A pyramid of biomass shows the mass - in grams or kilograms - of the population of the trophic levels in a food chain. The bar for the producer at the bottom of the pyramid of number can be small ...
Trophic cascades are powerful indirect interactions ... Estes & Duggins showed that they suppress the density and biomass of hold-fast grazing urchins and thus have a strong, indirect positive ...
A pyramid of biomass shows the mass - in grams or kilograms - of the population of the trophic levels in a food chain. The bar for the producer at the bottom of the pyramid of number can be small ...