Scientific art and illustrations

by Kristen Krumhardt

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Humpback whale

This figure shows potential changes to lower trophic levels in two regions of the Southern Ocean

Climate change may drive changes to Southern Ocean food webs

Featured in Frontiers in Marine Science article

Coccolithophore in blue.

An artistic take on coccolithophore calcification removing alkalinity from seawater.

Link to Eos article featuring this illustration

Bromeliad rainforest fantasy #3


This is a pteropod.

On the cover of Nature Climate Change



Discosphaera tubifera

Discosphaera tubifera

cocco map

where are the coccolithophores?

This map shows where the well-known species of coccolithophores live, overlaid on particulate inorganic carbon (PIC) measurements retrieved by the MODIS satellite.



fantasy #2

(unpublished oil painting)

Featured in Progress in Oceanography article



dungeness crab

Dungeness Crab


A centric diatom


Calcidiscus leptoporus

A cold water species of coccolithophore

Coccolithophore cross-section

A look inside the coccolithophore Emiliania huxleyi, showing a chloroplasts and coccolith vessicle, among other organelles


Future oceanic changes

(featured in my PhD thesis)




A zooplankton

Ocean views

watercolor postage stamp painting

pinnate diatom

Pennate diatom


Featured on the cover of Global Biogeochemical Cycles

Coccolithus pelagicus

(featured in one of my publications in Progress in Oceanography)

Bromeliad rainforest fantasy #1

(oil painting)


Fossil foraminifera

(used to reconstruct paleoclimate)


Bromeliad botanical

How would CO2 mitigation help slow warming impacts on net primary production in the ocean?

Regions where the blue dashed bars are more separate from the red ones are where cutting CO2 emissions would help climate change impacts on the production of marine algae. Regions where they overlap are places where climate change impacts are unavoidable.


Fairy ring mushroom

Morel mushroom

Changes in chlorophyll from the calcifying marine algae, coccolithophores, over the past 25 years at the Bermuda Atlantic Timeseries Study (BATS) region in the subtropical North Atlantic.

Featured in Global Biogeochemical Cycles article

Featured in Biogeosciences article

coccolithophore clean

Featured on the cover of Journal of Advances in Modeling Earth Systems


Emiliania huxleyi

North Pacific ecosystem


Historical deforestation in Europe

Featured in Quaternary Science Reviews article

The juvenile stage of the loggerhead sea turtle, known as the "lost years", is spent passively foraging in the open ocean.

Juvenile loggerhead sea turtle

Ehux oc
Ehux A
Ehux BC sm

Each morphotype of this coccolithophore species is adapted to a specific environment

Emiliania huxleyi morphotypes

"Crazy pineapple"

Antarctic ocean circulation

The particular ocean circulation patterns in the Southern Ocean allows the substances in sinking biogenic particles to be trapped.

Featured in Global Biogeochemical Cycles article

Phytoplankton thumbnails

Chaetoceros dichaeta

frag kerguel1
frag kerguel2

Fragilariopsis kerguelensis

Goceanica sm

Gephyrocapsa oceanica

Spulchra sm

Syracosphaera pulchra


Prochlorococcus marinus




Ceratium hirundinella

Ceratium tripos


Phaeocystis antarctica

coccoC 2regions depth time

Modeling carbon fertilization in marine algae

Published in Journal of Advances in Modeling the Earth System (JAMES)

These tiny pelagic snails are under threat from ocean acidification.


Swiss flower field

(large watercolor on fabric)

koala (no tree)
umbellosphaera irregularis

Umbellosphaera irregularis

Chemostat continuous culturing system

Published in Environmental Microbiology article


ART 05

Old bromeliad from herbarium

ACC phyto

Environmental controls on phytoplankton in the Antarctic Circumpolar Current


Juvenile loggerhead

sea turtle


Globigerina bulloides

Link to news article featuring this illustration