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?
UN Sustainable Development Goals: How Companies Stack Up
Are companies making progress in meeting the UN Sustainable Development Goals? This tracker shows how companies are measuring up.
The UN SDGs: How Companies Stack Up
Environmental, social, and governance (ESG) investing witnessed a breakthrough year in 2020 with the most fund inflows on record.
Importantly, for companies that are judged according to ESG metrics, one way to track their progress is through their alignment to the UN Sustainable Development Goals (SDGs).
Established in 2012, the UN SDGs are a blueprint for creating a more sustainable future by 2030 that have been adopted by 193 countries worldwide.
As investors and stakeholders pay closer attention to sustainability concerns, this graphic from MSCI breaks down how companies stack up according to their alignment to the UN SDGs.
How Were Companies Measured?
To track companies net contribution to the UN SDGs, companies were scored by their positive or negative contribution to each of the 17 goals.
The 17 UN SDGs are designed to achieve three primary objectives by 2030:
- Protect the planet
- End poverty
- Create prosperity and peace for all
Specifically, the framework centers on a discussion paper that was developed in partnership with the OECD in 2018. Company policies, operations, products and services, and practices are analyzed according to reported and publicly available information.
Tracking the Alignment of Companies
Across a universe of 8,550 companies in the MSCI All Country World Index, constituents were measured from strongly aligned to strongly misaligned to the UN SDGs.
|3||Good Health and Well-being||0||315||141||29|
|6||Clean Water and Sanitation||17||325||36||10|
|7||Affordable and Clean Energy||43||639||109||587|
|8||Decent Work and Economic Growth||25||1269||52||17|
|9||Industry, Innovation, and Infrastructure||68||844||137||9|
|11||Sustainable Cities and Communities||0||0||167||19|
|12||Responsible Consumption and Production||115||855||150||598|
|14||Life Below Water||0||36||151||92|
|15||Life on Land||0||0||128||17|
|16||Peace and Justice Strong Institutions||0||135||241||27|
|17||Partnerships to Achieve the Goal||0||401||152||22|
Source: MSCI ESG Research LLC as of August 11, 2020
Broadly speaking, companies fell mostly in the middle—roughly 38% were aligned while almost 55% were misaligned or neutral. Meanwhile, just 0.2% of companies were strongly aligned to the UN SDGs.
Overall, one of the most strongly aligned goals was Responsible Production and Consumption, with 115 companies meeting this criteria. Specifically, these include companies that are building sustainable infrastructure, energy efficiency, or creating green jobs.
Interestingly, the worst performing goal was also Responsible Production and Consumption, with over five times as many companies (598) strongly misaligned. Along with this goal, both Climate Action and Affordable and Clean Energy each had over 500 companies strongly misaligned.
UN SDGs: A Sector Focus
Unsurprisingly, SDG-alignment varied widely according to company sectors.
Educational companies, for instance, represented the highest level of alignment to Gender Equality. Meanwhile, 18% of 425 utilities companies assessed ended up aligning with Clean and Affordable Energy goals.
As one would expect, the energy sector lagged behind. In 2020, fossil fuels were a key source of revenue for 91% of the companies in the energy business. In fact, just three companies derived over 50% of their revenues from green alternatives: REX American Resources, Renewable Energy Group, and Verbio.
A Call to Action?
Despite the growing wave of interest in ESG investing, the reality is that progress to meet the UN SDGs has been slower going than expected.
However, a greater number of individuals, stakeholders, and activists are sounding the alarm. Today, over 3,000 signatories representing trillions in assets under management have committed to the UN Principles of Responsible Investment, which has established six key actions for ESG investing. Now, many companies are required to report their ESG disclosures in Europe.
Along with these key markers of progress, investors can move the dial by tracking a company’s alignment to sustainable development goals.
Mapped: The Greenest Countries in the World
The world’s growing focus on sustainability is a clear sign of the times. This map ranks the 40 greenest countries in the world.
Mapped: The Greenest Countries in the World
From widening wealth disparity to the environmental ramifications of economic development—the growing focus on global sustainability is a clear sign of the times.
Research reveals that when a sustainable ethos is applied to policy and business, it typically bodes well for economies and people alike. By providing benchmarks for those decisions, indexes like Yale’s Environmental Performance Index (EPI) can be critical to measuring national sustainability efforts.
The above map interprets the EPI ranking of 180 economies across 32 environmental health indicators by narrowing in on the top 40 greenest countries.
Who’s the Greenest of them All?
Despite the decades-long trend of globalization, national environmental policies have proved to be widely divergent. The EPI report confirms that those policies—and their positive results—are highly correlated with national wealth.
This is evidenced in the global EPI distributions, seen below:
|OVERALL RANK||COUNTRY||SCORE||REGIONAL RANK|
|24||United States of America||69.3||21|
|42||United Arab Emirates||55.6||2|
|63||Antigua and Barbuda||48.5||10|
|65||St. Vincent and Grenadines||48.4||11|
|69||Trinidad and Tobago||47.5||14|
|78||Bosnia and Herzegovina||45.4||18|
|119||São Tomé and Príncipe||37.6||10|
|124||Central African Republic||36.9||12|
|125||Dem. Rep. Congo||36.4||13|
|146||Papua New Guinea||32.4||20|
|154||Republic of Congo||30.8||26|
Regional grouping in the report include: Global West, Asia-Pacific, Eastern Europe, Former Soviet States, Greater Middle East, Latin America & Caribbean, Southern Asia, and Sub-Saharan Africa
Scandinavian countries, which tend to have a high GDP per capita, show strong and consistent results across EPI parameters. Denmark for instance—which ranks first overall—leads the world in slowing its growth in CO2 emissions. Meanwhile, neighbor Sweden leads in landfill and recycling treatment, while wastewater treatment is led by a handful of countries within and beyond Scandinavia including Denmark, Finland, the Netherlands, Singapore, and Sweden.
In North America, Canada claims top spot in the biodiversity and habitat category, while the U.S. ranks sixth in agricultural diversity globally. In Asia, Singapore leads the world in fishery health and sustainability.
Ultimately, it appears the world’s greenest countries tend to focus on all areas of sustainability, while laggard countries show more uneven performance across categories.
What Does “Green” Mean?
Each high-level performance indicator with the EPI, like “environmental health”, is broken into subsections. Nations are scored on each subsector on a scale up to 100. As a result, multiple countries can rank first in any given category.
By evaluating national sustainability on a scale that is unrelated to other nations, we get a clearer idea of comparative national progress, beyond a basic ranking.
For instance, 30 countries tie for first in marine protection, all with scores of 100. This shows that many economies are prioritizing this area of sustainability.
The EPI categories and subsectors are shown in the diagram below:
Each section is weighted differently, and is reflected as a percentage within the index. For example, Ecosystem Vitality accounts for 60% of the EPI, Climate Change makes up 24% of a country’s score, and CO2 emission reduction is weighted at 13.2%.
The Cost of Being Green
Infrastructure costs are one reason why wealthier nations tend to fare better across sustainability measures. Everything from air pollution reduction and water treatment, to hazardous waste control and mitigation of public health crises are especially expensive—but have a huge potential impact on citizens.
This trend can be seen the scatterplot, which demonstrates the distribution of economies evaluated by the EPI:
For a more detailed look, the table below highlights the GDP per capita of each of the top 40 greenest countries, based on data from the World Bank and Statista:
|COUNTRY||EPI SCORE||GDP Per Capita||RANK|
|United States of America||69.3||65,298||24|
Despite the strong correlation between GDP per capita and EPI score, developing countries do not have to abandon sustainability efforts. China for instance leads the world in the adoption of electric vehicle technology.
Although some rankings can seem prosaic, indexes like the EPI provide a helpful benchmark for economies to compare efforts. It also allows governments to iterate and build upon environmental strategies and investments by highlighting what is and isn’t working.
CO2 emissions, for instance, are a major driver of climate change. Although the global economic stall has led to a temporary dip of CO2 emissions in early 2020 (a slower growth rate than the 11% expected rise), global emissions still continue.
However, the EPI shows that investments have impact. High-level sustainability efforts—political commitment, media coverage, regulations—can deliver results, even at the grassroots level.
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