biology

Julie LaRoche

Julie LaRoche is a biology 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 Julie LaRoche rather than just read about it. In short: Julie LaRoche is a Canadian marine biologist. She is a Tier 1 Canada Research Chair in Marine Microbial Genomics and Biogeochemistry at Dalhousie University.

Key takeaways

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

Reference excerpt

Julie LaRoche is a Canadian marine biologist. She is a Tier 1 Canada Research Chair in Marine Microbial Genomics and Biogeochemistry at Dalhousie University.

Early life and education LaRoche was born in Quebec, Canada. She earned her Bachelor of Science from McGill University and her PhD in Biological Oceanography at Dalhousie University. While earning her PhD at Dalhouse, she met her future husband Douglas Wallace.

Career After completing her postdoctoral studies at Dalhousie University, LaRoche conducted research at the Brookhaven National Laboratory (BNL). While there, LaRoche co-published “Flavodoxin expression as an indicator of iron limitation in marine diatoms" with Helen Murray-Tobin which earned them the Luigi Provasoli Award from the Phycological Society of America for the most outstanding research paper published in the Journal of Phycology. She also studied how stress affects phytoplankton. In 1998, LaRoche accepted a position at the University of Kiel as a professor in their Institute of Oceanography. LaRoche and her husband stayed in Germany until 2010 when they both accepted placements at their alma mater, Dalhousie. LaRoche was appointed a Tier 1 Canada Research Chair in Marine Microbial Genomics and Biogeochemistry, and her husband was appointed the University's Canada Excellence Research Chair. Upon her return, she developed a lab to research how global climate change is affecting marine microbes and biochemical processes. She specifically studied how phytoplankton and marine bacteria are affected by increases in temperature and decreases in pH. In 2016, she received $149,900 in funding for her plankton research project, which allowed her to purchase a holographic microscope for a commercial ship she uses to study the Deep Panuke drilling station. Previously, her team had only been able to analyze sample of water twice a year until The Atlantic Canadian company voluntarily provided the lab with free access on the Atlantic Condor. The next year, she partnered with Canada C3, a 150-day expedition along the Atlantic, Arctic and Pacific coasts, to collect and share data. In 2019, LaRoche was renewed as a Canada Research Chair. To date, LaRoche has published over 170 academic publications, which have been cited over 30,000 times, resulting in an h-index of 70.

Selected publications A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization. Philip W Boyd, Andrew J Watson, Cliff S Law, Edward R Abraham, Thomas Trull, Rob Murdoch, Dorothee CE Bakker, Andrew R Bowie, KO Buesseler, Hoe Chang, Matthew Charette, Peter Croot, Ken Downing, Russell Frew, Mark Gall, Mark Hadfield, Julie Hall, Mike Harvey, Greg Jameson, Julie LaRoche, Malcolm Liddicoat, Roger Ling, Maria T Maldonado, R Michael McKay, Scott Nodder, Stu Pickmere, Rick Pridmore, Steve Rintoul, Karl Safi, Philip Sutton, Robert Strzepek, Kim Tanneberger, Suzanne Turner, Anya Waite, John Zeldis. Nature. 2000. Redfield revisited: variability of C [ratio] N [ratio] P in marine microalgae and its biochemical basis. Richard J Geider and Julie La Roche. 2002/2. European Journal of Phycology. Global iron connections between desert dust, ocean biogeochemistry, and climate. TD Jickells, ZS An, Katrine K Andersen, AR Baker, G Bergametti, Nick Brooks, JJ Cao, PW Boyd, RA Duce, KA Hunter, H Kawahata, N l Kubilay, J laRoche, PS Liss, N Mahowald, JM Prospero, AJ Ridgwell, I and Tegen, R Torres. Science. 2005. Processes and patterns of oceanic nutrient limitation. CM Moore, MM Mills, KR Arrigo, I Berman-Frank, L Bopp, PW Boyd, ED Galbraith, RJ Geider, C Guieu, SL Jaccard, TD Jickells, Julie La Roche, TM Lenton, NM Mahowald, E Marañón, I Marinov, JK Moore, T Nakatsuka, Andreas Oschlies, MA Saito, TF Thingstad, A Tsuda, and O Ulloa. Nature Geoscience. 2013. A communal catalogue reveals Earth’s multiscale microbial diversity. Nature. 2017.

References

External links Julie LaRoche publications indexed by Google Scholar CRC profile

Worked examples

Example 1 — a first encounter with Julie LaRoche

Start with the simplest possible case. Write down what Julie LaRoche claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Julie LaRoche 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 Julie LaRoche 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 Julie LaRoche

In research: Julie LaRoche appears in biology 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 Julie LaRoche 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: Julie LaRoche is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1957 births, 20th-century Canadian biologists, 20th-century Canadian women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Julie LaRoche 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 Julie LaRoche in 20 minutes

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

Frequently asked questions

What is Julie LaRoche in simple terms?

Julie LaRoche is a Canadian marine biologist. She is a Tier 1 Canada Research Chair in Marine Microbial Genomics and Biogeochemistry at Dalhousie University.

Why does Julie LaRoche matter?

Because it connects several biology 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 Julie LaRoche?

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 Julie LaRoche.