Yet biodiversity is in serious danger, now more than ever. Species are going extinct between 1,000 and 10,000 times faster than normally happens in nature. Global wildlife populations have dropped by an alarming 69%<\/a> on average since 1970. Some experts now believe that we\u2019re witnessing the sixth mass extinction event in Earth\u2019s history. Biodiversity loss<\/a> is happening as a result of human activity and climate change<\/a>.<\/p>\n\n But what does biodiversity mean, and why is it so important to us? What are the causes and effects of biodiversity loss? And more importantly, what can we do to protect it?<\/p>\n\n Biodiversity, also known as \u2018biological diversity\u2019, is the variety of life found on Earth. It includes all living things, like bacteria, plants, fungi, insects, animals, and humans. But it is not simply the number of species in an area. It also includes the number of individuals per species, and the balance of different species\u2019 populations. This is influenced by different environmental pressures and mechanisms of evolution, like genetic mutation<\/a>. And the end product is the rich diversity of life we see today.<\/p>\n\n <\/p>\n\n Biological diversity is not spread evenly either. Some areas, such as the tropics, have high biodiversity. For example, the Amazon rainforest<\/a> is one of the richest biodiversity hotspots on our planet. It is also home to more than 30% of the world\u2019s species. Other areas, like the cold Arctic, have low biodiversity compared to the tropics. But they support unique, iconic species, like the polar bear, that have adapted to life on this frozen continent.<\/p>\n\n Biodiversity is the life-support system of our planet. We rely on it for food, energy, medicine, fresh water and soil purification, pest control, breaking down waste and many, many more. Without it, the environment couldn\u2019t provide us with the things we need to survive.<\/p>\n\n Places that contain high biodiversity are also able to cope better with changes<\/a>. They are more resistant to natural or human-related disturbances, such as climate change. They can recover quickly after major disasters, like wildfires.<\/p>\n\n The diversity of life also has significant economic value<\/a>. Economists use the idea of \u2018ecosystem services\u2019 to describe the useful things a healthy environment provides humans for free. Many industries, like tourism, agriculture, and pharmaceuticals, rely heavily on ecosystem services.<\/p>\n\n Biodiversity also has immense cultural, spiritual and aesthetic value. Certain animals and plants hold great significance in many cultures.<\/p>\n\n The current state of global biodiversity is quite alarming. We are losing many more animals and plants than in the past. This loss of species is estimated to be 1,000 to 10,000 times greater than what happens naturally. And it shows no sign of slowing down.<\/p>\n\n WWF\u2019s Living Planet Report<\/a> shows that wildlife populations have declined by an average of 69% since 1970. This is particularly the case in the tropical regions, which are also home to some of the world\u2019s most biodiverse landscapes. Also, over 150,300 species are on the IUCN Red List<\/a>. 42,100 of these are in danger of extinction in the wild. They include amphibians, mammals, birds, sharks, rays, corals, and conifers.<\/p>\n\n The current figures on biodiversity loss show us how much we have affected the planet. Almost all of Earth\u2019s ecosystems have seen dramatic changes over previous generations. Animal species are disappearing before they have even been discovered. And some experts believe we are in the midst of a sixth mass extinction<\/a>. If many species die off at once, or on a large scale, there will be fewer or no species to fill the vacuum. And the delicate balance of nature is lost. This is of real concern because we depend on many important ecosystem services, including clean water, fresh air and sustainable food production.<\/p>\n\n The loss of biodiversity is mainly caused by human disturbances on land and at sea. Human activities, like farming and livestock grazing, are affecting land and freshwater ecosystems. We are also cutting down more trees, altering and fragmenting habitats, and driving endangered species closer to extinction. And, in many cases, these threats are interconnected. They often act together to have a much bigger, lasting impact on a global scale.<\/p>\n\n Climate change<\/a> is mostly driven by the burning of fossil fuels<\/a>, such as coal, oil and gas. It is also a consequence of other activities, like cutting down forests for farming and livestock grazing. This releases greenhouse gases, warming the planet and destabilising the climate.<\/p>\n\n The climate crisis is having serious impacts on biodiversity<\/a>. It disrupts the lifecycle of animals and plants, as well as their behaviour, such as annual bird migration. It affects life on land, like the catastrophic 2019\u201320 Australian bushfires<\/a> that affected nearly three billion animals. At the same time, rising CO2 levels are endangering sea life by raising ocean temperatures and acidity levels.<\/p>\n\n Deforestation<\/a>, habitat loss and fragmentation are among the biggest threats to biodiversity. When a habitat is fragmented, it\u2019s divided up (by roads, for example) leaving behind a number of isolated, smaller pieces of the original habitat. This makes it harder for animals to move, feed and mate freely. It also affects ecosystem processes that rely on the movement of species, like nutrient cycling and seed dispersal.<\/p>\n\n Habitat loss is especially bad in the tropics, which are home to much of the world\u2019s biodiversity. In 2022, we lost more than 16 million acres of forest<\/a>, according to the 2023 Forest Declaration Assessment.<\/em><\/p>\n\n <\/p>\n\n Agriculture<\/a> is the leading cause of deforestation. This is followed by illegal logging, mining and the building of roads and dams. In South America, local farmers and large agribusinesses are clearing forested areas for cattle grazing and growing soybeans<\/a>. This is happening on such a massive scale that it is the single biggest driver of deforestation in the world.<\/p>\n\n Overfishing<\/a> is one of the main causes of marine biodiversity loss, especially when you look at the current trend. It is estimated that around 80% of the world\u2019s fish stocks<\/a> are already over-exploited, depleted, or on the brink of collapsing. Worldwide, 90% of the stocks of large predatory fish<\/a>, such as sharks, tuna, marlin, and swordfish, have already collapsed as a consequence of overfishing. There is a serious risk that commercial fish species may not be able to recover unless urgent measures are put in place to protect our oceans.<\/p>\n\n Other human activities, like climate change and plastic pollution<\/a>, are also affecting sea creatures and their habitats. These disturbances underwater are disrupting food chains and reducing population sizes. And ultimately, overexploitation drives species towards extinction, resulting in marine biodiversity loss.<\/p>\n\n The extraction and use of fossil fuels<\/a>, like coal, oil and gas, also play a role in polluting and destroying habitats. This can be devastating for marine and coastal biodiversity. Not only this, but it also affects human communities near extraction sites and oil pipelines.<\/p>\n\n For example, the Deepwater Horizon oil spill<\/a> is one of the largest offshore oil spills that released 134 million gallons of oil in the Gulf of Mexico. As well as the immense human cost<\/a> of the disaster, it killed thousands of marine mammals in the immediate aftermath. But there were long-term impacts too. Exposure to oil and absorbing contaminants through the skin can have a lasting effect on marine life. Oil spill effects can last for years or even generations<\/a>, reducing their chances of survival and reproductive success. This leads to a decline in wild populations and a loss of biodiversity over time. The health effects of oil spills on humans<\/a> are well studied and documented, too.<\/p>\n\nWhat is biodiversity?<\/strong><\/h2>\n\n
Why biodiversity is important<\/strong><\/h2>\n\n
The current state of global biodiversity<\/strong><\/h2>\n\n
The main causes of biodiversity loss<\/strong><\/h2>\n\n
Climate change and global warming<\/strong><\/h3>\n\n
Deforestation, habitat loss and fragmentation<\/strong><\/h3>\n\n
Overfishing and overexploitation of the seas<\/strong><\/h3>\n\n
Extraction and use of fossil fuels<\/strong><\/h3>\n\n
![\"\"\/](\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdeKyIju0q2j350s8uyoSYFsNKN4LQWVlu0XxmmGyi9haa-HdW-yzHLvWMpAmo1VE8YOI10vSH1kKFJbJ7Ow6DS8M5fU6DNinM-0kq-4wEjjUrRygGZ-K0PF6RjB0VzsKhPzc6xErwRrN9d48n2ef-v7Oo?key=1_vvlwgOzOFPESTog0TsnQ\")
![\"\"\/](\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXf-jjNjhe-KFpCv4HFnOPPtcKn2hUkHfddDX0Yvb5p2BTPfdlgfqACAzdLU5EahPDMdP-Sk1WDhwH5FzATVVsC5eKA3QflMIdFAWGMVVb7dJ9rXLWkIJDgHVLAFc8p-fLkRngQ9RZ7dKd5xT5m2sstrYRI?key=1_vvlwgOzOFPESTog0TsnQ\")