Rolando Mascareno
Professor Gary Pivo
GEOG 256
16 November 2017
Urbanization and Wildlife
Biodiversity, the abbreviation of biological diversity, is the set of all beings of the planet, the environment in which they live and the relationship they have with other species. It is composed of living organisms, as well as all ecosystems, and all the relationships they establish with each other and how living organisms can change from one place to another over time. As the human population and technology advances increase, more significant and widespread problems appeared. The rapid technological advance and urbanization produced after the Middle Ages culminated in the industrial revolution, which brought with it the discovery, use and
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Another effect of urbanization towards wildlife, as stated by Pivo, is habitat fragmentation. This means the creation of isolated patches or islands. The risk of extinction from catastrophic disturbances increases as well as the edge effect. According to the readings, the edge effect affects the natural core interior and larger patches help to reduce this effect. Sarah Friedl who is a biologists say that “when habitats become fragmented, their edges often become more abrupt and transition less smoothly than they would naturally” (Friedl, 2013). Also, repopulation and dispersal are reduced by habitat fragmentation. The leading causes of habitat fragmentation are parking lots, roads and house buildings, which are all created by urbanization.
Wildlife is also affected by urbanization because it alters ecological processes with fire suppression and flood control. As described in Pivo’s powerpoint if these processes are affected the flora and fauna can be altered. With urbanization, many water streams are lost or significantly altered, as a result of channelization (Meyer and Wallace 2001). Channelization is the modification of channels to provide flood protection with the goal of moving floodwater more quickly downstream. This has long-term consequences like contamination and decreased species richness. Piping is also a major cause of altering ecological processes and it refers to the construction of pipelines.
. Also, urbanization causes predation effects since it
The destruction of various ecosystems through modalities such as bulldozers, cranes, and irrigation systems have shaped the current state of the world. As countries continue to industrialize many parts of the world are becoming increasingly urban. The desire to turn undeveloped areas into bustling cities has been exorbitantly transformative in the state of the world's ecosystems. Increasing populations resulted in a greater amount of socio-economic, agricultural and industrial activities (Schultz). Therefore, a high stress was placed on local ecosystems to meet those demands. Cities now lack
13. Urban Sprawl: Urban sprawl refers to migration of population from high density urban areas to low density rural areas which results in spreading of city over more and more rural land. Urban sprawl results in land degradation, increased traffic, environmental issues and health issues. The ever growing demand of land displaces natural environment consisting of flora and fauna instead of being replaced.
However, they disagree on whether or not it is harming the wildlife populations in those areas. Terris says “roads and sprawling neighborhoods are replacing pristine wildlife habitats at an alarming pace, putting the survival and reproduction of plants and animals at risk.” Terris also believes it may be “the problem for U.S. wildlife in the 21st century”. (Terris) According to Terris, one victim of sprawl is the Florida panther, which has been reduced to a population of 30 to 50 adults. Furthermore, in the Sonoran Desert many plant species are affected, which also affects the animals that rely on those plants. She goes on to give numerous examples of animals and plants that are being harmed that spreads across the U.S., supporting the fact it is widespread.
Actually, habitat fragmentation occurs when urbanization occurs. Fragmentation is when infrastructure increases and becomes more advanced, biological entities such as forests and plains are broken up. When these areas go from one large being to multiple smaller ones, the population of species splits up. Small habitat patches are usually not able to support the same level of diversity as they were when the area was a whole, and this ends to some species becoming endangered, even sometimes extinct (Kapoor). A study conducted in a Michigan forest that was fragmented due to rapid urbanization showed that predation increased for many bird species and
The main problem is that with urbanization people can really stop building our community. One solution is that we can preserve lands to keep them safe. There is also another solution of a bigger issue that may affect all animals, pollution. The problem of pollution is also another factor that affects all animal. There are somethings that people doing to stop this problem. In Pennsylvania the Eastern Spadefoot toads are considered to be a threatened
I researched the Everglades in Florida. There have been many negative changes in this habitat both from humans and other species. The region’s water resources are being depleted by invasions of exotic plants such as the Australian Melaluca. The Australian Melaluca also affected the native species of which the rest of the ecosystem depends. Another effect on the water is the runoff from agricultural operations, which gets into the water and pollutes it. Development pressures from agriculture, industry, and urban areas have destroyed more than half of the original Everglades
Biodiversity means the variety of life forms/organisms in an ecosystem, biome or entire planet. Globally, biodiversity is not evenly distributed. It generally increases from the poles towards the equator as around 50% of the world’s plants and animals live in tropical rainforests. This is because of the proximity to the equator causing a warmer, more moist, stable climate which means plants grow better and can support more species higher up in the food chain. Standard of living is the level of wealth, goods and
Roads act as barriers to animal movement and lead to habitat broken up . Many species will not cross the open space created by a road due to the threat of predators. Roads also cause increased animal deaths from traffic. the barrier effect can also prevent species from migrating areas where the species gone locally extinct as well as restricting access to seasonally available or widely scattered resources. Habitat separation may also divide large continuous populations into smaller more isolated populations. The smaller populations are vulnerable to genetic drift such as inbreeding depression and an increased risk of population decline and
The news article I chose is titled Songbirds Divorce, Flee, and Fail to Reproduce Due to Suburban Sprawl written by Michelle Ma (2017). This news article is about one of the potential effects of suburban sprawl. Suburban sprawl is defined as the expansion of the human population away from the urban areas. Many people argue that sprawl has many negative effects on the environment such as taking agricultural lands and forests and turning them into an industrial warehouse that causes additional pollution. The negative effect on the environment in relation to this article is the displacement of wildlife that could lead to extinction.
They also block travel of important nutrients and natural materials which are important for wildlife growth. Another significant impact is the upstream river section becoming a larger slack-water reservoir, which changes in temperature, oxygen levels and physical properties, ultimately modifying the wildlife species habitats.
Habitat fragmentation, loss and degradation - fragmentation, loss, and degradation of natural habitats, and has also contributed to habitat and species isolation.
Biodiversity presents occurrence of variety of species and their natural community in which they live. By the definition it is “The degree of variation of life forms within a given species, ecosystem, biome, or an entire planet. It is a measure of the health of ecosystems and is in part a function of climate.” (Rutherford) Ecosystem is on the other hand, “ community and its abiotic environment”( Rutherford). Biodiversity exists in every ecosystem, weather it is big one, or just ecosystem of one garden, it has the same importance because without it nature loses its ability to perform major functions needed for life on Earth, as it is oxygen production. Trough this investigation, two different ecosystems will be explored and
In addition, biodiversity will be crucial for humanities continued survival in the case of climate change or widespread crop failures. The majority of people on earth are reliant on four crops for subsistence; wheat, rice, corn, and millet. (11) These crops are threatened by climate change and the spread of disease facilitated by modern transportation. If humanity is to survive such an eventuality it must be ready to draw upon the earth’s biodiversity for replacements. And while there are approximately 50 thousand plant species that could offer alternatives, this bank of resources is quickly thinning as various ecosystems are being destroyed. (11)
Humans have existed since 200,000 years but the Earth has existed around 4.5 billion years. Nature has provided us with everything we have today - food, medicines, materials, chemicals, metals, minerals etc. It can only keep providing us when we maintain the right environment for it to exist. This environment depends on the biodiversity of Earth. The number of species of plants, animals and microorganisms and the various genes in these species, different ecosystems such as deserts, rainforests and coral reefs are all part of a biologically diverse Earth. Hence Biodiversity impacts everything. We will discuss how Biodiversity plays a crucial role on social, environmental, and economic factors. We will also discuss what
Franck and Brownstone define biological diversity as 'the variety and variability of living organisms and the biological communities in which they live' (36). Decades of progress in both the scientific and political arenas have advanced environmental legislation to protect biodiversity at not only the ecosystem level, but for specific species and genetic material as well. Research has shown the importance of every organism and their role in the global ecosystem, and legislation has gradually matured to protect not only species which may become endangered, but the habitats they need to survive as well. Growing consciousness surrounding environmental issues has enabled these protections to be