
doi: 10.82308/9029
La superficies couverte par les macrophytes submerges dans les lacs est fonction du régime d'illumination sous la surface de l'eau. La distribution de la biomasse est reliée à la pente de la zone littorale pour un lac donné, mais les différences entre les lacs sont mieux décrites en tenant compte également de la composition chimique de l'eau. Les éléments nutritifs limitent la biomasse des macrophytes submerges dans la partie supérieure du littoral sujette à l'abrasion par les glaces au printemps, et à l'action des vagues en été. La biomasse en eau plus profonde semble principalement reliée à la pénétration de la lumière et a l'exposition aux vagues.
The area covered by submerged macrophytes in any lake is a function of the underwater light regime. Biamass variability within a lake can be explained by differences in the slope of the littoral, whereas differences among lakes are best explained by both the slope and the water chemistry. Nutrient limitation of submerged biomass is important in shallow littoral areas exposed to ice scouring early in spring and to wave action in the summer, whereas the deeper growing biomass appears to be most influenced by light and wave exposure.
Note:
Freshwater plants, Plants -- Effect of underwater light on
Freshwater plants, Plants -- Effect of underwater light on
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