Ecological succession ppt

It is the process of change in species composition in an ecosystem over time. Each new community makes it harder for the previous community to survive. Click to allow Flash. After you enable Flash, refresh this page and the. The Adobe Flash plugin is needed to view this content.

What is the process of ecological succession? What do you mean by ecological succession? What happens during the ecological succession of an ecosystem? As soil continues to form plants appear. Following the eruption, there is NO life in the blast zone.

Over time, the pioneer species makes the area habitable by other species. Helens in the process of secondary succession. The establishment and development of an ecosystem in an area that was previously uninhabited. When lichens die, they decompose, adding small amounts of organic matter to the rock to make soil.

Species Richness Species richness is the number of species in a community Species evenness is the relative abundance of each species Latitude and Species Richness In general, species richness is greatest near the equator, and larger areas support more species. The sequence of communities forming in an originally lifeless habitats is called primary succession. On lan exposed rocks are first colonized by organisms called lichens. Primary Succession Simple plants like mosses and ferns can grow in the new soil.

A lichen is a fungus and an alga living in a mutualistic relationship. Scientists call the lichen community a pioneer community because it is the first to colonize a new area. Climatographs are used to compare and contrast the temperature and precipitation within each of the ecosystems. Finally, a brief overview of ecological succession is given. PowerPoint Presentation.

This video describes the process of ecological succession and compares primary to secondary succession. It is the change in species and habitat structure that an ecosystem undergoes over time. Plant succession depends on management. Primary succession begins on bare substrate with no life. Secondary succession occurs due to disturbance.

Pioneer plant species move in first. A climax community is a fully mature end stage of succession. Ecological succession is a process of change in the species that make up a community. This package includes the lesson (student and teacher versions), a student lesson handout as a document, and a 4-question exit ticket to assess student understanding.

There are two main types. This presentation is colorful, fun, and applicable. Ecosystem changes during succession include increases in biomass, primary production, respiration, and nutrient retention zMechanisms that drive ecological succession include facilitation, tolerance, and inhibition zCommunity stability may be due to lack of disturbance or community resistance Molles: Ecology 3rdEd. Within any community some species may become less abundant over some time interval, or they may even vanish from the ecosystem altogether. Similarly, over some time interval, other species within the community may become more abundant, or new species may even invade into the community from adjacent ecosystems.

The students will also be interacting with their journals using INB templates for succession. Each INB activity is designed to help students compartmentalize information for a greater understanding of the concept. The community which gets established at the site is called climax community.

It is the aggregation of changes of species structure in an ecological community over time.