This 13% integrated change in albedo is an estimate for the overall effect of snow algal communities during an entire melt season and compares well with the single time-point albedo reduction of up to 20%, that we and others have previously measured on red pigmented algal snow sites11,39.
As compared to the more diverse, established reef communities, the algal communities on experimental blocks were less diverse and more homogeneous; this may have minimized the importance of complementary feeding among herbivore species over the course of our experiment.
Resource availability and biodiversity effects on the productivity, temporal variability and resistance of experimental algal communities.
Sea urchins are best known for their grazing impacts on algal communities.
The major effects of NPs on both microbial and algal communities include modifications of community compositions and diversities, decreased biomass and changes in community activities.
Six taxa make up >99% of the algal communities (Fig. 2c,d and Supplementary Tables 3 and 4) and all have similar relative abundance values across all samples.
Lutz, S., Anesio, A. M., Villar, S. E. J. & Benning, L. G. Variations of algal communities cause darkening of a Greenland glacier.
Top-down control by grazers appears to be the driving organizing mechanism for algal communities in this system, with strong negative effects of grazing on algal diversity and abundance across all levels of nutrient enrichment.
The data functioned as basis for further calculations on the PSIs of the algal communities [54].
The nature of soil algal communities is the result of the complex influence of vegetation type, soil properties, and climatic conditions (Quesada et al., 1995, 1998).
