The Environmental Impact of Bats and Birds in your Garden
Bats and birds in your garden are very common, of any shape and size, preferring to live and nest in established trees. Here are why bats and birds are important residents in your garden:
Firstly, bats play a role in successful pollination of over 500 plant species – including but not limited to mango, banana, guava and other tropical fruit, as well as a variety of flowers. While these plants are not indigenous to the UK, many bats will migrate for the colder winter months, and will play a role pollinating these plants elsewhere across Europe.
Birds also play an important role in doing this – around 5% of the plants that humans use for food or medicine are pollinated by birds. Birds also carry the seeds they have ingested and disperse them through their droppings – this helps our forests and marshes thrive.
All UK based bats are insectivores – they eat only insects. Bats can help keep insects away from crops but also enjoy eating gnats and mosquitos, helping to keep these pests at bay in the summer. Many common garden birds will also eat insects and help keep these pests at bay.
Finally, both bats and birds are indicators of good ecological health. Bats and birds are both sensitive to changes in temperature, weather and other environmental factors – having bats and birds present in your garden shows that your garden is healthy and thriving.
ProHort Ltd, as part of our tree survey service, will identify whether trees or hedgerows on a property have any suitable features for nesting bats and birds. We would recommend completing a tree survey ahead of any building work. It is a criminal offence to intentionally or recklessly disturb roosting bats, destroy a habitat suitable for bat roosting, or obstruct access to a bat roost.
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Soil Contamination – What causes it and how to deal with it.
Soil contamination occurs when the level of pollutants, including chemicals, man-made waste, radioactive materials and salts, is higher than the normally expected level. This then results in the deterioration of the natural properties of the soil, as well as the environment, comfort and health of individuals being adversely affected.
Soil contamination can be caused by a wide range of different factors and events which can all have differing effects on the soil itself. The most common events that result in soil contamination include the introduction of industrial waste into the soil, leaking underground storage tanks or contaminated water seeping into the soil and an excessive use of pesticides or herbicides on the land. Further activities that can contribute to soil contamination include mining, the introduction of asbestos as the result of construction works and the storage of fuel or lead. The presence of Japanese knotweed in an area of soil can also result in that soil being considered as contaminated.
Is Your Soil Contaminated?
If your soil becomes contaminated this can have various residual effects depending upon the environment that the soil is situated in.
In agricultural and rural environments, the fertility of the soil can be reduced resulting in the inability to grow crops and other plants. This reduction in crop yield can then have a further impact on the level of soil erosion and can alter the flora and fauna that can be found in that area. This, ultimately, can result in a change to the entire ecosystem and reduce levels of biodiversity.
Industrial environments will, again, see a decrease in the amount of vegetation found within the area and the release of gases and radioactive rays that could be detrimental to health. Public health may also be at risk in urban areas, as a result of clogged drains, the release of gases and pollution of water sources resulting from soil contamination.
Once soil on your land has been identified as contaminated this can also have detrimental implications for any construction or development plans for that land, as the legal responsibility for that contaminated land lies with the property owner. As a property owner, you will be expected to treat the contamination either before you obtain planning permission for the development, or as part of the development itself. This can result in significant additional costs and delays to development.
If you are planning to develop on your land and suspect that the soils on that land might be contaminated, you should always ensure that the soil is tested and analysed before development begins. This will allow for the correct method of treatment or removal to be actioned and will give you the peace of mind that the costs involved are an absolute necessity to ensure that the development work runs as smoothly as possible.
It is also recommended that a survey for Japanese knotweed is completed by a certified Japanese knotweed surveyor to identify any potential invasive weeds on the site and to ensure an appropriate removal plan is put in to place before development starts.
Contact Us
ProHort can provide you with soil testing and analysis to identify any contaminated soil, whether that be industrial or agricultural. Why not give us a call on 01782 479479 for more information?
Tree selection – why is it so important?
Trees are a natural asset and their benefit to the visual environment can be easily understated. We may think of a typical English countryside view with rolling fields, hedges and specimen Oak trees dotted around. Find out why tree selection is so important below:
But do we ever think of the other benefits trees present to the local fauna and flora?
Trees absorb all sorts of toxins from the air, which is why when you walk around a wood the air always smells and feels that little bit fresher and cleaner. An acre of mature woodland can provide enough oxygen for 18 people and that makes trees pretty important! They also provide significant sources of food and shelter for small woodland animals, birds and insects, all of which are imperative to our ecosystem.
When we pick a tree for a site or our garden, we will want a specimen tree or at least one that will be a real feature as it grows. We should, however, consider a number of things. These include; the size, the spread and height, when and if the tree has visible flowers, the scent, the colour of the leaves in each of the seasons and whether the tree will improve the surrounding environment, perhaps by creating a food source for birds or other small animals.
There are also other types of interest that a tree can bring to its surroundings – bark can be of great interest. Corylus avellana ‘contorta’ has twisted stems and looks great but especially so in the winter when it has no leaves. Whereas, Acer davidii, also known as the “Snake bark Acer”, looks amazing with green and white serpentine stripes on its bark.
Other trees, such as the Tulip tree, Liriodendron tulipifera, is a larger tree which has tulip like flowers when it matures at around the age of 40 years. As can be seen from this tree, sometimes planting a tree is a long-term investment and perhaps even for the benefit of the next generation. This is especially true if you are planting trees that don’t become mature for in excess of 50 years such as the Oak, Beech and Sequoiadendron giganteum that can live for more than 3,000 years!
More commonly found trees suited for planting in a normal sized back garden can include the Amelanchier x grandiflora ‘Ballerina’. This is a pretty specimen tree and well worth the space, with lovely blossom in the spring and bright red foliage as it emerges. It also has small dark purple or black fruits in the autumn, which are edible. Another bonus that this tree brings is the fabulous bright red and yellow colours that the leaves turn in the autumn. A truly great tree for a small garden.
An evergreen tree that is another great choice is the Magnolia grandiflora, a lovely tree which has fabulous white or cream flowers. This tree looks great
and gives additional privacy all year round which is especially important when your garden is overlooked by neighbours!
One final tree we couldn’t not mention is the Davidia involucrata, commonly known as the Handkerchief tree. This is a beautiful tree. Discovered in 1869 and introduced to England in 1904, it has large white bracts that are followed by large oval fruits. If you have the space, a sheltered position and fertile soil this tree will prove to a real spectacle within your garden!
If you need any advice on the choice of trees for your site or garden, and especially so if you want the perfect specimen tree, please do contact us and we will be happy to advise.
ProHort also provide other tree related services, including tree surveys and tree preservation order applications and appeals. Why not get in touch to find out more about how we can help you?
Tree related subsidence – What it is and why it happens
Tree related subsidence is defined as the gradual caving in or sinking of an area of land and can be caused by a range of different factors. These can include:
Poor ground quality or an inadequate building foundation,
Historical mining,
The erosion of soil which results in an underground opening,
Excessive levels of water washing soil away from the surrounding area,
Clay soil shrinkage and heave due to the changing weather in summer and winter,
Trees being located within the close proximity of the building.
Have You Got Issues With Tree Related Subsidence?
Trees roots can spread by up to three times the height of the tree which means that, whilst a lot of buildings are not affected by the growth of these roots, those built on shrinkable clay soils and located near to a tree are at significant risk of experiencing subsidence.
Clay soil is highly absorbent, allowing it to take in water and expand during wet weather. The soil then dries out in the warmer weather and shrinks, meaning that there is a constant heave and shrink cycle within areas consisting predominantly of a clay soil type. Trees can then exacerbate the shrinkage of clay soil by drawing the water out of the soil, causing the ground underneath buildings to shrink significantly and resulting in movement within the property foundations. This movement then goes on to cause cracks in both external and internal property walls.
When dealing with a tree that is causing subsidence, it is always necessary to consider the risk of soil heave. This can occur as a result of the clay soil returning to its former moisture level and expanding once the tree has been removed, causing any foundations laid over the soil to lift and potentially cause further damage.
In order to cater for this, each individual occurrence of tree subsidence should be considered based upon a variety of factors including the nature of the surrounding ground, the quality of the buildings foundations, the span and depth of the trees roots in comparison to the building and the typical variations in conditions throughout summer and winter. The potential removal of a tree that is causing subsidence should always be considered on a case by case basis and is highly recommended to be carried out by a professional arboriculturist.
Contact Us
At ProHort, our team have over 20 years of arboricultural experience and are experienced in identifying subsidence resulting from the presence of trees. Find out more about our Tree Subsidence Reports service, or why not get in touch for more information?
Bats and birds in your garden are very common, of any shape and size, preferring to live and nest in established trees. Here are why bats and birds are important residents in your garden:
Soil contamination occurs when the level of pollutants, including chemicals, man-made waste, radioactive materials and salts, is higher than the normally expected level. This then results in the deterioration of the natural properties of the soil, as well as the environment, comfort and health of individuals being adversely affected.
