________ have been caused by a contribution of factors, some of which are tectonic movements, super volcanic eruption, climate change, and meteor impact which resulted in a new direction in evolution and increased biodiversity.
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Continental drift
________: caused from drifting of the globe, results in new and diverse habits.
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biodiversity hotspot
A(n) ________ is a region with high levels of biodiversity that is under threat from human activities.
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Isolation of populations →
________ caused by environmental changes the surface is divided into curstal, tectonic plates which moved throughout geological time.
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Biodiversity
________: broad concept encompassing total diversity which includes diversity of species, genetic diversity, habitat diversity.
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Biodiversity
broad concept encompassing total diversity which includes diversity of species, genetic diversity, habitat diversity
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Species diversity
usually in communities, product of number of species and their relative proportions
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Habitat diversity
range of habitats in an ecosystem or biome
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Genetic diversity
range of genetic material present in a population of a species
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Natural selection
those more adapted to their environment will flourish and reproduce and those less adapted do not survive for long
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Speciation
gradual change of a species when populations of the same species become separated
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Physical barriers
will split up gene pool, which results in species developing in different directions
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**Species diversity**
usually in communities, product of number of species and their relative proportions
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**Habitat diversity**
range of habitats in an ecosystem or biome
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**Genetic diversity**
range of genetic material present in a population of a species
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**Natural selection**
those more adapted to their environment will flourish and reproduce and those less adapted do not survive for long
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**Speciation**
gradual change of a species when populations of the same species become separated
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**physical barriers**
will split up gene pool, which results in species developing in different directions
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**land bridges**
allows species to invade new areas and for species to relocate, created from lowering of sea levels
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**Continental drift**
caused from drifting of the globe, results in new and diverse habits
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**Mass extinctions**
have been caused by a contribution of factors which resulted in a new direction in evolution and increased biodiversity.
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A biodiversity hotspot
is a region with high levels of biodiversity that is under threat from human activities
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Plate tectonics
study of the movement of the plates
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**complexity of the ecosystem**
the more complex a system is, the more resilient its species will be
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**stage of succession**
older, more resilient and stable ecosystems which undergo succession are less vulnerable than in young ecosystems
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**limiting factors**
changes to materials provided will make it harder and result in species disappearing system is more likely to manage it one of abiotic factors is reduced
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**Inertia**
property of an ecosystem to resist when subjected to a disruptive force
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**Natural hazards**
naturally occurring events that may have a negative impact on the environment and humans
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**Fragmentation of habitat**
the process where a large area is divided up into patchwork of fragments
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**Pollution**
caused by humans can degrade or destroy habitats and make them unsuitable to support the range of species
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**Overexploitation**
has escalated as human populations expand
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**Modern agricultural practices**
can reduce diversity with monocultures, genetic engineering and pesticides
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**Tropical biomes**
contain some of the most globally biodiverse areas in their unsustainable exploitation results in massive losses in biodiversity and their ability to perform globally impotent ecological services
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**International Union for conservation of nature (IUNC)**
published the __red list of threatened species__ in several categories
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**Diversity of species**
in the ecosystem promotes healthy and good environment
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**Conservation biology**
sustainable use and management if natural resources
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**Preservation biology**
attempts to exclude human activity in areas where humans have not yet encroached
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**IGO (intergovernmental organisation)**
composed of different groups from different countries
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**Governmental organisations (GO’s)**
composed of groups funded by a national government
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**Non-governmental organisation (NGO)**
composed of groups run by volunteers, no relation to governments non-profit
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**Designing protected areas**
where a conservation area is within a country is a significant factor in the success of the conservation effort
Studied by 7 people
