. Bulletin. Science. FMAMJ J ASO Time (months) 1800 1000 h 600 5 c CO 200 S - â¢C 70- 'e 2 60- c fx S 50- re I 4°~ c 30- | 20- \ / \ \ 1 a 1 A ' \ / $ 10- Y *-â */ 0^ i i i iâiârâI 1 1 1 1 1 1600 NDJFMAMJJASON Time (months) E1400 o _: â 1200 > i c1000 c cv â a ca 0) o 800 o JZ * £ 600 CO CD ^ 400 0 0 d â¢, /uAa/v â¢-V \ / â 5 S o 5 5 35 fe E 3 C c NDJFMAMJJASON Time (months) 1 5 Fig. 1. Mean monthly values for Zostera marina standing stock variables and leaf area (LAI) measured in San Quintin Bay during the "normal" year of 1992-1993. index l(ti+
. Bulletin. Science. FMAMJ J ASO Time (months) 1800 1000 h 600 5 c CO 200 S - â¢C 70- 'e 2 60- c fx S 50- re I 4°~ c 30- | 20- \ / \ \ 1 a 1 A ' \ / $ 10- Y *-â */ 0^ i i i iâiârâI 1 1 1 1 1 1600 NDJFMAMJJASON Time (months) E1400 o _: â 1200 > i c1000 c cv â a ca 0) o 800 o JZ * £ 600 CO CD ^ 400 0 0 d â¢, /uAa/v â¢-V \ / â 5 S o 5 5 35 fe E 3 C c NDJFMAMJJASON Time (months) 1 5 Fig. 1. Mean monthly values for Zostera marina standing stock variables and leaf area (LAI) measured in San Quintin Bay during the "normal" year of 1992-1993. index l(ti+1) = L ~ [J. - /(f,)>G(Vl+l) where by virtue of equation (3) G(râ ti+l) has the form: G(tâ ti+1) = -2 a, 7=1 h, THt) dt (5) (6) In order to corroborate empirically the assumption of equation (3) we fitted equation (5) to available data on leaf length and sea surface temperature. Deter- mination coefficients, graphs of predicted vs observed values and residual analyses are presented in the results section. The mean square regression method and the statistical package STATISTICA were used in these fittings. Results Maximum leaf width was mm and occurred in November 1992, and max- imum leaf length of 290 mm was reached in August 1993 (Fig 1). Leaf-widths close to maximum values also occurred in September and November 1993. Changes in mean leaf length and width followed the same variation pattern; the maximum for both measurements was attained by late summer (Fig. la). Similar results were obtained for mean leaf area and mean leaf biomass; both measure- ments reached their maximum in August, (Fig. lb), these were 1543 m m2 and g respectively. Biomass per unit area reached a maximum of g m 2 in August, but another peak of g m 2 occurred in May (Fig. lc). This was. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may
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