It certainly does not mean that CDOM has a marginal effect on light attenuation, but due to the narrow seasonal range of CO[D.sub.Mn] and water colour, their impact on the variation in light climate turned out to be weaker than that of PhB and Chl a, which both vary over a wide range.
Lake depth has a very pronounced impact on the light climate experienced by algae, and thus for their growth rates and realized biomass (Scheffer, 1998).
Comparison of Figs 2b, 4b, and 5b gives a good example of the predominant role of the water level in determining the light climate in Vortsjarv.
"South Africa is not blind to the pressures facing Megadiverse countries and the rest of the world in light climate
change, habitat loss and degradation, over-exploitation and unsustainable use of biological resources, pollution and invasive alien species, which concomitantly precipitate biodiversity loss," said Minister Molewa.
Instead of waiting for national legislation to limit greenhouse gas emissions, California officials struck out on their own to create carbon markets and other mechanisms to help light climate
Thus, the lake had definitely better light climate conditions 200 years ago and the water column was perhaps transparent down to the bottom, as indicated by rich benthic communities.
The lowered lake level, deteriorated light climate, and decreased lake surface water pH are the most important environmental variables that have influenced modern diatom composition in the lake.
The lowered lake level, deteriorated light climate, and decreased pH are the most important environmental variables that have influenced the lake ecosystem with poor buffering capacity vulnerable to the changes in the catchment.
To understand the relation between photosynthesis and forest productivity, gas-exchange data must be related to the distribution of leaf area and to light climate
. Cloudiness and fog may significantly reduce the amounts of solar radiation reaching TMCF during a considerable part of the day.