3.2 Flashcards
What is ecological succession
transition in species composition over time
what are the three main stages of ecological succession
pioneer community, serial stages, and climax community
what are the two main parts of the ecological succession
primary and secondary
what is primary succession
it is the original succession where there is no soil or any thing to build with, it starts usually with barren rock.
what is secondary succession
it is a second succession where some major event happened that massively decreased the population size if not completely destroyed it but there is still soil or something to work with.
what is pioneer species
it is the first species in succession that make up the soil like lichen, moss, algae, and ferns
what is climax community
it is the full potential of a community and looks different in different biomes
what are the serial stages
they are the stages in between climax and pioneer where most of the growing happens
does secondary succession lead to more or less biodiversity, give an example
yes, it does, when a tree dies in a forest it releases nutrients for more plants to grow.
what is species diversity made of
richness and evenness
what is species richness
it is the number of different types of species
what is species evenness
it is the proportions of species
the more niches there is…
the more species
how does richness and evenness affect biodiversity
the more richness and the more evenness the more diversity
what is the highest eveness
