alchimie: (Default)
I lost the impetus to write here a bit during another round of mildly ill children -- nothing worrisome, but enough that they were home from school -- and then the details around spouse's upcoming surgery, the exact timing of which is still shrouded in mystery so I do not know if I need to arrange childcare etc. We should know for certain Wednesday, I hope. I dislike the constant wear of it all, and my own up-and-down sleep, but eventually it will be done, and for just now I have found some urge to write here again, so that is something.

I have been enjoying the ToB very much, commenting enthusiastically on most days even though I have not read all the books, and I have been working in fits and starts upon my fiction project, which right now I believe will someday be something other people can read, although that belief is very ephemereal. Elderly catten has still not made it to the vet (I had to reschedule, and then to cancel, due to smol son being ill, and I have not yet rescheduled again because of all the other things) and there are a lot of emails I need to be sending that I am ignoring, but ah well, all the work will still be here in the days to come, I have faith.

The weather here is briefly beautiful; sunshine and a little breeze and warm tending almost to hot. On Saturday spouse and I took the children to the nearby 'lake' which is really just a large pond, but large enough that for them to ride their scooters halfway around and back again was an adventure for my smol son, and before the riding they played extensively on the playground and spouse and I sat in the sun and looked at the ducks and Canada geese and other water birds and listened to their discussions -- so much quacking and honking and splashing, to what end I do not know. It was lovely and I am glad to have had it. Yesterday was harder; spouse was exhausted and depressed and there were chores to be done, but we made it through and everyone has clean laundry in their drawers, and now it is Monday noon and I am sitting in the sun that comes through my bedroom window drinking decaf coffee and contemplating what task to attack next.

Next up: Monday reading, because to wait for Wednesday is sheer folly.

Date: 2019-03-18 07:58 pm (UTC)From: [personal profile] cmcmck
cmcmck: (Default)
Everything from a puddle to a lake is known as a 'pool' here! :o)

Date: 2019-03-19 01:15 am (UTC)From: [personal profile] graydon
graydon: (Default)
Smallest definition of "lake" by area seems to be around 2 hectares. (Beaver ponds certainly come larger than that!)

The more generally useful definition may be the depth one; is it deep enough to have an aphotic (lightless) zone?

Date: 2019-03-19 12:35 pm (UTC)From: [personal profile] cmcmck
cmcmck: (Default)
Clearly whoever produced that definition does not live in the UK county of Shropshire! :o)

Date: 2019-03-19 12:48 pm (UTC)From: [personal profile] graydon
graydon: (Default)
I think it's nigh-purely a "trying to do ecology in NorAm" definition, in which context the area lake definition tends to use a forty hectare minimum.

The whole aphotic thing matters a lot; when zebra mussels got into the Great Lakes, having a wildly proliferating filter-feeder pulled a lot of gunk out of the water and lowered the boundary for the aphotic zone several metres, at which point a lot of water intakes which had hitherto been trouble free started getting biological contamination problems. Much extension of pipes followed.

Date: 2019-03-25 09:33 pm (UTC)From: [personal profile] graydon
graydon: (Default)
If it's not officially a reservoir, it might not have an listed depth. Surveyors don't usually get paid to bring a boat and do a depth survey for any water that isn't a reservoir or navigable. (This has lead to some quite startled cottagers in parts of eastern Canada; why, yes, that lake is quite small in area terms, but it formed in an old, old volcano remnant and does indeed go down further than it's wide.)

There are all sorts of things about the light supply; you can apparently get completely different ecologies depending on what fraction of the surface area has floating or emergent vegetation.

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