In ecology, rarefaction is a technique to assess species richness from the results of sampling. Rarefaction allows the calculation of species richness for a given number of individual samples, based on the construction of so-called rarefaction curves. This curve is a plot of the number of species as a function of the number of samples. Rarefaction curves generally grow rapidly at first, as the most common species are found, but the curves plateau as only the rarest species remain to be sampled. The issue that occurs when sampling various species in a community is that the larger the number of individuals sampled, the more species that will be found. Rarefaction curves are created by randomly re-sampling the pool of N samples multiple times and then plotting the average number of species found in each sample (1,2, ... N). "Thus rarefaction generates the expected number of species in a small collection of n individuals (or n samples) drawn at random from the large pool of N samples.". (Wikipedia).
Differences Between Natural & Artificial Ecosystems | Ecology & Environment | Biology | FuseSchool
An ecosystem can be defined as a large, highly interconnected area of the planet that is composed of several different biotic and abiotic components. A good example of an ecosystem would be an entire forest or mountain range. A natural ecosystem is made of all the plants, animals, and en
From playlist BIOLOGY: Ecology & Environment
What Is Urban Ecology? | Ecology & Environment | Biology | FuseSchool
Ecology is the relations of organisms with one another, and with their physical surroundings (the planet). As such, ecology is very broad in scope and encompasses an incredible variety of research questions. Research in ecology encompasses everything from the effects of weather patterns
From playlist BIOLOGY: Ecology & Environment
Key Ecology Terms | Ecology and Environment | Biology | FuseSchool
In this video we look at a few keys words that you will come across throughout ecology. An ecosystem is made up of all of the communities that live in it, every single organism from small to big and lots of environmental factors like sunlight and shade in the woodland, streams and other
From playlist BIOLOGY: Ecology & Environment
Why Is Blue So Rare In Nature?
Duh, except for the sky… and the ocean… Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. And th
From playlist Be Smart - LATEST EPISODES!
What Is A Species? | Evolution | Biology | FuseSchool
Carl Linnaeus classified all living things into groups based upon their physical features. His system placed organisms with the most similar characteristics together in a group he called the “species”. A species is defined as all organisms that are able to breed with one another, and mos
From playlist BIOLOGY: Evolution
What Are Interspecific & Intraspecific Interactions | Ecology & Environment | Biology | FuseSchool
What Are Interspecific & Intraspecific Interactions | Ecology & Environment | Biology | FuseSchool From this video you should know the difference between interspecific and intraspecific, and that interactions can be positive, negative or neutral. Interspecific interactions are between d
From playlist BIOLOGY: Ecology & Environment
Waves - properties: GCSE revision
GCSE level Waves covering: Waves, sine wave, reflection, transverse wave, longitudinal wave, wavelength, frequency, period, amplitude, peak, trough, crest, vibrations, compressions, rarefactions, speed, object, image, ray, incident ray, reflected ray, hertz, hz, wave equation, seismic wave
From playlist GCSE Physics Revision
5 Basic Connections Between Physics and Music | What the Stuff?!
Human beings can intuitively recognize the physics of music. Check out these basic connections between music and physics that explain what we’re hearing! 10 Connections Between Physics and Music http://entertainment.howstuffworks.com/10-connections-physics-music.htm Video Attribution: G
From playlist Our 5 Senses
Propagation of Sound | Don't Memorise
How does sound really travel through a medium? What happens to the particles of the medium? Let us find out in this video! ✅To access all videos Sound, enroll in our full course now: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM&utm_content=W
From playlist Physics
Axel Saenz: The Speed of a Second Class Particle in the ASEP
In this talk, we discuss the application of the Yang-Baxter equation for the quantum affine lie algebra $U_{q} \left (\widehat{ {\mathfrak{sl}}_{n+1}} \right )$ to interacting particle systems. The asymmetric simple exclusion process (ASEP) is a continuous-time Markov process of interacti
From playlist Probability and Statistics
Community Ecology: Feel the Love - Crash Course Ecology #4
Interactions between species are what define ecological communities, and community ecology studies these interactions anywhere they take place. Although interspecies interactions are mostly competitive, competition is pretty dangerous, so a lot of interactions are actually about side-step
From playlist Ecology
Physics 20 Sound and Sound Waves (1 of 53) What is Sound?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the basics of sound waves and what sound is. Next video in this series can be seen at: https://youtu.be/BA4LwzIs9H0
From playlist MOST POPULAR VIDEOS
Helmholtz Resonator and other Maintained Oscillators
Dr. Andres Larraza demonstrates a number of maintained oscillators mind-blowing physics demonstrations including the Helmholtz resonator, the escape mechanism (How a grandfather clock works), coupled oscillators (phase-locked oscillators), Franklins Chimes, a maintained oscillator circuit
From playlist Physics Demonstrations
How the little guy can compete against the big guy
How microbreweries are like shrubs and ferns. LEARN MORE ************** To learn more about this topic, start your googling with these keywords: - Ecological niche: is the match of a species to a specific environmental condition. - Niche differentiation: refers to the process by which co
From playlist Society, Culture & Technology
Understanding Longitudinal and Transverse Waves, Wavelength, and Period using Graphs
Four #MechanicalWaves #Graphs are introduced and used to understand and demonstrate #TransverseWaves, #LongitudinalWaves, #Wavelength, and #Period. Want Lecture Notes? https://www.flippingphysics.com/wave-graphs.html This is an AP Physics 1 Topic. 0:00 Intro 0:06 The four mechanical wave
From playlist IB Physics 4.2: Traveling Waves
Principles of Evolution, Ecology and Behavior (EEB 122) Speciation is the process through which species diverge from each other and/or from a common ancestor. There are several definitions of species, most of which focus on reproductive isolation and/or phylogenetic similarities. This c
From playlist Evolution, Ecology and Behavior with Stephen C. Stearns
CDIS 4017 - Terminology Part 1 (DONE)
Chaya Guntupalli (Nanjundeswaran) Ph.D. CDIS 4017 - Speech and Hearing Science I ETSU Online Programs - http://www.etsu.edu/online
From playlist ETSU: CDIS 4017 - Speech and Hearing Science I | CosmoLearning Audiology
Sound & Ultrasound: GCSE revision
GCSE level covering: ultrasound, longitudinal waves, compression, rarefaction, velocity, frequency, wavelength, middle C, hertz, kilohertz, megahertz, gigahertz, media, kidney stones, prenatal scans, oscilloscope, SONAR, depth
From playlist GCSE Physics Revision
What Is Biodiversity? | Ecology & Environment | Biology | FuseSchool
What Is Biodiversity? | Ecology & Environment | Biology | FuseSchool Biodiversity is a key concept in ecology and has importance on both local and global scales. Biodiversity is the degree of variation of life, or, put more simply, the number of different individuals and lifeforms in an a
From playlist BIOLOGY: Ecology & Environment
Teach Astronomy - Transverse and Longitudinal Waves
http://www.teachastronomy.com/ Light and other forms of electromagnetic radiation are transverse waves. This means that the oscillations of the electric and magnetic fields takes place perpendicular to the direction of motion of the wave energy. A familiar example of a transverse wave is
From playlist 05. Quantum Theory and Radiation