Myall Lakes – isotope dating of short term environmental changes in a coastal lake system - anthropogenic pressures causing blue- green algae outbreaks in a national park

Simple item page
dc.contributor.authorFlett, Ien_AU
dc.contributor.authorHeijnis, Hen_AU
dc.contributor.authorHarle, KJen_AU
dc.contributor.authorSkillbeck, Gen_AU
dc.date.accessioned2021-07-01T01:52:08Zen_AU
dc.date.available2021-07-01T01:52:08Zen_AU
dc.date.issued2004-10-25en_AU
dc.date.statistics2021-03-15en_AU
dc.description.abstractThe Myall Lakes system, 50 km North of Newcastle, Australia, is a barrier lake system covering 10000ha, and is brackish (ranging from Oligohaline to Mesohaline under the Venice System classification). The Myall Lakes system is far less disturbed than similar coastal lakes, and as an important migratory bird habitat, they are protected under the RAMSAR agreement. They are also fully encompassed by the Myall Lakes National Park, declared in 1972, and are important to the local tourism and fisheries industries. Only two small streams provide freshwater input therefore water-retention time is of concern, because any changes to nutrient regimes, or pollution in the catchment affecting the Lakes, may take a long time to be corrected. In recent summers a series of cyanobacteria blooms have occurred which may indicate that human activities such as agriculture and recreational boating and fishing are affecting the Myall Lakes. Four sediment cores, up to 95cm long, were collected and sub-sampled for trace elements, palynological assemblages, sediment grain size and organic/carbonate content. Lead-210 (210Pb) was used to determine sedimentation rates and construct a chronology. Fossilised algal remains, specifically the akinetes of cyanobacteria, were used to estimate previous algal populations in the lake system. This technique has the potential to be an important tool in not only historical environmental reconstruction but also in catchment management. Results indicate that there have been cyclical fluctuations in the populations of aquatic plants and algae throughout recent historyen_AU
dc.identifier.booktitleBook of extended synopsesen_AU
dc.identifier.citationFlett, I., Heijnis, H., Harle, K., & Skillbeck, G. (2004). Myall Lakes – isotope dating of short term environmental changes in a coastal lake system - anthropogenic pressures causing blue- green algae outbreaks in a national park. Paper presented to International Conference on Isotopes in Environmental Studies – Aquatic Forum 2004 Monte-Carlo, Monaco 25–29 October 2004. Book of extended synopses. Retrieved from https://inis.iaea.org/collection/NCLCollectionStore/_Public/36/003/36003223.pdf?r=1#page=5&zoom=auto,-15,800en_AU
dc.identifier.conferenceenddate29 October 2004en_AU
dc.identifier.conferencenameIsotopes in Environmental Studies Aquatic Forum 2004en_AU
dc.identifier.conferenceplaceMonacoen_AU
dc.identifier.conferencestartdate25 October 2004en_AU
dc.identifier.otherIAEA-CN-118en_AU
dc.identifier.placeofpublicationVienna, Austriaen_AU
dc.identifier.urihttps://inis.iaea.org/collection/NCLCollectionStore/_Public/36/003/36003223.pdf?r=1#page=5&zoom=auto,-15,800en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11021en_AU
dc.language.isoenen_AU
dc.publisherInternational Atomic Energy Agencyen_AU
dc.subjectNew South Walesen_AU
dc.subjectAustraliaen_AU
dc.subjectLakesen_AU
dc.subjectBirdsen_AU
dc.subjectHabitaten_AU
dc.subjectPublic landsen_AU
dc.subjectRecreational areasen_AU
dc.subjectAlgaeen_AU
dc.subjectCyanobacteriaen_AU
dc.titleMyall Lakes – isotope dating of short term environmental changes in a coastal lake system - anthropogenic pressures causing blue- green algae outbreaks in a national parken_AU
dc.typeConference Abstracten_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
cn151_FinalProgramme.pdf
Size:
211.99 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications