Logging, grazing, mining, and other human activities have left a legacy of non-native vegetation, eroded soils, and altered fire patterns in our national parks. Some former park management techniques, such as fire suppression and elimination of predators, have led to declines in the integrity of the original ecosystems. In addition, invasive species, pollution, and climate change continuously threaten these systems.
Mycorrhizal fungi extend from roots to provide vital plant nutrients while binding soil aggregates. (R.M. Miller)
The goal of ecosystem restoration is not to replace a static picture of the past. Instead, the National Park Service works to remove the barriers to ecosystem recovery. These barriers include biological or chemical contaminants, drained wetlands, channelized rivers, alteration of fire patterns, or lack of species to re-populate areas of parks. Whole-ecosystem approaches to management ensure not only the survival of species and scenic vistas, but also allows these systems to continuously evolve and change.
Showing posts with label miscellaneous. Show all posts
Showing posts with label miscellaneous. Show all posts
What is Ecosystem Restoration?
When you visit a park and reflect on the trees, rocks, landscapes, and incredible views, you are viewing and appreciating ecosystems. Ecosystems are collections of plants, animals, and micro-organisms interacting among themselves and with their habitat. While most ecosystems are hard to define and draw rigid boundaries around, scientists characterize them by their rock and soil types, by water features such as streams and ponds, and by the common plant and animal species which make their homes within these areas.
What is Ecosystem Management?
Ecosystem management brings an integrated perspective to natural resource management. It takes a “big-picture” approach, replacing short term, single species management with multi-species, long-term and large-scale approaches. For example, instead of managing for deer and elk to maximize viewing opportunities, the National Park Service manages for the entire ecosystem, considering not only deer, elk and other herbivore populations, but also vegetation, water flow, and predators and rare species. Ecosystem management also recognizes the influence of natural disturbances such as fire and windstorms, accepting that natural ecosystems are dynamic and change over time.
What is Ecosystem
An ecosystem includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere).
In an ecosystem, each organism has its' own niche, or role to play.
Consider a small puddle at the back of your home. In it, you may find all sorts of living things, from microorganisms, to insects and plants. These may depend on non-living things like water, sunlight, turbulence in the puddle, temperature, atmospheric pressure and even nutrients in the water for life.
This very complex, wonderful interaction of living things and their environment, has been the foundations of energy flow and recycle of carbon and nitrogen.
Anytime a ‘stranger’ (living thing(s) or external factor such as rise in temperature) is introduced to an ecosystem, it can be disastrous to that ecosystem. This is because the new organism 9or factor) can distort the natural balance of the interaction and potentially harm or destroy the ecosystem.
Usually,biotic members of an ecosystem, together with their abiotics factors depend on each other. This means the absence of one member, or one abiotic factor can affect all parties of the ecosystem.
Unfortunately ecosystems have been disrupted, and even destroyed by natural disasters such as fires, floods, storms and volcanic eruptions. Human activities have also contributed to the disturbance of many ecosystems and biomes.
In an ecosystem, each organism has its' own niche, or role to play.
Consider a small puddle at the back of your home. In it, you may find all sorts of living things, from microorganisms, to insects and plants. These may depend on non-living things like water, sunlight, turbulence in the puddle, temperature, atmospheric pressure and even nutrients in the water for life.
This very complex, wonderful interaction of living things and their environment, has been the foundations of energy flow and recycle of carbon and nitrogen.
Anytime a ‘stranger’ (living thing(s) or external factor such as rise in temperature) is introduced to an ecosystem, it can be disastrous to that ecosystem. This is because the new organism 9or factor) can distort the natural balance of the interaction and potentially harm or destroy the ecosystem.
Usually,biotic members of an ecosystem, together with their abiotics factors depend on each other. This means the absence of one member, or one abiotic factor can affect all parties of the ecosystem.
Unfortunately ecosystems have been disrupted, and even destroyed by natural disasters such as fires, floods, storms and volcanic eruptions. Human activities have also contributed to the disturbance of many ecosystems and biomes.
Environmental Science Introduction
1. Understanding Ecology and Ecosystems
2. Learning Objectives Define ecosystems. Compare Biotic and Abiotic Factors Describe food relationships found in nature.
3. Ecology Study of how organisms exist in their environment. Explains how nature is organized and the roles that each organism plays within its environment
4. Ecosystem Community of living and non-living things within an environment. May be large or small and include air, water, and land Two factors found within an ecosystem: Biotic Abiotic Always changing
5. Biotic Factors Living things found in an ecosystem. Includes plants & animals . Also is materials that were once living Need abiotic factors to live.
6. Abiotic Factors Non-living things found in an ecosystem. Include (but not limited to) water, temperature, type of rock or soil, light, pollutant levels.
7. Is it biotic or abiotic? Quia “Quiz” http://www.quia.com/quiz/244317.html
8. What is an ecosystem? Write down all of the differences you observe in this picture. Are there a number of ecosystems and different organisms thriving in this ecosystem? What biotic and abiotic components do you see?
9. Food Relationships in Nature All living organisms need some type of nourishment to live. usually comes from food.
10. Food Chain Order in which organisms obtain their food Each species has its own food chain.
11. The Main “Players” Producers Use energy from the sun to make food Living thing that makes its own food Start of all food chains Largest part of food webs Consumers Eat other living things for food to survive Decomposers Breaks down and feeds on the remains of once living things Usu. Bacteria and fungi Where do humans fit?
12. http://neuromanagement.files.wordpress.com/2009/03/food-chain.jpg
13. Food Web Formed by intertwined food chains Interconnection of food chains within a community. Animals are grouped according to the types of food they consume. These groups include herbivores, carnivores, and omnivores.
14. Herbivore An animal that eats only plants for food. Aka – Primary Consumer
15. Omnivores Animals that eat both plants and animals. Consumer
16. Carnivore An animal that eats only animals for food. Consumer
17. Other “Player” Names Predator Animal that hunts another for food Note: Top predators are at the very top of a food chain Prey The hunted Parasite Feeds off energy of other living things
18. Food Chains and Food Web Review Quia “Quiz” Food Chain Vocabulary “Rags to Riches” Food Chain Concepts “Rags to Riches”
2. Learning Objectives Define ecosystems. Compare Biotic and Abiotic Factors Describe food relationships found in nature.
3. Ecology Study of how organisms exist in their environment. Explains how nature is organized and the roles that each organism plays within its environment
4. Ecosystem Community of living and non-living things within an environment. May be large or small and include air, water, and land Two factors found within an ecosystem: Biotic Abiotic Always changing
5. Biotic Factors Living things found in an ecosystem. Includes plants & animals . Also is materials that were once living Need abiotic factors to live.
6. Abiotic Factors Non-living things found in an ecosystem. Include (but not limited to) water, temperature, type of rock or soil, light, pollutant levels.
7. Is it biotic or abiotic? Quia “Quiz” http://www.quia.com/quiz/244317.html
8. What is an ecosystem? Write down all of the differences you observe in this picture. Are there a number of ecosystems and different organisms thriving in this ecosystem? What biotic and abiotic components do you see?
9. Food Relationships in Nature All living organisms need some type of nourishment to live. usually comes from food.
10. Food Chain Order in which organisms obtain their food Each species has its own food chain.
11. The Main “Players” Producers Use energy from the sun to make food Living thing that makes its own food Start of all food chains Largest part of food webs Consumers Eat other living things for food to survive Decomposers Breaks down and feeds on the remains of once living things Usu. Bacteria and fungi Where do humans fit?
12. http://neuromanagement.files.wordpress.com/2009/03/food-chain.jpg
13. Food Web Formed by intertwined food chains Interconnection of food chains within a community. Animals are grouped according to the types of food they consume. These groups include herbivores, carnivores, and omnivores.
14. Herbivore An animal that eats only plants for food. Aka – Primary Consumer
15. Omnivores Animals that eat both plants and animals. Consumer
16. Carnivore An animal that eats only animals for food. Consumer
17. Other “Player” Names Predator Animal that hunts another for food Note: Top predators are at the very top of a food chain Prey The hunted Parasite Feeds off energy of other living things
18. Food Chains and Food Web Review Quia “Quiz” Food Chain Vocabulary “Rags to Riches” Food Chain Concepts “Rags to Riches”
Google Motorola News- Google Buys Motorola Mobility
Google agreed to buy Motorola Mobility for $12.5 billion, or a $40 share. The $40 a share represents a premium of 63 percent to closing price of Motorola mobility shares on Friday.
What is Motorola Mobility ?
Motorola Mobility is a leading developer of communications systems used in the wireless and cable television markets. From the past two years, this company has a focus on Android-based smart phones.
Motorola represents around 11 percent of Android phones. Google is planning to run Motorola Mobility as a separate business besides maintaining Android as open-source. Google stated that its top five equipment manufactures were all supportive of the deal.
Few Reasons why Google bought Motorola Mobility by paying High Price
1) Motorola and Google have a strong relationship with each other. Motorola was one of the first companies to adopt Android and they are using it as its sole operating system within their smart phones.
2) Google's Nexus S handsets are not a big hit in the market. By using Motorola's handset expertise in design, manufacturing, distribution, Google can get benefit from them.
3) Google's deal to buy Motorola Mobility seems to be an expensive deal. Without buying Motorola Mobility, Google can opt for buying license. As per market analysts, "An ownership of the 17,000-plus patents as a long-term offensive bet for the company in the wireless segment."
4) As per some market analysts, the high price does not seem unreasonable. As per market estimations, Google pays $3 billion plus in annual hidden patent fee costs to the Android and the $4.5 billion spent on the Nortel patents.
5) According to few sources, "HTC is currently paying Microsoft a $5 per handset royalty, and Microsoft is seeking a $15 per handset royalty from Samsung for the use of Android. As per Raymond James analyst Shyam patil "Assuming 200 million annualized Android devices at a patent royalty of $5-15 per device, the patent fees could have potentially cost the Android ecosystem $1-3+ billion per year".
6) The main intention of the deal is to defend the Android system from patent attacks from Microsoft, Apple and Oracle. Motorola patents will help Google in any potential issues. Motorola Mobility has more than 17,000 issued patents and 7,500 pending patent applications.
Top Indian 4G operators launching 4G technology in India soon
Read this article to know top Indian operators which are planning to launch 4G technology in India at the end of this year. We know that 4G technology is not released in India yet and many Indian service providers are conducting trails on the existing 3G networks so as to add some modifications in it and derive some fast technology. In this article I will discuss principle and techniques used by companies for launching 4G in India.
As we know that everyday some new product is launched in Indian market. It is electronics and computer's market which produces latest laptops and Smartphone's every day. When I am looking for latest features in HTC Thunderbolt Smartphone then I came to know that it is 4G mobile phone i.e. it will work fine with 4th generation technology but when we are talking about Indian then 4G technology is not yet come to India then how we access the features of 4G Smartphone in India. This question has great depth because 3G technology itself has so many complaints regarding its slow speed in some parts of India. It is Indian service providers whom earlier claim that their data card speed is very fast in comparison with other data cards but actually they all belong to same class.
Now companies like Aircel, Huawei and Qualcomm successfully tested an experiment which works on existing 3G, GSM and CDMA networks. Its growth not only restricted with existing networks but also includes new packages like LTE (4G) TDD and FDD networks. Moreover, many new operators are also conducting trails on 4G release.
In India, customers need fast access to internet connectivity which is equivalent to broadband services in cost effective rate. We are also familiar with the fact that wireless technology is costly because of high costing of 3G spectrum but still operators are putting their efforts to launch 4G technology in India that allows high internet speed in a less price. Many companies claimed that it will be less in cost because its construction is based on existing network infra-structure with slight modifications and spectrum for 4G networks was licensed to operators at much lower cost in comparison to 3G networks.
After getting details of 4G networks, it is confirmed that 4G offers two technologies, LTE and WiMax, both these technologies offers high internet speed of more than 100 Mbps but LTE is mainly preferred when we require backward compatibility which means that a Smartphone which works on LTE networks can also work on GSM, CDMA and other 3G networks.
The problem is with devices that support LTE TDD in India because it is not available right now but it is expected that it will be available soon. It is Qualcomm which confirmed that LTE devices will be available in bulk in the end of this year. Earlier, Aircel and Huawei conducted a world GSM/UMTS/LTE-TDD trail on Aircel existing GSM/3G network in India using Qualcomm multimode chipset and it works fine with it. Now, it is expected that it will be produced in large scale at end of this year. Moreover, Reliance, Airtel, BSNL/MTNL also puts it efforts to conduct trails on both WiMax and LTE networks.
Most companies are going for LTE networks for its fewer quantity in world market but as far as WiMax is concerned then it is already available in international market as a cheap option. Therefore, companies are trying to exploit LTE network technology which is yet to come. We also know that LTE is expensive in comparison with Wimax network. Apart from this,we are hoping that 4G technology will be launched in India soon so that we can experience high internet speed in less price.
Change your Network Card MAC Address on Ubuntu
There are a lot of reasons you might want to manually set your MAC address for your network card. I won’t ask you what your reason is.
To change this setting, we’ll need to edit the /etc/network/interfaces file. You can choose to use a different editor if you’d like.
sudo gedit /etc/network/interfaces
You should see the line for your network interface, which is usually eth0. If you have dhcp enabled, it will look like this:
auto eth0
iface eth0 inet dhcp
Just add another line below it to make it look something like this:
auto eth0
iface eth0 inet dhcp
hwaddress ether 01:02:03:04:05:06
Obviously you would want to choose something else for the MAC address, but it needs to be in the same format.
sudo /etc/init.d/networking restart
You will need to restart networking or reboot to take effect.
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