Drive brand awareness and leads with content marketing.
Sign up with Facebook
Sign up with Twitter
Sign up with Linkedin
I don't have a Facebook, a Twitter or a LinkedIn account
Start a free trial of Scoop.it Business
Part I, island biogeography in a World Regional context...click here to watch part II, why island biogeography matters in places that aren't on islands. All links archived at: http://geographyeducation.org/2013/12/06/island-biogeography/
Island biogeography operates on different principles than we see on the continents. Soem extraordinary creatures such as the komodo dragon and thylacine can be found in isolated places removed interactions with more generalist species. Alfred Russel Wallace made some extraordinary discoveries combining biology and spatial thinking.
Island biogeography is pertinent today since habitat fragmentation (from urbanization and argicultural land uses) has rendered 'islands' out of the wilderness that isn't being used by humanity. Some animals such as the cougar are locally extinct from their historic ranges (extirpation).
Tags: biogeography, environment, ecology, Australia, Oceania.
Are you sure you want to delete this scoop?
... Part I, island biogeography in a World Regional context..
....Part II, why island biogeography matters in places that aren't on islands.
I really could see the idea of island biogeography when looking at islands and the ocean and how they species could develop that way. Until I saw this video I do not think I could have made that cross over to continents. Now I do see it. If we build something across an open plain it will effect how species roam the area. I remeber seeing pictures of the Alaskan pipeline raised in certain area and could not until now figure out why. Now I know it was done, at least partly for, environmental reasons. So animals could still travel under it in order to move about. If not Alaska would have been cut in half and prevented the animals form moving across the pipeline. So as nature effected the developement of species with the rising and falling of ocean levels and islands, human effect the developmentof species with roads, farms and cities to name just a few.
1) What is a hotspot? A volcanic "hotspot" is an area in the upper mantle from which heat rises in a plume from deep in the Earth. High heat and lower pressure at the base of the mantle facilitates melting of the rock. This melt, called magma, rises through cracks to the surface and forms volcanoes. As the tectonic plate moves over the stationary hot spot, the volcanoes are rafted away and new ones form in their place.
Why are the Hawaiian Islands a linear formation if there are not plate boundaries in that region? Why are the islands seemingly arranged from largest to smallest? The answers lie in the physical geography of 'hot spots.' After this introductory video, you can learn more about the geologic life cycle of a hot spot volcanic island in this companion video.
Tags: Oceania, physical, geomorphology, landforms.
It is a good video which explain how can be formed a group of islands under a hot spot. This example is valid not only for Hawaii but for the Canary Islands.
Never really understood how island chains were made until now. As the plate moves the iland is no longer growing and it begins to erode as a new island is created for the hotspot doesn't move the plate does. That explains why the island of Hawaii is the largest island in the Hawaiian Island Chain..it is the yourgest island and the one the is currently under the hotspot...until it moves along the plate..which I do not believe will be in anyones life time. It also helps explain how atolls were formed. The plate moved so the island was no longer growing and though erosion of hundreds of thousands of years the center of the large island is gone while the ring is being supported by a coral reef. Great site that really makes it easy to understand.
New demographic study in California reveals nation’s changing face. Plus how Pacific Islanders changed high school football in Utah and why a Somali Bantu band from Vermont is in demand around the country.
This news article of 'odds and ends' has some interesting geographic content. Having lived in Utah for many years, I can attest to the fact that the "Polynesian Pipeline" for Utah schools is incredibly important and represents a chain migration that has culturally shifted both the 'host' and 'migrant' population. The 'haka' is now institutionized as a part of Intermountain West football culture.
Also in this article:
--Hispanics to outnumber whites in California by 2014
--Somali Bantu band from Burlington, VT in demand across the country
Tags: migration, culture, diffusion, religion.
Photo by Jean Paul Ferrero/Ardea/Caters News (via Exposing the Truth Lake Hillier is a pink-coloured lake on Middle Island in Western Australia. Middle island is the largest of the islands a...
Pictured above is Lake Hillier, located on a small island south of Western Australia. Around the world there are many pink lakes; most of them can attribute their hue to their high salinity composition. Some algaes that thrive in salt water produce organic pigments with a reddish/pinkish coloration. This particular lake's coloration is a mystery. If you any additional information, feel free to share in in the comments section below.
Tags: water, physical, images, Australia.
This amazing pink lake is located on Middle Island in Western Australia. It is rimmed with white salt and surrounded by a forest of dark green. The reason for the coloring of the lake are still a mystery. I would love to travel to see this amazing lake this is absolutley incredible!
CD 1: The different types of landscapes and their distinctive landform features.
Aboriginal leaders threaten to ban tourists from a top Australian landmark in protest at "racist" government policies.
This is an old article, but a fascinating topic that cuts across many geographic issues. Uluru, the landform that that European explorers named Ayers Rock, was the key place that is at the center of a struggle between indigenous people and the government. Many feel that the government's course of action in the mid 2000's was paternalistic and racist. They banned alcohol and pornography in over 70 indigenous communities in an attempt to lower the rates of child sex abuse. Sex Abuse is high (and often hidden) in aboriginal communities where a child is 7 times more likely to be abused than in the rest of the Australian population.
Questions to Ponder: Would the government impose such measures on other populations within Australia? When crimes have a racial component, does a government have the right to limit a particular groups' actions? Why or why not?
Tags: Australia, indigenous, ethnicity, race, Oceania.
This is a very strange article. After police and troops were sent into more than 70 indigenous communities after a report of wide spread child abuse tribal leaders threatened to ban tourists from being allowed to climb Uluru. TO me this sounds like they are trying to hid what is really going on in their communities.
There’s a South Pacific island positioned midway between Australia and New Caledonia featured on various marine charts, world maps, and has appeared in publications since at least the year 2000. It’s listed as Sandy Island on Google Maps and Google Earth, and yet Australian scientists have just discovered it doesn’t exist.
As part of a 25-day voyage, the group went to the area, only to find a 1,400m (4,620ft) deep section of the Coral Sea. The team collected 197 different rock samples, more than 6800km of marine geophysical data, and mapped over 14,000 square kilometers of the ocean floor. This is just a reminder that a map is only as reliable as the information used to compile that map (see BBC article as well). For another reminder of this same idea see "The Republic of Null Island."
The story behind the the International Date Line.
Not too long ago (Jan. 2012), the arbitrary International Date Line (roughly opposite the Prime Meridian) was moved to better accommodate the regional networks and economic geography of the area straddling the line. American Samoa, although politically aligned with the United States, was functionally more integrated on the Asian side of the Pacific Rim when it came to their trade partners and their tourism base. Dynamic economic networks, political allegiances and cultural commonalities create a beautifully complex situation near this 'border.'
This is an interesting article. I knew of the International Date Line, but I did not know anything about it or what it meant. It is a line that is roughly opposite the Prime Meridian that when crossed, the day advances forward, from Monday to Tuesday for example. The line is interesting because it is meant to not stir any problems. It goes through Siberia and the North Pacific Ocean since virtually no one lives in those areas. Even though less people live in the Pacific and South Pacific Islands than say, Europe and Africa or North and South America, people still do live here and they are negatively affected by the date line. American Samoa and Samoa, two islands made up of the same ethnic groups, are separated by the date line. Being separated by time zones affecting people by a few hours seems bad enough, but being separated by an entire day just does not work for many people.
It made sense for American Samoa to ask for the move even though it is US territory. It is more closely linked with the economies of the China, Japan, Australia, New Zeland and South Korea. For them to all be on the same day just makes sense. You can coordinate things better if everyone is on the same day, financial markets and be in line when the trading day starts and ends. Seems to me to make sense that they are on the same day as their main economic partners.
architectural conjecture :: urban speculation :: landscape futures...
In the 1960s when the island of Surtsey (literally) erupted onto the scene off the coast of Iceland, it's national sovereignty was not really called into question. The seamount, or near island named Ferdinandea in the Mediterranean is not even an island yet and countries are already positioning themselves to claim it. Only 6 feet below sea level, this seamount is incredibly valuable real estate because is a country can successfully came this territory, they could also lay claim to an Exclusive Economic Zone, extending up to 200 nautical miles beyond the coast.
NASA’s Goddard Space Flight Center Scientific Visualization Studio — the same team that recently brought us an animation of the moon as it will appear from Earth for each hour of 2012 — has also released a stunning video called “Perpetual Ocean,” a time lapse of the world’s ocean currents as calculated by the ECCO2 computational model.
This is an stunning visualization of ocean currents. Thanks for the suggestion!
This video is pretty awesome! I love how it shows the different ways that the currents move around the continents and in mid ocean. How are we not to expect for natural phenomenoms to be unpredictable when our oceansa re the same. i would have never expected to see so many idfferent flows and currents but they do exist. It gives you a look into how are planet works and also gives you a chilling thought of how easily a ship would get lost in deep ocean waters. - M. Carvajal
Fearing that climate change could wipe out their Pacific archipelago, the leaders of Kiribati are considering an unusual backup plan: moving the population to Fiji.
How urgent is the issue of climate change? That question is not only geographic in content, but the response might also be somewhat contingent on geography as well. If your country literally has no higher ground to retreat to, the thought of even minimal sea level change would be totally devastating.
The insect is so large — as big as a human hand — it's been dubbed a "tree lobster." It was thought to be extinct, but some enterprising entomologists scoured a barren hunk of rock in the middle of the ocean and found surviving Lord Howe Island...
Island Biogeography is endlessly fascinating and provides some of the most striking species we have on Earth. The physical habitat is fragmented and the genetic diversity is limited. Within this context, species evolve to fill ecological niches within their particular locale. This NPR article demonstrates the story of but one of these incredible species that never could have evolved on the continents. In modern society, more extinctions are happening on islands than anywhere else as 'specialist' species are in greater competition with 'generalists.'
The tree lobsters are very creepy. I wonder how they got to the island. Although I would not want one anywhere near me I am glad they are thriving…far away
Pictured above is what is left of a volcano called Ball's pyramid. It emerged from the ocean 7 million years ago and sits just off of Australia in the South Pacific. This rock also hides a secret, it is home to a six legged stick insect 12 centimeters long and the heaviest flightless stick insect in the world. If I had found those bugs I would not have been a happy camper!
Where Europe expanded & New Guinea persisted: "We are frankly in our age reluctant to talk about the real biological differences between human populations because of the excesses in this area in the past."
For those that use Jared Diamond's Guns, Germs and Steel, this would be good supplemental resource.
If you haven't yet discovered http://www.plaidavenger.com/ I recommend exploring it (numerous World Regional resources). You'll find its brand of geography has a whole lot of personality; you'll decide soon enough whether that personality works for your classroom. This particular 'plaidcast' discussion focuses on political geography, the Exclusive Economic Zones (EEZ), and the strategic importance of overseas exclaves using the Spratly Island example in the South China Sea.
Minor correction to video: Territorial waters only extend 12 miles offshore, not the 200 miles of the exclusive economic zone.
This paper-puppet animation celebrates the life of Alfred Russel Wallace, who is co-credited with Charles Darwin for the theory of natural selection. Read the story here: http://nyti.ms/1fhBbGw
Some of the greatest discoveries in biology began as spatial discoveries. Alfred Russel Wallace made some amazing advances in biogeography and discovered the appropriately named Wallace Line.
Tags: biogeography, environment, ecology, historical.
Did you know that in 2000 the IHO created a new ocean called the Southern Ocean? Here, learn about where and what the Southern Ocean is.
Maybe if more of the global population lived in the Southern Hemisphere, perhaps our educational systems would emphasize more information about the Southern Ocean (not to mention acknowledge that it even exists). This body of water isn't just the southernmost part of the Pacific, Indian and Atlantic Oceans; the biology, temperature, chemistry and ocean currents all make it a distinct body of water that circles Antarctica. This is just one of over twenty videos in the "geography" tab from the great folks at about.com.
Tags: Antarctica, water, physical.
An initial analysis of the Mount Dixon landslide in New Zealand on Monday
There are some great images (and a post-landslide helicopter flight video) of the massive landslide that occurred Jan 21, 2013. The rockslide extends over 3 km, with an elevation change of approximately 800 meters. This is an excellent example to help students visualize mass wasting, alpine glaciation and erosion in general. While the mountain didn't explode strictly speaking, I couldn't help but love the headline "Mount Dixon explodes!"
Tags: New Zealand, physical, geomorphology, erosion.
Just an incredible sight to see. The helicopter video is truly an amazing must see for anyone. Just to imagine what it would be like to be there when it happened. The speed at whcih the landslide moved plus the sounds it must have made would have been a once and a lifetime even, but if you were that close when it happened, it might be the end of your lifetime...what a way to go!
Should we look to traditional societies to help us tweak our lives? Wade Davis takes issue with the whole idea
Jared Diamond is famous for his work in writing Guns, Germs and Steel as well as Collapse. His latest work, The World Until Yesterday, he encourages modern readers to examine the traditional societies for insights on how to improve the human condition. In this book review by Wade Davis, he critiques this approach and suggests that we should see indigenous societies as reminders that our modern lifestyle is not the only way.
Tags: book reviews, folk cultures, indigenous.
Sometimes we all want to see a fabulously gorgeous physical landscape and marvel at the beauty that is in this world. For some other spectacular images, here is a great collection of images (without much geographic specificity though).
Papua New Guinea, once home to cannibals, still has an exotic aura. The local tourist economy caters to those notions, and visitors may see a hybrid of the traditional and the modern.
This story is an intriguing blend--we see traditional cultures engaging in the global economy. They have created two villages: a traditional one designed for tourism filled with emblems of their folk cultures, and another one where people work, live eat and play with various markers of outside cultural and technological influence.
"Tourists are taking pictures. They don't want to take pictures of those who are in Western clothes. People who are in Western clothes are not allowed to get close to people who are dressed up in the local dressings."
Questions to Ponder: Which village do you see as the more "authentic" one? How can culture also be a commodity?
Tags: folk culture, tourism, indigenous, culture, economic, rural, historical, unit 3 culture, Oceania.
The more authentic village is the one with the folk culture the rural one, because they haven’t lost their traditions and their identity. Culture can be a also a commodity for example you have Papua New Guinea. People are intrigue on their way of living so they will pay to go see them. Places like Papua New Guinea attract a lot of tourist. A country with tourist is a country that is receiving money.
This NPR audio source reveals two totally different lives in Papua New Guinea. There is one side that caters to tourism by showing the "old" Papua New Guinea. This village promotes tourism and it has tours that show old, sort of primitive traditions in Papua New Guinea. It is still important to the natives because it does preserve their past culture. The villagers feel that the world is becoming so westernized that they cannot go back to the old ways of traditions such as cannibalism, wearing little clothing, etc., but when tourists travel to this village, those are the things they want to see. The man in the audio source then traveled to another village where he witnessed how people of Papua New Guinea actually live, which is westernized. I think that both villages are authentic. One village represents their past culture and traditions and origins which is still important, and the other village represents globalization and the changes that the people of Papua New Guinea adapt to. Culture can be a commodity because people such as westerners buy into what they think a country's particular culture is, even though that culture existed centuries ago and the culture has drastically changed since.
Jeff Larson has seen just about everything wash up on the shores of Santa Cruz: bottles, toys, shotgun shells, busted surfboards and fishing floats that looked like they had bobbed across the Pacific.
This is just another long-term 'after-shock' of the tsunami that devasted Japan over 1 year ago.
High-resolution imaging has allowed scientists to produce the first full count of Antarctica's emperor penguins...
Before this, there was no way to to gather reliable penguin statistics. Geospatial technologies are now providing us the tools to teach us more about the biogeography of penguins. The applications of geospatial technologies are endless.
Using high resolution images from satilites geographers and ecologists are looking at emperor penguins. They have come up with the first ever population total of 595,000 penguins which is nearly twice as many emperor penguins as previous studies. They also counted 46 colonies. This is so cool, Penguins are one of my favorite animals and are so fasinating to me.
March 26, 2012—In a state-of-the-art submersible, National Geographic explorer-in-residence and filmmaker James Cameron reached the deepest point of the Mariana Trench, breaking a world record for the deepest solo dive.
For those who haven't been following National Geographic news, James Cameron (director of "Titanic" and "The Abyss") entered a submarine named DEEPSEA CHALLENGER, and dove to the bottom of the Mariana Trench, the deepest point on Earth. Enjoy this video describing this "lunar-like" environment that is so deep it is lightless and near lifeless with extreme pressure. For more on the expedition, read: http://news.nationalgeographic.com/news/2012/03/120326-james-cameron-mariana-trench-challenger-deepest-lunar-sub-science/
This is amazing! I love the fact there isalways one person willing to rishk his own life just to gain more knowledge of the world we live in. The Mariana Trench is definteley a scary place and by it being the deepest trench in the world, I can see why not many would consider going down there. I am looking forward to the release of any videos that may come from this expedition he took. - M. Carvajal
Scientists model where and when the debris from the March 2011 Japanese tsunami will be. The likelihood that the debris (not radioactive) will reach the U.S. west coast is increasingly likely. Look at the great video attached to the article.
Interesting to see were all the “junk” is going. I wonder how it effects the water and the ecosystem as it moves.
It will be very interesting to see if this floating pile of junk actually reaches the west coast of the United States. It seems possible that it could, but some of the scientists and other experts believe that it could also break up and sink before it reaches us. One of my questions going in was whehter or not the wreckage was radioactive? Luckily it is not radioactive and that should not be a concern for anyone.
Divers on Australia's Great Barrier Reef recently snapped rare pictures of a wobbegong, or carpet shark, swallowing a bamboo shark whole.
The diversity of life on this planet and the ecosystems which such creatures live in is something that continually leaves me in awe at the wonders of the natural world.
Not only is the ocean full of diverse wildlife but the fact they have been able to camoflouge with their enviroment is amazing. Australia seems to be the home of many different types of wildlife on land and in the ocean. It would be interesting if there could be a google earth view of australias coral reefs and wildlife. - M. Carvajal
The diversity in the ocean is amazing. The sharks are just beautiful and it is amazing the can blend in with their enviroment
Such an incredible sight to see. The amount of bio-diversity located in the Great Barrier Reef is just astounding. No wonder people feel this is an asset to keep. Not only will it bring in toursim and the money that goes along with it, the toursim will help keep the area clean for the government will not want to lose the billions of dollars they earn from tourism. Ecologically the preservation of this area will benefit not only the natural wildlife there, but it will benefit the people. Even if it is a bit selfish to keep it preserved for monetary reasons, at least it is still being preserved.
"Just this once, Samoa is making Dec. 30 disappear."
I hope you enjoy your Friday, because they won't in Samoa. It didn't even happen, since they've canceled Friday Dec. 30th and just skipped straight to Dec 31st. This would make no sense without an understanding of the International Date Line and the regional economic networks of Oceania. Since Samoa's economy in tightly connected to New Zealand and Australia (on the 'other' side of the IDL) it's financially beneficial to have their work weeks line up to faciliate same day communications and business interactions. For more see: http://www.abc.net.au/news/2011-12-29/samoa-time-zone-jump/3751254 and http://www.nytimes.com/2011/12/30/world/asia/samoa-to-skip-friday-and-switch-time-zones.html?ref=sethmydans