http://researchonline.federation.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:19203 Wed 17 Apr 2024 10:16:13 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:13211 Wed 07 Apr 2021 14:01:23 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10765 Nodularia spumigena are a recurring problem in some estuaries; however, the historic occurrence of such blooms in unclear in many cases. Here we report the results of a palaeoecological study on a temperate Australian lagoon system (the Gippsland Lakes) where we used stable isotopes and pigment biomarkers in dated cores as proxies for eutrophication and blooms of cyanobacteria. Pigment proxies show a clear signal, with an increase in cyanobacterial pigments (echinenone, canthaxanthin and zeaxanthin) in the period coinciding with recent blooms. Another excursion in these proxies was observed prior to the opening of an artificial entrance to the lakes in 1889, which markedly increased the salinity of the Gippsland Lakes. A coincident increase in the sediment organic-carbon content in the period prior to the opening of the artificial entrance suggests that the bottom waters of the lakes were more stratified and hypoxic, which would have led to an increase in the recycling of phosphorus. After the opening of the artificial entrance, there was a ∼60-year period with low values for the cyanobacterial proxies as well as a low sediment organic-carbon content suggesting a period of low bloom activity associated with the increased salinity of the lakes. During the 1940s, the current period of re-eutrophication commenced, as indicated by a steadily increasing sediment organic-carbon content and cyanobacterial pigments. We suggest that increasing nitrogen inputs from the catchment led to the return of hypoxia and increased phosphorus release from the sediment, which drove the re-emergence of cyanobacterial blooms. © 2016 Author(s).]]> Wed 07 Apr 2021 13:56:07 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7667 Wed 07 Apr 2021 13:47:08 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7476 Wed 07 Apr 2021 13:46:55 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7034 Wed 07 Apr 2021 13:46:33 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:6426 Wed 07 Apr 2021 13:46:01 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5364 Wed 07 Apr 2021 13:45:00 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5330 Wed 07 Apr 2021 13:44:58 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5181 Wed 07 Apr 2021 13:44:49 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5161 Wed 07 Apr 2021 13:44:47 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:5160 Wed 07 Apr 2021 13:44:47 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4721 Wed 07 Apr 2021 13:44:15 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:4542 Wed 07 Apr 2021 13:44:01 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3934 Wed 07 Apr 2021 13:34:58 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:3800 Wed 07 Apr 2021 13:34:50 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:15281 Tue 21 Sep 2021 12:13:16 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18799 Tue 16 Jan 2024 14:59:35 AEDT ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:18791 Tue 16 Jan 2024 14:39:53 AEDT ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:7618 Mon 26 Jun 2023 15:15:19 AEST ]]>