Showing posts with label Pond aeration. Show all posts
Showing posts with label Pond aeration. Show all posts

Monday, January 18, 2016

Midway Through the Heating Season

It takes weeks for outdoor temperatures to catch the earth's dance around the sun. The hottest time of year is usually not the longest day, first day of summer, and the coldest rarely occurs around December 21, the shortest day. Seasons reflect this phenomenon by getting colder as winter progresses and the sun shines longer every day. Today in mid January we're halfway through a typical heating season - having burned half the wood we'll need to keep warm. It's been an extremely mild winter, so far. This month we even had a thunderstorm with a rainbow and haven't had to shovel the driveway yet, though we did have to sweep a few inches of snow off the deck.
So Far We've Burned Less Than a Quarter of Our Two Year Wood Supply
Rare January Rainbow
Tracks Plastered to Deck Boards Resist Sweeping
The pond finally froze over earlier this month and we had to install the bubbler to aerate the water. This also melts a large hole in the ice. Colder days shrink the size of the hole, warmer days expand it. Our neighbors' fish died last winter from lack of oxygen because heavy snow blocked sunlight from reaching underwater plants. Last week I installed a bubbler in their pond and they are enjoying an otter frolicking around the resulting hole and scooting up on the surrounding ice. 
Our Almost Frozen Pond
Pond Frozen All Across
Hole in Pond Ice by a Bubbler
Recently, a few nights went near zero so we had to bring the carboys of fermenting cider indoors. We also had to move the Granny Smith apples into the greenhouse where we crushed and squeezed most of them into 17 gallons of cider. We still have half a bushel for eating fresh and pies. When it is windy and well below freezing outdoors, sun warms the greenhouse to 50-60 degrees making it pleasant to work in shirtsleeves. Night time temperatures there drop to the low 30's. 
Row of 11 Buckets/Carboys of Fermenting Apple Cider, Pear, Grape and Berry Juices
Our Local Male Pheasant Out for a Stroll










Monday, March 16, 2015

Tapping Sugar Maples, Attracting Deer, and Bubbling Fish

Gathering Maple Sap Exercise Program

This week warmed up enough for maple tree roots to pump sugary sap into trunks. It took quite a few days of above freezing weather to start the sap flowing because the ground has been covered by a few feet of snow and nighttime temperatures were, until recently, often in single digits. It takes less than five minutes to drill a hole, tap in a six-inch tube, slide on a gallon plastic jug and fasten it to the tube. We’ve found vinegar jugs the best but milk vessels also work. I drill an undersize hole into the upper hollow finger loop that each vessel has so the tube fits very snugly to prevent midges and mosquitoes from getting into the jug. We rarely have to screen the sap.
Gallon Milk Jugs as Maple Sap Collection Vessels
The sap level in the translucent jugs is readily visible from far away and when days don’t go much above freezing or stay there very long, it takes awhile for the tree to fill a jug. We have 14 taps going and, so far, only one tree fills its jug in 24 hours. The others barely produce a quart. To prevent losing any sap from the productive tree, I slipped a connector on the tube and ran a longer plastic tube into a five gallon covered pail. This morning I checked the line of trees and none dripped more than a pint of sap since last evening. So I went the quarter mile home without having to carry extra weight.
Gallon Vinegar Jug Collecting Maple Sap
It won’t be long when I’ll have to carry two full five-gallon pails (80 pounds) and sometimes even twice a day when the exercise program really kicks in. It’s all for a good cause: it takes 40 gallons of sap to make a gallon of maple syrup and our friends and family can readily consume four or five gallons over a year.

Recycling Nutrients

A long time ago we lived on a stream that salmon used for spawning. Many thousands swam upstream in late summer to mate, lay eggs and die. Our dog thought it a terrible waste to see thousands of fish rot along the edges of the stream so she rolled on them and ate as many as she could. She couldn’t digest them so had to throw them up, only to try again a bit later, or the next day. I’ve since read articles on how salmon benefit valleys where they spawn. The nutrients they carry from the deep ocean end up well distributed around the valley courtesy of the birds and mammals that eat live and dead salmon.

One afternoon we counted more than 40 eagles waiting to digest their last meal so they could eat again. None of the salmon lying along the stream had eyes because seagulls fought among each other to pick them out these delicacies: breaking through salmon skin was too much work! ….but not for eagles.
Deer Dropping Fertilizer
I think of them when I see deer and rabbit droppings all over the snow covering our fields. These herbivores cover wide ranges and deposit many droppings where they rest. It’s great to see a herd of deer spend hours in our grove of Douglas Fir and then later see pounds of droppings everywhere. Each year we use the top of one of these trees to celebrate winter holidays and the trunks and large branches for firewood. It’s great that the deer gather nutrients from miles around and the fertilize our fields and fir trees without me having to lift a finger!
Deer Droppings with Tracks Under Fir Trees

Thousands of Fish Die from Lack of Oxygen

Our neighbor has a 10+ acre pond that is very long. Every year we discuss placing a bubbling system in the deep end that would allow fish to survive the winter. Last winter fish older than two years died under the ice from lack of oxygen. We had a thaw in January, 2014, that opened up much of the ice and thoroughly oxygenated the pond that lasted long enough for the smaller fish to survive. The odor was pretty heavy for a few days in the spring but it didn’t take long for mammals and birds to gobble up the few hundred large bass and sunfish.

Large Pond Where Fish Died From Lack of Oxygen

This year the very deep snow on ice that formed in December and hasn’t yet melted. No January thaw.
Two+ Year-old Sunfish Died from Lack of Oxygen
The edges are melting in some places and reveal thousands of dead fish, including even last summer’ fry, see photos below. We’ll catch stock from our pond with enough pairs for them to repopulate this much larger pond. I hope this fall they invest in a bubbling system large enough to enable their whole pond of fish to thrive. Insects, mollusks, salamanders, frogs and turtles that also overwinter underwater should also benefit from well-oxygenated water. Some of them may die but won't be noticed since they bury themselves in the mud.
Summer's Young Fish Didn't Make it Through the Winter


Sunday, March 8, 2015

Less than a Quarter of the Heating Season Left!

March 2 is typically the day when three quarters of the annual heating degree-days are behind us. They measure how many degrees “colder than 65F” over a 24 hour period there are. Fuel delivery folk use this values to estimate when it’s appropriate to automatically refill oil or propane fuel tanks without bothering homeowners. It’s been going below zero many nights here for quite a long time so we’ve been burning more wood than usual but we still have a ways to go before we’re halfway through our supply, see photos below. The wood stacked on the left we will burn next year but hope to begin harvesting solar energy to diminish what wood we need. I’ll try and fill up the empty portion on the right that we burned this season as soon as the weather improves so we’ll have enough fuel for the 2016- 2017 season even if the solar project doesn’t get finished or has issues.

Right Side of Wood Crib Empty: March 8, 2015
Lots of Wood Left for Last Quarter of This Heating Season and For 2015-16
It’s still not warm enough for maple sap to start running. I tapped one tree yesterday and the jug below the tap is still empty. Air temperatures warmed up to a few degrees above freezing for a few hours each of the past two days but more than two feet of snow cover will probably delay tree roots from pumping sap up trunks for a few more days. The weather forecast for later in the week, though, looks good. It’s important to capture early sap runs because some years the season is very short. Trees need warm days and freezing nights to pump sap and once temperatures stay above freezing, the season is over. We’ll have very unhappy daughters if they run out of syrup before the following season flow.
Heavy Snow Has Covered Everything for More Than Two Months

The size of the hole in the ice on our pond varies with temperature. The small compressor pumps the same amount of air into the air-stones at bottom that makes thousands of bubbles to buoy up warmer water from the bottom. Really cold weather where it doesn’t get much above zero shrinks the size of the hole to half the diameter than when temperatures go above 20. Ice rings that freeze around the edge record this activity until new snow covers them, see photo below.
Diminished Aeration Hole in Pond Ice with Four Foot Drifts in Foreground