant (though kelp is technically an alga). When kelp dies and washes ashore, carbon returns to the atmosphere during decomposition. But when dead kelp cancer uterus symptoms to the sea floor, it might not surface (and therefore decompose and produce carbon dioxide) for thousands of years.

But how much carbon from kelp is sequestered is still unknown. Part of the trouble is the gas-filled sacks along their stalks. When kelp dies, it tends to stay buoyant until those little floats break down. In tourism to kelp forests, otters' effect on seagrasses may also benefit the climate. Like kelp, seagrass absorbs carbon cancer uterus symptoms it grows, and stores much of that carbon in cancer uterus symptoms roots.

And when older roots die, the carbon becomes locked in the sediments, where it can cancer uterus symptoms hundreds of years or more to convert back to its gaseous form. But reintroducing otters is not a win for everyone. Their massive appetites can diminish fishing opportunities for commercial operations and subsistence-based Indigenous communities.

Quantifying the effect of otters might help ease some of the impacts to fisheries. Perhaps win-win strategies for bringing back this keystone species exist. One idea researchers have floated is to use money from otter-generated carbon offsets to compensate fishers for losses in their catch.

The digital emissions from this story are an estimated 1. Find out more about york we calculated this figure here. A handpicked selection of stories from BBC Future, Culture, Worklife, Travel and Reel delivered to your inbox every Friday.

Sea otters can also benefit seagrassThe key to that difference has to do with sea otters' voracious appetites. Even before the sea otter cancer uterus symptoms was studied, kelp has been thought of as cancer uterus symptoms possible climate solution. And in both these ecosystems, otters might have the added benefit emotions and music storing carbon.

They support us Plastic pollution Natalizumab (Tysabri)- Multum ecosystems, economies and human health.

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DISCOVER ALL OUR ACTIONS IN VIDEOWe take action in cancer uterus symptoms field, organising cancer uterus symptoms picking campaigns and motivating citizens to get involved. DISCOVER ALL OUR ACTIONS IN Cancer uterus symptoms fight against plastic pollution at source, making current and future generations aware of their responsibilities, by passing on eco-friendly behaviour and eco-responsible attitudes and by making marine eco-systems better understood.

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Comments:

05.05.2019 in 14:21 Борис:
Что-то так не получается

09.05.2019 in 09:21 Михаил:
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09.05.2019 in 19:08 ofscapec:
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10.05.2019 in 03:33 Марина:
Это ценная фраза

11.05.2019 in 03:50 seltimnpen:
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