Chlorophyll-a Nitrate+Nitrite Ammonium Ortho-Phosphate Silicate

 

Site 4: Jehu Pond - Chlorophyll-a (μg/L)

 

Surface

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

January

 

 

 

 

 

 

 

NA

NA

NA

NA

NA

February

 

 

 

 

 

 

 

NA

NA

NA

NA

NA

March

 

 

 

 

 

 

 

 

 

 

 

 

April

 

 

 

 

 

 

 

0.0

3.8

 

 

 

May

 

 

 

 

 

 

1.0

 

0.8?

1.4

1.9

 

Early June

 

 

 

 

 

 

3.0

 

0.7

1.3

 

 

Late June

 

 

 

 

 

5.5

1.2

1.4

0.9

5.9

3.3

 

Early July

 

 

 

 

 

7.4

4.1

 

 

1.5

2.9

 

Late July

 

 

 

 

 

8.1

0.8?

 

2.6

2.3

 

 

Early August

 

 

 

 

 

1.8

0.1?

5.7

2.2

5.8

5.0

 

Late August

 

 

 

 

 

8.1

0.2?

 

 

3.9

8.9

 

Early September

 

 

 

 

 

9.2

1.3?

 

 

1.5

6.7

 

Late September

 

 

 

 

 

1.7

2.7

 

 

2.7

4.5

 

October

 

 

 

 

 

1.4

 

 

 

 

0.0

 

November

 

 

 

 

 

0.2

 

 

 

1.3

 

 

December

 

 

 

 

 

 

 

NA

NA

NA

NA

NA

 

 

Site 4: Jehu Pond - Nitrate+Nitrite (μmols/L)

 

Surface

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

January

 

 

 

 

 

 

 

 

 

 

 

 

February

 

 

 

 

 

 

 

 

 

 

 

 

March

 

 

 

 

 

 

 

 

 

 

 

 

April

 

 

 

 

 

 

 

 

0.6

 

 

 

May

 

 

 

 

 

 

 

 

0.0

 

 

 

Early June

 

 

 

 

 

 

 

 

0.0

 

 

 

Late June

 

 

 

 

 

 

 

 

0.0

0.9

 

 

Early July

 

 

 

 

 

 

 

 

12.3

 

 

 

Late July

 

 

 

 

 

 

 

 

0.0

 

 

 

Early August

 

 

 

 

 

 

 

 

0.0

0.0

 

 

Late August

 

 

 

 

 

 

 

 

 

 

 

 

Early September

 

 

 

 

 

 

 

 

 

0.0

 

 

Late September

 

 

 

 

 

 

 

 

 

2.5

 

 

October

 

 

 

 

 

 

 

 

 

 

 

 

November

 

 

 

 

 

 

 

 

 

0.3

 

 

December

 

 

 

 

 

 

 

 

 

 

 

 

 

Site 4: Jehu Pond - Ammonium (μmols/L)

 

Surface

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

January

 

 

 

 

 

 

 

 

 

 

 

 

February

 

 

 

 

 

 

 

 

 

 

 

 

March

 

 

 

 

 

 

 

 

 

 

 

 

April

 

 

 

 

 

 

 

 

1.8

 

 

 

May

 

 

 

 

 

 

 

 

3.0

 

 

 

Early June

 

 

 

 

 

 

 

 

2.0

 

 

 

Late June

 

 

 

 

 

 

 

 

3.9

5.1

 

 

Early July

 

 

 

 

 

 

 

 

4.1

 

 

 

Late July

 

 

 

 

 

 

 

 

5.6

 

 

 

Early August

 

 

 

 

 

 

 

 

7.9

3.4

 

 

Late August

 

 

 

 

 

 

 

 

 

 

 

 

Early September

 

 

 

 

 

 

 

 

 

4.0

 

 

Late September

 

 

 

 

 

 

 

 

 

2.7

 

 

October

 

 

 

 

 

 

 

 

 

 

 

 

November

 

 

 

 

 

 

 

 

 

2.1

 

 

December

 

 

 

 

 

 

 

 

 

 

 

 

 

Site 4: Jehu Pond - Ortho-Phosphate (μmols/L)

 

Surface

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

January