Biodiversity – Page 5 – The Green Tau

Counting on … day 162

3rd September 2024

The State of Nature report 2023 states: “The UK, like most other countries worldwide, has seen significant loss of its plants, animals and fungi. The data from State of Nature cover, at most, 50 years but this follows on from centuries of habitat loss, development and persecution. As a result, the UK is now one of the most nature-depleted countries on Earth.”(1) This includes a 54% loss in the distribution of flowering plants, meaning more than half of the land is less rich in biodiversity.

Yet a rich biodiverse environment is better able to cope with and tackle the causes of climate change. (2)

https://stateofnature.org.uk/

(2) https://www.un.org/en/climatechange/science/climate-issues/biodiversity

Counting on … day 161

2nd September 2024

There are 50 days remaining until this year’s biodiversity COP. Biodiversity COP16 will take place between 21st October and 1st November in Cali, Colombia

Biodiversity is a measure of the number of different varieties of life forms found in earth. Some ecosystems are richer in biodiversity than others. The richer an ecosystem is in biodiversity, the more stable is that ecosystem. Globally biodiversity has been shrinking at an alarming rate. The Biodiversity COPs are tasked with finding ways of reducing and turning about this loss of diversity.

Counting on … day 155

23rd August 2024

Ecosystem engineers have an ability to modify resources they have to hand to alter their environment. This alteration maybe to change or to destroy or to maintain (ie prevent change) a habitat. Coral species that form coral reefs, and trees that form forests, both have the impact of radically changing the environment into which they move. Beavers are well known for creating new habitats by felling trees and damming water ways. Prairie dogs by tunnelling and turning over the soil, provide accessible habitats for other burrowing mammals, birds, snakes and toads. They also keep the grass nibbled short, providing a favoured habitat for various birds, as well as enabling the prairie dogs to spot would-be predators – and their whistled alarm alerts other creatures in the vicinity too.

Many living beings, on land and in water, are important because they can engineer environments that support a greater diversity of life forms than might otherwise be the case. Humans fall into this category of ecosystem engineers but the outcome is not always one that promotes greater biodiversity.

Counting on … day 150

16th August 2024

There is a movement called ‘We are Nature’ (1) which aims to redefine the word ‘nature’. Dictionary definitions of nature define nature as being other than what is human. This setting apart appears assumes that that which is human is superior,more important, than nature, and thus to undervalue nature. The definition this group is looking to introduce would be along the lines of “The living world comprised as the total set of organisms and relationships between them. These organisms include bacteria, fungi, plants and animals (including humans). Some definitions may also include non-living entities as part of nature – such as mountains, waterfalls and cloud formations – in recognition of their important role underpinning the web of life.” This one comes from The Conversation – https://theconversation.com/a-new-campaign-wants-to-redefine-the-word-nature-to-include-humans-heres-why-this-linguistic-argument-matters-229338

If we see humans as being integral to, and not separate from, nature then how will that affect our understanding of what is a natural environment? For surely by this new definition a natural,

environment is not necessarily an environment free from a human presence or influence? Might a natural environment be better defined then as an environment in which there is a harmonious – long lived? – numerically rich biodiversity?

(1) https://wearenature.org/our-story/

Counting on … day 146

12th August 2024

The so called ‘Glorious Twelfth’ marks the start of the shooting season for grouse. Over the next few months some 700,000 red grouse will be shot on moors across the UK. These birds, whilst they remain wild, are husbanded by the owners of the grouse moors using methods that involve burning heather and shooting predators and competitors such as foxes, crows and magpies, and birds of prey. The burning of the moorland heather is intended to maximise the new shoots which the grouse feed on, but at the same time it damages the underlying peat and reduces biodiversity, killing insects and small mammals, and by inhibiting the growth of a wider range of native plants.

Grouse-moors are an artificial construct and do not equate with maintaining a ‘natural’ environment.

“Grouse are charming, sensitive birds who can survive as far north as the Arctic circle and are devoted parents to their chicks. They deserve better than being killed in cold blood for someone’s twisted idea of entertainment.” https://www.peta.org.uk/blog/grouse-shooting/

Counting on …day

22nd April 2024

Today is Earth Day. The first Earth Day was celebrated in the USA in 1970. It is now an international day of celebration (always 2nd April) calling on people to protect the planet.

Do we understand and value the importance of the earth to our continued life and wellbeing?

For example do we care about the health of the soil? A healthy soil has:-

1. Good structure: A healthy soil has a crumbly texture with a good balance of air, water, and pore space. This allows water, nutrients, air, plant roots and microorganisms to move through it.

2. Nutrient content: A healthy soil contains the right balance of nutrients essential for plant growth. These can include nitrogen, phosphorus, potassium, calcium, and magnesium.

3. Organic matter: Decaying plant and animal material improves soil structure, water retention and nutrient cycling.

4. Good soil pH: A pH range between 6.0 to 7.5 is ideal for plant growth.

5. Active soil microbiology: A healthy soil contains a diverse range of microorganisms, including bacteria, fungi, protozoa and nematodes. All of which play important roles in nutrient cycling, soil structure and plant health.

6. Low levels of soil compaction: A compacted soil can restrict root growth and reduce water infiltration.

7. Low levels of soil erosion: A healthy soil is not easily eroded by wind or water, which can lead to loss of topsoil and nutrients.

8. Good water-holding capacity: A healthy soil can hold water, preventing it from running off the surface or being lost through deep percolation. (https://insight.study.csu.edu.au/healthy-soil/)

If we use our farm soils in such a way that it diminishes or destroys these attributes, then we will not be able to grow enough food to feed ourselves. Further we will find that we have also diminished or destroyed local ecosystems leading to a reduction in biodiversity – ie of wild plants, birds, animals and insects. And that will have a knock on effect increasing risks of flooding, of accelerating climate change, and – particularly with the loss of pollinators- further risks to food security.

Earth Day reminds us that we must live in harmony with the earth and its natural systems.

Counting on … day 79

4th April 2024

Bioenergy can also be obtained from trees – the timber is burnt to either as direct form of heat from a stove of fire, or in a power station to drive steam turbines that generate electricity. Burning timber is the most common form of bioenergy used in the UK. Whilst it can be claimed that only waste timber is used – cuts and shavings from timber plants – the reality is that power stations such as Drax import timber which already starts to add to its carbon footprint. International rules imported timber is zero carbon as the emissions are counted in the country where the trees are harvested. In fact these emissions are often not recorded at all. And whilst the timber arrives here as preformed pellets, the timber intact comes from whole trees from mono culture plantations or from virgin forests.

In reality burning timber as a bioenergy is not a zero carbon option. The carbon stored in the timber is going to be released at some point in the future but if that tree is left to grow, and in its own good time, die, that carbon is locked in longer. Even better as the tree decays in its natural environment it will take years to decay during which time it will provide a habitat for a great variety of different plants and creatures. Further a large part of the carbon will be absorbed into the soil, again storing it away. If on the other hand the tree, having been felled, is used to make doors, floor boards, paper, furniture etc so the carbon is locked away for many more years to come.

For further reading – https://www.rspb.org.uk/helping-nature/what-we-do/influence-government-and-business/nature-protection-and-restoration/bioenergy

Is burning wood for energy worse for the climate than coal?

Biomass Basics

Carbon capture and storage CCS for the ongoing burning of fossil fuels to generate energy – https://www.theguardian.com/environment/2024/mar/26/tone-deaf-fossil-gas-growth-in-europe-is-speeding-climate-crisis-say-activists?CMP=Share_iOSApp_Other

Counting on … day 77

2nd April 2024

Land management is key in reducing damaging emissions and improving biodiversity. This is acknowledged by the Government but not always pursued.

“Globally, around a quarter of GHGs come from land management activities, including deforestation and agriculture. However, terrestrial and marine ecosystems take up carbon dioxide equivalent to over half of the emissions caused by people. The challenge is to reduce anthropogenic emissions and increase uptake by ecosystems, storing carbon in soils, sediments and vegetation….

“In the UK our land, coast and seas have been managed for millennia to provide food and other resources for people. Some patterns of management were sustainable over the centuries, supporting biodiversity and storing carbon as well as providing for the needs of people. However, there has also been habitat destruction and degradation, leading to declining biodiversity and substantial emissions of carbon to the atmosphere.

“Repairing this damage to stop emissions and capture more carbon is an essential element of achieving net zero, alongside deep cuts in emissions from other sectors such as energy and transport. The Climate Change Committee estimates that 20% of agricultural land will need to be released before 2050 to deliver actions that reduce emissions and sequester carbon. Such a shift in land use change will require us to prioritise opportunities that also deliver wider co-benefits for climate change adaptation, biodiversity, water management, air quality and soil health.”

Natural England publishes major new report on carbon storage and sequestration by habitat

Windows of Opportunity

7th December 2023

30:30 Biodiversity target

“Biodiversity is essential for the processes that support all life on Earth, including humans. Without a wide range of animals, plants and microorganisms, we cannot have the healthy ecosystems that we rely on to provide us with the air we breathe and the food we eat.” (1)

Just as importantly biodiverse rich habitats are more resilient in the face of extreme weather events than less biodiverse habitats, and often incorporate their own protective mechanisms. In other words, biodiverse rich habitats provide us with the safest place to be.

The Convention of Biological Diversity at COP15 agreed that globally we should aim to protect at least 30% of land and sea for nature by 2030. The UK is one of more than 100 nations who signed up to this target.

So far there is considerable scope for improvement. The British Ecological Society’s report, 2020, warned that the UK was on track to miss a pledge to protect 30% of its land and sea by 2030, with some analyses warning just 5% of the nation’s land is effectively protected. The report recommended that protected habitats under the 30×30 pledge need to put biodiversity first and foremost…To achieve this, a wide range of different habitat types need to be protected, with many existing areas requiring stronger protections than they currently have. National parks and areas of outstanding natural beauty could be included in this, if they are reformed to prioritise biodiversity…Connections between sites which allow wildlife to move are important to link up the relatively disparate network of protected areas in the UK. This could consist of physical corridors, stepping stones between them, or by improvements to non-protected land. (2)

(1) https://royalsociety.org/topics-policy/projects/biodiversity/why-is-biodiversity-important/

(2). https://www.nhm.ac.uk/discover/news/2022/april/uk-set-miss-pledge-protect-30-of-territory-2030.html

Counting on …day 1.213

10th November 2023

A Rocha reminds us: ‘Prepare now and give a bird a home in 2024. It might seem to be a strange time to be thinking about bird boxes, but this is the season in which many of our resident birds slowly begin the process of looking for nest sites for next year. Therefore, it is a really good idea to get as many new boxes up as you can, before the end of the autumn season, as it will make it more likely for boxes to be used next spring. See here for more nest box tips.’

Give a bird a home in 2024

Also if you have any bug or bee hotels, move them into a sheltered spot lest exposure to particularly cold temperatures kills the inhabitants.