Selasa, 29 Maret 2011

Species Endangerment

Endangered species, we often hear that words and seem it familiar to us. Yes, endangered species is a population of organism especially animals which is at risk of becoming extinct. International union for conservation of nature (IUCN) has calculated and has a red list of threatened species which contain data about the criteria of endangered species. Many factors have threatened many species in the world especially human. Many of their activities can affect the amount of species in the world. But many people didn't notice this big problem. This problem become big and dangerous because it have many dangerous effect for our animals, environment and human. These are several factors that cause endangered species.

First, habitat destruction. This problem can caused by nature, but nature only change animals and plants habitat in slow pace. Not in human, human change species habitat in fast pace, this result in species endangerment. Their habitats are destroyed for human importance. Habitat is a place where animals need to live in but human destroyed it. Human usually destroyed several place and change it into something for their importance like a tropical forest, in there live many animals such as birds, owls, ferrets, cats, dogs, insects and many more. Then, human change the forest into building, road, city, field, etc. Nowadays, many forest had destroyed, burned, cut and cleared. All for human importance. Not only forest habitat, but also sea, wetlands, prairie and mountain have received impact from human activities.

Second, Overhunting. This problem is make by human. Human are need the benefit from animals, but human often hunt animals until the species only remains in small amount even to extinction of the species. For example Dodo bird and thylacine(tasmanian tiger), both of them are hunted until no more species remains. Both of them are extinct due to the overhunting. The overhunting that happens in this period is Whaling and animal trade, whaling is hunting whale for its meats and oils. But whale hunter usually hunt whale until species of whales become extremely low in sizes. Fortunately, a international moratorium has abide whaling. I think whale hunters still whaling this time although the moratorium abide it.

Third, Pollution. Pollution come from industrial, domestical or agricultural wastes in form of chemical wastes like Pesticides, too many carbon dioxide, mercury wastes, etc. These wastes will affect environment and then causes habitat destruction which destroys wildlife. There are direct impact to the animals too, if human litter on the land or sea animals will eat those wastes then died. In food chain, if one organism eat an poisoned food, then the predator of that food eater will be poisoned too. At last it cause death and species endangerment.

Fourth, Natural disasters. Several natural disaster such as volcano eruption, tsunami and many more can cause endangerment too. For disaster it will not affected much on widespread species because if animals in one region get suffered from disasters, other same animal in other region won't feel it. But, it will affected much on endemic species, species that only exist in a region and it's not exist in other region. If a region with endemic species get natural disasters, many endemic species will feel and dead, it will decreased the amount of endemic species and become endangered.

Fifth, Introduced species. Human often introduced species intentionally or accidentally to an area. Introduced species is place a species to another area where the introduced species haven't exist. This is not a small problem, it's big. The Impact is come from the predation and competition with the new species. For example, a large fish is put into a pond while the other fishes in the pond are small and weak. So, the large fish will compete with the small fish to eat food and usually the small fish will lose and get a little food or nothing. Beside that, there will be a chance that the large fish eat the small fish. From time to time, the large fish will dominated the pond and the small fishes will get endangered. From the example, we get that introduced species will 'Invade' native species and get the native species to endangerment.

That's the factors of endangerment from human and nature. The impact to other animals will be seen in food chain. If one animal in food chain become endangered or extinct the population of the predator will decreased. For example, a bird is eated by falcon, if the bird population become endangered, the falcon population will decreased too if the falcon often eat on the bird.

Human will get very bad impact from endangerment. Human get benefits from wildlife and now many of sources of those benefits get endangered. For example, whaling cause whale endangerment, people get meat and oil from whale. If whale population still decrease, people cannot get more meat and oil. Same as crop plants, the endangerment factors will cause plant pollinators, who distribute seeds become endangered by habitat destruction affect the crops, crop plants that everyday are pollinated by pollinators like bee and fruit bats will reduced seeds distributed by pollinators and cause the crop plant itself become endangered.

So, what can we do with these? several factors are inevitable so we can cope the endangerment. Many people and organizations have cope endangerment. Organizations like greenpeace has cope. Other people, to cope this problem has protect endangered animals from overhunting and introduced species and repair the destroyed habitat for endangered animals. They make In-situ and Ex-situ conservation. I'm sure you can do this too.

Kamis, 24 Maret 2011

Garbage Patch And Marine Debris - One Result Of Human's Waste

We know that we, humans are always use plastics in their lives. Always and always, but our earth have difficulties to digest plastics. So, after using a plastics human will throw the plastics to trash bin. Then, it will be throw again to the sea with full of animals and other organism. Due to the large using of plastics all over the world and many of them are throw to the sea, the plastics are moved by the sea's current.

All of the trashes are moved by a current named North pacific gyre, it located in the northern of pacific ocean. This current has clockwise circular pattern. Many plastics and other garbage that trapped in the current have form a wide area consist of garbage.

Those garbage have form an garbage island called Great pacific garbage patch. People don't see this island because most sailor and fisherman are avoid this current due to the wind and large fish. This is very dangerous because in the north pacific gyre many organism lived there and their lives is disturbed by this garbage also cause death.

There are about 5 oceanic gyres in the world, so not only great pacific garbage patch exist, but also North atlantic garbage patch and indian garbage patch, and Great pacific garbage patch is the largest of all. Not only on the sea, but also on the beach. Both sea and beach have a large ecosystem that contains many organism. There are many garbage that floated on the sea, like Plastic bag, balloons,rope, cans, Styrofoam, fishing nets, ship debris and many more. But, Plastic constitutes 90% of all trashes floating on the ocean. The amount is about hundred millions of plastics on the ocean.
Sources of the garbage
Where the garbages come from? The garbage comes from many sources like Ships. Ship usually bring cargo, they bring it to distributes many things like toys to many destinations. On their way, usually storms come and destroy the ship or the cargo. If destroyed, the remains of ship and cargo will float on the ocean until it washed ashore in a beach. But, the remains can also float and flow by the ocean gyre then form garbage patch. But, this is for accident, accident can come everywhere and everytime. Beside accidentally pollution, there are human-made garbage that throw to the sea. This is the worst sour
ces,it's not accident. The unused garbages are always dump in the sea.

The Impact of garbage dump
Some people thinks that sea is the best place to dump garbage, because it won't reduce the usage of land and the garbage are not involved in their life, but what about the wildlife, they are all suffered from garbage that they mistaken it as a food.
For example a plastics, birds usually mistaken plastics as a food, so they give their son plastics to eat and for theirselves. Later, The plastics block the passage of the food and the bird can die due to the starvation and infection in plastics, other animal will do this too. Beside plastic, Ghost net, an abandoned fishing net that people leave it and float on the sea can be dangerous too especially for big animals like turtles and big fish.

Ghost net can make animal cannot move. They
will trapped in net, get difficulties to eat, and later cause starvation and suffocation.
The impact in environment is will make a place messy and dirty. It can attract insect and bring bad bacteria from the garbage and enter our environment and spread diseases. For humans, the danger is the disease, we can get sick from insec t that bring
disease from garbage. Beside that, we can get poisoned from the food we eat. The food that come from marine life such as fish and prawn have eat plast ics will get poisoned from plastics then we eat from those poisoned animal.
The removal and prevent of debris

The large amount of garbage can cause dangero us effects so many people try to remove the garbage and prevent the garbage dump. The eff orts are like remove garbage from the beach, pulverization and a great way is to recycle the plastic. We can use plastic garbage and recycle it to a benefical things such as toys, bottle and many useful things. For example, people make a plastic craft named plastiki. This craft can be used travel the sea. you can do it too, you can change the plastics into pencil case, vase, and other.
To prevent the garbage dump, people are star t to reduce the usage of plastics. Can you reduce it too?

For the great pacific garbage patch, some people have a project named project kaisei (Ocean planet in japanese). Their goal is to clean up th e pacific garbage patch.

You have see the photos? the photos indicates that humans have do wicked things that affected the world

There are so many dangers from garbage and we should remove and prevent the garbage dump for the sake of our environment or do you want a garbage island like great pacific garbage patch become larger? i think you will answer "No". So, keep our environment clean and healthy.

Sabtu, 05 Maret 2011

Our Beautiful Earth

Welcome! This blog will tell about many things about our Earth. But, now you will see the wondeful scenery on our Wonderful Earth first. See!!!

We live here
A Great Blue planet, in this blue ball you can see many great things such as sceneries like this:







These are just a little of many many beautiful places on this Earth. We should feel lucky, live in a beautiful blue ball-shape planet with so many interesting and great things inside. You can also relax yourself by seeing beautiful Earth.

These sceneries just part 1, my post like this will continue to other parts. So, wait for it.