Productivity in ecology refers to the rate of biomass generation in an ecosystem, expressed in units of mass per volume per unit of time. It can be related to dry matter or the mass of generated carbon. The most productive ecosystems are fertile estuaries and marshes, coral reefs, terrestrial vegetation on moist alluvial deposits, and intensive agriculture.
Biological diversity changes dramatically along the gradient of ecosystem productivity, particularly visible in plant communities that transform from marginal to marginal. Productivity within an ecosystem is defined as the percentage of energy entering the ecosystem incorporated into biomass in a particular trophic level. Biomass is the total mass in a unit area at the trophic level.
The relationship between biodiversity (e.g., species richness) and associated ecosystem functions (e.g., net annual primary productivity) is governed by a suite of abiotic and climatic factors. Primary productivity is influenced by nutrient availability, temperature, and water availability, while secondary productivity is influenced by heterotrophs like animals.
Net primary productivity varies among ecosystems and depends on factors like solar energy input, temperature and moisture levels, carbon dioxide, and other factors. The productivity of an ecosystem refers to the rate of biomass production, which is the amount of organic matter accumulated per unit area per unit time. Ecosystems with ample sunlight, warm, wet, and fertile conditions are the most productive, such as tropical rainforests, estuaries, reefs, and other natural ecosystems.
📹 Primary productivity in ecosystems| Matter and Energy Flow| AP Environmental Science| Khan Academy
Primary productivity is the rate at which solar energy (sunlight) is converted into organic compounds via photosynthesis over a unit …
What are the factors that influence ecosystem productivity?
Productivity is the rate of organic matter or biomass production in an ecosystem, expressed in terms of gm-2/yr or kcal/m-2/yr. It is influenced by two main factors: the availability of resources needed for photosynthesis, such as water, carbon dioxide, and light, and the diversity of species in that ecosystem. Different organisms use resources in different ways to build their biomass, such as birds feeding on fruits, termites on tree bark, and pollinators on flower nectar.
The resources facilitating growth and efficient use of producers can influence the productivity of an ecosystem. Standing crop biomass is the total biomass produced at a particular location at a given time in an ecosystem and is an indicator of productivity, not a factor affecting productivity.
What determines the productivity of an ecosystem?
Net primary productivity in ecosystems is influenced by factors such as solar energy input, weather conditions, moisture levels, carbon dioxide levels, nutrient availability, and community interactions. These factors affect the efficiency of autotrophs in capturing light energy. Secondary productivity, influenced by heterotrophs, is energy accumulated at the consumer level, driven by the transfer of organic compounds between trophic levels through feeding.
This type of productivity is different from primary productivity as it constantly moves between organisms. Animals, fungi, and bacteria play a role in secondary productivity. Productivity is measured in units of mass per unit volume or surface per unit time.
What determines the productivity of a biome?
The high primary productivity observed in a biome is linked to the presence of abundant vegetation. This productivity is influenced by a number of factors, including the optimal temperature, the availability of nutrients, the amount of sunlight, and the quantity of water present. These factors distinguish this type of biome from those with lower or medium productivity.
What are the 4 factors affecting productivity?
Productivity is crucial for success in various aspects of life, including school, work, and personal life. It relies on four main factors: the right tools, physical health, workload optimization, and a productive environment. Luxafor, a leading productivity gadget company, offers a range of tools designed to enhance focus, improve communication, and streamline workflows in both personal and professional settings. Despite the challenges, productivity can be restored through various reasons, making it an essential aspect of success. Ultimately, nothing is impossible in terms of productivity.
What are the 4 factors of productivity?
Factors of production are essential resources that form the foundation of the economy, used by people to produce goods and services. These factors are divided into four categories: land, labor, capital, and entrepreneurship. Land resources, such as water, oil, copper, natural gas, coal, and forests, are the raw materials used in the production process. They can be renewable or nonrenewable. The income earned in return for land resources is called rent.
Labor resources, on the other hand, refer to the effort people contribute to the production of goods and services. Examples of labor resources include waiters, engineers, artists, and pilots. The income earned by labor resources is called wages, and it is the largest source of income for most people. In summary, factors of production are crucial for the economy’s functioning and contribute to the overall economy.
What determines productivity?
Productivity can be defined as the efficiency with which a given production process is carried out, as measured by the output-input ratio. This ratio represents the output produced per unit of a specific input and is typically expressed as a ratio.
What are the 4 essential components of productivity?
Productivity is a crucial skill that involves planning, focusing, choosing important tasks, and maintaining consistency. It can be measured individually or in the workplace, where output is measured by customer acquisition, phone calls, and sales. The four essential components of productivity include strategy, focus, productive choosing, and consistency. The goal of a company is to maximize productivity without compromising product quality and efficiency with resources. In the workplace, productivity can be measured by customers acquired, phone calls made, and sales closed.
How to measure the productivity of an ecosystem?
The correct answer is B, Biomass, as ecosystems consume resources and generate biomass as a consequence. The measurement of biomass within a given area serves to quantify the productivity of the ecosystem in question. Plants in an ecosystem require energy for a number of essential processes, including growth and the addition of tissue, which together generate biomass.
What are the top 3 most productive ecosystems?
The world’s ecosystems exhibit significant productivity, with estuaries, swamps, marshes, tropical rain forests, and temperate rain forests being the most productive systems. For a man to sustain himself, 300 trout require 90, 000 frogs, which in turn require 27 million grasshoppers that live off 1, 000 tons of grass. This lesson aims to answer the question of why big fierce animals are rare and explore other questions related to ecosystem productivity.
Which best determines the productivity of an ecosystem?
The rate of photosynthesis, which converts solar energy into organic matter, is the primary determinant of ecosystem productivity. This is because it is the building block of the food web.
What is the key to an ecosystem having more productivity?
The productivity of terrestrial ecosystems is enhanced by increasing moisture availability, which is influenced by a number of factors, including the number of photosynthesizers, nutrient availability, and temperature.
📹 Energy Flow in Ecosystems
An explanation of gross primary productivity and net primary productivity are included. Energy and biomass in ecological …
I cannot believe high school students study this! I never did. Nothing even close to it in HS. Everything was general. Now as an adult I’m like WT?! and my teens are like, yeah duh – we learned this. You’re generation is going to do so much for our environment. This is so important in understanding our anthropological affects on the environment. You will be the generation that heals our planet! 💕🤗 Very helpful! I want to be able explain this as clearly as you did one day. I appreciate your articles! Thank you so much.
A real quick thing I want to add, the energy pyramid. There is a role of the 2nd law of thermodynamics, “energy does not diminish, but the ability to use it does.” Something like that, that’s why you see only 10% of the energy being passed down, due to respiration taking most of it and keep in mind of that law.
Paul, can you imagine a way we could industrialize these processes; chemosythesis and/or photosynthesis? If we could take our own waste carbon dioxide and use it to produce sugars, would that be a cost effective way to save on production time such that it might entice corporations to get into the business? It would free up a lot of land that we could use for other things, like sanctuaries, preserves, mining or just to reduce the cost of living so that people could distribute themselves more evenly around the globe and not be so isolated to ports where our other waste products may harm things like aquatic biomes such as coral reefs. I’ve been thinking about this for a long time, but in terms of production in space and on other worlds, but the benefits would really help here on Earth, especially with the big panic over CO2 production over the last 20 years or so. I was thinking on places like Mars and Venus, after reading The Case for Mars by Robert Zubrin. He discussed the Sabatier reaction, CO2 + 4 H2 → CH4 + 2 H2O + energy, but if we could convert that CO2 into C6H12O6, we’d have fuel for life forms as well. On Venus maybe if we could use the SO2 in the atmosphere the way H2S is used in chemosynthesis, we could get the ball rolling for life there. Lots to think about.
2:30 This one took me a good minute to sort out for myself even though it took you only 7 seconds to say it. “Misconception”? I think you mean “Something not often known.” You use that word but immediately go on to explain the right idea, which is exclusively the opposite of a misconception. You might understand my confusion? As a listener, when I hear a setup like “One misconception is,” I expect the misconception to be stated, and a correction to be stated. It’s subconscious. Maybe I’m nitpicking, but this has the potential to be a problem. The change in subject came as a surprise. I felt like I was left with a cliffhanger, so my attention was adrift as the lecture continued. Many listeners may smooth over their critical thinking when they hear something that dissonant. I mean that they may just make an arbitrary decision on the fly as to what you meant without stopping to think so they won’t miss anything. I wonder if a significant fraction of listeners will remember plants as NOT doing cell respiration since that’s what anticipation would first determine. Thanks for following up with the clarifying sentence at 2:33 or I would have been misinformed rather than momentarily confused.