Final answer:
Aquatic organisms' dive depth and time are influenced by abiotic factors such as salinity, sunlight, temperature, and dissolved oxygen. High salinity levels and lack of sunlight due to algal blooms can be detrimental to freshwater biome life. Cold water contains more dissolved oxygen, which is crucial for respiration in aquatic organisms.
Step-by-step explanation:
The factors that influence the dive depth and dive time of aquatic organisms are primarily related to abiotic factors in their environment. These include salinity, sunlight, temperature, and dissolved oxygen levels. In freshwater biomes, high salinity can be detrimental as organisms cannot tolerate excessive salt.
Photosynthetic organisms are affected by the availability of sunlight, especially when algal blooms reduce light penetration, impeding their ability to produce food, which in turn affects the entire food web due to their role as primary producers. The decomposition of these dead organisms, alongside the depletion of oxygen by algal blooms, could cause a die-off of species requiring oxygen. Water temperature is also significant as it impacts both the rate of growth and metabolism of organisms as well as the level of dissolved oxygen in the water, which is higher in cold water.
Salinity, currents, and tidal changes are other abiotic factors that play roles in aquatic ecosystems. These can influence the concentration of dissolved oxygen and thus affect respiration in aquatic life. Additionally, the temperature layers within bodies of water, created by solar radiation, affect living conditions for organisms at various depths.