Please enable JavaScript.
Coggle requires JavaScript to display documents.
Threats to biodiversity 3.3 - Coggle Diagram
Threats to biodiversity 3.3
Significant Ideas
While global biodiversity is difficult to quantify, it is decreasing rapidly due to human activity
2
3
Big Questions
B) To what extent have the solutions emerging from this topic been directed at preventing enviromental impacts, limiting the extent of the enviromental impacts, or restoring systems in which enviromental impacts have already occurred.
E) How are the ussues
F
A
Additional Questions
What indicators can be taken to suddest that a species is a threat from extinction?
How can the population of a species facing the extinction be restored?
What threats do biologicallly significant areaas face and how can the extent of the enviroment impacts be limited?
Estimates of the total number of species on Earth vary consideraby. They are based on mathematical models, which are influenced by classification isssues and a lack of finance for scientific research, resulting in many habitats and groups being significantly under-recorded.
The current rate of species loss are far greater now than in the recent past, due to increased human influence. The human activities that cause species exinction include habitat destruction, introduction of invasive species, pollution, over harvesting and hunting.
Factors that help maintain biodiversity
Complexity of the ecosystem
Stage of succession
Limiting Factors
Resilience
The current rate of species loss are far greater now than in the recent past, due to increased human influence. The humanactivities that cause species extinction include habitat destruction, introduction of invasive species, pollution, overharvesting and hunting
Human Causes
Agriculture Practices
Disease spread
Habitat destruction and fragmentation
Introduced species
Pollution
Population Growth
Over Exploitation
The current rate of species loss are far greater now than in the recent past, due to increased human iinfluence. The human activities that cause species extinction include habitat destruction, introduction of invasive species, pollution, overharvesting and hunting.
TEMA
Fragmentation
Degradation
Loss
Introduced Species
Organisms that are living in an enviroment outside of its normal range or natural enviroment.
Pollution
Air, water and soil contamination
Local pollution e.g oil spills killing seabirds
Enviromental pollution
Run off of fertiilizers into waterways
Climate change alters weather patteers and shifts biomes away from the equator
Population Grow
Technology has allowed humans to become better at catching, hunting and harvesting
Chain saws instead of axes for timber
Hunting fish using sonar and trawling ntes
Growig rural poverty means that many humans living at subsistence level overexploit the enviroment
The international Union of Conservation of Nature (IUCN) publishes data in the "Red List of Threatened Species" in several categories. Factors used to determine the conservation status of a species include:
Population size
Degree of specialization
Distribution
Reproductive potential and behaviour
Geographic range and degree of fragmentation
Quality of habitat
Trophic level
Probability of extinction
Most tropical biomes occur in less economically developed countries (LEDCs) and therefore there is a conflict between exploitation, sustainable development and conservation.