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Wednesday, May 4, 2011

Have Bald Eagles been affected by the mangrove depletion?

If the bald eagle lives in a mangrove and the mangrove is getting cut down, then probably yes! The eagle likes to make its nest up high, where it can perch and hunt. So imagine that you lived in a tree house and someone cut your tree down to build a house. Then you move to another tree but they cut that house down to build a table. And you keep moving from tree to tree as they keep on getting cut down. Eventually, there aren't going to be any trees left for you to live in. That's the situation with the bald eagle. And why would you want to ruin the home of such a majestic bird?

http://freeman.cz.cc/blog/2010/02/mangrove-swamps/

bald-eagle-bring-nesting-material-by-aesthetic-photos-05.jpg

http://leesbirdblog.files.wordpress.com/2008/08/bald-eagle-bring-nesting-material-by-aesthetic-photos-05.jpg?w=300&h=200

Has mangrove depletion caused problems?

If you cut down mangroves, then you will cause some problems. Like I said in one of my earlier  posts, mangroves are what protect the uplands from wind, storms, rains, and floods. They provide food for many tiny animals, and 75% of game fish and 90% of commercial species in South Florida rely on mangroves for shelter. They also absorb nutrients into their roots, so if you take out mangroves you are causing a lot more problems than you think.

http://www3.leegov.com/dcd/Environmental/Mangroves.htm
http://184.106.235.187/q/how-do-mangroves-help-the-ecosystem.html

15969-mangrove_froest.jpg

http://www.irrawaddy.org/articlefiles/15969-mangrove_froest.jpg

Tuesday, May 3, 2011

What adaptations does the Bald Eagle have?

The Bald Eagle has several adaptations that help it survive in the wild. One is that it can see four to eight times better than any human, which helps it see prey from further away. Another is that it has an overhang above its eyes which helps shield it from the sun while hunting. It also has little bumps on its feet to help it grasp fish while flying. Along with that, the most obvious one is that its curved, sharp beak helps it dig into food and tear the meat. And finally, during the winter its feathers fluff up to keep the eagle warm, then in the spring and summer they become normal, and in the fall they start to fluff again.

http://www.blueplanetbiomes.org/bald_eagle_deciduous.htm
http://wiki.answers.com/Q/What_adaptations_does_the_bald_eagle_have

Why have mangroves depleted?

The reasons mangroves have been disappearing so much may sound ridiculous, but they can be very convincing. It could be simply for urbanization, so that we could have more tourists and more people living here. It could be for agricultural purposes, so they can make the landscape the way we want it. Or maybe it could be because of aqua-cultural purposes because the people want a new pond by the new condo. Mangroves can also disappear because they are being used for timber, charcoal, or fuel, and also to prevent freshwater and tidal flow. Oil pollution, or just pollution in general, can also make mangroves die. And these are just some of the human causes. There are also invasive species and climate change that kill mangroves, which is why we need to double our efforts to save them, before they are all gone.

http://ocw.unu.edu/international-network-on-water-environment-and-health/unu-inweh-course-1-mangroves/Degradation-and-destruction-of-mangroves.pdf

Monday, May 2, 2011

Bald Eagle Taxonomy

Hm... I wonder what the bald eagle taxonomy is?
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Falconiformes
Family: Accipitridae
Genus: Haliaeetus
Species: Haliaeetus leucocephalus

http://www.newworldencyclopedia.org/entry/Bald_eagle
http://sitemaker.umich.edu/section9group7/files/alligator_and_mangrove.jpgalligator_and_mangrove.jpg

How have mangroves changed?

You may ask yourself: how have the mangroves changed? I mean, can they really change that much? The answer is, yes they can. Over the past 100 years, Tampa Bay has lost over 44% of their costal wetlands acreage, which includes mangroves and salt marshes. Lake Worth, near West Palm Beach, has had an 87% decrease in its mangrove acreage and has just 276 acres left. The Indian River has lost 86% of its mangrove areas to fisheries since the 1940's, and now laws have been enforced to make sure the mangroves are protected. But doesn't looking at these numbers make you think how much better the world would be if those mangroves were still here? We might lose a lot of buildings, but how can you compare a city to the open environment? Think of ideas you can use to make a change and use them.
http://www.floridaplants.com/horticulture/mangrove.htm