Biodiversity

Hello,

Today we're talking about biodiversity and why it's so important. As you probably know biodiversity describes the variety of living species, often referring to one specific place or ecosystem. For example, the Amazon rainforest is a very biodiverse ecosystem. The opposite of biodiverse is a monoculture. A monoculture often refers to farmland, where only one crop is produced. Palm oil plantations are normally monocultures, with rows and rows of palm trees and nothing else.

I'm going to start by giving you an idea of the current situation. This year, the State of Nature 2023 report was published. This report looks at recent changes in biodiversity in the UK. To be frank, it's bad news. One in six (17%) of all UK species and almost half (43%) of bird species are at risk of extinction. 31% of amphibians and reptiles and 28% of fungi are also at risk. There has been a 54% decline in flowering plant species and a 34% decline in pest controlling insects (insects that eat/kill "pests"). This is mostly due to us humans. Habitat loss, diseases spread via factory farming (like avian flu), variability in climate due to climate change, intensive farming and unsustainable fishing are all contributing to these shocking numbers. Only 20% of farmland is considered eco-friendly and only 44% of woodland is sustainably managed, not always successfully. Only 7% of woodland, 25% of peatland and none of the seafloor that was assesed is in a good ecological condition. Especially the seafloor has suffered from habitat destruction due to fishing gear. But, there was some good news. The conservation work that is being done is paying off. Lyme Bay marine protected area, in Dorset and Devon, South-West England) has seen a increase in biodiversity since trawling was banned in 2008. The RSPB's (Royal Society for the Protection of Birds) Hope Farm has proven that it is possible to produce food and have a 177% increase in breeding birds over 12 years. The improvement of water quality, has made the recovery of freshwater fish species possible.

So, we've already established that biodiversity is declining. This isn't only happening in the UK. It's happening everywhere across the world. And we've already covered some of the reasons for this decline. But is it actually a problem? What are the consequences of biodiversity loss? Probably the biggest problem is the spread of diseases. In a less biodiverse world, dominant species become more and more abundant, and with them whatever viruses and diseases they happen to carry. This has been seen in mosquitoes. The variety of different mosquito species is declining and those that can survive are reproducing more and more and carrying deadly viruses to more and more areas, where they can transfer to humans. Also, monocultures attract certain species like rats, mice and bats. These species are known to generally carry a lot of diseases. Another problem is something that farmers have none about for thousands of years. Monocultures unbalance the soils nutrients and in the worse case make it infertile. This is because one plant species needs certain nutrients in the soil and doesn't need others. That way, all of the nutrient that it needs is used up and there is too much of other nutrients. This can cause the soil to become infertile, meaning that almost nothing can actually grow there. One technique to avoid this is to rotate the crops every year and also have each field have one year where it isn't used at all and can recover. One more point is that the more biodiverse an area is, the more CO2 is stores. Tropical rainforests with high biodiversity can store more CO2 than a palm oil plantation with just the same plant species for as far the eye can see.

So how do we move forward? What is science doing about this problem? The good news is that this problem is now recieving the attention it deserves. It's even a boundary in the planetary boundary model which we explained a little while ago. One exciting concept is using AI. AI can be an amazing tool for science. Now scientists are using it to measure biodiversity from listening to recordings of animal sounds. Some areas are hard to explore because of thick undergrowth or the animals are very secretive. So simply leaving recording devices in the area and then getting AI to recognise the different sounds is very effective. The sustainabile development goals are very important targets. Unfortunately we are quite far behind on the goals regarding biodiversity and marine life. Another idea that's being considered is calculating biodiversiy loss into prices. The same way that sometimes CO2 emmissions are included in prices, the same could be done in regards to biodiversity. Scientistss from all over the globe are now collaborating and sharing data and technology in global monitoring systems for biodiversity. This also means including other scientists not just biologists and ecologists in the dicussion. Integrating the knowledge from different areas, like biodiversity, climate change, economics, politics, sociology and virology, really accelerates the progress made it each of these areas. All of the topics are different, but they all happen in the same system, our planet.

We hope you enjoyed this post. See you next week!

Your Green World Blog Team💚

Sources
https://www.theguardian.com/environment/2023/sep/27/species-risk-extinction-great-britain-wildlife-state-of-nature-report
https://www.nature.com/articles/d43978-023-00133-5
https://www.sciencedaily.com/releases/2023/09/230918105202.htm
https://www.sciencedaily.com/releases/2023/10/231017123340.htm
https://www.nature.com/articles/d41586-023-03103-5
https://www.sciencedaily.com/releases/2023/09/230915144334.htm
https://www.sciencedaily.com/releases/2023/09/230913122723.htm
https://www.sciencedaily.com/releases/2023/08/230831121715.htm
https://education.nationalgeographic.org/resource/biodiversity/
https://www.sciencedaily.com/releases/2023/11/231117102459.htm


Images:
"Aerial view of oil palm plantation", owned by CIFOR (on flickr.com), is licensed under CC BY-NC-ND 2.0.
"Flower", owned by matthew mclalin (on flickr.com), is licensed under CC BY-2.0.
"monoculture 1", owned by Andy / Andrew Fogg (on flickr.com), is licensed under CC BY 2.0.