qualified dividends

Most of my income from investment.  Regarding qualified dividends:

1) If I exceed the limit for married filing jointly ($83,350) am I taxed at the higher rate on the entire amount of qualified dividends or just the amount over the limit?

2) Does anything raise or lower qualified dividends I report?  Does capital loss or gains effect the qualified dividend amount? 

ie. If I have $93,350 of qualified dividends and $10,000 of capital losses does that decrease the qualified dividends to $83,350? 

Same question with standard deduction, does that effect the qualified dividend I report or does the standard deduction just decrease my income tax owed?

Thank you!