How does climate change affect biodiversity?

What are some of the global threats to biodiversity? Everything that we do locally has global consequences. When we talk about something like greenhouse gases or other pollutants, something we produce locally from our cars and other things that make up so many of our  human activities. But on the grand scale of things, even these local activities and impacts can have global effects. If greenhouse gas emissions continue to rise, many animals and plants unique to the world's most scenic natural places face extinction.

Increases in the amount of carbon dioxide mostly come through burning of fossil fuels. Fossil fuels contain a huge amount of carbon dioxide. And when they burn, they not only release heat energy but they also release carbon dioxide. That's why the atmospheric CO2 is increasing. Why are so many people concerned about that in terms of global change?

There are agencies out there that are very concerned about this problem. One of them is the intergovernmental panel on climate change(IPCC). According to the most conservative IPCC estimates, the global temperature on earth is going to rise 1.1 to 2.9 degrees Celsius during this century. That's two to 5.2 degrees Fahrenheit. Modeling or estimating what will happen is tricky, which is why we have these suggestive ranges instead of precise single figures.

What does this mean for biodiversity though? Well, in the first place, you are gonna lose these lying places and, therefore, their habitats and the species living in them. Climate change will negatively affect most native and endemic species, those that are found in very specific places. Some of these habitats are home to rare and endangered species. A part of the current change in sea level, what really is a major, for biodiversity is warming itself. Again, remember that every species has its own optimal habitat and tolerance range and that includes all the things that go along with living in the right temperature regime. The IPCC estimates that a four degree celsius increase over  Seven degrees Fahrenheit is going to result in major extinction due to the inability of organisms to adapt to the changes. Organisms can't move to cooler areas fast enough or adapt fast enough.

Sure, some migratory animals can change their pattern of migration a bit, but what about the organisms that can't change? What about the one that can't move? Entire forests come to mind. I think of mountain ranges. Forests will move further up to mountainsides, completely altering or displacing the entire ecosystem as they go and we have got really interesting examples. Dave Kavanaugh, who studies economic beetles, specialized in living in the icy areas high in the mountains. These colder areas are disappearing. The beetles are moving to higher and higher elevations but pretty soon they are going to run out of mountains.

Reefs just can't respond to these rapid temperature changes fast enough nor move to other places. Even assuming that other suitable habitat was available. Those are some of the effects of global warming but we also need to talk about the chemistry of adding CO2 to the world ecosystem. There is some early evidence that shows all the regions of the world will be affected one way or another.

Have you at any point stalled out and about because of brown haze in winter? Have you ever considered why we encounter this issue in the winter but not in the summer? In the winter, when smog covers the entire atmosphere, life becomes miserable. But why does this occur? Is it because of the holiday season, burning stubble, or something else? Regardless of the reason, the fact remains that this occurs as a result of air pollution, and regardless of whether it is summer or winter, we are the primary contributors to air pollution.

According to reports, air pollution is the cause of approximately 10% of deaths annually. Bangladesh is the nation with the world's highest pollution level. India is in third place, followed by Pakistan in second place. However, how is air pollution measured? In most cases, the "Air Quality Index" (AQI) is used to measure air pollution. Eight different pollutants are used to calculate the AQI; PM 10 and PM 2.5 stand out as the most significant of these. PM 10 refers to particles smaller than 10 micrometers, while PM 2.5 refers to particles smaller than 2.5 micrometers.

These tiny particles enter our breathing canal and affect our lungs when we breathe, causing a number of respiratory and heart conditions. These particles are as harmful as smoking forty cigarettes per day when inhaled. As a result, this is a serious issue that needs to be addressed.

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MPhil/zoology | Freelance writer