Showing posts with label stag beetles. Show all posts
Showing posts with label stag beetles. Show all posts

Thursday, 31 October 2024

Creating new wildlife habitats

 16th October 2024: Lizzy from The Orchard Project led our team of volunteers on a habitat creation journey in and around Mayow Park orchard on a fine, warm October day.

Tools at the ready in wheelbarrows

Photo AS

We were joined by young people from Free We Grow, who came ready to work. Under Lizzy's guidance the young people planted bulbs in the soil around the trees so that, come spring, we will have a lovely floral show.

Photo Mariana FWG

The children worked well as a team and some good conversations were had about what they were doing.

photo Mariana FGW

photo Mariana FWG

photo Mariana FWG

Meanwhile Friends of Mayow volunteers searched for wooden logs the thickness of an arm or slightly thicker. These logs were sawn to manageable lengths ready to create our stag beetle loggery.

Photo AS

Lizzy found the perfect location:  

Photo AS

Stag beetles are among a number of UK endangered invertebrates. Even though there are not huge numbers,  they seem to have settled in South East London where there find old, rotting logs to lay their eggs. Stag beetle larvae can spend up to seven years munching through logs half-buried in the ground. Then they pupate and emerge from their cosy woody homes into daylight.  And we find these royal insects flying around on warm evenings from late May into July as they search for mates, lay eggs and the cycle starts again.

With the logs ready, the two Mikes prepared the ground:

Photo AS
Their artistic creation:   
Photo AS
All finished: 
Photo AS

Sunday, 27 March 2016

Look out for stag beetles in Mayow Park from May to July

With summer approaching, I am keeping an eye out to protect stag beetles and their larvae in Mayow Park. In May, June and July stag beetles will start to emerge from decaying wood under the ground where they have been tunnelling through as larvae.

Mayow Park has been a hotspot for these magnificent creatures but numbers have declined in recent years through a number of factors including damage to their habitat, being dug up by predators, caught by cats and crushed by cars on our roads. They are clumsy flyers and end up falling to the ground. 
Male stag beetle (lucanus cervus) from London Wildlife Trust
London wildlife Trust has an advice note about stag beetles (lucanus cervus)

These creatures are detrivores, eating their way through decaying wood and helping to create new soil. The larvae bore through decaying wood  underground for up to seven years before changing into the stag beetles that we all recognise. You can tell them from similar looking larvae: lesser stag beetle larvae feed on decaying wood above ground and cockchafer larvae live on living roots.

The PTES charity has produced an ID guide to different, but similar-looking larvae http://ptes.org/wp-content/uploads/2014/06/Larvae-ID.pdf


stag beetle larvae in their characteristic curled pose https://ptes.org/campaigns/stag-beetles/
The female stag beetle looks similar to the lesser stag beetle (dorcus  parallelipipedus)   http://www.wildlifetrusts.org/species/lesser-stag-beetle as they both have pincer-like jaws that can nip your finger. Significantly it is all black where lucanus cervas is a dark-brown/ black.  Dorcus is far more widespread and can be found across England and Wales.
Stag beetles  are protected in the UK under the Wildlife and Countryside Act 1981. They are classified as a priority species in the UK Biodiversity Action Plan.

Here a summary of  information from London Wildlife Trust

 How to spot a stag beetle 
·         You are most likely to find a stag beetle near or on dead wood
·         It's between 5cm and 8cm long
·         It's got large antler shaped jaws
a)     The male's jaws are very large
b)    The female's jaws are smaller but more powerful
·         Adults emerge from the soil beneath logs or tree stumps from mid-May til late July
·         Males are often seen flying on sultry summer evenings an hour or two before dusk

So let's all be aware of these special invertebrates and help them to thrive once more in Mayow Park.

Sunday, 7 June 2015

Path edge logs and stepping logs

I generally like to post positive comments on this blog but one thing regularly bothers me. Our volunteers give their time willingly and we would like to feel we have support from other park users.  Yet our volunteers  have to keep replacing the path edging logs in the Triangle.
Over the past few years Nature's Gym volunteers have helped the Friends of Mayow Park  to maintain the Triangle beds.  These are the fruit bed near the dawn redwood tree and the herb bed nearer to the cafe. We are always pleased to have help from Nature's Gym and their efforts make a lot of difference.

One task they do  each time is to bed the wood chip path edge logs between the dawn redwood and the fruit bed. As one person recently said, "It stops the path looking frayed."  They do this because the logs are pulled up by others and not re-bedded.

As well as the path edging logs,  the stepping logs in the fruit bed were originally placed so  people could step through the fruit bed without trampling on  plants and I have watched children having great fun jumping from one log to another. But some of these stepping logs have frequently been turned over to hunt for little creatures and have now deteriorated.  If you look carefully, you will see some of these log remains.

The sitting logs by the mini meadow also deteriorated and crumbled over time made worse by efforts to lift them out of their posts.

So, path edge logs, stepping logs and sitting logs, three sets of logs within the Triangle, were placed for different purposes and all suffered.  While I am sure people mean no harm, they clearly do not think that they are undoing work that volunteers have done. We have had to bed in logs ever more frequently, which is very disappointing for the volunteers who worked so hard. I think the time has come to raise awareness among park users and to ask them to leave these logs, not to move them.
edging log moved out of dug channel
Another rather unfortunate consequence of the log-lifting is damage to the habitat of invertebrates such as stag beetles. I will explain:
At the end of April, Glendale staff helped the Friends by bringing  more  path edging logs and sitting logs. They worked hard to bed in the path edge logs. It really did look good! While digging, they found two older, rotting logs. One had  at least a dozen stag beetle larvae. So these logs were carefully replaced and extra earth placed over them to make them less conspicuous.

Glendale also replaced the sitting logs by the mini meadow. Some of the old logs had rotted so were useless for sitting on. Their hard work was very much valued by us.

During the half term break, some people lifted and turned many of the new path edge logs, as well as the two rotting logs with the larvae. I found the two logs turned upwards, with only a slug and a woodlouse in one of them (see photo) where a few weeks earlier they had been occupied by the beetle larvae.
path edge log upturned
These larvae were not ready to pupate when we discovered them at the end of April. I wonder whether eager young scientists discovered the creatures, did not know what they were and took them away.
It is now June, a time when the larvae pupate and turn into full-sized stag beetles, so I am disappointed at their disappearance.
one of the path edge logs lifted and habitat destroyed
I would ask all park users and in particular the parents, children and teachers who use the park to consider that the logs have been put there by volunteer labour and that they serve as habitats that we should not disturb. There are other logs near the drinking fountain on the grass area of the Triangle which are not bedded in and can be moved at any time.