Concept of ecological succession

The concept of ecological succession applied to phytoplankton over
March 6, 2015 – 12:16 pm

Cover imageThe distribution of phytoplankton abundance, biomass and species composition coupled with environmental factors and metazooplankton was studied relatively intensively and over a period of four consecutive years in five ponds featuring a gradient of increasing salinity from near to that of sea water to a nine-fold concentration from 2000 to 2003. The results indicate that the physical characteristics of the water (temperature and salinity) were quite similar over the years. Nutrients, which were concentrated in pond A1, decreased with increases in salt concentration. The composition of the phytoplankton community showed strong seasonality. Diatoms dominated in the first ponds A1, A16 and C2-1, followed by dinoflagellates. Chlorophyceae dominated the phytoplankton community in the hypersaline ponds M2 and TS. Cyanobacteriae were relatively abundant in ponds M2 and TS. The highest phytoplankton density and biomass were found in the ponds with the highest salinity due to the proliferation of Dunaliella salina (Chlorophyta: Volvocales). The inter-annual study of phytoplankton succession in the Sfax solar salterns showed slight differences among the years of study due to the stability of the environmental conditions. Phytoplankton communities were permanently primitive, stage 1 – structured as they failed to build complexity because of salt stress which operates for longer and above any other variables. This reduced frequency of disturbance to the existing course of regulation, allowed the community to “mature” from its “primitive” state, rather than experience frequent structural setbacks.


  • solar salterns;
  • phytoplankton;
  • zooplankton;
  • diversity;
  • disturbance;
  • concept
You might also like
Biology Ecosystem part 18 (Ecological Succession) class 12 XII
Biology Ecosystem part 18 (Ecological Succession) class 12 XII
KEY CONCEPT Ecological succession is a process of change
KEY CONCEPT Ecological succession is a process of change ...
Is your lunch causing global warming? Cars and factories are major sources of greenhouse gas emissions that are heating up the planet. But what you ... An article from: New York Times Upfront
Book (Scholastic, Inc.)
Wallmonkeys Wallmonkeys Ecological Footprint Symbol Peel and Stick Wall Decals (24 in W x 16 in H)
Home (Wallmonkeys)
  • Highest quality semi-gloss vinyl; Vibrant and bright
  • Pre-cut decals; Simply peel and stick
  • Made in the USA
  • Removable and repositionable with no sticky residue
  • Applies to any smooth surface
Related Posts