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What is the Biodiversity Crisis?

The diversity of life on earth is under threat. Learn what the biodiversity crisis means, why it matters, what biodiversity is found near you, and how to help.
CEO Anne Bowser and VP for Conservation Science, Regan Smyth discuss what we mean by biodiversity and why it is in crisis in the United States.
NS logo graphic with images

34% of plant species

are at risk of extinction
Almost half of cactus species, about 200 tree species, and nearly 1 in 5 grass species are at risk.

40% of animal species

are at risk of extinction
Animals found in freshwater habitats, including amphibians, snails, mussels, crayfish, and many aquatic insects, are most at risk.

41% of ecosystems

are at risk of range-wide collapse
Temperate grasslands are among the most threatened ecosystems, with over half of known types to be at risk.
Wes Knapp, Chief Botanist, and Don Faber-Langendoen, Senior Ecologist & Conservation Methods Coordinator, explain what it means for a species to go extinct and highlight the value of ecosystem conservation.

Understanding the Threats

Human activity is destroying thousands of species’ homes.

Soybean field
Soybean Field. Photo by United Soybean Board.
Habitat loss occurs when a natural area becomes incapable of supporting its native species, resulting in the displacement or destruction of its biodiversity. Although habitat loss can be caused by natural disasters or geological changes, it is most often caused by human activities such as logging, mining, agricultural land conversion, recreation, and pollution.

From parrots to pangolins, millions of animals and plants are sold illegally each year.

Venus Flytrap
Venus Flytrap (Dionaea muscipula), NatureServe Global Conservation Status: Imperiled (G2). Photo by Tatiana Bralnina.
Each year, thousands of wild plants and animals are caught or harvested and then legitimately sold as food, pets, or medicine. Hundreds of species are also sold or exchanged illegally. In addition to being one of the major drivers of extinction, illegal wildlife trade facilitates the proliferation of invasive species and can cause disease outbreaks. Some examples of illegal wildlife trade are well known, such as the poaching of elephants for ivory; however, countless other species, such as bighorn sheep and Venus flytraps, are also exploited, and the United States is one of the largest consumers of illegal wildlife products in the world.

Invasive non-native species overwhelm their local counterparts.

Emerald Ash Borer
Emerald Ash Borer (Agrilus planipennis), NatureServe Global Conservation Status: No Status Rank. Photo by U.S. Department of Agriculture. Emerald ash borer damage in wood. Photo by Anna Hesser.
Often spread by human activities such as trade and tourism, invasive species pose a significant and growing threat to native biodiversity. They compete with native species for resources and often have no native predators to keep their numbers in check. In North America, invasive species such as some grasses, insects, fishes, and mussels have transformed terrestrial and freshwater ecosystems, threatening 47% of imperiled species in the U.S. and Canada. For example, the emerald ash borer is a wood-boring beetle native to Asia. First detected in the United States in 2002, it is now present in at least 35 states and has killed millions of ash trees.

Climate change is affecting the migration, reproduction, and survival of millions of species.

Migratory birds
American flamingoes (Phoenicopterus ruber) in flight. NatureServe Global Status: Apparently Secure (G4). Photo by wirestock.
Rising temperatures, ocean acidification, and extreme weather events affect the ability of species to survive and reproduce. In addition, climate change can alter the timing of natural events. For example, many North American bird species are migrating earlier due to warmer temperatures.
Chief Scientist Bruce Young talks about many of the threats that species and ecosystems face across the United States.

Why it Matters

Biodiversity in Everyday Life

Biodiversity touches nearly every aspect of our lives.  Whether or not you realize it, you interact directly with biodiversity all the time: from the prescriptions in your medicine cabinet to the clothes in your closet, many of the items you consume, wear, and use each day are actually biodiversity in disguise. Biodiversity is a vital component of our well-being and prosperity.  Let’s take a look at a few examples.
 

Biodiversity is the Earth’s grocery store.

Bees, tomatos
Black-and-gold Bumble Bee (Bombus auricomus), NatureServe Global Conservation Status: Secure (G5). Photo by Dan Mullen. Tomatoes on Green Plant. Photo by orcearo.
Nearly everything we eat or drink comes from the plants and animals that make up biodiversity. Close to 75% of the world’s crops depend on pollinators such as bees, butterflies, and bats for sustained production and yield. Beverages rely on biodiversity too – we need agave to make tequila, grapes to make wine, grain to make beer, and coffee beans to make coffee.

An apple (or turmeric root) a day keeps the doctor away.

Tumeric
Indian Turmeric Powder and Root. Photo by Antonina Vlasova .
At least 40% of medical drugs come directly from biodiversity and about half of the drugs approved for use in the past 30 years come from nature. Across the world, scientists are exploring new scientific breakthroughs inspired by biodiversity, from using turmeric to reduce inflammation and relieve arthritis pain to researching sea cucumbers to treat stroke, Parkinson’s disease, and spinal cord injuries.

Your home, clothes, and belongings are made of biodiversity.

Cotton and tree trunks
Cotton. Photo by Galyna_Andruskho. Stacked Tree Trunks. Photo by ABBPhoto.
The natural materials that we use to build our homes, clothe ourselves, and power our lives come from biodiversity. For example, we build furniture and houses with wood from trees, we make clothes from cotton, and we burn fossil fuels made of plant and animal remains to create electricity.

Plants and other living organisms regulate our climate.

Green Forest
Redwood trees (Sequoia sempervirens). NatureServe Global Status: Apparently Secure (G4) Photo by Sundry Photography.
Terrestrial and marine ecosystems, including rainforests, wetlands, and kelp forests, play an important role in regulating our climate, absorbing roughly half of human-made carbon dioxide emissions. Lichens (plant-like organisms comprised of algae and fungi) trap particulate matter and absorb pollutants from the atmosphere, while trees provide a cooling effect by shading the Earth from the sun’s rays and releasing water into the air through their leaves.

Wetlands reduce flooding and mitigate the effects of natural disasters.

Wetland
Long Meadow Lake Unit Minnesota Valley National Wildlife Refuge. Photo by Tina Shaw, U.S. Fish and Wildlife Service.
Biodiversity plays a critical role in flood control. Wetlands prevent flooding by temporarily storing and then slowing the release of storm water. In many tropical regions, mangroves reduce waves and storm surges, serving as the first line of defense against flooding and erosion.

Species work together to engineer the ecosystems in which they live.

Beaver and woodpecker
American Beaver (Castor canadensis), NatureServe Global Conservation Status: Secure (G5). Photo by Tom Murray. Pileated Woodpecker (Dryocopus pileatus ), NatureServe Global Conservation Status: Secure (G5). Photo by Harry Collins Photography.
Many species are “ecosystem engineers” that create, modify, and maintain habitats, in turn affecting the availability of resources for other species in the environment. As examples, wild horses dig wells in deserts, providing water to other wildlife; beavers build dams, creating habitat for fish, birds, and other mammals; and woodpeckers create tree cavities that are often used by other species.
Hear from NatureServe staff about why they care about biodiversity and why you should too.

Help Protect Biodiversity

 
 

Learn more about the species and program in your state using the map below.
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Blue-spotted salamander (Ambystoma laterale). NatureServe Global Status: Secure (G5). Photo by Adam Cushen (iNaturalist.org).

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Dive Deeper

Biodiversity in Focus
Biodiversity in Focus: U.S. Edition
Discover NatureServe's groundbreaking 2023 report for an in-depth look at the current status of species and ecosystems across the United States—essential reading for anyone passionate about conservation!
Explore At-Risk Biodiversity Near You
Explore At-Risk Biodiversity near you
Sign up for free on NatureServe Explorer Pro and unlock access to our powerful mapping tool, featuring a rich variety of biodiversity datasets from NatureServe and beyond. Explore countless layers and gain insights to support your conservation work!
Tour our Map of Biodiversity Importance
Tour our Map of Biodiversity Importance
Explore how this powerful tool is helping pinpoint essential areas for conservation across the U.S. and driving impactful biodiversity protection.
Learn more about Biodiversity and Climate Change
Learn more about Biodiversity and Climate Change
Find out how climate change impacts biodiversity, from shifting habitats to disrupted life cycles, and why protecting nature is crucial for building a resilient future for all.
This biodiversity awareness initiative was funded by:
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