Concept explainers
To distinguish:
Between the eutrophic and oligotrophic lakes.
Introduction:
The freshwater lakes are formed when natural depressions get filled with water. In temperate climates, large lakes possess distinct zones of life. In aquatic ecosystems, the nutrients tend to be concentrated at the bottom as sediments. Thus, in these areas, the level of a nutrient is high and the level of sunlight is low. The freshwater lakes are classified on the basis of nutrient content.
To describe:
A human-made scenario and a natural scenario under which there will be the conversion of the oligotrophic lake into the eutrophic lake.
Introduction:
The freshwater lakes are classified into two categories; oligotrophic and eutrophic. Oligotrophic word refers to ‘poorly fed’ and eutrophic refers to ‘well-fed’.
Want to see the full answer?
Check out a sample textbook solutionChapter 30 Solutions
Biology
- Emergent vegetation grows in the __________ zone of freshwater lakes, (a) littoral (b) limnetic (c) profundal (d) neritic (e) intertidalarrow_forwardWhich of the following biomes is characterized by short growing seasons? a. deserts b. tropical we forests c. Arctic tundra d. savannaarrow_forwardDescribe how nutrients move in the ocean as a result of upwelling.arrow_forward
- Explain what leads to thermal stratification in temperate lakes.arrow_forwardGasping for Oxygen Explain how each of the following contribute to dissolved oxygen decline in aquatic ecosystems: Rising water temperatures slowing streams organic pollutants/eutrophicationarrow_forwardWhich lake zone would be absent in a very shallow lake with good clear water and light can penetrate the entire depth of the lake? aphotic zone benthic zone limnetic zone littoral zonearrow_forward
- List two sources of dissolved oxygen in a lake and based on your understanding of those sources, explain how you would expect the amount of dissolved oxygen in a lake to vary between day and nightarrow_forwardThe part of a freshwater lake that typically contains themost abundant plant and animal life is thea. profundal zone.b. aphotic zone.c. limnetic zone.d. littoral zone.arrow_forwardExplain(in terms of biological or chemical impacts on aquatic ecosystems) why plant nutrients usually are the worst kinds of water pollutants. The term B.O.D. should be part of your answer.arrow_forward
- a) Describe two ways water in ponds and lakes can become acidic. b) What is a limiting nutrient? Give an example of a limiting nutrientarrow_forwardWhere the eutrophication is often seen?arrow_forwardThe process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________. a. dead zoning b. eutrophication c. retrofication d. depletionarrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College