Greater Manchester Wildlife

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: *Rules and Map of Tetrads*


Status: Offline
Posts: 83
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Hi Dave
this looks fun
I think I will have a go
K

__________________


Status: Offline
Posts: 2031
Date:
*Rules and Map of Tetrads*
Permalink Closed


Nothings ever simple with you is it wink

I see no reason as to why you could not choose your Tetrad of 2 x 2 1km squares, though in this case you would really need to specific which 1km square they are in (it becomes an issue when using the data for distrubution maps).

As for a home and away tetrad - thats up to each person - you can have as many as you want!

Anyway Brian, are you throwing your hat in ring? I feel a fungi war occuring, Rochdale Cemetery/Golf Course vs Tandle Hill and Royton Cemetery?wink

Dave

-- Edited by David Winnard on Thursday 9th of December 2010 08:47:30 PM

__________________

Discover the Wild




Status: Offline
Posts: 16
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


The more interesting the recording areas are then the greater the chance of more people participating. I am often terrible in raising the enthusiasm to record my sightings onto paper and - I am sad to admit - to even this web site. However, I really want to do better in the future and, perhaps with an increasing group interest in Davids idea, and being given a large and interesting area (covering as much as 4 sq km ) I would finally get more involved? 4 sq km is an excellent size for a recording area or a local patch not too small and not too big. However, to help things gather even more momentum, and perhaps also for other potential participants, I have a suggestion to make. The original meaning of tetrad is a group of four ----- why not go for any group of four km squares (so long as they are truly a group ie each square is touching one of the other squares side to side or corner to corner). More fun and makes for more interesting tetrads to visit?  Also each participant could have two such tetrads Home and Away  --- (the Home tetrad would have to include the participants house and the Away tetrad anywhere further afield ---both of course within the web site recording area). My tetrads could be referred to as BW Home and BW Away. The technical name for a tetrad would simply be the four sq km grid references, xxyy-xxyy-xxyy-xxyy (prefixed by either SD or SJ). Km grid squares are more easily seen on OS maps (can also view sections online) /A to Z plans etc and most participants have copies for the Manchester area.

Brian.

( PS. Although its mainly for fun, on a more serious note each individual record would be defined against its respective OS km square. This would enable any official recording organisations to more easily consume some of the details into their systems).

__________________


Status: Offline
Posts: 369
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Thanks for your explanation Steve - now I understand. I have followed your instructions with no problem and have printed myself another map to add to my collection. I'll have a walk round and identify the extent of my new patch soon. I haven't had a patch before.
I think both Dave and Henry will be in great demand next year for plant and fungi I.D. help - I hope you two are ready for the barage of queries.
Oh and Geoff your inbox might just get full of moth pics too wink.
And I've asked the woodmouse to put in an appearance at exactly 12.01 am 1.1.11. He is getting up quite early for his food as the days are shorter (supper time seems to be 9pm - 10pm at present).

__________________


Status: Offline
Posts: 2031
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Great stuff Steve,

Watergrove has histroically turned up a lot of interesting plants (some planted but no well established) so finding some rare plants would be a real possibility.

No probs with coming helping to I.D fungi, I am sure I will be asking Henry to come and I.D some plants on my patch etc

Cheers

Dave

__________________

Discover the Wild




Status: Offline
Posts: 33
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


David Winnard wrote:

I would agree with you debs the GM map is slightly out  for Chorlton Water Park, OS is what we are going off so if that says its right then its right. An interesting choice Debs, i bet you will be using to bread to make sure you get the ducks at Chorlton into your tetrad wink

Dave



The Tetrad Challenge sounds like a great idea Dave. I produced the GM tetrad map from MapMate and as Debs has realised the hydrological features are not totally in the right locations due to differences of scale between the base map and the hydrology.
However, if any one wants to print off an OS map of a tetrad the best place to do this from is the Bird Atlas section of the BTO website.  http://www.bto.org/birdatlas/taking_part/atlastools.htm The map opens in a new window. Just click on Copy in the top right hand corner of the box and another window opens up with a zoomed in version of the map. Click on Edit / Select All then right-click on the map and choose Copy. If you paste it into a blank Word document you can then save it as a PDF.  The point of doing all this rather than just clicking on print on the original pop-up box is that it gives you a much larger copy almost A4 size. Any problems just drop me a pm with your email address and I'll email it to you.
As you will see Debs there is a tiny part (SW corner with island) of Chorlton WP which just falls within the North East corner of the tetrad.
By the way Dave you can put me down for SD91E Watergrove (as if I'd choose anywhere else!). Although I may need some help identifying some of those fungi biggrin

Steve

 



__________________


Status: Offline
Posts: 1190
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


It would also be great to make as many records as possible collected from this challenge contribute towards official county records and conservation purposes. If we can place as many of our sightings as possible for the tetrads on this forum or the birding forum respectively during the year that will be very useful.
Thanks.
Henry.


__________________

SJ79K 2011 Wildlife Total - 542 (Latest additions - Perennial Coneflower, Red Bartsia, Wild Oat)



Status: Offline
Posts: 2031
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Midnight January 1st Debs until Midnight 31st December 2011. Of course only wild species as per usual, so no to Tortoise but the Wood Mouse is of course wild! biggrinbiggrin

Dave

__________________

Discover the Wild




Status: Offline
Posts: 369
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Thanks for clarifying that Dave.

The choice is based purely on practicality. SJ89A is the tetrad that I live in and since I have very little time to actively go out scouting for wildlife, I will mainly rely on sightings as I am out and about going about my usual business (mainly at break neck speed).
The tetrad does have the wooded bit of Wythenshaw park and I have seen lots of Great Spotted Woodpeckers in there and some nice fungi too (and of course there's always my weird and wonderfull garden fungi collection). In the summer, I often commute back from work along the Mersey and Chorlton Water Park is often part of my route to and from my mother's. I can put the moth trap out in my garden so I think that tetrad should work out ok.
Anyway I like your idea Dave and I would like to join in too even if I can't go out and survey on a very regular basis.

When do we start? Now or 1st January?

__________________


Status: Offline
Posts: 2031
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


I would agree with you debs the GM map is slightly out  for Chorlton Water Park, OS is what we are going off so if that says its right then its right. An interesting choice Debs, i bet you will be using to bread to make sure you get the ducks at Chorlton into your tetrad wink

Dave

__________________

Discover the Wild




Status: Offline
Posts: 369
Date:
*Rules and Map of Tetrads*
Permalink Closed


Thanks Dave and Ian,

Confused?..........................Yes, but not by your instructions.

I can cope with that just fine but what I found out after plotting the tetrad in our Tracklogs software and printing out my own map and then using that, together with an A - Z map to print myself a tetrad map with road names on and then felt quite content with my maps BUT THEN I looked at the colured square tetrad maps on Manchester Birding as per your original suggestion and found that on those tetrad squares Chorlton Water Park is not in the same place as mine.

The SJ82 line is in a different place on the Manchester Birding site map to the OS map software and the A - Z (the OS and A - Z match up with each other).

So according to my maps the square SJ89A has a bit (but not all) of Chorlton Water Park in it but according to the coloured square map it does not.

I am going to try to attach two word files to this post. One with my OS map version and one with the A - Z version. for your words of wisdom.

p.s. Ian - if I could have counted the animals in pets corner at Heaton Park - does that mean I get to count my Guinea Pig, the Terrible Tortoise and the Wood Mouse who lives with uswink

-- Edited by Debs Wallace on Sunday 28th of November 2010 07:26:07 PM

Attachments
__________________


Status: Offline
Posts: 683
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Debs I'm no Christopher Columbus. If you go to street map as Dave suggests the map has 1 km sqares marked on and it and then transposewith 4 of these. You will need to lock on to a point in the landscape from the birding map. Lakes rivers are shown. Get picking. Should be a laugh. If you pick heaton park you could pay a visit to pets corners. Get a few there. 

__________________

  tetrad challenge total 1005 latest mimesa equestris wasp Andricus quercuscalicis Knopper oak gall wasp carrot



Status: Offline
Posts: 2031
Date:
*Rules and Map of Tetrads*
Permalink Closed


It is a case of just cross referencing it with the Ordnance Survey (or even streetmap.co.uk) website.

Ok so lets Say SD80A - the way i would do it is look for the bottom left 1km square in that (which is made of 4 1km sqaures....2 x 2). SD80 as a 4-figure grid ref is SD8000 (you do the bottom figures which if you go from the bottom left corner down to the bottom take you to 80, then the from the same corner of the tetrad go to the left side and its coordinates 00, put them together for SD8000). I put that into Ordnance survey and it takes me to the bottom left corner of SD8000, if you zoom out you see the blue lines which are the 1km square boundaries (go too far out and there 10km). so i know that square, the one to the right, the on above that and the one above the original make up the tetrad.

Take another SJ89G - Bottom left corner of the tetrad....go to the bottom (one the same birding map) to find 82.....then same corner to to left side 92, so its SJ8292. Put that in Ordance survey and it takes you the bottom left corner of your tetrad. Zoom out a little and that square, the one to the right, above and above the original make up the tetrad.

Confused?confuse (I would be) Alternatively just tell me which area you want and ill screen grab the area you want at the OS levelwink

Dave



-- Edited by David Winnard on Saturday 27th of November 2010 10:57:59 PM

__________________

Discover the Wild




Status: Offline
Posts: 369
Date:
RE: *Rules and Map of Tetrads*
Permalink Closed


Ok, I have a question.
I know that my home is in SJ89A and the allotment is in SJ89L and School is SJ89R because that is what I enter roving records under for the Bird Atlas and I have looked at the link to the tertrad map on Manchester Birding as you have suggested. How do I find a more detailed map which shows the detail of the area e.g. on an O.S. or street map or a Google map. You and Ian and Henry seem to know the boundaries of your tetrads and exactly what is in them. I would like to join in too.

Thanks

Debs

__________________


Status: Offline
Posts: 2031
Date:
*Rules and Map of Tetrads*
Permalink Closed


The rules are simple; how many species can you see in on Tetrad in one year? A tetrad is an area made up of 4 1km squares (2kmx2km). A map of all the tetrads in Greater Manchester can be found on the Manchester Birding website http://www.manchesterbirding.com/GM%20BTO%20Region%20Tetrad%20%20Map%20Nov%2008.jpg
You can count anything and everything, from birds to macro and micro moths, bettles, flowers, fungi, mammals, literally anything you find!

Any questions let me know. Its all a bit of fun and most importantly, gaining records which will help with conservation.

Dave

__________________

Discover the Wild


Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard