Estuaries: freshwater in-flows 2020. Voice / story / scientific data: Ellery Johnson. Music: Eric Avery. Video: Lisa Roberts

Estuaries

Australian freshwater ecologist Ellery Johnson draws in sand to give depths of meaning to his PhD research story:

"Estuaries depend on freshwater in-flows to regulate them equally. Their health is not just dictated by their internal water quality, but also their connection to the surrounding catchment. As freshwater in-flows transport resources to estuaries, preventing them may have ecological consequence. With the transport of organic matter and nutrients downstream by in-flows, algal and microbial growth is stimulated. A key organism in transporting these food web resources through the food web are these zooplankton called copepods. I have found that in an unregulated estuary with natural flows, seasonal temperature, algal growth, and adult copepod populations are all correlated. However, in a disrupted system with reduced flow, I found that seasonal temperature, algal growth and adult copepod populations did not correlate. While the mechanisms driving these differences are not fully known, freshwater in-flows seem to be key to the ecological health of estuaries."

 


2021
Land management
Water story

2021
Re-orienting
Aspirations

2021
Plant Animal
Relationships

2021
Re-connecting
through Cultural arts

2020
Estuaries
Freshwater in-flows

2020
Ocean Dance Poem
Global ocean flows

2020
Spiral into time
Ancient memory

2020
Global sea ice melting
Poles heating
2019
Ocean Health
Antarctic krill

2019
Connectivity
Love and Money
2017
Icebreaker
Science underpins spiritual connection
2017
Wake up
Despierta!!!
2008
Antarctic Albatross
Spiralling wind and ocean

 

Mind Map