By JR on Wednesday, December 16, 2015
Change in Australia's plankton population, as climate changes, threatens human food chain
Amusing that 30 years was chosen below as the start of the period under examination. Carefully choosing your starting and ending points for a sequence is one of the classic ways of lying with statistics. Had they chosen to study the last 18 years -- when there has been NO global warming, the results might have been very different. So it is entirely possible that the effects they have reported originated ENTIRELY in the late 20th century, when there was some slight warming. Is that the case? They do not say. If it is the case, the alarm they are trying to generate is a hoax
Just by the by, there is a bit of a puzzle in the report below. Plankton are much more plentiful in temperate seas than tropical ones so what is meant by saying that plankton have "moved" into cooler (more Southerly) seas? Weren't they there already? Are they saying that tropical plankton are dying out? That could conceivably be but if so, why not say so? The idea of plankton "moving" seems very odd
If we leave aside silly talk about "moving", is their basic finding that plankton are becoming more abundant in cooler seas? If so, that CONTRADICTS global warming -- as warmer seas should have LESS plankton. What a mess of a report!
Australia's plankton population, a vital key in the human food chain, has moved 300 kilometres south in 30 years, new research has found.
Scientists attributed the shift to the warming oceans caused by climate change.
In some regions there was also a shift from cold-water to warm-water plankton species.
The Plankton 2015 report from the CSIRO is based on data from the Integrated Marine Observing System (IMOS), which looks at why plankton is important to ocean health.
The report's lead author, Dr Anthony Richardson, said how much plankton there is, and where it is, determines how many fish, marine mammals and turtles are in the sea.
"The key findings are that plankton, which are really important to people, are changing and changing really in response to climate change," he said.
"Plankton are responsible for about half the oxygen we breathe, and are critical to the marine food web. "They can impact human life."
The report compiles information from plankton studies and data sets from across Australia giving a snapshot of the climate, the state of global fisheries and marine ecosystem health and biodiversity.