In general the thick leaf litter reduces germination. The jumpers by recycling that litter more rapidly, increase germination as long as the canopy allows sunlight through.
William Bronson wrote:I agree that the soil is improved,but I do wonder if the other species suffer.
Most of the understory around here is honeysuckle, it crowds out persimmon and pawpaw.
If it were more edible I am sure I wouldn't object, but as a steward of the land I am self interested.
Would the wood louse and millipede suffer from competing with jumpers? Are there understory plants that need layers of leafs to sprout in?
Do I care about preserving those plants or animals ?
In my garden, three inches of leaf mulch is making my vines very happy. Would nativized jumpers devoure that layer,leaving bare soil?
Would they eat sewn seeds,small ones, like lettuce?
There is no reason you are forced to use Jumpers. The area you are from has 17 native species of worms and about the same number of naturalized non-native worm species.(introduced 100's of years ago) Surely you can find a type that works in your raised beds without bringing in yet another species? My guess is they are already there in your yard! Just build it and they should come by themselves.
William Bronson wrote: My personal interest stems from the desire to vermicompost directly into the raised beds I prefer to grow in.
These worms are said to be potentially cold hardy, I would love to introduce them to my yard,but I also don't want to be the asshole that bringis bunnies to Australia,Kudzu to the South, or running bamboo to where ever .
In my city,they could do little harm, but in my state?
I live where the "Lazarus lizards" have come to be considered a protected native - never mind that a local kid brought them from Italy not to long ago.
I believe humans and our shenanigans are as " natural" as anything, but I'm trying to consider the long term results of my own personal shenanigans.
I am preparing a vermiculture filter for my sinks grey water and not having to worry too much about the worms overwintering would be great.
Furthermore, my dedicated urban yarden lot would greatly benefit from a native population of compost worms.
William Bronson wrote:Red wriggles are not cold tolerant, as far as I have read. The natives/nativized wormsare not compost worms, but are present and welcomed.
My experiments with worm towers show the locals to be less than enthusiastic composters. They like my leaf mulch, enough to hang out in it anyway, but the food scrapes not so much.
BTW, any link you have to to info on worms around here would be great.