What are the ecological concerns of the Arctic Tundra?
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As is typical, loss of habitat is the greatest concern for AT as well as other special biomes.  For example, the polar bear has a yearly cycle in northern Manitoba and Ontario, in which it goes out onto the ice cover of the Hudson Bay in the fall to hunt, and returns in the winter- Recently, the freeze/thaw cycles have changed, and many of the bears are starving or being trapped on the ice.  Efforts are being made now to provide food and chase them off the early-thawing ice with helicopters, but obviously if the trend continues, it's likely a losing effort.  If the challenge is changing weather patterns, there isn't very much we can do, other than try to minimize the climate changes.  Other challenges include development of the area, especially for oil and coal exploration, which might seriously disrupt migration patterns of the large prey animals.  In general, though, the arctic tundra is not among the most threatened habitats, and so is not focused on as much as, for example, wetlands, rainforests, and coral reefs.
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pollution and devastation to the environment\n\nspecies invasion\n\nover consumption leading to extinction\n\nand, basically natural disasters
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Polar bears are getting there proverbial cold-asses whupped ! Stranded on ice-floes,mother and cubs are separated,the cubs become easy prey and are subject to starvation. Their population is decreasing fast. Also, I understand that there is,or would be an affect to global warming,..green-house gases...ozone layer...stuff like that  \nand us..\nPeace.
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There is a plan to tap the oil reserves in Alaska.  But I would ask you this... Do we really need more oil?  Why not find alternative energy sources?  What happens when all the oil runs out? (And it will).  Why do we have to ruin the pristine environment in Alaska with oil drilling and creating a pipeline that will ruin the habitat of many animals?\n\nBush is unfortunately a slave to big business and is not interested in "green" energy and moving the country away from oil, which is sad because we are ruining the earth's environment.  Whatever the Bush Administration says there is global warming and CO2 emissions, like those from cars, are in fact heating up the planet.  Hope you all have working bicycles because in the future with no oil that's what we will all be riding!
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Stop Smoking\nUse your feet/bicycles rather than driving and polluting the air and causing GLOBAL WARMING.\n\nGlobal Warming has already taken affect in Alaska.\n\nIt's amazing how this generation is considered the "Eco-Friendly Generation" when many of us drive gas-guzzling SUV's
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Tundra has low diversity (only 23 different species are plentiful there, 16 of which are in the same class)\n\nConiferous Forests and tropical regions have enormous diversity
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tundra--has permafrost --frozen solid in winter--but the surface thaws in warmer periods --with global warmimg the surface remains liquid more of the time --almost impossible to build highways or railroads on it because they sink.
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B.  Tropical rain Forest.\n\nTemperate is north and south of subtropical/tropical.\n\nBoreal forest is coniferous forests.\n\nTundra is what you'd find near the arctic circle.
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The Arctic and Antarctic are literally poles apart. While they share some characteristics, such as high latitude, cold and remoteness, they also exhibit significant differences. The Arctic is dominated by a large deep central ocean surrounded by land masses. The Antarctic is a large, partially ice-covered land mass surrounded by ocean. \n\nEnvironmental Differences: \nThe Arctic has trees but Antarctic does not\nAntarctica is a continent land mass but the Arctic is a sea with edges of other countries in the Arctic circle.. \nThe Arctic has indigenous people and the Antarctic doesn't. \nThe Arctic has tundra but not the Antarctic\n\nWeather differences: \nAntarctic has strong winds but the Arctic has mild winds. \nAntarctica is colder and windier than the Arctic\n\nAnimal and Plant Life differences: \nThe Arctic has polar bears and the Antarctic does not. \nThe Antarctic has penguins and the Arctic doesn't. \nThe Antarctic has no trees. \nThe Arctic has Tundra with rich plant life in Spring and Summer. \nAntarctic has algae but not the Arctic. \nAntarctica has mainly calm animals but the Arctic has some fierce ones\n\n\nHuman Activity Differences: \nThe Arctic has Eskimos and Antarctica does not. \nThe Arctic has igloos and Antarctica does not. \nLong ago, Laps and Eskimos used the northern polar region but nobody lived in the southern polar region. \nThere are towns in the Arctic but not in Antarctica - just research bases. \nAntarctica wasn`t found for a long time when the Arctic was already found. \nWhen the sea is free from the ice in summer in the Arctic the hunter goes after seals.
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Iceland is not really green. It has lots of areas where ice will not accumulate based on volcanic and geiser activity in those.
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There is more land area inthe south in Antarctica than in the north with the Arctic Ocean.
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A vast treeless plain in the arctic regions between the ice cap and the tree line
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Effects of deforestation.\n\nthis can be a local problem with global consequences.\n\ncan be biology and chemsitry (maybe physics as well, heat flows etc.)
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Pollution and DDT can cause poor environments.  All the oil and logging industries causes detriment to fishing of salmon for eagles.  As civilization expands their habitat shrinks.
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Yes.  I have lived in Ak and the minuscule amount of land required is far outdone by the MILLIONS of acreage that would go untouched.  Does anyone realize exactly how large Alaska is?  30 acres is a pinprick on almost any map.  Think of the revenue from jobs and the boost to the Alaskan economy!  It is a beautiful and wild place, but let's be realistic... using 30 acres would in no way jeopardize the balance of wildlife.
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these are some Mega threats that endanger the planet and some solutions\n\nover population,erosian,over pumping of carbon aquifiers(deep wells)\ndesertification,rising seas,land loss,deforrestation.excess carbon emissions,mass extinction of species and global warming.\n\nDEFORRESTATION if it continues ,is that we could end up looking like Mars.Without an atmosphere ,without water,without air,with out life\n\nthe forrests make most of the water that we can drink or use for plant growth(sweet water) \nsome is condensed from the sea but that reaches only the coastel aereas .\nthe bulk ,comes from the forests ,and the rivers come from the rainfall which comes from the trees ,\nand the trees with precipitation,feed the rivers when it is not raining and keep them running all year round.\n\nIf we kill all the trees,we kill the rivers .we kill the rain. we kill us.\nthe trees also absorb the heat in the day and heat up the place in the night ,so they keep the temperature confertable to live in.\n\nin the dessert the nights are freezing cold and during the days you burn up\n\nCARBON MONOXIDE\nthe trees absorb carbon emisions ,which is poison to us and they produce oxygen which we need to breathe.\n\nso in short the trees produce the air that we need to breathe.\nthey also produce wood which is usefull and a wide range of food such as fruits\n\ndeforestation must be stopped before desertification goes out of control and consumes the planet.\n\nDESERTIFICATION\nthe sahara is growing by 7 kilometres every day.\ntwo major desserts in northern china are growing together making one giant dessert and,causing dust storms so making thousands of people refugeese\n\nthe trees evaporate a mist which ,which protects us from the strong rays of the sun .\n\nthe planet is drying out at an alarming rate.\n\nin the days of the dinasaurs this planet was under an aquiferus manta ,a mist that covered the entire earth ,and there were no desserts .\nCount how many there are today,and all of them are as a result of mans actions.\nthe sahara used to be forrests\narabia ,irak ,iran used to be fertile lands in biblical times\nGhengas Kahn burned all the forrests here and filled the well with water and so turning vast lands into dessert.\n\nBad agricultural practises is turning vast teritories into desserts ,because of over grazing and the exessive pumping of carbon aquifiers ,the surface aquifiers already having been depleted.\nAnd the use of fertilisers and heavy machinery that compacts the ground which raises the salt in the soil.\nModern agriculture today is doing the same as ghengas kahn but in much bigger territories.\n\nAnd because agricultural lands are lost, farmers are forced to cultivate highly erodable lands, to keep up with the growing demand for food.an extra 70 million people each year and this is increasing\nthe world population has doubled in the last 50 years the fasted increase ever since the first homo sapian.\n\nEROSION\nsoil erosion is almost always as a result of human intervention.\nthe trees are cut down and these trees existed to provide a cover against the rays of the sun which now dries out the soil ,and the wind can than easily blow away the dust that is formed ,------this is wind erosian\n\nbecause the trees are no longer there, whose roots bound the soil together ,and because their canapies of foilidge no longer exist the rain now has easy acces to the unprotected ,now dry surface and the rain waters wash away the top soils ,------this is water erosian\n\nfarmers plow large plots of land to plant maize or wheat or what ever and as happened in the 20s in the USA,they plowed in straight lines.when the winds came they blew alonfg the straight lines and picking up speed removed millions of tons of top soil(wind erosian) turning vast teritories into dessert deprived of arable soil\n\ntoday the farmers plow in circles and curves to prevent this building up of speed by the wind,\n\nbut still vast sections of land are exposed to the sun whi
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It seems the Tundra area of the polar region .