science

Podicipedini

Podicipedini 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 Podicipedini rather than just read about it. In short: Podicipedini is a tribe of waterbirds belonging to the family Podicipedidae containing the genera Aechmophorus and Podiceps. Members of this tribe of grebes are characterized based on the presence of nuptial plumes and downy young with a bare crown patch.

Key takeaways

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

Reference excerpt

Podicipedini is a tribe of waterbirds belonging to the family Podicipedidae containing the genera Aechmophorus and Podiceps. Members of this tribe of grebes are characterized based on the presence of nuptial plumes and downy young with a bare crown patch. They are more specialized for diving though the anatomy that enables them to do so makes them weaker to stand upright. Further they have much complex mating dance rituals. Based on these characteristics, other possible genera in the clade include Poliocephalus and Rollandia. Indeed, a molecular phylogeny by Ogawa et al. (2015) using genetic data from 3 mitochondrial markers found Podiceps to be paraphyletic in respect to Rollandia, as the latter genus is more closely related to several New World species of the former genus. The inclusion of the Neogene genera of Pliolymbus and Thiornis is based on their possible reclassification as junior synonyms as Podiceps. However, there is uncertainty as different positions has been found for some members. One morphological study from Fjeldså (2004) found Rollandia to be the basalmost extant genus of grebe, with Thiornis being classified as a stem-grebe. Another morphological study from Ksepka et al. (2013) found Podilymbus to be the sister genus to Rollandia, both more closer to Aechmophorus and Podiceps, while Poliocephalus and Thiornis to be closer to Tachybaptus.

References

Illustrations

Worked examples

Example 1 — a first encounter with Podicipedini

Start with the simplest possible case. Write down what Podicipedini 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 Podicipedini 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 Podicipedini 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 Podicipedini

In research: Podicipedini 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 Podicipedini 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: Podicipedini is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bird tribes, Podicipediformes, so understanding it makes those chapters shorter.
In everyday life: Look for Podicipedini 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 Podicipedini in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Podicipedini 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 Podicipedini out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Podicipedini in simple terms?

Why does Podicipedini 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 Podicipedini?

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 Podicipedini.