Skip to main content

Antarctic krill - Antarctic Wildlife Need Krill

Antarctic krill-Antarctic Wildlife Need Krill

Some key Antarctic wildlife species depend heavily on krill(Euphausia superba). Blue whales (Balaenoptera musculus) , crabeater (Lobodon carcinophagus) and leopard seals (Hydrurga leptonyx), as well as seabirds such as Emperor (Aptenodytes forsteri), rockhopper (Eudyptes chrysocome)and Adelie penguin (Pygoscelis adeliae), and three species of albatross are all primarily krill feeders. Of these species the blue whale and the black-browed albatross (Thalassarche melanophrys) are IUCN redlisted as Endangered and the rockhopper penguin is considered Vulnerable. Ensuring a consistent food source is crucial to their long term survival.

Climate Change Impacts Krill Populations-Antarctic krill

Climate change is having a negative impact on krill spawning and nursery areas. Krill density is directly correlated with the duration and extent of sea ice. Less sea ice for shorter periods of time mean less krill survive. If sea surface temperatures continue to rise, the situation will only worsen.

Commercial Uses for Krill-Antarctic krill

Krill are sought commercially for aquaculture for fish meal and Omega 3 fish oil. Salmon farms prefer using krill as they also impart their pink color to the muscle of the fish, making them more attractive to the buying public. Krill has become popular in the medical community to aid in post surgical healing and decrease cholesterol levels.

The Problem With the Krill Fishery-Antarctic krill

Much of the current krill fishery is conducted within the foraging ranges of the krill dependent marine mammal and seabird species Other than the whales, all these Antarctic creatures are land based so their foraging range, especially seabirds with young to feed, has to be limited or those young do not survive.

The Proposed Solution to Protect Krill Populations

The Antarctic and Southern Ocean Coalition(ASOC) has presented several papers before the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) which outline ways of ‘preventing or mimizing the risk of changes in the marine ecosystem. These papers can be found on the above ASOC website.

Suggestions for Managing the Krill Fishery Include:

 

  • Taking a highly precautionary approach to krill fishing which incorporates the uncertainties and optimizes data collection necessary for management.
  • Setting catch limits that will ensure enough krill is available in each area where the fishery operates, especially in critical marine mammal and seabird foraging and breeding areas
  • Regulating where the fisheries occur to minimize impact on Antarctic wildlife that is dependent on krill, including Scientific Observer programs to ensure compliance.
  • Identifying, documenting and assessing critical areas for krill productivity, as well as foraging and breeding areas of krill dependent species, for listing as Marine Protected Areas.

By initiating these proposals the organizations involved hope to prevent the type of fishery collapse that has happened in other areas.

Comments

Popular posts from this blog

Haunted Beardslee Castle Ghosts and Other Paranormal Activity

Built on haunted Mohawk Valley ground, Beardslee Castle , now a restaurant, has ghosts, poltergeist activity and other inexplicable events. When Augustus and Lavina Beardslee were on a European vacation in the early 1860s, she fell in love with the castles, especially an Irish one. He hired an architect to create a copy of that castle, then brought back the blueprints and Irish stone masons to build it in the Mohawk Valley on land that had already seen its share of tragedy. Also read How to Detect Paranormal Activity One-hundred years earlier, during the French and Indian War, the land housed a French homestead or fort, according to varying references, filled with ammunition. A band of AmerIndians slipped into the fort and accidentally blew it up when sparks from their torches ignited gun powder. Beardslee Castle was the scene of subsequent tragedies. The building and its grounds are haunted. Ghosts of Beardslee Castle People have sensed a strong AmerIndian presence on the grounds and ...

Aries horoscope love compatibility

HOROSCOPE LOVE COMPATIBILITY BETWEEN ARIES AND ARIES ARIES AND ARIES:   it may be an intense love affair, but neither of the 2 Aries is satisfied with not having the lead. The Aries female objectively tends to dominate. Yet, Aries male too. Therefore there will be a big opposition to be number one, at least during the first days of the relationship. In the bedroom too, both Aries will engage a fierce struggle to dominate the other. The relationship between two Aries may be good though if each has outside interests and/or a career separate from the other. As a matter of a fact, when their energies are not always in the same room and when each partner can satisfy the natural Aries’ will to dominate, the relationship between two Aries is intensely passionate and less destructive. HOROSCOPE LOVE COMPATIBILITY BETWEEN ARIES AND TAURUS ARIES AND TAURUS:   That’s a difficult match. Taurus likes to stay at home, is possessive and jealous, characteristics highly conflicting with Aries’...

Purebred Dogs - What, me resemble my dog?

Purebred Dogs - What, me resemble my dog?  More than meets the eye…. We’ve all seen those articles that infer that a dog owner begins to take on the outward appearance of their dog. I for one, feel I have little physically in common with my dog (a KBT). I’m sure you would agree this premise does not have enough documentation! Certainly I did not choose Maggie because she would resemble me! People own dogs for different reasons and in an earlier article I dealt with choosing your pet based on exercise time, training time, home alone time, grooming time, and physical attributes. Now I’d like to look at the less objective reasons for dog ownership. Are dog owners of the same breed similar? Do you fit the profile of other owners for your breed? Check How dogs and their Owner’s Personalities are Similar where significant research is posted on the similarities among owners of same breeds as compared to other dog breed owners. This site is worth a visit if you own, or if you are...