X hits on this document

PDF document

Hunter, J. 2007. 20th Annual Keck Symposium; http://keck.wooster.edu/publications - page 4 / 6

20 views

0 shares

0 downloads

0 comments

4 / 6

Hunter, J. 2007. 20th Annual Keck Symposium; http://keck.wooster.edu/publications

PM9 (5-6)

PM6 (4-5)

16

16

14

14

12

12

10

10

8

8

6

6

4

4

2

2

0

0

Dia tom ge ne ra

Dia tom ge ne ra

PM10 (5-6)

PM8 (3-6)

16

16

14

14

12

12

10

10

8

8

6

6

4

4

2

2

0

0

Dia tom ge ne ra

Dia tom ge ne ra

BT9 (5-6)

PMD1 (5-9)

16

16

14

14

12

12

10

10

8

8

6

6

4

4

2

2

0

0

Dia tom ge ne ra

Dia tom ge ne ra

Figure 2. Diatom generic abundance from cores PM1 (5-9), PM 6 (4-5), PM8 (3-6), PM9 (5-6), PM10 (5-6), PFDIC (4-5), BT9 (5-6).

16

14

12

10

PFDIC (4-5)

8

6

4

2

0

easily be transported laterally by both bottom currents and surface currents (Burckle, 1971). Burckle (1971) suggests that “anomalously high concentrations of planktonic forms can exist where none existed in the local, living assemblage.”

Dia tom ge ne ra

per gram were determined. Due to the nature of the study, I was unable to replicate completely the methods of Batarbee et al. (1984).

Broken diatoms may also indicate that displacement has taken place. The study of the Vieques bays was based on methods devised by Batarbee et al. (1984), in which the total diatom abundance per gram of sediment and diatom diversity were used. The diatoms in an aliquot of the original sample were counted and numbers

Gyrosigma suggests seasonal turnover or turbulence, in which the diatoms could be moved from the benthic to the photic zone (Meyer, 2002). Gyrosigma further indicates warm temperatures and a relatively high organic content in the water. The high concentration of Gyrosigma and other diatom species within all three of the bays suggest similar environmental

170

Document info
Document views20
Page views20
Page last viewedSat Dec 10 20:05:54 UTC 2016
Pages6
Paragraphs139
Words1926

Comments