Canada’s intact forests: world’s largest!

Canadian Geographic has just released a short article that certainly begs the half-full-half-empty glass question, or, this case, forests. Over 90% of Canada’s intact* forest is boreal forest, making it, at 300 million hectares, the largest intact forest in the world. However, the same can’t be said for some the species-rich southern forests which have almost eliminated. And, sadly, Alberta has only 16% of it’s intact boreal forestremaining. So, much to celebrate, but also much to consider.

*intact = a forest area of 50 000ha or larger.

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Infographic: Canada’s protected areas

Canadian Geographic has just released an infographic updating Canada’s protected areas.

Canadians can be proud of our protected areas – national parks and many (but not all) provincial parks – but we still have a long ways to go! To date, our 7500 protected areas add up to 11.7% of our area BUT this is still far short of the UNEP target of 17% by 2020. We’re doing better at protecting land area, with 11.5% protected, but Great Lakes and marine areas have only 1.5% protected. Furthermore, some areas of the country, such as the Prairies and the lower Great Lakes region, are still very poorly represented. In a recent press release, though, the Government of Canada has “committed that at least 17 per cent of land and inland water will be conserved by 2020”.

Weekend Wandering 8 – App Review: Earth Primer

EarthPrimerI’m not usually in the habit of reviewing apps, but when Earth Primer came along, I was excited enough by its prospects to give it a try. I must admit to hesitating at the $9.99 price tag, and was thinking I would not bother. [Aside: It’s a shame, really, that we’ve become so highly price-conscious of apps that cost more than a couple of bucks, but that’s the way apps have gone. In fact, I was recently burned after paying $12.99 for an Oxford Atlas that I learned wouldn’t work after upgrading to iOS 8 and that Oxford would not be updating the app – annoying to say the least!] So, in the interests of full-disclosure, I am reviewing a free copy of the app thanks to the author, Chaim Gingold.

Let me start off by saying this is one cool app. I can’t imagine how much I would have loved to “play” with this as a 9 to 11 year old. Over my 20+ years of teaching, I’ve always maintained that if anyone could build learning into a “video game” (then computer game, then app) then we would have the most knowledgeable students around – Earth Primer goes a long way towards fulfilling that notion.

Earth Primer has four “chapters” or areas of learning: 1. Interior, 2. Surface, 3. Water and 4. Biomes. Beginning at the “Core” we work our way out to the “Crust” with “Tectonic Collisions” and “Hotspots” as well. This is well-thought-out with a logical progression of understanding. The convection current animations in the Mantle are effective, so much much so, that I miss them in subsequent animations of “Subduction”, for example. However, beyond a quick mention, where’s the Seafloor Spreading? Rifts are there and a reference to the East African Rift, but it’s difficult to talk about tectonic processes without a page on mid-oceanic ridges and, for example, Iceland. Also, I would have liked to see a connection made between the location of earthquakes, volcanoes and plate margins. What a great animation opportunity!

Another error of omission is an “Atmosphere” component. While some of the atmosphere concepts are covered elsewhere, for example, “Evaporation” is under “Water”, and one can change the temperatures of terrains and add rainfall, there is no treatment of the Sun-Earth energy balance that drives many of Earth’s EarthPrimerGalciersurface processes (and is connected to climate change which is mentioned a few times), there is nothing about climate as a whole except being casually mentioned in the various “Biomes”.

I do like how each chapter is designed, however, around an overview illustration. As well, the Biomes are arranged on a grid from cold to hot and dry to wet – nicely done and great for making connections. But, I miss a map reference when place names are mentioned. This is particularly apparent in Biomes; it appears Biomes could use a bit more work in this area as well as the addition of some photographs, as the animations are poor; e.g. Taiga shows only patchy areas of coniferous forest rather than great swathes of forest as it characteristic of the biome.

The other point of note is that Earth Primer defaults to a strictly linear path through the app. At first, this confused and frustrated me, but then again, I’m not a gamer and this app is made for 9 to 11 year-olds who would be more inclined to follow a linear route and complete tasks to get to the next “level”. While a linear approach seems counter-intuitive to today’s ways of dynamic learning, I understand that knowledge builds on knowledge. If desired, full access to all areas can be toggled on in the iOS Settings screen.

EarthPrimer-SandboxThe interactivity of the animations is wonderful, however, and is Earth Primer’s greatest strength. Each terrain responds to the earth process you introduce: raise/lower bedrock, add/remove sediment, wind, rain, raise/lower sea levels, raise/lower temperature – the permutations and combinations are immeasurable!

One area to spend some time in is the Sandbox. You start by selecting a terrain model. From there, the sky is the limit as to what you do with it. Drop the temperature, add a glacier, raise the sea level, add sand and wind – with each change the animation responds accordingly based on the principles of earth science. As you reduce the temperature, for example, even the tree types change from Tropical Broadleaf, to Temperate Deciduous then to Boreal. What a great way to have students design a terrain then talk you through the changes they make and the results of those changes. It would be nice, though, to see some tectonic sandbox terrains and tools.

Overall, Earth Primer is an intriguing app. It offers an incredible number of interactive animations that explore a large gamut of earth science processes. Animated trees and rocks are simplified into geometric shapes, but are very effective in their presentation. What I find frustrating, though, is that, while the diversity of topics is there for the most part, the depth of presentation and knowledge is, at times, lacking I know, it’s for 9-11 year olds, but there is enough potential built into app for right up to high school.

Further to examples of even greater potential mentioned above, the app explores erosion, transportation and sedimentation but only mentions weathering. And, while river deltas come at the end of “Streams” (under “Surface, not “Water”), it ignores the fact that erosion, transportation and sedimentation have been presented and only gives a still satellite view of the Nile Delta. To me, it seems like an ideal place to use an interactive animation to allow users to create a delta, having it form and grow with the different grades of materials introduced previously in “Sediments” sorting themselves downslope.

Here are summaries of what I’ve found in these first few dips into the app.

Positives…

  • Interactive: it will get kids creating volcanoes and rift valleys, causing erosion with rainfall, etc. They will see the effects of warmer temperatures on glaciers, for example.
  • Animations and visuals are very well done adding to the interactive nature of the app. To be able to rotate and zoom visuals add more rain or higher temperatures, even build a glacier, are all truly amazing.
  • Sandbox: Using a variety of earth processes, although not complete, students can create terrains that they can then explain based on their learning.

Shortcomings…

  • Too shallow in places; e.g Students can create volcanoes, but there is no deeper level to learn more about types of volcanoes, features, location, etc.
  • Too simple: No mention of the Rock Cycle which is a great tie in with the “Interior”, nor climate, not sealer spreading. Mountain-building is limited to pushing up terrain with your finger in “Surface” rather than pushing plates together to cause folding, which could easily be done in “Interior” under “Continental Convergence”.
  • Use precise language in more places; e.g. Instead of “mountains might break down into sand”, the terms weathering and erosion should be introduced, perhaps with a glossary or simple a click on the word brings up a bubble with the definition.
  • Grammatical Errors or typos: e.g. “Volcanoes emit lava which cool [sic] and grow the hard shell of rock…”. Also, no mention is made of  the difference between lava and magma.
  • Earth Science Errors – I noticed some errors perhaps due to the app’s simplistic nature; e.g. at the San Andreas Fault, Earth Primer shows the North American plate moving southeast and the Pacific Plate moving northwest – this is only true in a broad, relative sense. What is actually happening is the North American Plate is moving west-southwest while the Pacific Plate is moving northwest but at a faster rate..
    Another example is with Groundwater: “If the [ground]water hits a dead end it will fill it up, creating a kind of underground lake.” It is simplistic learning like this that needs to be unlearned and re-learned correctly later on in school. It’s not a lake, but an aquifer: an underground layer of rock, sand  or soil saturated with water.

Next Steps:

  • While the soundtrack can be turned off under iOS > Settings, the sound effects cannot.
  • Add a Search function. If a student wants to go to “Erosion” they must guess that it’s under “Water > Streams”, yet erosion can also be the result of wind and glaciers and it is not found under “Sedimentation”.
  • Add map references to places named.
  • Add a slider to change the speed at which animations happen. Although they are meant to represent a thousand years per second, the clouds begin to look like pinballs bouncing around the animations.
  • Add more topics; e.g. some basic earth science topics such as the Rock Cycle and Flood Plains are not mentioned even though magma, lava and meanders are.
  • Add further, more in-depth learning. At $9.99, the price seems steep for this simple level of learning.

So, the bottom line question is this: Is Earth Primer worth the $9.99 being charged? While I applaud the work that has gone into this app, I feel there are too many missed opportunities and errors of omission to make it worth the full price; $3.99 perhaps, Even $4.99, but not $9.99. Earth Primer calls itself “A science book for playful people” – that I agree with! Does it replace a textbook for younger students? While some of the topics are covered at that age, most are not, so Earth Primer becomes a great bridge to further learning. Overwhelmingly, though, Earth Primer is certainly a great way to introduce kids to the dynamics of earth processes.

Canada’s “Burgess Shales”: Site 2

Researchers from the Royal Ontario Museum are busy drilling, chiselling and carefully dislodging one well-preserved fossil after another at a recently discovered site in the Rocky Mountains. (Courtesy Royal Ontario Museum)
Researchers from the Royal Ontario Museum are busy drilling, chiselling and carefully dislodging one well-preserved fossil after another at a recently discovered site in the Rocky Mountains. (Courtesy Royal Ontario Museum)
Researchers from the Royal Ontario Museum are busy drilling, chiselling and carefully dislodging one well-preserved fossil after another at a recently discovered site in the Rocky Mountains. (Courtesy Royal Ontario Museum)

Too few Canadians realize how significant Canada is for understanding how life unfolded on Earth. The rocks under our feet are home to some of the most significant fossil finds and fossil troves in the world: Dinosaur Provincial Park in Alberta; Joggins Fossil Cliffs in Nova Scotia; the Burgess Shales in Yoho National Park in BC; and Miguasha Park, QC – all have been designated World Heritage Sites for the fossils found there and each helps to write a different chapter of what Earth was like when the respective strata were laid down.

Other significant sites, that do not (yet) have World Heritage Status include Mistaken Point, Newfoundland, the Tumbler Ridge dinosaur trackway in BC, and the Milk River Badlands in Alberta plus a number of other sites scattered across the Prairies and Ontario (and, no doubt, many more in the Arctic yet to be discovered). As well, Canada is home to some of the world’s leading paleontological institutes: the Royal Tyrrell Museum, the Royal Saskatchewan Museum, the Royal Ontario Museum (the ROM) and the Canadian Museum of Nature. We are a fossil nation! (For a more complete list, have a look at the Courtenay (BC) Museum’s Canadian Fossil Trail).

Now, add to this mix a second site of “Burgess Shale” strata just south of Yoho in Kootenay National Park’s Marble Canyon – the point of this post!

As Canadians, we are known for not blowing our own horn and I think this to our disadvantage at times. Of course, it’s also the price we  pay living next to a behemoth wIth a media machine that thoroughly mythologizes their culture (and science) which completely overwhelms we in the “51st state”. So our kids grow up reading National Geographic, rarely seeing  what our own nation has to offer, except through the eyes of Canadian Geographic, which, for some reason I can’t quite put my finger on, doesn’t carry the same cachet or mystique as NG does with students – but I’ll save that discussion for another post.

Back to the point of this post… Ivan Semeniuk has written a piece for the Globe & Mail about the “new” (now a few years old) fossil location in Kootenay, equal to, if not more significant than, the Burgess Shales 40km to the north: 500 million years ago, this critter had a really bad day. No, this site doesn’t contain the “sexy” fossils of T. rex or its pals, but these new finds chronicle what is called the “Cambrian explosion” – the huge diversification of life that occurred in the Cambrian Period. In a geological moment– some 20 million years – virtually all the animal body plans found on Earth today evolved. The Burgess Shales and these new strata at Marble Canyon provide the snapshots though time that help palaeontologists understand this progression of evolution.

Semeniuk points out that fossils from this era are particularly well-preserved. Due to the chemistry of seawater at the time, not only are shells and exoskeletons preserved, but soft tissues have been captured in the rock allowing for much more detailed analysis.

The value of this article, in particular, is all the “bits” that come with it: a video, descriptions of how palaeontologists work, visualizations of the critters being found and a geologic time line – all helpful for gaining a greater understanding of the work that goes on behind the scenes of fossil digs, and ideal for armchair palaeontologists of all ages!

For more on Geologic Time and Palaeontology, visit GeoKnow.net > Lithosphere

[Aside: Rather ironically, I came across this Globe & Mail article in a National Geographic Blog!]

Endangered Perspectives: Last of their kind

 Great Auks from Heinrich Harder's Tiere der Urwelt illustration \ Public domain.

Great Auks from Heinrich Harder’s Tiere der Urwelt illustration \ Public domain.

A highly under-rated and under-read journal is the Alternatives Journal – “Canada’s Environmental Voice”. I’ve found its articles very helpful over the years.

A recent article that caught my attention is Endangered Perspectives: Last of their kind. Endangered Perspectives, is helpful to teachers and students because it is short and to the point. It doesn’t candy-coat extinction but boldly tells of our collective abuse, focussing on three species close to our shores: the sea mink, the great auk and the passenger pigeon.

I don’t know how many times I’ve read about these species and their demise, but there is something in Zack Metcalfe’s telling that struck a chord with me. Perhaps it will with you, too.

Why Poor Places are More Diverse – MinuteEarth (again!)

poorGotta love these MinuteEarth guys and their witty, thoughtful animations. Why Poor Places are More Diverse, from just last month, is, particularly deep…

I wasn’t sure what to expect when I clicked play, thinking this was about rich-poor in human terms. However, the video starts off describing how biodiversity is greatest in places with nutrient-poor soils like the Tropical Rainforests, the Australian Kwongan scrub and the South African fynbos. Fair enough – huge diversities in nutrient-poor soils.

But, then they bring it around and make a quick comparison to human places – sure enough, rich places are becoming more and homogenous, poor places remain highly diverse. Wow! Great stuff to really get your students thinking. I know I’ll be using this in my World Studies course, for sure!