I'm so sorry i missed this before but pine wood is very toxic its releases chemicals into the water along with oils. I remeber reading up on it a while back, altho you can use Pine wood thats been soaking in bogs for a while as most of the oils and toxins have leeched out.
Pine sap is also highly toxic to insects (defense mechanism) and as crustaceans are not too far away from them along the tree, I'd guess that bathing in the toxins are whats killing your shimp.
I'll do a bit of diggings see what I can pull up.
Ok. So the first thing I've found whislt talking to a friend of mine is that pine tree's are amazing at creating toxins to slow plant growth giving them an advantage over competitors. ~
" In most cases decaying needles, needle leachate, and field soils significantly reduced germination and radicle growth ofAndropogon gerardii andA. scoparius, pine-associated herbaceous species"
Effects of pine-produced chemicals on selected understory species in aPinus ponderosa community M. A. K. Lodhi and Keith T. Killingbeck Journal of Chemical Ecology Volume 8, Number 1, 275-283
Pine sap is also highly toxic to insects (defense mechanism) and as crustaceans are not too far away from them along the tree, I'd guess that bathing in the toxins are whats killing your shimp.
I'll do a bit of diggings see what I can pull up.
Ok. So the first thing I've found whislt talking to a friend of mine is that pine tree's are amazing at creating toxins to slow plant growth giving them an advantage over competitors. ~
" In most cases decaying needles, needle leachate, and field soils significantly reduced germination and radicle growth ofAndropogon gerardii andA. scoparius, pine-associated herbaceous species"
Effects of pine-produced chemicals on selected understory species in aPinus ponderosa community M. A. K. Lodhi and Keith T. Killingbeck Journal of Chemical Ecology Volume 8, Number 1, 275-283