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STANSW 2023 Workshop – Carbon uptake rates in four coastal lagoons, in relation to their catchment development – Dr Samantha Kneeshaw (Teacher)

On Demand

Eutrophication, the enrichment of water by nutrients, is causing an increase in primary production and impacting our coastal lagoons.


Comparing other continents it’s a relatively recent problem in Australia, nearly 50% of estuaries remaining classified as pristine. Patterns of settlement such as people choosing a sea-change and its effects on a once pristine systems, are now under pressure.

In this lecture research is linked for use in Extension Science, Earth and Environmental Science and the Biology curriculums.

Primary production monthly rates, chlorophyll-a concentrations, algae species composition, nutrient, light and water conditions taken from May 2001 – April 2003 in 4 east coastal lagoons of NSW. Primary production rate findings were similar to those in worldwide near pristine systems, the most impacted systems were similar to disturbed catchments.

High nutrient retention and low flushing rates was the most important factors determining the level of primary production and biomass in the systems. This is irrespective of entrance status and makes coastal lagoons highly sensitive to changes in nutrient loading.


BROUGHT TO YOU BY: Science Teachers Association of NSW Inc, DART Learning, NSW Department of Education


Dr Samantha Kneeshaw
Has been a High School Science Teacher since 2011, she lives in Conjola on the South Coast of NSW with her husband and two children, who are about to commence University in Melbourne. She completed a double degree in Marine Biology and Oceanography in 1997 in Bangor, North Wales and moved to Australia shortly afterwards. She started her first job as a Scientist in 1998 for UNSW and moved on to the Environmental Protection Authority. Her work for the organisation led to my PhD with Newcastle University, NSW from 2001-2008, which is the main focus of her talk today. She went on to work for Wollongong University in the generation of seaweed for the food markets. In 2010, UOW opened up a 1-year Diploma of Education (Secondary) Science. Samantha has always had teaching in the back on my mind and chose to live on the South Coast of NSW, career opportunities in Science were limited, so she leapt at the chance. Thanks to her varied double degree, she is qualified to teach Marine Biology, Biology, Chemistry, Physics and Earth and Environmental Science. Having worked in two South Coast schools, Shoalhaven High School and her current school, Ulladulla High School. She is currently the acting Head Teacher of Science. It has been the most rewarding, yet most knackering, career so far.

Event Details

Event Type

On Demand (available until: 31-Dec-2027 11:59PM)

Delivery Platform

Youtube Recording


1 Hour 13 Minutes




Primary, Secondary

Main KLA, Strand, Sub Strand

Science and Tech » Biology

Other KLAs

Professional Development

Science and Tech » Earth and Environmental Science

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Technology and Materials Requirements

Reliable internet
Device for viewing

More Information About This Event

This is one of many resources and PL offerings by STANSW.

Science Teachers Association of NSW exists to support the development of science teachers across the state, aspiring for excellence in science education. We do this through the provision of professional learning opportunities, including conferences, mentorships and professional learning communities.

STA events are open to all schools K-12 and across the school sectors.  Members enjoy discounted professional learning and member only benefits.  We invite you to peruse our event calendar and the many exciting in-person and online activities we have on offer.  See our event listing

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Science Teachers Association of NSW Inc
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Website: www.stansw.asn.au

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