[MARMAM] New publication: Dredging activity in a highly urbanised estuary did not affect the long-term occurrence of Indo-Pacific bottlenose dolphins and long-nosed fur seals

Katharina Peters K.Peters at massey.ac.nz
Tue Oct 18 20:18:03 PDT 2022


Kia ora MARMAM community,

My colleagues and I are very happy to share the publication of our new paper:

‘Dredging activity in a highly urbanised estuary did not affect the long-term occurrence of Indo-Pacific bottlenose dolphins and long-nosed fur seals’ in Marine Pollution Bulletin.

Citation: M. I. Bossley, A. Steiner, G. J. Parra, F. Saltré and K. J. Peters (2022). Dredging activity in a highly urbanized estuary did not affect the long-term occurrence of Indo-Pacific bottlenose dolphins and long-nosed fur seals. Marine Pollution Bulletin 114183

Abstract: Dredging is an excavation activity used worldwide in marine and freshwater environments to create, deepen, and maintain waterways, harbours, channels, locks, docks, berths, river entrances, and approaches to ports and boat ramps. However, dredging impacts on marine life, including marine mammals (cetaceans, pinnipeds, and sirenians), remain largely unknown. Here we quantified the effect of dredging operations in 2005 and 2019 on the occurrence of Indo-Pacific bottlenose dolphins (Tursiops aduncus) and long-nosed fur seals (Arctocephalus forsteri) in the Port River estuary, a highly urbanized estuary in Adelaide, South Australia. We applied generalised linear models to two long-term sighting datasets (dolphins: 1992–2020, fur seals: 2010–2020), to analyse changes in sighting rates as a function of dredging operations, season, rainfall, and sea surface temperature. We showed that the fluctuations in both dolphin and fur seal occurrences were not correlated with dredging operations, whereas sea surface temperature and season were stronger predictors of both species sighting rates (with seals more prevalent during the colder months, and dolphins in summer). Given the highly industrial environment of the Port River estuary, it is possible that animals in this area are habituated to high noise levels and therefore were not disturbed by dredging operations. Future research would benefit from analysing short-term effects of dredging operations on behaviour, movement patterns and habitat use to determine effects of possible habitat alteration caused by dredging.

Available open-access at https://www.sciencedirect.com/science/article/pii/S0025326X22008657

Ngā mihi,
Katharina


Katharina J. Peters, PhD
Postdoctoral Researcher
Te Kura Aronukurangi | School of Earth and Environment
Te Whare Wānanga o Waitaha | University of Canterbury
Ōtautahi, Aotearoa | Christchurch, NZ

[A picture containing shape  Description automatically generated]<https://www.aim.uzh.ch/de/members/researchersandpostdocs/katharinapeters.html>[A picture containing drawing  Description automatically generated]<https://www.researchgate.net/profile/Katharina_Peters>[A close up of a logo  Description automatically generated]<https://twitter.com/kjopeters>[A picture containing drawing  Description automatically generated]<https://scholar.google.com.au/citations?hl=en&pli=1&user=7QWvsMUAAAAJ>[A picture containing drawing  Description automatically generated]<https://katharinajpeters.weebly.com/>[A picture containing object, kit, drawing  Description automatically generated]<https://www.facebook.com/CetaceanEcologyOrg>[A picture containing drawing  Description automatically generated]<https://www.linkedin.com/in/katharina-j-peters-b47b5370/>[A picture containing game, table  Description automatically generated]<https://www.cetaceanecology.org/dr-katharina-j-peters>[A picture containing drawing  Description automatically generated]<https://www.instagram.com/katharina.j.peters/>


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 26877 bytes
Desc: image001.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0009.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.png
Type: image/png
Size: 5629 bytes
Desc: image002.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0010.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.png
Type: image/png
Size: 4896 bytes
Desc: image003.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0011.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 7800 bytes
Desc: image004.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0012.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.png
Type: image/png
Size: 11149 bytes
Desc: image005.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0013.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image006.png
Type: image/png
Size: 6703 bytes
Desc: image006.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0014.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image007.png
Type: image/png
Size: 4793 bytes
Desc: image007.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0015.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image008.png
Type: image/png
Size: 13560 bytes
Desc: image008.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0016.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image009.png
Type: image/png
Size: 15449 bytes
Desc: image009.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20221019/1fca1c39/attachment-0017.png>


More information about the MARMAM mailing list