Friday, November 8, 2013

Color and Rain






Color and Rain
November 6, 2013

Things have changed so much.  Our woods became a blaze of color:  dandelion yellow, crimson, deep orange, hot red, bronze, russet, rust.  There was still some green.  We had some “Indian summer” weather for awhile, but lately it had been getting colder. 

 We had also been having rain.  Before this day, it rained steadily during the night and all morning, and promised to rain all afternoon and evening.  This was a classic November day in Indiana – blustery, nippy, wet, colorful, with steely, overcast skies.  Wet tree trunks and limbs looked like dark streaks against the vivid fall colors.

I love these November days, and I needed to get outside, in the rain.  It was a good time to check out Cottonwood Pond.


I slipped into the edge of the woods and worked my way down the slope toward the creek and Cottonwood Pond.  Beneath my feet I heard the slip and crunch of wet leaf layers, and the snap of twigs fallen during the morning's wind.  The wetness of long rain dampened the scent of decaying leaves.


 Leaves collected on the woods floor:  Sugar Maple, Black Maple, Sycamore, Tulip Poplar, Wild Black Cherry

On top of the old, brown, rotting layer of last year's leaves lay the layer of vivid, newly fallen leaves, their shapes, designs and identities still discernible.



A yellow Tulip Poplar leaf bore marks of age and experience from the past spring and summer.



The golden leaves of a Sassafras sapling were waving in the wind, shiny from rain.



The creek was flowing, rippling, babbling along in the bottom of the lowland.  It was evident that it would soon be clogged with the autumn leaves that it gradually pushed along in the current, or shoved off to the muddy banks.  



The orange flowers of Jewelweed were long gone, and the creek banks were covered with brown, wilting plants.



Cottonwood Pond had acquired a new beauty, a Monet-like gathering and scattering of autumn color on its surface.  



I remembered when it had been reduced to just a puddle during the summer, and when it had been revived after we finally had rain.  The next time I went down there, it had gone to almost a puddle again.



This day, it was almost filled to capacity, though not at the levels of last spring.



It was not high enough to send water over the corner, through the seep and on to the creek.  The seep, though, was very soaked from rain, and my boot slipped in the mud.



Despite the rain, an Assassin Bug was hanging out among the dying green plants an the leaf litter. 
Most animal life was hiding somewhere, out of the rain.  I did not see much wildlife.  Even the birds and squirrels were fairly quiet.



I did see one sign of animal life on the pond.  A white speck landed on the pond and hopped around on the surface.  I had not brought equipment for catching it, so I could not get a close look.



Though I was not able to retrieve this bug and look at it closely, it was so distinctive that it didn't take long to identify it through a search.  It is a Springtail, a very tiny wingless being that used to be classified as an insect (three body parts, antennae, three pairs of legs), but now is not. It is of an Order called Colembola.  Sometimes it's called a Water Flea because of its tiny size and jumping habit, but it's not a flea at all.

Most Springtails live in the leaf litter of the forest floor and dine on things like fungi, algae, bacteria, etc., but not live plants.  Some, like this one, are able to spend time on the surface of water.

The distinguishing characteristic of a Springtail is that it has a sort of a mousetrap contraption that makes it jump very far for its size. A forked appendage, called a furcula, is tucked under the body and held there by a structure called a tenaculum.  The Springtail can make the tenaculum release the furcula, just like a mousetrap, and, there goes the bug, springing forward!  To me, it sounds like kind of a fun way to travel.

Here is a web site from New Zealand that includes a photo of an upside-down Springtail.  You can easily see the "mousetrap" contraption:

soilbugs.massey.ac.nz.collembola.php

Another good site that has short and sweet information and photos is:

www.happydranch.com/articles/Springtail.htm



The rotten log in front of the pond had deteriorated more, its old wood shredding to bits (perhaps with the help of animals searching for bugs).  Winged seeds of Ash had fallen there, with a good chance of germinating in the softness. 
  The beginnings of tiny orange mushrooms speckled the wood below.  The root-like mycelia below them, inside the wood, take nourishment from the released nutrients of rotting wood, as hard cell walls break down and allow mycelia to wind its way into the depths.



At one end of the pond, where a young American Hornbeam had been bent by the fallen Cottonwood, it leaves were bringing more attention with shades of  topaz, copper and rust.



On the other side of the root ball, the “little pond” was also almost at capacity, and was also filling with colored leaves.  If there were any prints of passing coyotes or foxes nearby, I couldn't see them for the layer of leaves that had gathered since early morning.



The top of the root ball had changed character.  The “jungle” did not seem so dense as before, with leaves falling, stems becoming bare sticks, and the grand Stinging Nettle plants fading.



On the root ball top, a dying sapling sported a long row of colorfully striped Turkey Tail fungus.  They reminded me of moths I had seen over the summer, at rest with their wings spread.



Nearby, a long cluster of orange sherbet-colored mushrooms was developing on an old log. 
This has been a great time for the vast array of fungi, and it is truly a treasure hunt looking for them in the woods.











   These must be tasty to someone....







               Little brown umbrellas....
I have to say ... aren't these fantastic?!


  Fungus and lichen....





From uphill, the root ball looked like a tiny round forest, with a young, golden Sugar Maple just above the hidden pond and creek.



Tree leaves and winged seeds of Black Maple were beginning to sink below the pond surface and create layers beneath.  Soon they will all settle on the muddy bottom and turn to deep blackish-brown.  Their organic nutrients will leach out and become part of the water and sediment.  The new debris will become a substrate for algae, diatoms and other living materials a the base of Life.  Microfauna, snails, and insect larvae will use that for nourishment and become food for larger organisms.  


 The “siltation spot”

I remembered looking into the pond in the late winter and seeing the rotting leaves and twigs from the previous autumn, gradually becoming covered in food for little critters.



The cycle will continue.  It will be interesting to see what new plants and animals appear throughout the next year.

Revived!







Revived!
October 11, 2013

 
Almost a month has passed, during which we have had substantial rain.  What happened during this time to Cottonwood Pond? 
On the way down the slope, I kept an eye out for wildlife activity, especially any that has been encouraged by the rains.


I spotted something curious on the slope: a pile of granular debris that appeared to have been dug and tossed out from the hole next to it, or maybe carrie111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111d out of the hole by ants.  The debris was much lighter in color than the surrounding soil, looking much like Grape Nuts@ cereal.  Something, seemingly a canine, had left a firm footprint in the debris, close to the hole.  There is a story here, but more clues are needed.


I heard a slight rustle below me, and looked down near an old log just in time to see some fallen leaves move.  There was no breeze.


I quickly poked a leaf out of the way.  A shiny, dark, pointed head with shiny eyes poked up and looked at me, then pulled back into the hole just as quickly.  Salamander?  Lizard? Snake?  I took a photo of the dark hole, but I could see only darkness.


With the rains came more mud, available for crawdad chimney-building.  When these wash or wear away, the crawdad's hidey-hole is revealed.  Other creatures take up residence in abandoned holes, which may have been the case with the salamander-lizard-snake.


Another woods resident, a very young one, loves the renewed moisture, and felt it could venture out from beyond the pond.  
 Can you see it?


Tiny spiders skittered across the leaf litter on the floor.


Tiny umbrella-shaped mushrooms with delicate stems have appeared.  Fungi were flourishing in the post-rain woods.


There were still some orange Jewelweed blossoms, but most of these plants were going to seed.  This one had many bare-ended stalks where seed pods had ripened and fallen, but there was one swollen green pod with darkening seeds inside.


If you touch one ripe pod, even slightly – it explodes!  It explodes very effectively, too, flinging the crunchy brown seeds far and wide.  If you walk through a patch of ripe Jewelweed, or even just shake a plant, you hear the report of many tiny clicks as the pods explode.  A grasshopper landing on the plant can have the same result. 
As I walked to Cottonwood Pond, I heard the tiny clicks of Jewelweed seed and the light taps of dry, early autumn leaves reaching the woods floor.  A squirrel chattered aggressively at an intruder in its territory (me?) and Blue Jays squawked in the trees.
Wings of darting flies glinted as they flew through the dappled sunlight.  


Strands and webbing from spiders, draped between green plants, branches and logs, glistened in the light.

Something else glistened with movement...


The creek was flowing again!


A little bit further, and …  there was Cottonwood Pond – almost full! 
 It was definitely no longer a puddle.  I had not brought my depth-measurer with me, but I could see that this was a significant change.


The “siltation spot” dipped directly into water again.


Sunlight gleamed on the water's edge of the north side, and reflections of overhead trees had reappeared.


A “woolly worm” (or Woolly Bear caterpillar) had found itself directly over the pond – a very curious thing.  It seemed to have taken a wrong turn and found itself in a difficult spot.  If it makes it back to safety, it may get to spin a cocoon and eventually become an Isabella Tiger Moth.


Here is a view of the pond from the southeast, as seen through a patch of Jewelweed.


With all of the excitement of the pond being full again and the creek flowing again, the raccoons had been beating a path between the two, through “the seep”.  

I went to peek at the other side (top) of the root ball.


The “Little Pond” was completely full again!


I noticed holes created in the mud of the root ball top.  I would like to find out what is making them and living in them.


The Elderberry shrub has been growing well from below the side of the root ball.


It has been a long time since I've provided a view of the rest of the tree.  Here is the fallen Cottonwood tree again.

The water in Cottonwood Pond on this day was murky.  The hard rains had stirred the mud again, and tiny particles were still suspended throughout the water, which had no visibility.  I wondered about the effects on tadpoles, frogs, snails, water beetles, water bugs, worms, water fleas, algae, and various tiny larvae.

Part of the definition of a pond in the book Pond Life (A Golden Guide) is “... a quiet body of water so shallow that rooted plants grow completely across it” (as opposed to a lake, which is too deep in the middle for enough light to penetrate and support plant life).  Cottonwood Pond has had no plant life within its borders, during its first year.  I wonder if it ever will support aquatic plant life, or if it is so subject to change that it does not have enough consistency to keep plant life going.

What has happened with Cottonwood Pond, thus far, seems to substantiate certain things that I had hypothesized earlier, and throughout the year:
        The clay in the bottom behaves as a practically impermeable bowl, holding water in the pond so that it does not seep through the bottom.
        When the pond fills to beyond its edge, excess water seeps from a corner to the creek via “the seep”.
        The only source of additional water to the pond is precipitation.
        When the pond is at or below level, the only way water leaves the pond is through evaporation.
        During the part of the summer when we had high temperatures and very little rain, the rate of evaporation far exceeded the amount of water coming in.
        The clay particles are so fine that when turbulence occurs (such as through heavy rains or, to a lesser extent, through disturbance by human or other mammal), it takes a long time for the sediment to settle.  This leaves the water with poor visibility for a long time, which means less sunlight penetrates the water, probably affecting the growth and activity of animals, algae, microorganisms, and the possibility of plants. 

Also, even when the pond is almost dry, some life does persist, so that life cycles can resume developing when conditions improve for aquatic organisms.  This also attracts more predators to the pond, as prey become more abundant.

So, Cottonwood Pond ebbs and flows.  It's a small, shallow place, easily affected by the fickleness of Indiana weather and climate conditions.  Perhaps, because of this, it will always exist as a “new” pond, fluctuating between near-death and complete renewal.  That is a rather unstable world.  What happens within it remains to be seen.