science

Richard Kolkwitz

Richard Kolkwitz is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Richard Kolkwitz rather than just read about it. In short: Richard Kolkwitz (March 23, 1873 – April 16, 1956) was a German botanist who was a native of Berlin. He studied natural sciences at the University of Berlin under Adolf Engler (1844–1930) and Simon Schwendener (1829–1919), and from 1895 to 1900 was an assistant at the university under Leopold Kny (1841–1916).

Key takeaways

Richard Kolkwitz belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Richard Kolkwitz to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Richard Kolkwitz from memory before moving on to harder problems.

Reference excerpt

Richard Kolkwitz (March 23, 1873 – April 16, 1956) was a German botanist who was a native of Berlin. He studied natural sciences at the University of Berlin under Adolf Engler (1844–1930) and Simon Schwendener (1829–1919), and from 1895 to 1900 was an assistant at the university under Leopold Kny (1841–1916). Afterwards, he became a professor of botany in Berlin, and from 1901 until 1938 was also in charge of the Biological Prussian Experimental and Testing Institute for water supply and sewage disposal. In 1954 he became a professor of botany at the Free University of Berlin.

Saprobic Studies Kolkwitz is known for work with Maximilian Marsson (1845–1909) in the development of the "saprobic system" as a biological determination of water quality and levels of organic waste (pollution) in rivers and streams. Their methodology was a non-chemical analysis that was based on patterns of abundance and distribution of various biological species. They examined the biological patterns of approximately 800 species of water plants and invertebrates in their studies, and produced a saprobic index of four zones defining levels of water quality. The term "polysaprobic" was used for river environments with a large amount of decaying organic matter; "oligosaprobic" described locations with the least amount of organic waste, while alpha- and beta-"mesosaprobic" defined moderately polluted habitats. Later, this index was expanded into nine zones, with "xenosaprobic" being the least polluted and poly-saprobic" having the highest level of waste.

Eponyms The genus Kolkwitzia is named after Kolkwitz. It contains one species, Kolkwitzia amabilis, which is commonly known as a "beauty bush". Also a device known in Germany as a Kolkwitzkammer is named after him, which is an instrument used to determine the quantity of cells and cell aggregates of phytoplankton.

References

This article is based on a translation of an article from the German Wikipedia. Water Pollution: Causes, Effects and Control by P K Goel

Worked examples

Example 1 — a first encounter with Richard Kolkwitz

Start with the simplest possible case. Write down what Richard Kolkwitz claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Richard Kolkwitz before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Richard Kolkwitz ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Richard Kolkwitz

In research: Richard Kolkwitz appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Richard Kolkwitz in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Richard Kolkwitz is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1873 births, 1956 deaths, 20th-century German botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Richard Kolkwitz outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Richard Kolkwitz in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Richard Kolkwitz means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Richard Kolkwitz out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Richard Kolkwitz in simple terms?

Why does Richard Kolkwitz matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Richard Kolkwitz?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Richard Kolkwitz.