Heckmondwike Grammar School Biology Department Edexcel A
... Biomass. For studying productivity and making pyramids of biomass we need to measure dry mass, since most of a living organism’s mass is made of water, which doesn’t contain energy. To obtain the dry mass a sample of the organisms must be warmed in an oven at about 80°C to evaporate the water, but ...
... Biomass. For studying productivity and making pyramids of biomass we need to measure dry mass, since most of a living organism’s mass is made of water, which doesn’t contain energy. To obtain the dry mass a sample of the organisms must be warmed in an oven at about 80°C to evaporate the water, but ...
NRT109 - Ecology W07
... Demonstrate the significance of ecological energetics Potential Elements of the Performance: • Describe biotic and abiotic sources of energy • Distinguish between and provide examples of food webs, food chains, and ecological pyramids • Describe the ecological relationship between photosynthesis and ...
... Demonstrate the significance of ecological energetics Potential Elements of the Performance: • Describe biotic and abiotic sources of energy • Distinguish between and provide examples of food webs, food chains, and ecological pyramids • Describe the ecological relationship between photosynthesis and ...
Unit IX - Ecology - Lesson Module
... Note to teacher: Some heterotrophs feed on dead organic material, or detritus, and are called detritivores. These include scavengers such as vultures, crabs, and opossums that consume dead animals as well as detritivores such as earthworms, millipedes, and crabs that feed on fragments of dead organi ...
... Note to teacher: Some heterotrophs feed on dead organic material, or detritus, and are called detritivores. These include scavengers such as vultures, crabs, and opossums that consume dead animals as well as detritivores such as earthworms, millipedes, and crabs that feed on fragments of dead organi ...
Ecological Succession
... reproduction, or distribution of organisms is called a limiting factor. ...
... reproduction, or distribution of organisms is called a limiting factor. ...
station 1
... Bacteria and fungi are both very important in nutrient recycling. For example, when food starts to rot often you will see fungus grow on it. Think about a rotting orange. The greenish colored organism that grows on a rotting orange is a fungus. It’s job is to decompose or chemically breakdown the o ...
... Bacteria and fungi are both very important in nutrient recycling. For example, when food starts to rot often you will see fungus grow on it. Think about a rotting orange. The greenish colored organism that grows on a rotting orange is a fungus. It’s job is to decompose or chemically breakdown the o ...
chapter37 - FacStaff Home Page for CBU
... younger tissues. Older tissues may have an adequate supply of minerals that they tend to retain. Deficiency in potassium, nitrogen and phosphorus are the most common. Shortages of micronutrients are rare and tend to be geographically localized because of differences in soil composition. Nutrient def ...
... younger tissues. Older tissues may have an adequate supply of minerals that they tend to retain. Deficiency in potassium, nitrogen and phosphorus are the most common. Shortages of micronutrients are rare and tend to be geographically localized because of differences in soil composition. Nutrient def ...
Endangered Species Acts Must Protect Plants
... not isolated entities, but indicators of larger problems. Rare species help us determine which habitats require special conservation attention if California’s native biological diversity is to survive. ...
... not isolated entities, but indicators of larger problems. Rare species help us determine which habitats require special conservation attention if California’s native biological diversity is to survive. ...
Unit 5 - OCCC.edu
... Cycle chemicals between ______________________ and the _______________________ What are some examples? The _____________________ Cycle Water is essential to all organisms The _____________________ Cycle Carbon-based organic molecules are essential to all organisms The _____________________ Cycle Nit ...
... Cycle chemicals between ______________________ and the _______________________ What are some examples? The _____________________ Cycle Water is essential to all organisms The _____________________ Cycle Carbon-based organic molecules are essential to all organisms The _____________________ Cycle Nit ...
Functional Ecology / AnaEE-France meeting, 28
... The cycling of major elements transcends all levels of biological organization from cells up to the globe. Because of the complexity of involved processes and element-specific properties of the cycles, the different elements are commonly studied in isolation from each other. However, following the r ...
... The cycling of major elements transcends all levels of biological organization from cells up to the globe. Because of the complexity of involved processes and element-specific properties of the cycles, the different elements are commonly studied in isolation from each other. However, following the r ...
I Oak Research Needs Enoch F. Bell
... number of hybrids among the oaks is such that arguments ensue over what species we are actually dealing with—another confounding factor in trying to predict response. Thus, an oak woodland study from a specific area needs testing elsewhere, before its results can be considered as universal truth. As ...
... number of hybrids among the oaks is such that arguments ensue over what species we are actually dealing with—another confounding factor in trying to predict response. Thus, an oak woodland study from a specific area needs testing elsewhere, before its results can be considered as universal truth. As ...
Ecological Succession
... of an ecological community over time. • The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. • Succession occurs in all natural environments. Each environment has a partic ...
... of an ecological community over time. • The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. • Succession occurs in all natural environments. Each environment has a partic ...
Topic 4 and Option D Sample Multiple Choice
... It has been estimated that each organism converts 10% of the mass of the food it consumes into body mass that can be consumed by the next trophic level. To produce 100 kg of benthic fish (a first or primary consumer) consumed by humans therefore requires 1000 kg of phytoplankton or detritus. Calcula ...
... It has been estimated that each organism converts 10% of the mass of the food it consumes into body mass that can be consumed by the next trophic level. To produce 100 kg of benthic fish (a first or primary consumer) consumed by humans therefore requires 1000 kg of phytoplankton or detritus. Calcula ...
2-2 and 2-3 Ecological roles, relationships and symbiosis
... Predator – Prey cycle = the population cycles that ...
... Predator – Prey cycle = the population cycles that ...
4-2 - Biology withMrs. Ellsworth
... • The concept refers primarily to plant life and can be the result of a natural or man-made event. • The primary concept is that the life was previously on the soil, eliminating the need for deposition of new seeds or soil. • Secondary succession is a much more rapid process than primary succession ...
... • The concept refers primarily to plant life and can be the result of a natural or man-made event. • The primary concept is that the life was previously on the soil, eliminating the need for deposition of new seeds or soil. • Secondary succession is a much more rapid process than primary succession ...
Overfishing
... rebuilding takes only one generation, overfishing may be economically foolish, but it is not unsustainable. This definition is widely accepted. Maintaining a biological, social and economic system considers the health of the human ecosystem as well as the marine ecosystem. A fishery which rotates ...
... rebuilding takes only one generation, overfishing may be economically foolish, but it is not unsustainable. This definition is widely accepted. Maintaining a biological, social and economic system considers the health of the human ecosystem as well as the marine ecosystem. A fishery which rotates ...
A. Food webs
... Morphological structures/associations of the organisms involved? Primary nutrients taken up and sources of those nutrients? Costs/benefits of the association – who gets what from whom? ...
... Morphological structures/associations of the organisms involved? Primary nutrients taken up and sources of those nutrients? Costs/benefits of the association – who gets what from whom? ...
Ecology and Energy Flow - Natural History Museum of Los Angeles
... further research from a valid resource. Additionally, they will document contextual data such as location, time (including date and time of day) weather (including temperature and conditions) and any other information they feel is relevant and might be impacting their observations. Students do not n ...
... further research from a valid resource. Additionally, they will document contextual data such as location, time (including date and time of day) weather (including temperature and conditions) and any other information they feel is relevant and might be impacting their observations. Students do not n ...
Characteristics of the Marine Environment
... photosynthesis. The Disphotic Zone occurs below the Photic Zone and is known as the twilight layer. In this zone only a small amount of light is available. Plants do not grow here due to the insufficient light. The darkness layer or Aphotic Zone has no light. About 90% of the ocean is in this layer. ...
... photosynthesis. The Disphotic Zone occurs below the Photic Zone and is known as the twilight layer. In this zone only a small amount of light is available. Plants do not grow here due to the insufficient light. The darkness layer or Aphotic Zone has no light. About 90% of the ocean is in this layer. ...
Bild 1 - lansstyrelsen.se
... Habitat destruction (eg pollution, the impact of invasive species) Fragmentation (eg alteration of habitats resulting in loss of connectivity) - Loss of mechanisms driving ecosystems (pacific salmon as a “nutrient carrier”) - Loss of biodiversity and genetic diversity Are traditional “ecological var ...
... Habitat destruction (eg pollution, the impact of invasive species) Fragmentation (eg alteration of habitats resulting in loss of connectivity) - Loss of mechanisms driving ecosystems (pacific salmon as a “nutrient carrier”) - Loss of biodiversity and genetic diversity Are traditional “ecological var ...
Missed Exam and Assignment Policy
... Biology 3800 Aquatic Ecosystems The course deals how freshwater aquatic ecosystems function. It deals with the topics of energy flow and nutrient cycling, how they involve aquatic organisms, and how they are shaped by physical processes in lakes, rivers and watersheds. The course also outlines probl ...
... Biology 3800 Aquatic Ecosystems The course deals how freshwater aquatic ecosystems function. It deals with the topics of energy flow and nutrient cycling, how they involve aquatic organisms, and how they are shaped by physical processes in lakes, rivers and watersheds. The course also outlines probl ...
Chapter 31
... One of the most important soil nutrients needed by plants are called nitrates (they contain nitrogen). 1. Plants and animals need nitrogen to make protein (remember A, T, G, C are the nitrogenous bases that make up what biologically important “macromolecule”?) ...
... One of the most important soil nutrients needed by plants are called nitrates (they contain nitrogen). 1. Plants and animals need nitrogen to make protein (remember A, T, G, C are the nitrogenous bases that make up what biologically important “macromolecule”?) ...
4-2 What Shapes an Ecosystem? Slide 1 of 39
... Community Interactions When organisms live together in ecological communities, they interact constantly. Community interactions, such as competition, predation, and various forms of symbiosis, can affect an ecosystem. ...
... Community Interactions When organisms live together in ecological communities, they interact constantly. Community interactions, such as competition, predation, and various forms of symbiosis, can affect an ecosystem. ...
2009-2010 BIOLOGY C
... -Pyramids of energy show the amount of energy available at each level of a food chain -A pyramid of biomass show the relative amount of living matter available at each level of an ecosystem. -A pyramid of numbers shows the number of individual organisms at each trophic level in an ecosystem. Vocab f ...
... -Pyramids of energy show the amount of energy available at each level of a food chain -A pyramid of biomass show the relative amount of living matter available at each level of an ecosystem. -A pyramid of numbers shows the number of individual organisms at each trophic level in an ecosystem. Vocab f ...
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.