Ecological consequences of sea ice decline Flashcards
Post et al., 2013
Impact of primary producers
Primary producers underpin the entire foodweb of Arctic
Disruption of the seasonality of the ice algal and phytoplankton blooms by ice thinning, accelerated melt timing which created mismatches for the timing of zooplankton production, with consequences for higher consumers
Post et al., 2013
What are some indirect effects of sea ice loss?
Influence ecological dynamics
indirectly through effects on movement, population mixing, and pathogen transmission.
Genetic isolation.
Changes in animal behaviour = alter patterns of pathogen behaviour.
What is the cryosphere?
NOAA (n.d)
The cryosphere is the frozen water part of the Earth system
Elevated temperatures cause…
Moline et al., 2004
Elevated temperatures along the Peninsula will increase the extent of coastal melt‐water zones causing a change from diatoms to cryptophytes (less eatable for krill)
What is a key part of the artic food web?
Darnis et al, 2012
Polar cod- Juvenile Polar cod are indirectly but heavily dependent on ice algae. Strong link between polar cod and sea ice of the Arctic Ocean
Difference between Antarctic and Arctic
NSIDC (n.d.)
Antarctica:
Land mass surrounded by ocean- can move freely = high drift speeds, tends to be covered in snow.
Arctic:
Semi-enclosed ocean almost completely surrounded by land, low snowfall
All the readings
Post et al., 2013
NOAA (n.d)
Moline et al., 2004
Darnis et al, 2012
NSIDC (n.d.)
Primary producers underpin the entire foodweb of Arctic
Disruption of the seasonality of the ice algal and phytoplankton blooms by ice thinning, accelerated melt timing which created mismatches for the timing of zooplankton production, with consequences for higher consumers
Post et al., 2013
Impact of primary producers
Influence ecological dynamics
indirectly through effects on movement, population mixing, and pathogen transmission.
Genetic isolation.
Changes in animal behaviour = alter patterns of pathogen behaviour.
Post et al., 2013
What are some indirect effects of sea ice loss?
The cryosphere is the frozen water part of the Earth system
What is the cryosphere?
NOAA (n.d)
Elevated temperatures along the Peninsula will increase the extent of coastal melt‐water zones causing a change from diatoms to cryptophytes (less eatable for krill)
Elevated temperatures cause…
Moline et al., 2004
Polar cod- Juvenile Polar cod are indirectly but heavily dependent on ice algae. Strong link between polar cod and sea ice of the Arctic Ocean
What is a key part of the artic food web?
Darnis et al, 2012
Antarctica:
Land mass surrounded by ocean- can move freely = high drift speeds, tends to be covered in snow.
Arctic:
Semi-enclosed ocean almost completely surrounded by land, low snowfall
Difference between Antarctic and Arctic
NSIDC (n.d.)
