Hydrological Cycle
This is the process driven by solar radiation that describes the continuous movement of water on, above, and below the surface of the Earth.
hydrological cycle
This is a major global concern that arises when the demand for fresh water exceeds the available supply.
water security
This term refers to the farming of aquatic organisms, such as fish or shellfish.
aquaculture
This acronym stands for the measure of the amount of dissolved oxygen required to break down organic material in a water sample.
BOD (Biochemical Oxygen Demand)
This term describes the flow where water in its solid form (like ice or snow) turns directly into water vapor without first melting.
sublimation
This process of removing salt from seawater is one method to enhance freshwater supplies.
desalination
The highest rates of aquatic productivity are found here, where upwellings and nutrient enrichment of surface waters occur.
coastlines or shallow seas
This process occurs when lakes or coastal waters receive excess nutrient inputs, leading to an explosive growth of plants and algae.
eutrophication
Human activities such as agriculture, deforestation, and urbanization have a significant impact on these two parts of the water cycle.
surface runoff and infiltration
This strategy for reducing freshwater demand involves reusing water from sinks, showers, and washing machines.
grey-water recycling
This concept, applied to fish stocks, is the maximum level at which a natural resource can be routinely exploited without long-term depletion.
Maximum Sustainable Yield (MSY)
These species, whose presence or absence indicates the level of pollution, can be used to indirectly measure water quality.
indicator species
This large-scale ocean circulation system, driven by differences in temperature and salinity, distributes heat around the globe.
ocean conveyor belt (or thermohaline circulation)
This is a primary reason why shared freshwater resources, like rivers that flow through multiple countries, can lead to international conflict.
inequitable availability and uneven distribution
Name two environmental issues associated with aquaculture.
loss of habitats, pollution (from feed/medicines), spread of disease, or escaped species
According to the pollution management model this is the most fundamental strategy, which involves promoting alternative technologies and lifestyles.
altering human activity