Introduction and Background
Plant species that are native to California offer unique and well-suited characteristics that greatly benefit the environment and promote biodiversity. Native plants are the foundation of the ecosystem, and have co-evolved with the local wildlife, fungi and microbes to create an efficient and functional ecosystem. Local wildlife have developed intricate, close-knit relationships with native plants, and rely on them. The wildlife rely on the fruits, nuts, and seeds of native plant species, as well as the unique shelter, seasonal weather protection and reproduction and nesting habitat. Native plants provide the building blocks for a thriving ecosystem with high biodiversity. Losses in biodiversity in our environment
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The remaining green spaces that are left are not large enough to support much wildlife, and often don’t supply the benefits that native plants offer. Non-native plants can be invasive, and generalist species can outcompete native plant species. This can create a burden on available nutrients and can cause issues in particular ecosystems to all of its inhabitants. Non-native plants sometimes require artificial fertilizers and pesticides due to the fact that they are not adapted to the environment that they have been placed into. Not only does this have a negative effect on the environment, but it also can have a negative impact on human health. The ways in which animals and plants have co-evolved with one another must be considered, when determining the impacts that non-native plant species can have in an ecosystem. For example, insects are an important food source for many animals, and are crucial for a healthy ecosystem. Different plant species have different ways of protecting themselves, many have distasteful or toxic chemicals. Insects who don’t have an evolutionary history with a plant species may not have the specific adaptations they need to be able to feed on them. This creates problems in the food web of that ecosystem. A study conducted in 2008, which focused on the …show more content…
One of the main benefits is saving water, since native plant species are adapted to local conditions, they often require less maintenance and less water, saving a valuable resource. Moreover, introduced species can hybridize with local species of the same family, thus threatening the local biodiversity. While introduced nonnative species are common in urban green spaces and aren’t always invasive or devastating to the local ecosystem, it is important to keep in mind the many impacts nonnative species have on native species and the ecosystem as a
Invasive species are non-native organisms that occupy habitats and disrupt the natural ecological cycles of the habitat. They threaten the biodiversity of an ecosystem and are biological pollutants Invasive species introduced into new habitats usually maximize their reproduction in their new home and crowd out native species. Their lack of natural predators in their new community allow for a proliferation in growth and expansion as a result of their abundant food supply. Once they are established, invasive species can rarely be eliminated because their new habitat is favorable for their survival.
We don’t often stop to consider the impact that simply living our human lives has on the other species that once called our neighbourhoods their home. The Fraser Valley, “one of the most important and complex ecosystems in the country” (Thom, p. 171), has been dramatically altered to make a more convenient landscape for housing and farming. In this process, critical habitat has been destroyed and many species that were once abundant have disappeared from our area (Cuthbert p. 24). Urbanization is ongoing and is thought to be the most significant threat to the incredible biodiversity found throughout British Columbia, and particularly the population-dense Lower Mainland (Harding, p. 355). Biodiversity, the “complex web that sustains life on this planet” (Austin, et al., p. 5), is vital for our survival as humans (Cuthbert p. 74). Any loss of biodiversity affects the entire ecosystem and all organisms within it (Fetene et al., p. 52). In the quest to house the ever-expanding human population, we must also consider habitat conservation and seek to preserve the rich biodiversity found in the Fraser Valley that supports and enriches our lives.
The first to use native dye plants in the United States were the Native Americans. Their culture was totally dependent on what the land produced. This is reflected in the wealth of information Native Americans possessed about useful plants, from medicinal to ceremonial and dye plants. This is reflected in the types of houses they built and the names of places (often after the plants that grew there). Early European colonists foolishly ignored the wisdom of the Native Americans and modern Americans are not much wiser. Americans need to learn about the plants and animals in our own country and how they can be useful to mankind. Instead of bringing non-adapted species of Europe to North America we need to learn what native adapted species can fulfill our needs and wants (Gilmore 1977). For example, we spend thousands of dollars feeding, sheltering, and caring for European cattle when we have native bovines, bison which are naturally adapted to the climate and environment. Melvin Randolph Gilmore sums this idea up well in the following quote:
This vegetation also provides much cover for fish. The aquatic plants provide a great source of food supply and act as a nursery for young fish (“Native” par. 5). Vegetation serves many purposes in fish habitat; besides keeping fish safe. It also helps keep the lakes clean. Aquatic plants cycle the water and help absorb pollutants. Another great benefit of these aquatic plants are that they help hold sediment and the banks of the lakes in place while providing oxygen into the water (“Invasive” par. 7-8). Unfortunately invasive species are destroying such vegetation. The Common Carp or “Cyprinus carpio” is one such fish that is causing great damages to lakes all around the world.
Timmons, J. B., Alldredge, B., Rogers, W. E., & Cathey, J. C. (2012). Feral hogs negatively affect native plant communities. Informally published manuscript, Texas AgriLife Extension Service, Texas A&M , College Station, TX, Retrieved from http://feralhogs.tamu.edu/files/2010/04/feral-hogs-native-plants.pdf
Landscape fragmentation contributes to loss of migratory corridors, loss of connectivity and natural communities, which all lead to a loss of biodiversity for a region. Conservation of biodiversity must include all levels of diversity: genetic, species, community, and landscape (CNHP 1995). Each complex level is dependent upon and linked to the other levels. In addition, humans are linked to all levels of this hierarchy. A healthy natural and human environment go hand in hand (CNHP 1995). An important step in conservation planning, in order to guarantee both a healthy natural environment as well as a healthy human environment, is recognizing the most endangered elements.
Through millions of years of evolution, well-balanced habitats have co-evolved to provide for the wide variety of species and their needs. Trees have adapted to weeds, weeds have adapted to the predation from herbivores, and so on up the food chain. Similar scenarios are seen throughout the world. Through the process of natural selection, specific species or broad species families will go extinct. However, these occurrences have largely been due to the natural flow and evolution of time. It wasn’t until recently that dominant species, such as humans, have taken the course of nature into their own hands.
When we hear about an endangered species we auto, automatically think of great blue whales, African elephants, polar bears, pandas, etc. These are highly publicized by the media and documentary makers. People are aware of this endangered species but not of the less popular endangered species that are in our own backyard. Based on published historic range and population there is roughly 317 animal and plant species endangered in California. The endangered species are protected under the federal and state Endangered Species Act. Under this act species are protected from being taken from their environment, creates a safe habitat for animals to thrive again, restore population numbers, etc. One of the animals in central California that is listed as being endanger is Vulpes macrotis mutica, commonly known as the San Joaquin kit fox. The San Joaquin Kit Fox habitat has been listed by the United States National Wildlife Services as endangered since March third, 1967. The kit fox has been in the endangered, due to its inability to adapt to the changes in their habitat due to humanity. After 46 years a healthy San Joaquin kit fox population is yet to be achieved.
Destroying the habitat of different plants and animals, they no longer have a place to live. Their food source and nutrients are taken away and have nowhere else to go. These organisms will die out and there will be a loss in the diversity of that ecosystem. That ecosystem can then start to crumble as the habitats are taken away and the plants and animals have no home. With no habitat in which the organisms can live in, there is going to be very little diversity.
Invasive species, (also known as invasive alien species or simply alien species) are defined as any organism (plant, animal, pathogen, or other living thing) that is alien (non-native) to an ecosystem, which can cause adverse economical, ecological, or health effects to native species and/or humans. The roots of these problems all stem from the massive negative ecological impact these organisms are having on the environment (CBD, 2009). For all animal extinctions where the cause is known since the 1600’s, invasive alien species have been a contributing factor 40% of the time (CBD, 2006); the second most contributing factor to extinctions after loss of habitat (GC, 2013). By eliminating native species through competition for resources, predation, and transmittal of disease, invasive species continue to reduce biodiversity in almost all ecosystems around the world (CBD, 2009). In the future, this problem may worsen, and if no action is taken, could lead to a cascading ecological problem so large that whole communities or even ecosystems could collapse.
Various plant and animal species depend on each other for what each offers and these diverse species ensures natural sustainability for all life forms. A healthy and solid biodiversity can recover itself from a variety of disasters. It is estimated that the current species extinction rate is between 1,000 and 10,000 times higher than it would naturally be. Therefore, there is an urgent need, not only to manage and conserve the biotic wealth, but also restore the degraded ecosystems. c) Captivity breeding species can again be reintroduced into the wild.
According to World WildLife Fund, many ecosystems around the world are being destroyed, eliminating many plant and animal species that inhabit them (“Pollution”).
Many of the issues of biodiversity loss can be traced back to human interaction to the environment. One of the issues is alteration and loss of habitats. A lot of this issue is based on the destruction of habitats and for the land to be used for human consumption. The land is either used up for agricultural use or for neighborhoods. Destroying habitats and building them for our own use can have a positive impact on our way of living but a negative impact on the environment. We would gain land for building land for crops and communities to be built. The habitat for the animals would be destroyed and the species local to the land would either relocate or die. There are restrictions to deforesting land and there are organizations to help protect the land.
One of the reasons for loss in biodiversity is alteration of habitats. A habitat is the natural environment in which a species of living organism lives. If the habitat of a species is changed, it will cause the species to die or migrate to other places where it can find its natural habitat. There are many ways in which the habitat of plants and animals can be altered. One of them is land use changes. Since the beginning of human life, human beings have been changing land use for farming. Large areas of forests have been cleared by humans to increase the area of farming to satisfy their growing needs. Many biodiversity-rich landscape characteristics have been lost due to intensive farming (Young, Richards, Fischer, Halada, Kull, Kuzniar, Tartes, Uzunov & Watt, 2007). For example, traditional farming was replaced by private farms in Europe after the First World War causing an immense change in land use patterns. Another major proble...
Pollution can have an impact on our health, not only affecting people with impaired respiratory systems such as asthmatics, but very healthy adults and children too. Plants can be a benefit for pollution in the air, trees, bushes and other greenery growing in the concrete-and-glass canyons of cities can reduce levels of two of the most worrisome air pollutants by eight times more than previously believed. The more trees we can plant the less pollution we get and more air than just having a huge land and having abandoned buildings taking up space. To solve water pollution is to conserve soil, the best way to combat soil erosion is to keep the banks of waterways well-covered with soil-retaining plants.