Successive changes in animal life during hydrosere, Biology

Successive Changes in Animal Life during Hydrosere

The successive changes in plant communities in the different seral communities of a hydrosere. The question arises, is there any change in the animal life along with the different seres. There are certainly changes in the animal life also, but these may not be as obvious as in case of plant community. In an aquatic ecosystem like this, protozoans Like Paramecium, Amoeba, Euglena and many others are the pioneers. When the planktonic growth forms are very rich, then animals like blue gill fish, sun fish, largemouth bass etc. start appearing. Some caddisflies are also found. In the second stage, that is, the submerged stage, the caddisflies are replaced by other animals that may creep over the submerged vegetation. Thus dragonflies, mayflies and some crustaceans as Asellas, Gammarus, Daphnia, Cypris, and Cyclops inhabit the pond at this stage. At the floating stage, the animals life is chiefly represented by Hydra spp., gill breathing snails, frogs, salamanders, diving beetles, and other insects. There also appear some turtles and snakes. At the reed-swamp stage, the pond becomes shallower, and the bottom starts becoming exposed.

The floating animals are replaced by different species of mayflies and dragonflies, whose nymphs remain attached to submerged parts of the vegetation, and adults present on the surfaces of exposed parts of vegetation. Gill-breathing animals like snails are replaced by lung breathers as Lymnea, Physa and Gyraulus. Among insects, water scorpion, giant water bug, scavenger beetles etc. are present at this stage. The bottom of the pond is now inhabited by some annelids, mud pickerel and bull-heads. Red-winged black birds, kingfisher, great blue heron, swamp sparrow, ducks, musk rats, and beavers become common in the area. At the sedge-meadow stage, the animals like snails as Anodonta, Psidium become common. Finally, at the woodland stage, under terrestrial conditions, most of the terrestrial forms of animal life appear in the area.

Posted Date: 1/21/2013 12:09:56 AM | Location : United States







Related Discussions:- Successive changes in animal life during hydrosere, Assignment Help, Ask Question on Successive changes in animal life during hydrosere, Get Answer, Expert's Help, Successive changes in animal life during hydrosere Discussions

Write discussion on Successive changes in animal life during hydrosere
Your posts are moderated
Related Questions
What is the epidermis..

Explain Differential Media - Culture Media? It allows differentiation among morphologically and biochemically related group of organisms. It contains certain ingredients which

What is an operon, and in what type of organism are operons found? An operon is a series of genes that code for exact products and the regulatory elements that control those ge

Vitamin D (Calciferol - vitamin D2) The main forms are Vitamin D2 (ergocalciferol-plant origin) and vitamin D3 (cholecalciferol-animal origin). Vitamin D2 forms colourless, aci

Write an essay on cytological approach in taxonomy.

Primary Production - Ecosystem Energy accumulated by plants during photosynthesis is called production or more specifically primary production. It is the first and the basic f

Inorganic Substances - Abiotic Components There are about forty elements that are required in various processes of living organisms. Some of these are macronutrients which the

Q. Prevention and Control from escherichia coli? Prevention and Control: Involves avoiding contaminated food and water that have high coliform counts, avoiding unpasteurized ju

Contagious bovine pleuropneumonia (CBPP) This is a highly fatal disease of cattle and of major economic importance in certain tropical countries. It also affects buffaloes, bis

Define the Protective of Vitamin C role as an antioxidant? Vitamin C is a powerful antioxidant because it can donate a hydrogen atom and form a relatively stable ascorbyl free