unit 5: the interdependence of organisms
... are eaten by carnivores (animals that eat only animals). This sets up what is known as a food chain. Food chains, however, are usually rare. In most ecosystems food chains usually become food webs. A web occurs when one or more levels of the food chain interconnect with other levels for their food s ...
... are eaten by carnivores (animals that eat only animals). This sets up what is known as a food chain. Food chains, however, are usually rare. In most ecosystems food chains usually become food webs. A web occurs when one or more levels of the food chain interconnect with other levels for their food s ...
Marine Ecosystem
... – Second law- with every transformation, some energy is given off as heat • The amount of available energy at each successive level is less than the one below it Energy flow and chemical cycling – Energy enters ecosystem in the form of sunlight, absorbed by producers – Chemicals enter when producers ...
... – Second law- with every transformation, some energy is given off as heat • The amount of available energy at each successive level is less than the one below it Energy flow and chemical cycling – Energy enters ecosystem in the form of sunlight, absorbed by producers – Chemicals enter when producers ...
Food Security, Environmental Change, Biodiversity, and
... “Ecosystem goods and services represent the benefits human populations derive, directly or indirectly from ecosystem functions” (Costanza et al. 1997) ...
... “Ecosystem goods and services represent the benefits human populations derive, directly or indirectly from ecosystem functions” (Costanza et al. 1997) ...
a building block for Green Economy Why is biodiversity important for
... Biodiversity and the economic pillar - Ecosystem Services = foundation for any economic activity – raw materials come from nature - Environmental damages (floods, fires) have negative economic impacts Biodiversity and the social pillar - The poor are highly dependent on biodiversity (1.6 bn people d ...
... Biodiversity and the economic pillar - Ecosystem Services = foundation for any economic activity – raw materials come from nature - Environmental damages (floods, fires) have negative economic impacts Biodiversity and the social pillar - The poor are highly dependent on biodiversity (1.6 bn people d ...
Ch5 Guided Notes
... Therefore, _____________________________________ is available to organisms at higher trophic levels. ...
... Therefore, _____________________________________ is available to organisms at higher trophic levels. ...
Name - Humble ISD
... of organic matter per unit area; it represents the amount of potential food available for each trophic level in an ecosystem. Ex. – if you start off with 5000 grams of grain 500 grams of chicken 50 grams of human tissue. 3. Pyramid of Numbers – Represents the _____________________ of individual o ...
... of organic matter per unit area; it represents the amount of potential food available for each trophic level in an ecosystem. Ex. – if you start off with 5000 grams of grain 500 grams of chicken 50 grams of human tissue. 3. Pyramid of Numbers – Represents the _____________________ of individual o ...
Ecology
... • Evaporation – the process by which water changes from liquid form to an atmospheric gas • Transpiration – the process by which water evaporates from the leaves of plants • Precipitation – water falling from the atmosphere in the form of rain or snow • Condensation – the process by which water chan ...
... • Evaporation – the process by which water changes from liquid form to an atmospheric gas • Transpiration – the process by which water evaporates from the leaves of plants • Precipitation – water falling from the atmosphere in the form of rain or snow • Condensation – the process by which water chan ...
Ecosystems and Communities
... Competition: when organisms of the same or different species attempt to use an ecological resource at the same time Example: in a forest, broad-leaved trees may compete for sunlight by growing tall, spreading out their leaves and blocking sun to shorter plants ...
... Competition: when organisms of the same or different species attempt to use an ecological resource at the same time Example: in a forest, broad-leaved trees may compete for sunlight by growing tall, spreading out their leaves and blocking sun to shorter plants ...
File - Reedley High School Chemistry
... The study of how living things interact with each other and with their environment is called ecology. Ecologists, scientists who study ecology, look at how all the biotic and abiotic factors in an ecosystem are related. They study how organisms react to changes in their environment. Living things co ...
... The study of how living things interact with each other and with their environment is called ecology. Ecologists, scientists who study ecology, look at how all the biotic and abiotic factors in an ecosystem are related. They study how organisms react to changes in their environment. Living things co ...
CH 5 sec 1
... Ecosystems are a network of interactions between living things and the environment Each organism has a means of getting food, water, living space ...
... Ecosystems are a network of interactions between living things and the environment Each organism has a means of getting food, water, living space ...
Chapter 3 Notes
... • Nitrogen gas (N2) makes up 78 percent of Earth’s atmosphere. – Nitrogen-containing substances such as ammonia (NH3), nitrate ions (NO3), and nitrite ions (NO2) are found in soil, in the wastes produced by many organisms, and in dead and decaying organic matter. – Dissolved nitrogen exists in sever ...
... • Nitrogen gas (N2) makes up 78 percent of Earth’s atmosphere. – Nitrogen-containing substances such as ammonia (NH3), nitrate ions (NO3), and nitrite ions (NO2) are found in soil, in the wastes produced by many organisms, and in dead and decaying organic matter. – Dissolved nitrogen exists in sever ...
Biology 20 Unit B Chapter 4 notes 2014
... (b) The wolf population will probably not decrease to zero because the increased moose population provides the remaining wolves with a plentiful supply of food. Assuming that humans are not the cause (hunting, habitat loss, introduction of a competitor or disease, climate change), you would expect t ...
... (b) The wolf population will probably not decrease to zero because the increased moose population provides the remaining wolves with a plentiful supply of food. Assuming that humans are not the cause (hunting, habitat loss, introduction of a competitor or disease, climate change), you would expect t ...
1 - cloudfront.net
... Directions: Complete the following as you watch the Ecological Succession PowerPoint. 1. What is succession? 2. Give examples of abiotic factors that can cause change in a community. 3. Give examples of biotic factors that can cause change in a community. 4. The first organisms to arrive during prim ...
... Directions: Complete the following as you watch the Ecological Succession PowerPoint. 1. What is succession? 2. Give examples of abiotic factors that can cause change in a community. 3. Give examples of biotic factors that can cause change in a community. 4. The first organisms to arrive during prim ...
Ecosystems
... • Brightly colored plants called lichens grow on rocks. • Plants have to adapt to cold temperature and little sunlight • Can have many brightly colored plants, mosses and lichens • Some plants have developed large leaves to absorb as much sun as possible. • Any animals that live her have thick fur a ...
... • Brightly colored plants called lichens grow on rocks. • Plants have to adapt to cold temperature and little sunlight • Can have many brightly colored plants, mosses and lichens • Some plants have developed large leaves to absorb as much sun as possible. • Any animals that live her have thick fur a ...
Chapter 1 - Nicholls State University
... – Abiotic (forest fires) and biotic process – Organic material is an energy source for decomposer organisms ...
... – Abiotic (forest fires) and biotic process – Organic material is an energy source for decomposer organisms ...
Chapter 48: Populations and Communities
... Section 3: Interactions Within and Between Communities Interactions Within and Between Communities ...
... Section 3: Interactions Within and Between Communities Interactions Within and Between Communities ...
Diapozitiv 1
... or pesticide and herbicide use had an appreciable effect on nutrient loss from the ecosystem. ...
... or pesticide and herbicide use had an appreciable effect on nutrient loss from the ecosystem. ...
ppt
... Ecosystems – nutrient cycling In addition to water and carbon cycles, life creates cycles within ecosystems of essential nutrients for producers Phosphorus cycle is typical of most elements – rock reservoir, organic matter derived available pool (also K, Ca, Mg, etc.) ...
... Ecosystems – nutrient cycling In addition to water and carbon cycles, life creates cycles within ecosystems of essential nutrients for producers Phosphorus cycle is typical of most elements – rock reservoir, organic matter derived available pool (also K, Ca, Mg, etc.) ...
Livenv_ecology - OurTeachersPage.com
... Plants and animals cannot use nitrogen directly from the air. Bacteria that live in water, soil, and on plant root tips convert atmospheric nitrogen into another form of nitrogen that can be used by plants and animals. This is known as nitrogen fixation. Nitrogen is returned to the soil whenever an ...
... Plants and animals cannot use nitrogen directly from the air. Bacteria that live in water, soil, and on plant root tips convert atmospheric nitrogen into another form of nitrogen that can be used by plants and animals. This is known as nitrogen fixation. Nitrogen is returned to the soil whenever an ...
Ch 3 Biosphere Notes
... 2. Nitrogen Fixation: bacteria take nitrogen gases and turn it into ammonia, nitrite, and nitrate. 3. Plants and animals use nitrate to make amino acids. 4. Animal dies and decomposes returning nitrates to the soil. 5. Denitrification: other bacteria convert nitrates into nitrogen gas. ...
... 2. Nitrogen Fixation: bacteria take nitrogen gases and turn it into ammonia, nitrite, and nitrate. 3. Plants and animals use nitrate to make amino acids. 4. Animal dies and decomposes returning nitrates to the soil. 5. Denitrification: other bacteria convert nitrates into nitrogen gas. ...
Natural Changes in Ecosystems / Ecological Succession
... to be unchanging over long periods of time. These are also known as climax communities, but “mature” correctly implies that there are still changes occurring, albeit more slowly. 2. Secondary succession - after a major disturbance in an area that already has soil and once had living organisms. F ...
... to be unchanging over long periods of time. These are also known as climax communities, but “mature” correctly implies that there are still changes occurring, albeit more slowly. 2. Secondary succession - after a major disturbance in an area that already has soil and once had living organisms. F ...
Populations, Communities, Ecosystems
... 6. The different organisms like grass or plants, deer or antelope, cheetah or tiger present on same trophic level do not eat each other and are called Competitors. 7. The organisms feeding on different trophic levels like humans are called Omnivores. Humans feed directly on plants and animals. 8. Fo ...
... 6. The different organisms like grass or plants, deer or antelope, cheetah or tiger present on same trophic level do not eat each other and are called Competitors. 7. The organisms feeding on different trophic levels like humans are called Omnivores. Humans feed directly on plants and animals. 8. Fo ...
Ecosystem
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces (although some scientists say that the entire planet is an ecosystem).Energy, water, nitrogen and soil minerals are other essential abiotic components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun. It generally enters the system through photosynthesis, a process that also captures carbon from the atmosphere. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and other microbes.Ecosystems are controlled both by external and internal factors. External factors such as climate, the parent material which forms the soil and topography, control the overall structure of an ecosystem and the way things work within it, but are not themselves influenced by the ecosystem. Other external factors include time and potential biota. Ecosystems are dynamic entities—invariably, they are subject to periodic disturbances and are in the process of recovering from some past disturbance. Ecosystems in similar environments that are located in different parts of the world can have very different characteristics simply because they contain different species. The introduction of non-native species can cause substantial shifts in ecosystem function. Internal factors not only control ecosystem processes but are also controlled by them and are often subject to feedback loops. While the resource inputs are generally controlled by external processes like climate and parent material, the availability of these resources within the ecosystem is controlled by internal factors like decomposition, root competition or shading. Other internal factors include disturbance, succession and the types of species present. Although humans exist and operate within ecosystems, their cumulative effects are large enough to influence external factors like climate.Biodiversity affects ecosystem function, as do the processes of disturbance and succession. Ecosystems provide a variety of goods and services upon which people depend; the principles of ecosystem management suggest that rather than managing individual species, natural resources should be managed at the level of the ecosystem itself. Classifying ecosystems into ecologically homogeneous units is an important step towards effective ecosystem management, but there is no single, agreed-upon way to do this.