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Wednesday, April 1, 2015

Go through the trench, not over it!



I delicately tip-toe along a semi-submerged branch with my heavy backpack threatening to throw off my balance.  I leap onto a rock and almost fall backward, but catch myself on a tree near the edge of the track.  With no more protrusions in range, I gingerly test the ground with my toe, judge it solid, and step forward—it doesn’t hold my weight.  I sink into the trail to my knees and bang my shin on a submerged rock… for the fifth time that day…

So this is mud season…



While hiking during the mud season may promise hard-core adventures, such excursions not only endanger oneself (and make one miserable in the process) but also harm the environment through erosion and vegetation destruction.  Mud season in the Adirondacks is exactly what the name implies: a whole lot of mud.  Between the melting snow pack and unpredictable weather, water enters the soil at too great a velocity and in too great a volume to be absorbed by the forest, so in many cases (especially along hiking trails where the soil is already more impermeable than in other less intensely traveled areas) the water simply sits on the surface.  

Many hikers try to circumnavigate muddy trails by walking along the side of the trail, or taking short detours up through the trees, but this is exactly the wrong response.  During the spring, young vegetative shoots begin to penetrate through the mud to absorb the sun in the absence of a dense canopy (or in the case of conifer dominated stands, in disturbed sites along the edges of trails).  Hikers avoiding the muddy patches tramp on the juvenile plants at their most vulnerable moments.  Without significant root systems or protected tissue, the plants do not survive the encounter.  This event especially becomes a problem above 3,000 ft where more than just the seedlings suffer from shallow rooting.  A study by E.H. Ketchledge et al. (1985) found that minimal human foot traffic in fragile alpine environments can permanently damage plant communities.  Further, avoiding the trails causes problems with soil erosion, especially on steep trails.  Every time a hiker attempts to avoid the worst of the muck by going around it, he or she widens the trail and, consequently, the disaster area.  Go through the trench, not over it!

While forcing hikers to go through the mud may seem to perpetuate deep mud pits, containing the worst of the erosion within the trail is less environmentally damaging than spreading the mud to the rest of the forest.  When the weather (and mud) is especially bad, the DEC will often voluntarily close trails to the public to protect the fragile environments.

Thus, with April and mud season upon us, try to find other methods of recreation in the Adirondacks.  Don’t spread the mud.


 Photo Source: Taken by Emily Snider on the Dusky Track in NZ (same origin as the anecdote at the beginning of the post)... They have mud season there, too!

References:
http://www.adirondack.net/hiking/spring-hiking/

Crane, Dan.  "Mud Season: Sloshing through the Wet Trails."  Adirondack Almanack.  http://www.adirondackalmanack.com/2011/04/mud-season-sloshing-through-wet-trails.html

Ketchledge E.H., R.E. Leonard, N.A. Richards, P.F. Craul, A.R. Eschner.  1985.  Rehabilitation of Alpine Vegetation in the Adirondack Mountains of New York.  U.S. Department of Agriculture.

2 comments:

  1. I have not hiked much during mud season, but even in the fall I have encountered very wet and muddy trails. My usual approach is to cross the worst parts by jumping on stones and logs, but that does not always work. I do not really go off of the trail, but I also have not thought about the consequences of foot traffic on young vegetation. Now that I am aware of it, I will do my best to avoid it. Thanks for bringing this up!

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  2. Hey Emily, this was an awesome post. I wrote a post a few weeks ago about using ATVs and mountain bikes on trail, but didn't even touch on the impact of walking on trails. You made a great point about how it's really bad if we kill/uproot the plants, because they won't be able to hold the soil in place. Also roots turn the soil and release gases into the soil that hold the pores open. I'm in hydrogeology right now and we have studied the permeability and porosity of geologic layers like sandstone, gravel, or soil --like on trails. Without porous soil, the water will sit on top and create muddy puddles, like you mentioned, because the pores of the soil will be too small to allow water through. This is also why trails are so bad at absorbing water; they have been trampled and packed down so thoroughly, that the pores are tiny and the soil can only hold a small amount of water.

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