Last Updated on July 22, 2022 by amin
Energy Flow and Nutrient Cycles in Marine Ecosystems – Lecture 7.2 – Marine Biology – Biol 321
Why are certain species classified as invasive Why are certain species classified as invasive?
Why are certain species classified as “invasive”? They increase the biodiversity of the community. … They are native to the community. They are introduced to new habitats where there are no predators and/or competitors.
Which activity occurs in the process of photosynthesis?
photosynthesis the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants light energy is captured and used to convert water carbon dioxide and minerals into oxygen and energy-rich organic compounds.
Why do invasive species take over an area when they are introduced quizlet?
Invasive species are organisms that can take over the habitat of native species or invade their bodies thus weakening their immune systems. Introduced invasive species compete against native species for essential resources such as food and habitat.
Why do invasive animals cause so much harm to local ecosystems quizlet?
Invasive species can decrease biodiversity due to changes made to landscapes out competition of native species or introduction of diseases. … Reproducing invasive species can form hybrids and displace native populations as well as decreasing food sources and impacting food webs. You just studied 28 terms!
Which of the following elements is most likely to limit primary production in freshwater lakes?
The correct answer is Phosphorus. Phosphorus is most likely to limit primary production in freshwater lakes. Primary production is the process of conversion of light energy to chemical energy by green plants. For the aquatic ecosystem usually phytoplankton does this work.
Why are organisms not equally distributed throughout the biosphere?
Species are neither randomly nor evenly distributed because their distribution is closely related to the physical conditions to which they are adapted. … Some species are narrowly adapted to very limited conditions in one area whereas other species such as the wolf were once found across many continents.
Why are certain species classified as invasive quizlet?
Why are certain species classified as “invasive”? They are introduced to new habitats where there are no predators and/or competitors.
Why is sunlight important to marine biomes?
The sunlight – in part – allows the diversity of life seen in this ecosystem. … Sunlight of course is necessary for photosynthesis which brings energy into an ecosystem. So the availability of that sunlight has a direct impact on the productivity and biodiversity of aquatic ecosystems.
What role does sunlight play in aquatic ecosystems?
3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants algae and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
What causes water from the deep to be drawn upwards towards the surface?
Upwelling is a process in which deep cold water rises toward the surface. … Conditions are optimal for upwelling along the coast when winds blow along the shore. Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. See also how do animals attract a mate
How does water affect the rate of photosynthesis in plants?
Water affects the rate of photosynthesis indirectly. Water stress causes the stomata to close and thereby reduces carbon dioxide availability. … Water stress also results in wilting of leaves and therefore reduces metabolic activity performed by leaves.
Why are invasive species so harmful to ecosystems quizlet?
Invasive species can make a natural habitat unsuitable for native species by changing its structure or composition. This may mean changed light levels altered soil chemistry or increased soil erosion. They can also upset the balance of nutrient cycling pollination and energy flow.
Which factors can limit marine productivity?
In the vast unproductive low- and mid-latitude ocean warm and sunlit surface water is separated from cold nutrient-rich interior water by a strong density difference that restricts mixing of water and thereby reduces nutrient supply which becomes the limiting factor for productivity.
AQUATIC ECOSYSTEMS ?️? (Characteristics TYPES and Examples)
Why are photosynthetic algae limited to surface water in marine ecosystems quizlet?
A community in ecology is defined as ________. What is the difference between a community and an ecosystem? A community includes interacting populations without their surrounding environment while an ecosystem includes the surrounding environment. A wolf eats a rabbit that eats grass.
Does photosynthesis require water?
To perform photosynthesis plants need three things: carbon dioxide water and sunlight. for photosynthesis. … Plants also require water to make their food. See also how do fennec foxes survive in the desert
What is the primary limiting factor for aquatic primary production?
The availability of nutrients for primary producers has long been thought to be the main limiting factor for primary productivity in nutrient-poor lake ecosystems.
Why are certain species classified as invasive?
An invasive species is an organism that causes ecological or economic harm in a new environment where it is not native. … Invasive species are capable of causing extinctions of native plants and animals reducing biodiversity competing with native organisms for limited resources and altering habitats.
What limits primary production in aquatic ecosystems?
More than light nutrients limit primary production in aquatic ecosystems. A limiting nutrient is an element that must be added for production to increase in a particular area. The nutrient most often limiting marine production is either nitrogen or phosphorus.
Why Is Photosynthesis Limited To Surface Water In Marine Ecosystems??
Why is photosynthesis limited to surface water in marine ecosystems? … Visible light cannot penetrate deeply into the ocean even when the water is clear. (Most sunlight is absorbed within 10 meters below the surface and almost no light reaches below 150 meters.)
What are three ways invasive species are a threat to our environment quizlet?
Name direct ways invasive species pose threats.
- Preying on native species.
- Competing for food.
- Carrying disease.
- Preventing reproducing or killing young.
See also what causes surface currents to form
What factors affect photosynthesis?
Three factors can limit the rate of photosynthesis: light intensity carbon dioxide concentration and temperature.
Why do invasive animals cause so much harm to local ecosystems?
Invasive species are harmful to our natural resources (fish wildlife plants and overall ecosystem health) because they disrupt natural communities and ecological processes. … The invasive species can outcompete the native species for food and habitats and sometimes even cause their extinction.
What are the two primary environmental factors that limit levels of photosynthesis in the ocean?
For photosynthetic organisms (like kelp or phytoplankton) are often limited by nutrients such as nitrogen or phosphorus. Organisms that eat other organisms are often limited by food availability or the abundance of predators that may eat them.
What limits the net primary production in aquatic ecosystems such as lakes and streams?
What limits the net primary production in aquatic ecosystems such as lakes and streams? The amount of light energy converted to chemical energy by an ecosystem’s autotrophs in a given time period is an ecosystem’s primary production limits the net primary production in aquatic ecosystems such as lakes and streams.
How environmental factors limit the distribution and abundance of species in an ecosystem?
Both physical (temperature rainfall) and biotic (predators competitors) factors may limit the survival and reproduction of a species and hence its local density and geographic distribution.
What are the factors that limit ecosystem functionality?
Limiting factors of an ecosystem include disease severe climate and weather changes predator-prey relationships commercial development environmental pollution and more.
Why are photosynthetic algae limited to surface water in marine ecosystems?
Why is photosynthesis limited to surface water in marine ecosystems? Visible light cannot penetrate deeply into the ocean even when the water is clear.
Do aquatic ecosystems need sunlight Why or why not?
Do aquatic ecosystems need sunlight? Of course. … Sunlight of course is necessary for photosynthesis which brings energy into an ecosystem. So the availability of that sunlight has a direct impact on the productivity and biodiversity of aquatic ecosystems.
What limits the distribution of organisms that can survive in a given habitat based on how hot or cold it gets?
Temperature can limit the distribution of living things. Animals faced with temperature fluctuations may respond with adaptations such as migration in order to survive. Migration the movement from one place to another is an adaptation found in many animals including many that inhabit seasonally cold climates.
What uses energy directly from the sun for photosynthesis in the marine ecosystem?
(Phytoplankton such as algae are the plants that make photosynthesis happen in the ocean. These tiny plants live on the surface of the water where they collect their energy from the sun and use it along with nutrients in the water to grow and feed ocean life.)