Animation: The Heartbeat of Nature’s Productivity
Even the most ferocious predator must rely on simple plants for vitality. That’s because without the conversion of carbon dioxide to organic compounds, entire food chains would cease to exist.
Photosynthesis is quite the catalyst for life, yet it’s easy to overlook this humble chemical process. But what if you could see its results scaled across the globe?
The Pulse of Nature
Today’s unique cartogram animation comes from geographer Benjamin Hennig at Worldmapper, and it depicts ongoing cycles in the productivity of ecological systems around the world. Created with Yadvinder Malhi from the University of Oxford, the researchers factored the daily net photosynthesis value over an 8-day interval of satellite observations, and extrapolated the trends for a year.
The outcome? A pattern of gross primary productivity (GPP) – the net amount of energy produced by land plants during photosynthesis – resembling the rhythmic impression of a “heartbeat”.
Here’s how a big-picture of average annual productivity ends up looking:
Location, Location, Location
Although the entire biosphere harnesses the sun’s energy, it’s clear this varies greatly based on both region and season. For example, desert areas such as the Sahara or Australian Outback occupy relatively low productivity areas on the map.
The taiga biome, a boreal forest made of coniferous trees such as pines, accounts for nearly a third of the world’s forest cover. Since the largest boreal areas are in Russia and Canada, it’s no wonder their productivity shrinks dramatically when it gets a bit cooler up north. When these areas slow down in sub-zero temperatures, their tropical neighbors to the south do the heavy lifting.
If forests are considered the world’s lungs, then the Amazon in South America and Congo forest in Central Africa help us all breathe a bit easier. The two largest forests act as crucial “carbon sinks”, trapping carbon that would otherwise be converted to carbon dioxide.
It’s also why rapid deforestation of these areas is cause for alarm. Many environmental scientists suggest that our human impact on forests could intensify global warming.
But there is good news – since the 1990s, the rate of net forest loss has declined by almost half. Progress fares differently across the regions:
Image Source: United Nations
Which Countries are Mapping the Ocean Floor?
We know more about the surface of Mars than we do on the ocean floor. Which countries are mapping the ocean floor, and what’s still unknown?
Which Countries are Mapping the Ocean Floor?
Our vast and complex planet is becoming less mysterious with each passing day.
Consider the following:
- Thousands of satellites are now observing every facet of our planet
- Around three-quarters of Earth’s land surface is now influenced by human activity
- Aircraft-based LIDAR mapping is creating new models of the physical world in staggering detail
But, despite all of these impressive advances, our collective knowledge of the ocean floor still has some surprising blind spots.
Today’s unique map from cartographer Andrew Douglas-Clifford (aka The Map Kiwi) focuses on ocean territory instead of land, highlighting the vast areas of the ocean floor that remain unmapped. Which countries are exploring their offshore territory, and how much of the ocean floor still remains a mystery to us? Let’s dive in.
What Do We Know Right Now?
Today, we have a surprisingly incomplete picture of what lies beneath the waves. In fact, if you were to fly from Los Angeles to Sydney, the bulk of your journey would take place over territory that is mapped in only the broadest sense.
Most of what we know about the ocean floor’s topography was pieced together from gravity data gathered by satellites. While useful as a starting point, the resulting spatial resolution is about two square miles (5km). By comparison, topographic maps of Mars and Venus have a resolution that’s 50x more detailed.
As the map above clearly illustrates, only a few large pieces of the ocean have been mapped—and not surprisingly, many of these higher resolution portions lie along the world’s shipping lanes.
Another way to see this clear difference in resolution is through Google Maps:
As you can see above, these shipping lanes running through the Pacific Ocean have been mapped at a higher resolution that the surrounding ocean floor.
The Countries Mapping the Ocean Floor
The closer an area is to a population center, the higher the likelihood it has been mapped. That said, many countries still have a long way to go before they have a clear picture of their land beneath the waves.
Here is a snapshot of how far along countries are in their subsea mapping efforts:
|Countries/territories||Size of Exclusive Economic Zone* (EEZ)||Percentage of EEZ mapped|
|Japan||1,729,501 mi² (4,479,388 km²)||97.7%|
|United Kingdom||2,627,651 mi² (6,805,586 km²)||90.6%|
|Norway||920,922 mi² (2,385,178 km²)||81.9%|
|New Zealand||1,576,742 mi² (4,083,744 km²)||74.0%|
|United States||4,382,645 mi² (11,351,000 km²)||69.9%|
|Australia||3,283,933 mi² (8,505,348 km²)||64.9%|
|Iceland||291,121 mi² (754,000 km²)||49.9%|
|South Africa||592,874 mi² (1,535,538 km²)||39.5%|
|Canada||2,161,815 mi² (5,599,077 km²)||38.8%|
|Samoa||49,401 mi² (127,950 km²)||34.6%|
|South Korea||183,579 mi² (475,469 km²)||28.3%|
|Taiwan||32,135 mi² (83,231 km²)||26.3%|
|Argentina||447,516 mi² (1,159,063 km²)||22.6%|
|Cook Islands||756,770 mi² (1,960,027 km²)||29.0%|
|Phillippines||614,203 mi² (1,590,780 km²)||16.7%|
|China||338,618 mi² (877,019 km²)||11.4%|
|Madagascar||473,075 mi² (1,225,259 km²)||5.5%|
|Bangladesh||45,873 mi² (118,813 km²)||3.3%|
|Thailand||115,597 mi² (299,397 km²)||1.5%|
*An exclusive economic zone (EEZ) is the sea zone stretching 200 nautical miles (nmi) from the coast of a state.
Japan and the UK, which have the 5th and 8th largest EEZs respectively, are the clear leaders in mapping their ocean territory.
Piecing Together the Puzzle
Sometimes tragedy can have a silver lining. By the time the search for Malaysia Airlines Flight 370 concluded in 2014, scientists had gained access to more than 100,000 square miles of newly mapped sections of the Indian Ocean.
Of course, it will take a more systematic approach and sustained effort to truly map the world’s ocean floors. Thankfully, a project called Seabed 2030 has the ambitious goal of mapping the entire ocean floor by 2030. The organization is collaborating with existing mapping initiatives in various regions to compile bathymetric information (undersea map data).
It’s been said without hyperbole that we know more about the surface of Mars than we do about our own planet’s seabed, but thanks to the efforts of Seabed 2030 and other initiatives around the world, puzzle pieces are finally falling into place.
Visualizing the Biggest Threats to Earth’s Biodiversity
Earth’s biodiversity has seen a massive decrease over the years. What’s driving this loss, and which regions have been impacted the most?
The Biggest Threats to Earth’s Biodiversity
Biodiversity benefits humanity in many ways.
It helps make the global economy more resilient, it functions as an integral part of our culture and identity, and research has shown it’s even linked to our physical health.
However, despite its importance, Earth’s biodiversity has decreased significantly over the last few decades. In fact, between 1970 and 2016, the population of vertebrate species fell by 68% on average worldwide. What’s causing this global decline?
Today’s graphic uses data from WWF’s Living Planet Report 2020 to illustrate the biggest threats to Earth’s biodiversity, and the impact each threat has had globally.
Measuring the Loss of Biodiversity
Before looking at biodiversity’s biggest threats, first thing’s first—how exactly has biodiversity changed over the years?
WWF uses the Living Planet Index (LPI) to measure biodiversity worldwide. Using data from over 4,000 different species, LPI tracks the abundance of mammals, birds, fish, reptiles, and amphibians across the globe.
Here’s a look at each region’s average decline between 1970 and 2016:
|Rank||Region||Average decline (between 1970 and 2016)|
|1||Latin America & Caribbean||94%|
|5||Europe and Central Asia||24%|
Latin America & Caribbean has seen the biggest drop in biodiversity at 94%. This region’s drastic decline has been mainly driven by declining reptile, amphibian, and fish populations.
Despite varying rates of loss between regions, it’s clear that overall, biodiversity is on the decline. What main factors are driving this loss, and how do these threats differ from region to region?
Biggest Threats to Biodiversity, Overall
While it’s challenging to create an exhaustive list, WWF has identified five major threats and shown each threats proportional impact, averaged across all regions:
|Threat||Proportion of threat (average across all regions)|
|Changes in land and sea use||50%|
|Invasive species and disease||13%|
Across the board, changes in land and sea use account for the largest portion of loss, making up 50% of recorded threats to biodiversity on average. This makes sense, considering that approximately one acre of the Earth’s rainforests is disappearing every two seconds.
Species overexploitation is the second biggest threat at 24% on average, while invasive species takes the third spot at 13%.
Biggest Threats to Biodiversity, By Region
When looking at the regional breakdown, the order of threats in terms of biodiversity impact is relatively consistent across all regions—however, there are a few discrepancies:
In Latin America and Caribbean, climate change has been a bigger biodiversity threat than in other regions, and this is possibly linked to an increase in natural disasters. Between 2000 and 2013, the region experienced 613 extreme climate and hydro-meteorological events, from typhoons and hurricanes to flash floods and droughts.
Another notable variation from the mean is species over-exploitation in Africa, which makes up 35% of the region’s threats. This is higher than in other regions, which sit around 18-27%.
While the regional breakdowns differ slightly from place to place, one thing remains constant across the board—all species, no matter how small, play an important role in the maintenance of Earth’s ecosystems.
Will we continue to see a steady decline in Earth’s biodiversity, or will things level out in the near future?
Financing3 weeks ago
The 25 Largest Private Equity Firms in One Chart
Agriculture1 month ago
The Economics of Coffee in One Chart
Politics4 weeks ago
Charting America’s Debt: $27 Trillion and Counting
Leadership3 weeks ago
The World’s Most Influential Values, In One Graphic
Politics3 weeks ago
Animated Map: U.S. Presidential Voting History by State (1976-2016)
Markets1 week ago
Mapped: The Top Export in Every Country
Misc4 weeks ago
The 50 Highest Cities in the World
Politics3 weeks ago
Decoding U.S. Election Day in 9 Key Charts