soil collapse at lake coast

absorb accumulated accumulation acidic bog broken carbon cause coal coast coastal collapse compaction compression danger dead deposits destruction dewatering edge effect environment environmental fen formation freshwater fuel global lake land limnology material mires moss muskeg newfoundland off ombotrophic organic peat plant quagmires raised recycle rehydrate sections sedimentary sequence shore sink slump source sphagnum storm tannic threaten time vegetation warming weakened wet woody melt melting damage