food chains and food webs
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Feeding relationships in an ecosystem can be represented by food chains and food webs. A food chain follows the transfer of energy as one organism eats another, and may be eaten by a third. A food web is more complex, showing how multiple organisms are interconnected through feeding. While energy is lost at each transfer between trophic levels, food webs promote stability in a community. Sunlight provides the original energy that drives producers, such as plants, which are then consumed by primary and secondary consumers in a chain, with less than 1% of the solar energy ultimately retained.
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1. Biotic components are the living things in an ecosystem, including producers, consumers, and decomposers.
2. Producers like plants use photosynthesis to obtain energy from sunlight. Consumers eat producers or other consumers to obtain energy, and can be herbivores, carnivores, or omnivores. Decomposers obtain energy from dead producers and consumers.
3. Food chains show the feeding relationships between organisms, with energy passing from producers to primary, secondary, and tertiary consumers.
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- Food chains show the transfer of energy from producers to primary, secondary, and tertiary consumers and decomposers. Multiple interconnected food chains make up a food web.
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1. Biotic components are the living things in an ecosystem, including producers, consumers, and decomposers.
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Similar to food chains and food webs
Energy flow in ecosystem
It is quite interesting to note that the only producer of food in the entire world is PLANT. All others are consumers, and depend only on plants to provide food to all the living organisms and species.
Energy flow in ecosystem
1) Energy from the sun powers photosynthesis in green plants, which convert carbon dioxide, water, and sunlight into glucose.
2) This chemical energy from glucose is transferred through ecosystems as organisms eat each other, forming food chains.
3) Producers like plants capture energy from the sun which is then consumed by primary consumers like herbivores, and passed up through secondary and tertiary consumers in a trophic pyramid, with decomposers recycling nutrients.
Energy flow (bd mod)
All ecosystems depend on energy from the sun which is converted to chemical energy by producers like plants through photosynthesis. This energy is transferred between trophic levels in a food chain or food web, but around 90% is lost at each level. The inefficiency of energy transfer means longer food chains are less viable as more energy is lost, limiting the productivity of the ecosystem.
Energy flow (bd mod)
All ecosystems depend on energy from the sun which is converted to chemical energy by producers like plants through photosynthesis. This energy is transferred between trophic levels in a food chain or food web, but around 90% is lost at each level. The inefficiency of energy transfer means longer food chains are less viable as more energy is lost, limiting the productivity of the ecosystem.
Energyflowinecosystems 110606120857-phpapp02
1) Photosynthetic organisms like plants capture energy from sunlight and convert it into chemical energy stored as organic molecules. This primary production determines how much energy is available in an ecosystem.
2) Organisms are assigned to trophic levels based on how they obtain energy. Producers are the first level, followed by primary, secondary, and sometimes tertiary consumers. Decomposers recycle nutrients by breaking down dead organisms.
3) Energy is lost at each trophic transfer as heat, so only about 10% of energy is passed up to the next level. This limits the number of trophic levels an ecosystem can support and results in fewer organisms at higher levels in the energy pyramid.
Ecosystem
The document discusses the key components and dynamics of ecosystems. It describes how ecosystems have interacting abiotic and biotic factors that are connected by energy, nutrients, and minerals. Energy flows in one direction through ecosystems from the sun to producers to consumers, while nutrients and minerals circulate and recirculate between factors. The main dynamics of ecosystems include energy flow, primary and secondary production through food chains and webs, trophic levels, and biogeochemical cycles.
Biology 1 Unit 3 notes
This document summarizes key concepts about ecosystems, including:
1) Ecology studies interactions between living things and their environment at different levels of organization, from organisms to ecosystems. Biotic factors are living parts of the environment like plants and animals, while abiotic factors are non-living like sunlight, temperature, and wind.
2) Energy enters ecosystems through producers, mostly plants that use photosynthesis, and flows through food chains of consumers like herbivores, carnivores, and decomposers. Only about 10% of energy is transferred at each trophic level with 90% lost as heat.
3) Matter cycles through ecosystems in biogeochemical cycles like the water, carbon, and nitrogen cycles which move
7761524.ppt
An ecological system consists of a living community and its physical habitat. Energy enters through sunlight and powers primary producers like plants through photosynthesis, generating glucose. Primary consumers then eat producers, and secondary consumers eat primary consumers, forming a food chain that transfers 10% of energy between trophic levels. Decomposers recycle nutrients by breaking down dead organisms.
Concept of Ecosystem.pptx
1. The document discusses various concepts related to ecosystems including producers, consumers, energy flow, and different types of ecosystems such as forest, grassland, desert, and aquatic ecosystems.
2. Key components of ecosystems are discussed including producers such as plants that produce energy, consumers such as herbivores and carnivores, decomposers, food chains and webs, and ecological pyramids.
3. Different types of ecosystems are described like forest ecosystems dominated by trees, grassland ecosystems dominated by grasses, desert ecosystems with low rainfall and vegetation, and aquatic ecosystems including freshwater and marine ecosystems.
Adv Higher Unit2
This document summarizes key concepts in ecology, including energy flow and nutrient cycling within ecosystems. It discusses how photosynthesis by autotrophs fixes energy from the sun, which is then transferred through food chains and webs to heterotrophs in a trophic pyramid. Most energy is lost at each transfer, limiting food chain length. Decomposition recycles nutrients, which are taken up by producers to continue ecosystem functioning.
Food chains and food webs
Carnivores obtain food by killing and eating other animals and require many calories, so individual carnivores must eat many other animals over the course of a year. Herbivores only eat plants and have specialized digestive systems to digest various plant materials. Omnivores eat both plants and other animals or animal products like eggs. A food chain shows a single path of energy transfer between organisms in an ecosystem from producers to primary, secondary, and tertiary consumers. A food web depicts the complex network of interconnected food chains in an ecosystem.
ecology.ppt
1) An ecosystem is a community of living organisms that interact with each other and their non-living environment. It includes biotic components like producers, consumers, and decomposers, as well as abiotic components like sunlight, water, and nutrients.
2) Energy and matter move through an ecosystem via food chains and food webs. Producers use photosynthesis to capture energy from the sun which is then consumed by herbivores, carnivores, and decomposers in a trophic pyramid, with less energy being transferred at each higher trophic level.
3) Ecosystems can be characterized by their primary productivity, the rate at which producers capture energy, and secondary productivity, the rate
Food chain
The food chain is a linear sequence of organisms where nutrients and energy are transferred from one organism to another as they are consumed. It begins with producer organisms like plants, then primary and secondary consumers that eat the producers, and ends with decomposer organisms like bacteria that break down waste. A food chain explains the feeding relationships between organisms at different trophic levels in an ecosystem. Multiple interconnected food chains form a more complex food web that better represents the flow of energy and interactions between species in an environment.
Seminar presentation ecological energy flow in eco system
This document summarizes energy flow within ecosystems. It explains that energy moves through different trophic levels in an ecosystem based on the cycling of energy and nutrients from external sources. Only about 1% of the sun's energy is captured by plants for distribution, but this is enough to support all life. Energy is degraded at each trophic transfer according to the 10% law, with 10-20% available to the next level. Photosynthesis converts solar energy to chemical energy stored in plants. Productivity refers to organic matter production, with net primary productivity equaling total productivity minus energy used for respiration. Food chains arrange organisms transferring energy through eating, and trophic levels designate organism positions. Ecological pyramids graphically represent parameters
food chains and web.ppt.pdf
1) Organisms in an ecosystem can be producers, consumers, or decomposers. Producers like plants generate their own food through photosynthesis. Consumers cannot make their own food and eat other organisms, including primary, secondary, and tertiary consumers. Decomposers break down dead organisms.
2) Food chains show the transfer of energy as organisms eat each other. Producers are first, then primary, secondary, etc. consumers. Food webs show overlapping food chains and how organisms can play different roles.
3) Energy pyramids illustrate the loss of energy at each trophic level, with 10% transferred to the next level and 90% used for life processes.
Energy
Photosynthesis converts sunlight into chemical energy through autotrophs. This process of energy fixation through photosynthesis provides energy for all organisms. Autotrophs include photoautotrophs that use light energy and chemoautotrophs that use inorganic molecules. Heterotrophs obtain energy by consuming other organisms, including herbivores that eat plants, carnivores that eat animals, and omnivores that eat both. Saprotrophs obtain nutrients by decomposing dead and decaying matter. Primary productivity is a measure of the energy converted by autotrophs, while net primary productivity accounts for energy lost to respiration and is available to primary consumers. Energy flows from producers to consumers to decomposers and is
04 energy flow in ecosystems
1) Energy from the sun is absorbed by producers like plants through photosynthesis and converted into chemical energy in sugars. 2) Consumers obtain this energy by eating producers or other consumers. 3) Decomposers break down dead organisms, releasing nutrients back into the environment and completing the energy cycle.
Energy flow and nutrient cycles
This document summarizes nutrient cycling and energy flow in ecosystems. It explains that the sun provides energy for plants through photosynthesis. Plants and primary consumers store this energy, which is transferred to higher trophic levels through feeding relationships. When organisms die, decomposers break down their remains and release nutrients and energy back into the environment, allowing recycling to occur. This maintains nutrient availability and sustains energy flow through trophic levels in a balanced ecosystem.
Dondoyano, glemefer
The food chain shows how organisms transfer energy by consuming other organisms. Producers like plants use photosynthesis to convert sunlight into chemical energy. Primary consumers eat producers, secondary consumers eat primary consumers, and tertiary consumers eat secondary consumers. All organisms eventually die and are decomposed by decomposers, recycling nutrients and completing the food chain. Disruptions to the food chain can impact populations if a food source disappears due to overhunting or overfishing.
demo.pptx
The producer is the grass. The primary consumer is the rabbit. The secondary consumer is the fox. Decomposers like bacteria and fungi break down dead organisms and recycle nutrients. Only about 10% of energy is transferred from one trophic level to the next in the food chain.
Similar to food chains and food webs (20)
Seminar presentation ecological energy flow in eco system
Seminar presentation ecological energy flow in eco system
food chains and food webs
- 1. Feeding relationships: food chains and food webs The most obvious interaction between different organisms in an ecosystem is feeding. During the feeding, one organism is obtaining food-energy and raw materials- from another one. One organism eats another but then may itself be food for a third species. This process is called food chain
- 2. Since so little energy is transferred from the base to the top of a food chain, a top carnivores must eat many herbivores. In turn each herbivore is likely to feed on many different plant species. All these feeding relationships can be shown in a food web. The more complicated the food web, the more stable the community is. The amount of energy that is passed on in a food chain is reduced at every step. Since energy can be neither created nor destroyed, it is not lost but is converted into some other form. During respiration, some energy is transferred to the environment as heat.
- 3. Sun provides the energy to drive the food chain Producers - plants can convert light energy to chemical energy in food compounds Consumers are organisms that obtain food energy from other organisms Primary consumers- herbivores . They obtain their energy in food compound Obtained from producers. Secondary consumers-carnivores . They obtain energy in food compounds Obtained by eating primary consumers Carnivores are eaten by tertiary consumers