This year, natural resources funds have been the warm, dry place in the market's tempest.

These funds, which are the subject of today's Daily Screen, typically invest in stocks of companies that look for, refine and/or sell oil and natural gas. As you might imagine, these stocks rise and fall with the prices of commodities like oil and gas. With those prices skyrocketing this year, these funds have had a solid run in a tough environment for growth stocks, gaining 18% on average since Jan. 1, compared to the

S&P 500's 8.7% loss.

Of course, there's a downside to these funds' reliance on commodities prices, too -- mainly that they have virtually nowhere to hide when they tumble as they did in 1998. That year, the average natural resources fund lost more than 25%, according to

Morningstar

. And it's yet to be seen what the current tension in the Middle East will do to oil prices. But that's why the asset-allocation types dutifully remind us that mercurial sector funds are long-term investments for no more than 5% or so of your portfolio.

We've picked through the category to single out those funds that beat their average peer over the past one- and three-year periods. After we look at the funds, we'll peek under the hood at the stocks that pushed these funds higher. Ten funds meet our criteria, and here they are, ranked by their one-year return.

As you can see, there's a

Fidelity

fund here for just about anyone, whether you want to invest broadly in the energy sector (

(FSENX) - Get Report

Fidelity Select Energy), in energy services (

(FSESX) - Get Report

Fidelity Select Energy Services) or in natural gas (

(FSNGX) - Get Report

Fidelity Select Natural Gas). One thing that might turn you off, though, is that each of these funds, as well as

(FAGNX) - Get Report

Fidelity Advisor Natural Resources, levies a

front-end

TheStreet Recommends

load or sales charge.

If you're a strict no-load investor, you might look at

(VGENX) - Get Report

Vanguard Energy, where Ernst von Metzsch has held the reins since the fund's 1984 inception. Over the years he has built a solid track record through a variety of market environments. To get his thoughts on the sector, check out this

10 Questions interview .

Do-it-yourselfers also might take a look at

(FSTEX) - Get Report

Invesco Energy and

(UMESX) - Get Report

Excelsior Energy & Natural Resources, two of the category's least volatile options, according to Morningstar risk data.

When it comes to the stocks that tend to pop up in these funds, there's not too much mystery. When most people think oil and gas, they think

ExxonMobil

(XOM) - Get Report

,

Chevron

(CHV)

and

Halliburton

(HAL) - Get Report

. You'll find all of those stocks in these leading funds.