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 effect of insuline in body ?

Define Antiketogenic Effect of Carbohydrate? Presence of carbohydrates is necessary for normal fat metabolism. In the absence of sufficient carbohydrates, larger amounts of fat

Q. What do you undersand by pollution? The Pollution is the contamination of an ecosystem by factors that are harmful for the equilibrium of its abiotic or biotic constituents.

Uses of Hydrocolloidsfor health Hydrocolloids, together with other dietary fibres are increasingly being seen as contributing to a number of health effects. Some of the hydroco

Sickling occurs in deoxyhemoglobin S, but not in oxyhemoglobin S. Oxyhemoglobin has a small hydrophobic \"pocket\" in a ß chain region located in the interior of the protein. In de

How can the immune memory lead to the efficacy of vaccines and also produce allergies? Vaccines are controlled inoculations of fragments of infectious agents or of inactive inf

Explain Adverse Effects of Cidofovir About 25% of patients discontinue cidofovir because of adverse effects such as nephrotoxicity, neutropenia and metabolic acidosis. Iritis,

What is Interdental Threaded Cleaners The use of floss is recommended around any implant-supported bridge, crown, or bar. Instruct the patient to wrap the floss around the impl

Medical Research - Conservation of Wildlife  Many animal species are used to test drugs and vaccines and to increase our understanding of human health and disease. The nine-b

Apart from any inherited tendency towards coronary heart disease, what are thought to be the four major risk factors?  The four major risk factors for coronary heart disease ar