Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Human impacts on Animals in Kansas
Transcript of Human impacts on Animals in Kansas
What are we doing to cause this?
Humans are pumping chemicals into the water, over hunting, and destroying the vast grasslands of the Kansas prairie.
Kansas Prairies are Disappearing
Before humans arrived prairie fires weeded out old growth and gave birth to new. With the addition of humans, homes have taken over vast prairies and put out these natural fires.
When grasslands are converted into cropland, it reduces the food source for many wild animals. In this case, the animals are considered pests by the farmers when they feed on the crops. This can lead to migration or possibly the starvation of the animals.
Human impacts on Plants and Animals in Kansas
Humans are responsible for causing many changes in the environment that hurt plant and animal species. Human activity often changes or destroys the habitats that plants and animals need to survive. Because human populations are growing so fast, animals and plants are disappearing 1,000 times faster than they have in the past 65 million years.
Not only does the conversion of land into crops change the ecosystem, but so does the farming of livestock. If livestock are allowed to graze in areas where wild animals live, they compete over the food source and can deplete it. Overgrazing is a problem especially in the drier grassland regions, where the grasses resources can be depleted. The land can also be plowed too much, stripping the nutrients from the soil.
Overgrazing is a problem especially in the drier grassland regions, where the grasses resources can be depleted. The land can also be plowed too much, stripping the nutrients from the soil.
Kansas Lakes & Streams
Marine species fell by 28 percent in the period of 2005-2010.
Kansas Lakes and Streams
50 lakes were randomly selected across Kansas. Samples were collected and analyzed for 125 chemicals. The study included analysis of “endocrine-active compounds” (EACs), so called because they mimic or interfere with the actions of naturally occurring hormones. These chemicals can have adverse effects on aquatic ecosystems and fish.
Kansas Lakes and Streams
Results of the lake study were generally consistent with findings of previous but smaller studies that found commonly used chemicals widely distributed in Kansas lakes. The insect repellent DEET was found in 76% of the lakes sampled, making it the most frequently detected chemical.
Kansas Rivers & Streams
The scientists think these chemicals can cause the hearts of fish embryos to beat slower and slower, resulting in heart deformities and a buildup of fluid around the hearts.
Pollution of Lakes and Rivers
Chemicals are ending up in aquatic ecosystems in part because many municipal wastewater treatment plants do not filter out chemicals completely, including the estrogen women excrete in their urine after taking birth control medications
Farming is another way that Pesticides have majorly impact plant and animals life in Kansas by infiltrating drinking water along with rivers and lakes.
Invasive Species in Kansas
Humans have also introduced non-native plants and animals into Kansas. The cost to control invasive species and the damages they
inflict upon property and natural resources in the U.S. is
estimated at $137 billion annually.
What Is an Invasive Species?
A species is invasive when it is both nonnative to the ecosystem in which it is found and capable of causing environmental, economic, or human harm. Invasive species often compete so successfully in new ecosystems that they displace native species and disrupt important ecosystem processes.
How do invasive species get here?
Invasive species are often taken from their native lands and brought into the United States and let go into lakes, streams, rivers, and prairies. Some animals are let go as pets and others for food sources or by accident.
More examples of non-native species
Purple Loosestrife: From Europe and Asia. Introduced in the 1800s as medical solutions. They displace native wetland plants has less food and habitat value for waterfowl and other wildlife.
The environmental impact of pesticides is often greater than what is intended by those who use them. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, including nontarget species, air, water, bottom sediments, and food.[
Hunting has had and continues to have a serious impact on the biome. The American bison popuilation was devastated by the European settlers and almsot became extinct due to overhunting for the fur and meat of the animal.
Zebra mussels: Zebra mussels are native to the Black and Caspian Sea in Europe. Zebra mussels are a problem because they filter water, up to a liter a day, to eat plankton. Although this filtering action may clear up the water, clear water does NOT mean clean water and the clear water zebra mussels leave behind will often lead to algal blooms that are harmful to people. The clear water can also let UV rays damage fish eggs laid during the spawn.
Pesticides can contaminate unintended land and water when they are sprayed aerially or allowed to run off fields, or when they escape from production sites and storage tanks or are inappropriately discarded.
Nitrogen fixation, which is required for the growth of higher plants, is hindered by pesticides in soil. The insecticides DDT, methyl parathion, and especially pentachlorophenol have been shown to interfere with legume-rhizobium chemical signaling.
Pesticides can kill bees and are strongly implicated in pollinator decline, the loss of species that pollinate plants, including through the mechanism of Colony Collapse Disorder, in which worker bees from a beehive or Western honey bee colony abruptly disappear. Application of pesticides to crops that are in bloom can kill honeybees,
Widespread application of pesticides can eliminate food sources that certain types of animals need, causing the animals to relocate, change their diet, or starve. Poisoning from pesticides can travel up the food chain; for example, birds can be harmed when they eat insects and worms that have consumed pesticides.
Fish and other aquatic biota may be harmed by pesticide-contaminated water. Pesticide surface runoff into rivers and streams can be highly lethal to aquatic life, sometimes killing all the fish in a particular stream.
Humans are destroying Kansas prairies at a very fast rate. As a result, Kansas plants and animals are disappearing. Humans have introduced non-native species into the ecosystem that are competing with native plants & animals for resources.
Kansas prairies Wrap Up
When you add in all the chemicals being pumped into the water it can have a terrifying effect on the plants and animals in Kansas.
Examples of non-native species
Asian Carp: They were imported here for aquaculture purposes in the 1970s. Asian carp directly compete with other fish for food resources. Asian carp grow quickly and feed quite frequently. They also are known to jump out of the water and leap onto boats and hit fishermen and anyone else unfortunate enough to get hit.
Examples of non- native plants
More examples of non-native plant species
Chinese Bush Clover: Introduced in 1896 and
later used for livestock forage and soil erosion
control. Displaces native vegetation,
alters habitat and increases land
management costs; identified as
a noxious weed in KS
Kansas Prairies Wrap Up