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Apex predators are essential in order for our ecosystems to thrive. One of the most impactful apex predators throughout the world are wolves. Wolves are not just an apex predator, but they are a keystone species. Keystone species are species which are critical to maintaining diversity and stability in the ecosystem which it lives. Unfortunately these magnificent animals have been over hunted and eradicated from their native territories throughout the United States and world. California is one of the states where wolves have been hunted to extinction in the early 1920s. The exciting news is they are now back, and have migrated through Oregon to California, making it all the way to the Sequoias in Tulare County! That's less than 100 miles from our facility!
Many people are excited about this, yet many others are skeptical or even fearful and wonder how this will have a positive impact on this state. We will address some of the most common concerns and questions later, but first lets discuss how California's ecosystem can thrive from the reintroduction of its native keystone species (wolves) by examining the changes they made to Yellowstone's ecosystem and wildlife as a whole.
After wolves were reintroduced to Yellowstone, balance was restored. Wolves are essential for controlling the population of large grazing mammals, such as deer, elk, bison, and moose populations, since these animals are the main source of food for wolves. In Yellowstone, the absence of wolves allowed these animals to overpopulate the park, and hence over graze the vegetation and demolish tree populations/ saplings that are essential to sustain other animal species. The absence of this vegetation, such as Aspen, Willow, and Cottonwood meant the absence of the animal species that benefit from it, such as beavers, several bird species, and even fish. Beavers feed on Aspen and Willow, so when vegetation was restored, so were the beaver populations. With increased beaver populations and beaver ponds, there was also an increase in aquatic life that live in beaver ponds. The presence of vegetation and grasses around the riverbank also prevents erosion. Erosion from reduced vegetation causes the river to widen and become more shallow and warm, thus impacting the species of fish, reptiles, and amphibians that need cooler temperatures to survive. Elk are less likely to over graze the vegetation around the riverbank where the ecosystem is most fragile with the presence of wolves. The vegetation and trees that grow along the riverbank also provides nesting areas for various bird species, and shade over the water which keeps the water temperature cooler as well to sustain Salmon and other fish species. Wolves also control coyote populations, which decreased by nearly 40% in yellowstone after the wolves were reintroduced. Pronghorn are one of the main food sources for coyotes, so when there was an overpopulation of coyotes, the pronghorn populations were nearly wiped out. Pronghorn populations have returned after wolves were reintroduced to Yellowstone. Decreased coyote populations also allowed for smaller mammals and rodents that were being over hunted by the coyotes to repopulate as well, which then increased the food source of other animals such as birds of prey. Animal carcasses from wolf kills also serve as food for scavenger populations as well as provide nutrients to the soil and and increase nitrogen levels. Coyotes and other scavenger animals such as wolverines, foxes, eagles, raccoons, ravens, lynx, cougars, weasels, and grizzley bears would feed on the carcasses left behind from wolf kills. Therefore their populations also benefit from the presence of wolves. The Sierra Nevada Red Fox is a critically endangered fox species that is native to the Sierra Nevada mountain range. Imagine how wolves coming back to the CA Sierras will increase their food supply, increase their survival and, therefore help increase their populations to help prevent their extinction! Wolves are also responsible for strengthening the herds of the deer, elk, and moose populations. By preying on the sick and weak, only the strongest survive to reproduce which promotes stronger and more resilient herds. Also by killing the sick and weak Elk, the wolves have reduced the transmission of deadly diseases in the herds such as Chronic Wasting Disease. By reducing the lifespan of sick animals, the wolves are also reducing or limiting the time which the disease can be spread. The herds also live and travel in smaller numbers with the presence of wolves which also limit the populations which the disease spreads. These are clear examples of how the wolf is essential to promoting a healthy and balanced ecosystem, their benefits trickle down to all plant and animal populations.
Lets take a moment to quickly address some concerns and fears that many people have. Some of these topics are addressed in more detail in other sections of the website:
1. Does the public need to be concerned about safety or wolf attacks?
The answer to this question is no. Wolves are fearful of humans by nature. Due to having been severely over hunted, the wolves who have survived are the ones that fear people and avoid them. A wolf is not aggressive by nature, the only time a wild wolf will attack you is if you corner or trap them and give them no way out, or pose a threat to their pups. Don't do these 2 things, and you will be fine. They have a very strong and natural fear for humans. They do not hunt, or kill humans for food. Unfortunately Hollywood has painted a very ugly picture of wolves leading people to believe that they are man eating and dangerous beasts, but this is far from the truth.
2. Can Farmers and Wolves co-exist?
Absolutely. Many farmers are against wolf populations due to loss of livestock from wolf kills. California farmers have become accustomed to not having the nuisance of wolf populations affecting their livestock, and many of them are opposed to having to adjust and invest in some of the options out there that will keep their livestock safe without eradicating the wolf species to do this. Please note there are also farmers that are for the return of the wolf, and willing to compromise or invest in these options so they can still respect wildlife populations. One way farmers can keep their livestock safe are with livestock guardian dogs. Dogs such as Kangals and Anatolian Shepherds live outside with livestock and protect them from all kinds of predators. These have been a very effective means to protecting livestock from wolf attacks. Please take the time to look up some information and youtube videos to learn more about this dog breed. Another way that farmers can keep their livestock safe is to fence them in, or in other words, fence the wolves out. This requires heavy duty fencing which is very expensive, making it unappealing and inconvenient. However it is a one time cost, and will prevent losses in livestock. Perhaps the government can also assist by offering grants or assistance to farmers and ranchers?
3. Will my small dogs or cats be safe?
If you live in the city, it is a simple yes. Unlike coyotes who are less fearful of people and venture into some parts of populated areas, wolves avoid them at all costs. If you live in remote areas with wildlife where wolves are present, you probably shouldn't be letting your small animals roam around outside unsupervised or uncontained regardless of the presence of wolves. California also has mountain lions, bears, and coyotes that are equally as capable of eating small pets, so if you live where there are wildlife populations, you should be careful regardless if wolves are a part of the predator population or not. However coyotes are more likely to go after the small animals than wolves where people reside.
These were the top 3 questions that we have encountered from those who are skeptical about wolf populations returning to California. Here at our facility we are hoping to educate the public and put these concerns to rest and help people see how wolves in California can promote a healthy ecosystem in this state they are native to.
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