Tag Archives: populations

C1 Species & Communities (SL & HL)

C.1 species and community from Bob Smullen

Bio C1 Species & Communities in 5 minutes from roxprice:

Mr Andersen explains the niche in 5 minutes:

Community Ecology: Feel the Love – Crash Course Ecology #4 with Hank Green:

Community Ecology II: Predators – Crash Course Ecology #5 also with Hank:

Sampling strategies (Scot. Environment, 6m 45s); Transect, Quadrats and Percentage Cover to investigate the Distribution of Clover (6m 40s); Plant Sampling Techniques (Botany Web Series, 3m); and Quadrat Sampling (2016) IB Biology from Mr Alex Lee.

This is a fantastic 5m video demonstrating KEYSTONE SPECIES: how wolves change rivers.

C5 Population Ecology (HL only)

C.5 population.pptx from Bob Smullen

Option C.5 Estimating Population in 11m 28s from Megan Couser and Bio C.5 Population Ecology in 5 minutes from roxprice:

Population Ecology: The Texas Mosquito Mystery – Crash Course Ecology #2 from Hank Green:


An excellent 8m video on the effects of overfishing: What happened to the Grand Banks cod?

State of the Planet’s Oceans: Decimation of the Atlantic Cod Fishery (4m 12s)

EMPTY OCEANS: Is The World Running Out Of Fish? (17m)

Jeremy Jackson: How we wrecked the ocean (a TED talk in 18m)

No Fish Left Uncounted – Full Episode (27m)

Sustainable Use of Marine Resources (2m 21s)


Hans Rosling: global population growth, box by box in a 10m vid; human population growth: Crash Course Ecology #3 in 10m.

Number of humans on the planet today? – see worldometer.

4.1 Species, Communities & Ecosystems

4-1 Species Comms Ecos notes to complete (created by Mrs Green).

A 9m video lesson on this sub-topic from Dan Rott videos:

In Crash Course Biology #40 – Ecology: Rules for Living on Earth, Hank introduces us to ecology.


Thank you Mr Andersen. And here is a worked Chi-squared example in 9m 30s.

The Chi-Squared Test from Stephen Taylor. And thank you Mr Taylor.

Key terms as flashcards from Quizlet (you also can test yourself in a number of ways):


Setting up sealed mesocosms to try to establish sustainability

Mesocosms – notes from BioNinja