* Crude oil sees first decline in four days
* IMF to cut global growth forecast further to 1-1.5 pct
* Dollar climbs vs euro, pressuring commodities (Updates throughout, changes dateline from PERTH)
By Christopher Johnson
LONDON, Jan 26 (Reuters) - Oil fell by around $1 towards $45 on Monday as forecasts of a deepening global economic downturn and a stronger dollar outweighed evidence that OPEC oil producers are reducing output.
An International Monetary Fund official said on Sunday the agency would cut its 2009 global growth forecast again, this time to between 1-1.5 percent from a previous estimate of 2.2 percent, as economic conditions deteriorate. [
]Oil demand is closely tied to economic growth and many economists now predict a fall in energy use this year as recession hits most of the largest developed economies.
U.S. light crude for March delivery <CLc1> fell $1.22 to a low of $45.25 before recovering to around $45.50 by 0844 GMT. The contract rose $2.80, or 6.41 percent, to $46.47 a barrel on Friday, crowning a rebound in the front-month contract from below $33 a barrel a week ago.
London Brent crude <LCOc1> slipped $1.00 to $47.37.
"The market is correcting from the sharp rally on Friday," said Christopher Bellew, broker at Bache Commodities in London. "Essentially the market is range-bound with poor demand being balanced by OPEC production cuts."
The market was fairly thin in Asian trading, due to holidays that shut most of the region's big trading centres except Japan, but was expected to pick up later.
DOLLAR
Analysts said oil was also again moving inversely to the dollar, which rose nearly 1 percent against the euro to almost the six-week high it hit on Friday as weak British and euro zone data led investors to take refuge in the greenback. [
]The main driver of oil's sharp $2 rally on Friday was evidence of OPEC making good on most of its pledged 2.2 million barrel a day (bpd) production cut this month, with oil consultant Petrologistics estimating OPEC output would fall by 1.55 million barrels per day in January. [
]But worries about the health of the global economy and its impact on world energy demand halted the rally.
Announcing the forthcoming cut in the IMF's growth forecast, Axel Bertuch-Samuels, deputy director of the IMF's monetary and capital markets department, told Reuters on Sunday that 2009 would be enormously challenging for the world's economy.
"Global economic prospects have deteriorated in recent months, consumer and business confidence have dropped to levels that we have not seen in decades, and activity too has dropped sharply," he said.
Dismal economic data released last week also signalled the deepening of the global economic downturn, with British data confirming the first UK recession since 1991, while Spanish unemployment surged to a nine-year high. [
]Hope that government spending will revive economies has been tempered by fears that the situation may be worse than imagined.
On Sunday, President Barack Obama's top economic adviser would not rule out the possibility that more money may be needed to stabilise the U.S. financial system as a deep recession increases banks' losses. [
]Crude oil speculators on the New York Mercantile Exchange trimmed new long positions in the week to Jan. 20, according to U.S. Commodity Futures Trading Commission data. [
](Reporting by Peg Mackey and Christopher Johnson in London and Fayen Wong in Perth; editing by Anthony Barker)