Domestic pigs are a familiar farm animal, but have you heard about wild pigs? These animals are destructive pests with voracious appetites and eat a wide variety of plants and animals. It's estimated wild pigs cause $1.5 billion in economic damage to agriculture and the environment in California every year!
Where Did They Come From?
Domestic pigs were released in California in 1769 to be raised for consumption. Some of these pigs were not recaptured and became feral. In the 1920's, Russian wild boars were brought to California for sport hunting. Since both types of pigs belong to the same species, they interbred. Their descendants are called wild pigs.
Why are They a Problem?
Male wild pigs can weigh.../h2>/h2>
Invasive plants are weeds that infest natural ecosystems, rangelands and pasture. They can cause dramatic ecological changes that affect both plant and animal communities. Once established, invasive plants are difficult to eradicate.
In California, exotic plants were originally introduced by humans who planned to use them for ornamental or aquarium use, or for use as forage, food, fiber, medicinal or soil stabilization purposes. In some cases, the unintended outcome has been plants that have become invasive.
Some invasive plants are still for sale at retail nursery and garden centers. Some examples of available invasive plant species include pampasgrass (
It's National Invasive Species Week (February 27-March 3), which may prompt the question, “what exactly is an invasive species?” A truly invasive species is a non-native plant, animal or pathogen that causes or may cause economic problems, or threaten the environment or human health.
Why should this matter to you? Every 60 days, our state gains a new and potentially damaging invasive species. Because the things you do can directly impact the environment and economy of California, here are the top 10 ways:
- Learn about the invasive species that live in your region. Check with your county agricultural extension...
Today's post for National Invasive Species Week highlights two ambrosia beetles that are detrimental to certain trees. Ambrosia beetles are highly specialized beetles that excavate tunnels in usually weakened or dead trees and cultivate fungal gardens, which they feed upon. Below are two such invasive beetle-fungal complexes that are currently impacting trees and forests in California.
Walnut twig beetle and thousand cankers disease. Walnut twig beetle, Pityophthorus juglandis, is a tiny bark beetle that attacks only walnut trees. The beetle has been in California for many decades but recently became associated with a new fungus, Geosmithia morbida. The fungus kills the phloem and cambium of...
Did you know that every 60 days, California gains a new and potentially damaging invasive species? Once established, invasive species are extremely difficult to eradicate and can cause not only ecological disruption, but economic problems as well.
This week (February 21-27) is National Invasive Species Awareness Week. The goal of the week is to raise awareness and identify solutions to invasive species.
What is an invasive species? The term “invasive” is often used to describe something that appears to be taking over a garden or landscape. However, according to the National Invasive Species Council, a true invasive species is...