New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Lecture 10

by: Lareb Notetaker

Lecture 10 BISC 2467

Lareb Notetaker
GPA 3.0

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Lecture 10 Notes with slides
Marine Biology
Edward Murdy
Study Guide
marine biology
50 ?




Popular in Marine Biology

Popular in Biology

This 3 page Study Guide was uploaded by Lareb Notetaker on Tuesday March 1, 2016. The Study Guide belongs to BISC 2467 at George Washington University taught by Edward Murdy in Spring 2016. Since its upload, it has received 27 views. For similar materials see Marine Biology in Biology at George Washington University.


Reviews for Lecture 10


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 03/01/16
10. Critical Factors in Plankton Abundance Planktons:tinymicroscopic organismscannotsee with naked eye. Notofmuch significancebut they’re extremelyimportant andwithoutphytoplankton there probablywouldbenolifeinoceanoronlandbecausephytoplanktonprovidemore than half of the earth’soxygen supply.Extremelyimportantto marine andterrestrial environment.Formbasesofmarinefoodchain allbecausephytoplanktonareableto captureenergyfromsun andutilizephotosynthesis. Distribution ofphytoplanktonispatchyandnotcontinuous.Thecausesare: Upwelling:bringsnutrientsfrom deepwatersto thesurface.Whereyou havenutrientsyouwillhavephytoplanktonconcentrationandwiththe presenceofphytoplanktonyouhavezooplankton. VerticalMixing:causedbywindmixingupthewater column Waters of different densities Grazing by zooplankton:amountofpredatorsyouhavewillinfluence population. Primary determined byturbulenceand population growth. Where you have low turbulence, the populationcan increase in size. With Phytoplankton can increase in size very quickly in one place. if you have highturbulence, phytoplankton will bedispersedandpopulationdensitywillnotincrease. ExofTurbulence:currents,wind,anythingthatcanmovethewater. Inordertohavephytoplanktonbloomyouneedtohaveconditionstohave photosynthesis. What is needed for photosynthesis: always will have CO2 & water, insufficient amountofsunlight& nutrients.Nutrientsthey needarenitrogen & phosphorous and fordiatomsyou need silicon aswell.Need silicon forthecellwall. When you have upwellingor mixing bythe wind,these nutrients are brought to the surface. Andthe verticalmixingcausedbythe win occursin the winter time when wehavestrongstormsin theocean.In spring(aboutthistime) in thewe haveavailabilityofnutrientscausedbyverticalmixingandmorehoursofsunlight When you have upwellingor mixing bythe wind,these nutrients are brought to the surface. Andthe verticalmixingcausedbythe win occursin the winter time when wehavestrongstormsin theocean.In spring(aboutthistime) in thewe haveavailabilityofnutrientscausedbyverticalmixingandmorehoursofsunlight warming thewater,allowing tohaveallnecessary conditionsforphytoplanktonto bloom. Spring Bloom:Simultaneouspresence ofrichnessof nutrientsin surface waters and increasein sunlightwarmingwater. Blue line representavailable sunlight,red line represents availablenutrients. The lightblue are phytoplanktonnumbers(inthiscase diatoms).Thisex.Isfor diatoms,Dinoflagellatesanddifferentphytoplanktonhavedifferentgraphs. Bloom lasts a couple of months,decreases due to predationbyzooplankton feedingonadditionphytoplankton.Zooplanktonnumbersincreaseduetosurplus in food, butphytoplankton and nutrientlevelsdecrease.The bloomendsand we gotthroughstasisperiodwherenotmuchishappened.Waterheatsupandweget thermocline, pichnocline situationwhere warmlessdense watersitson top of denserwaters.Aswegetintoautumn,surfacewaterscool,pichnoclineand thermocline disappearandgetbettermixingin waterandwe getanother much smaller bloom. Arctic:Very pronounced bellcurve,talland wide.Bloomlastslonger in Arcticthan in Temperate regiondueto more sunlightin the Arctic during thesummermonths. Thesunneversetsinsomepartsofthearctic.Lotsofavailablesunlightmeaning greateravailabilityforphotosynthesistotakeplace.Longlastingmajorbloombut nobloominthefall. Temperate:LargeSpringtimeBloom,increaseinZooplanktonNumber,Smaller Bloom in Fall. Tropics:Nobloomatall.Nomajorbloombecausesunlightisconsistentbut tropicalwatersare nutrientlimited. CrystalClearwater in Caribbeandueto little phytoplanktonandzooplankton,nutrientlimitedwaters. Nutrients:Phosphorous,Nitrogen,Silicone,Iron Themostimportantnutrientandmainelementlimitingphytoplanktongrowthis Nitrogen. Water absorbs andscatters certain wavelengths of light. Thelongerwavelengths in the light spectrum(Red, Orange, and Yellow)cannot penetratetoo deeply into Water absorbs andscatters certain wavelengths of light. Thelongerwavelengths in the lightspectrum(Red, Orange, and Yellow)cannotpenetratetoo deeply into the ocean. Can only getto maybe150meters. The shorterwavelengths(Blue, Green Violet) canpenetratealmostto thebottom oftheeuphoticzone.Bluelight penetratesthedeepestintheoceanmeaningitisabsorbedtheleastbywater hencewhytheoceanlooksbluetous.Ifyougetoutformthecoastandmiles fromtheshoreline,you'llseebluewaterduetofewerparticlesandthebluecolor is penetrating thelease. Clear watershave fewer particles. Coastal waters, it will look greeni-hrownish, not bluebecause they have too manyparticlesinthewaterthatscatterandabsorblightwavelengths. Photosyntheticorganismscontaina numberand varietyof differentpigments. Oneof thesepigmentsChlorophyllaisfoundin allland plantsandin all phytoplanktonorphotosyntheticorganismsofthesea.Capturesenergyfoundin red(longwavelength)andbluewavelengths(shortwavelengths).Useenergyto produceglucoseduringphotosynthesis.IfyoujusthaveChlorophylla,you're onlycapturingredandbluespectrumsbutalotarethere.Otherpigmentspresent to capture other lightspectrumsin addition toChlorophylla. Chlorophyllb, c, and d,andthingscalledaccessorypigmentshelpabsorbenergyovertheentirelight spectrum. Action Spectrum:Differentspecieshavedifferentaccessorypigmentsand differentspecieshavedifferentChlorophyll's. Accessory pigmentprovidedifferentabsorbed spectrum fromChlorophyll.Ex. Dinoflagellatesareknownto causeredtides,contain reddish/orangeaccessory pigmentcalledheredidinwhereasdiatoms(numerousgroupofphytoplankton) contain goldenbrownpigmentcalled pheukoxanthom.Accessorypigmentdiffer fromdifferentorganisms. Zooplanktonwillfeednearthesurfacenearthenighttimeandsinkindeeper watersduringtheday,primarilyto avoidpredators.Notonly doesthe zooplankton dothis,butotherorganismsaswell.Experimentshavebeen done to testthis, even if you take zooplanktonoutof theoceanandputthemin constantlightenvironmentthey'llcontinueto do thisverticalmigration, engravedin theirsystem. During thedaytime,they'reunderwater because the fishesthatfeed on them they're in thesurface and atnighttheycomeupto feedbutgoback downatdaytime.


Buy Material

Are you sure you want to buy this material for

50 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Janice Dongeun University of Washington

"I used the money I made selling my notes & study guides to pay for spring break in Olympia, Washington...which was Sweet!"

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.