Showing posts with label sxbrc. Show all posts
Showing posts with label sxbrc. Show all posts

Thursday, 23 August 2018

Gatwick Wildlife Day 2018

The Gatwick Aviation Museum is a hidden gem of a place, containing an impressive collection of well-kept British aircraft manufactured between the 1940s and the 1970s. The main building is a large aircraft hangar located in a large field, north-west of Gatwick's runway.


The landscape here is made up of wetlands, hedgerows, mature English Oak trees and margins of long grass, which combined with a lack of human disturbance results in some excellent areas for wildlife. The site also has very few biological records, and as species listing helps us to build up a picture of the ecosystem health, this is an ideal location for our 5th annual wildlife recording event!

North West of the runway


The bioblitz area

Event kick-off: Friday 22nd June, 7pm

(One day after the summer solstice.)




On the second longest day of the year, there was plenty of time before sundown for the Gatwick Greenspace Partnership team to set up the recording base camp. We readied ourselves for a long evening of wildlife discovery, which involved brewing plenty of coffee and a bit of impromptu kazoo playing.

Aviation Museum pond

It was an incredibly warm summer evening with hardly a breeze. As the first guests arrived, our task was to put the overnight moth-trapping equipment out into the heart of the site. 


Next up was the setting of longworth traps (used for live capture of small mammals) which were placed out around the perimeter of the site. As the sun finally began to set at around 9.20pm, Martyn Cooke and Kevin Lerwill began the bat activity survey. 

Static bat recorder

Martyn's specialist bat recording software produced over 3000 sequences, and approximately 25,000 individual bat calls. Three species were positively identified; Common Pipistrelle, Soprano Pipistrelle and Noctule. Two species of Myotis bats were recorded, and noted as probable Bechstein's and Whiskered. A possible Leisler's bat flagged up, but was unfortunately the recording was quite poor.

Total bat species: 5

By the evening's end we had gathered many wildlife records of the nocturnal kind, including several species of amphibian, bats, spiders, and a very vocal Tawny Owl

Common Toad Bufo bufo

Common Frog Rana temporaria 
(Photo by Helen Cradduck)

Total amphibian species: 3

A beautifully polished Walnut Orb-weaver Nuctenea umbratica


Around midnight it was time to put the kazoos away and turn in for an ambitious attempt at getting some shut-eye next to an airfield. 



Saturday June 23rd: 6am


(Photo by Lucy Groves)

The sun popped up again much sooner than we would have liked, and the team was mobilized at 6am. The first task of the day was a bird survey, which involved walking the entire perimeter of the site, keeping a sharp eye out and listening for calls.



The areas of wet scrub proved very productive, and we were greeted by the sounds of Reed BuntingGoldfinch and Common Whitethroat. Along the mature hedgerows and Oak trees, the most vocal birds were Nuthatch and Song Thrush.

Common Buzzard Buteo buteo
(Photo by Helen Cradduck)

Total bird species (seen and heard): 32

After the birds, it was straight on to checking the small mammal traps, with local mammal expert Lucy Groves leading the group. We found 5 species of small mammal which we considered good going for a short survey; Wood Mouse, Yellow-necked Mouse, Bank Vole, Common Shrew and Pygmy Shrew.



Wood Mouse Apodemus sylvaticus 
(Photo by Lucy Groves)

Larger mammals which were also seen on site included Rabbit, Red Fox, Roe Deer, Grey Squirrel and Brown Rat.

Red Fox Vulpes vulpes 
(Photo by Helen Cradduck)

Total mammal species (not including bats): 12



After a quick breakfast and some fresh pots of coffee, next up was the moth trap reveal with Laurie Jackson and Bob Foreman leading the show. The overnight traps were emptied with every moth, large and small, closely examined for identification and then counted.

Elephant Hawk-moth Deilephila elpenor 
(Photo by Helen Cradduck)


We were looked on by the yellow-and-black caterpillars of the Cinnabar moth, making short work of the Common Ragwort growing nearby.

But the rarity of the day (which caused the most excitement in the mothers' world) was the Dotted Fan-foot Moth, a nationally scarce species...




Total moth species: 68

Late morning rolled in (along with a fresh lot of guests!) and we sent out the troops out with their sweep nets, chasing down the numerous invertebrates out on the wing and hiding up in tall vegetation.

Banded Demoiselle Calopteryx splendens
(Photo by Helen Cradduck)


Total dragonfly & damselfly species: 7

Vince Massimo carried out a survey around the perimeter of the site, giving our butterfly species list a boost. The most rewarding find for him was a Purple Hairstreak high up in the canopy of the oldest Oak Trees.


Large Skipper Ochlodes sylvanus 
(Photo by Vince Massimo)

Small Tortoiseshell Aglais urticae 
(Photo by Vince Massimo)

Total butterfly species: 17

Other invertebrate groups can be a great challenge to identify to species level, so we were lucky to have experts on site such as Peter Hodge who did a brilliant job of sorting out the beetles for us...

A species of Soldier Beetle - Cantharis rufa

Cantharis nigra

A tiny lacewing larvae



Labyrinth Spider Agelena labyrinthica


Total beetle species: 42
Total spider species: 7
Total fly species: 16

And not forgetting the plants and fungi, with specialists Nick Aplin, Clare Blencowe, Brad Scott and Arthur Hoare helping to cover these challenging groups...

Arthur Hoare in action




Marsh Thistle (Cirsium palustre)

Total vascular plant species: 59
Total lower plant species: 6
Total fungi species: 14


The final part of the day involved pond dipping for aquatic invertebrates. We are able to identify a few of the dragonfly nymphs and water bugs, as well as getting up close to the young frogs and newts.



Dragonfly nymph 
(Photo by Lucy Groves)

Newt larva
(Photo by Lucy Groves)

By the end of the day, at about 2pm we had our running total, but it didn't stop there with experts taking away notebooks and specimens for closer examination.

This was the total count at around 2pm

As of now, the grand total for the day stands at 323 species!

A huge thank you to Tom Simpson, Kevin Lerwill, Tamara Jewell, and to all of the volunteers and guests who attended on the day. A special thank you also to Ashley and Jon of the Gatwick Aviation Museum for allowing use of their excellent site and facilities.

The latest breakdown of group totals from Lois Mayhew at the Sussex Biodiversity Record Centre:
amphibian3
bird32
beetles42
flies16
moss and lichen6
plants59
moth68
butterfly17
earwig1
true bugs27
dragonfly7
hymenoptera6 (includes 1 gall)
isopod1
mollusc2
Grasshoppers and crickets3
mammals12
spider7
fungi/rust14
Total Species323
Total Records423

Monday, 8 February 2016

Adastra - 2016

My top-tips for making it through an all-day seminar:

1. Curb alcohol intake the night before
2. Sip water constantly; keeps brain alert and banishes drowsiness (particularly if you disregarded point 1)
3. Ignore all the above if you're going to a Biological Recorders meeting; the talks will be riveting anyway and your day will fly-by!


The 27th Sussex Biological Recorders seminar took place on Saturday at Adastra Hall in Hassocks. This is a meeting of like-minded nature-explorers, open to people of all ages, abilities and interests in wildlife watching and recording.

The Royal Air Force motto - Per ardua ad astra

Adastra Park and Hall were named for members of the Royal Flying Corps who lost their lives in World War I. The motto roughly translates as 'to the stars through hardship'; rather fitting for present day biological recording with continual habitat loss, the decline of most species and funding cuts to wildlife organisations. Fortunately, events like the Sussex Biological Recorders Seminar light the way forward, inspiring conservationists to fight on.

A rabble of around 190 biological recorders arrives - this event books out every year

The day consisted of talks by different wildlife conservationists from around the county (plus a few from further afield), beginning with an update from the Sussex Biodiversity Record Centre (SxBRC), summarising the victories and challenges of the year just gone. The main talks commenced with a presentation by Dr Nikki Gammans on 'The Plight of the Bumblebee'...


Next up was a talk on the variable state of our Local Wildlife Sites, formerly known as Sites of Nature Conservation Interest (we have one here at Gatwick: Horleyland Wood). We then delved into the hidden world of Ashdown Forest's rarest plants, followed by an exploration into the stunning variety of shield bugs to be seen around Sussex.


A particularly shocking message was that of the RSPB about Turtle Doves in the UK; only a handful now breed in Sussex and the south-east, with fewer returning each year. I'd no idea that in my lifetime this gorgeous bird could go extinct.


However, the message wasn't all doom and gloom. With the help of farmers and continued support of nature organisations in the years to come, Operation Turtle Dove hopes to reverse the decline of this beautiful, charismatic bird.


Coffee breaks between the talks gave people the chance for yearly catch-ups, exchanging ideas, endless questions, plus checking out some of the excellent display boards around the edges of the room...


Towards the end of the day, there was even a surprise guest appearance by one of our most famous Sussex naturalists... TinyBirder himself!


The overall message from this day is very clear - the hard work being put in by passionate wildlife observers provides evidence of a very clear trend of declining species, all easily observable in my lifetime (only just 3 decades).
 

Along with all county record centres across the UK, the SxBRC is the go-to place for local wildlife information, collecting historical and current distributions for hundreds of different species. This hot-pot of clever, kind, and welcoming staff act as a central point for other wildlife organisations and nature-novices to look to, for help and guidance with all our records and never-ending questions.

More pictures from the day on Twitter: #2016Adastra
A link to the full 2015 Adastra publication (you can read my piece on recording wildlife at Gatwick on page 44): http://sxbrc.org.uk/biodiversity/publications/Adastra2015/