Introduction Flashcards

First lecture of Light Climate

1
Q

What is RESICE

A

Autonomous vehicle to measure key environmental variables, phyto and zooplankton production, biomass and biodiversity

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2
Q

What does CTD detect

A

Temperature, salinity, depths and Chla

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3
Q

What does the EcoTriplet detect

A

Chl a, cDOM, TSM

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4
Q

What does the FRRf detect

A

Photosynthetic parameters, irradiance and Chl a

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5
Q

What does the Arctic ABCD Light observatory detect

A

1 hour measurments of 180 degree sky image, light intensity (white, R, G, B), Spectral irradiance, polar night irradiance measurements

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6
Q

What is are characteristics for the top layer in the ocean

A

NPQ, expression of photoprotection genes, high rETR, low alpha, increase PET chain, ROS managment, ROS production, high light

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7
Q

What are characteristics for deeper waters

A

Decreased photoprotection genes, decreased PET chain rate, decreased ROS production, low light, more LHCF and LHP, low rETR, high alpha

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8
Q

What are the three intervals of twilight

A
Civil twilight (0 to 6 degrees under horizon)
Nautical twilight (between 6 and 12 degrees)
Astronomical twilight (between 6 and 12 degrees)
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9
Q

What is a typical food web in Svalbard

A

Virus-bacteria-phytoplankton-ciliates-copepods

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10
Q

Name 4 ice algea species

A

Nitzschia frigida
Polarella glacialis
Phaeocystis glacialis
Navicula

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11
Q

Name 4 macroalgae found around Svalbard waters

A

Fucus distichus
Laminaria solidungula
Sacchoriza dermatodea
Alaria esculenta

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12
Q

Name some red calcarous algal seascape characteristics

A

Species such as anemones, sea urchins, brittle starts, function in photosynthesis, depths of 50 -60 m

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13
Q

How can we use taxonomy for kelp forest eco physiology

A

Use morphology, genetics, molecular tools, chemotaxonomy (pigments, proteins, element analysis) to identify map and monitor kelp forest conservation

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14
Q

What are characteristics of kelp forests

A

Missing zoning pattern, competition for light, nutrients, place to attach, light limitation between 5 to 30 meters

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15
Q

Why is there no zonation in Svalbard waters

A

Light regime, nutrient, substrate, epigrowth, sedimentation, ice scouring and grazers

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16
Q

Can algae grow in the polar night

A

Yes, brown, green and red macroalgae can perform PS during polar night (moon etc)