http://news.bbc.co.uk/hi/english/sci/tech/newsid_1752000/1752999.stm The researchers say the cooling is causing soil invertebrates to decline by more than 10% annually. Which proves that the trend is less that 10 years long, unless we believe in negative invertebrates, which makes it negligible. After 10 years 35% of the original population would be left at that rate of decline. I'm a bit surprised you don't recognize that those 10% annual will cause an exponential decline. On the other hand this local trend seems to be casued by a tightening of the Antarctic vortex due to a cooler stratosphere as discussed in other threads, so it certainly does not provide any evidence against global warming