[MARMAM] Mysterious pits in the seabed caused by the activity of harbour porpoises?

2024-01-08 Thread Gilles, Anita
Dear MARMAM community,


mysterious pits in the seabed of the North Sea that cannot be categorised as 
typical pockmarks?

Could marine mammals be the cause? Please have a look at the theory in this 
article:


Schneider von Deimling, J., Hoffmann, J., Geersen, J., Koschinski, S., 
Lohrberg, A., Gilles, A., Belkin, I., Böttner, C., Papenmeier, S., Krastel, S. 
(2023) Millions of seafloor pits, not pockmarks, induced by vertebrates in the 
North Sea. Communications Earth & Environment 4, 478 (2023). DOI: 
10.1038/s43247-023-01102-y

https://www.nature.com/articles/s43247-023-01102-y


Abstract:

Seabed pockmarks are among the most prominent morphologic structures in the 
oceans. They are usually interpreted as surface manifestation of hydrocarbon 
fluids venting from sediments. Here we suggest an alternative hypothesis of 
pockmark formation based on latest multibeam echosounder data with a centimeter 
resolution. In the North Sea, >40,000 enigmatically shaped shallow depressions 
or ‘pits’ with a mean depth of 0.11 m were documented, that do not resemble 
known pockmark morphologies. Combining the new echosounder data with 
information from behavioral biology, physical oceanography, satellite remote 
sensing and habitat mapping, we conclude that harbor porpoises excavate 
sediments during benthic foraging. By grubbing the seabed, they cause sandeels 
to escape from the sediment and initiate the formation of seafloor pits. 
Time-lapse data reveals that the initially feeding pits serve as nuclei for 
scouring and eventually merge into larger scour-pits. With the immense number 
of vertebrates in the ocean, such megafauna-driven macro-bioturbation reshapes 
the seafloor, modulates sediment transport, and ultimately impacts associated 
ecosystems on a global scale.

Best wishes and Happy New Year,

Anita




--
Dr. Anita Gilles
University of Veterinary Medicine Hannover, Foundation
Institute for Terrestrial and Aquatic Wildlife Research (ITAW)
Werftstr. 6 | 25761 Büsum
Germany
Phone: +49 (0)511-8568177
Fax: +49 (0)511-8568181
anita.gil...@tiho-hannover.de
   
https://www.tiho-hannover.de/en/itaw/beschaeftigte/beschaeftigte-buesum/anita-gilles
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[MARMAM] JNCC-recognised MMO course

2024-01-08 Thread Carolyn Barton
Spaces available on a JNCC-recognised MMO course for UK waters on 15th and
16th January 2024, remote delivery by Zoom.  February dates will be
available soon.

This course will cover all the information needed for work as a Marine
Mammal Observer (MMO) in UK waters.  Taught by an instructor with over 25
years experience, the course content includes:

1) Impacts of noise on marine mammals
2) Introduction to activities that require mitigation
3) Legislation protecting marine mammals and marine licensing
4) Detailed examination of the JNCC guidelines for geophysical surveys,
pile driving and explosives
5) Data recording and reporting requirements
6) Visual monitoring and distance estimation
7) Overview of passive acoustic monitoring
8) Working as an MMO/ PAM operator
9) Identification of marine mammals

Zoom sessions will be a mixture of lectures and exercises, over 1.5 days.
Any exercises not completed during the sessions can be completed in your
own time.  There is also an online multiple choice exam to be done at your
convenience after the Zoom sessions (re-sits are possible if you don't pass
first time).  Each delegate gets individual feedback on their exercises and
the exam.

The cost of the course is £180 (180GBP).  On successful completion of the
course (including the exercises and exam) you will receive JNCC-recognised
certification, which is required for work as an MMO in UK waters.

For further details and for a registration form see www.carolynbarton.co.uk
or e-mail i...@carolynbarton.co.uk .
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[MARMAM] 2024 Cetaceans and Marine Fauna research internship in Italy

2024-01-08 Thread Info DDP
DELFINI DEL PONENTE ASSOCIATION, IMPERIA, ITALY

Cetaceans and Marine Fauna research project


Delfini del Ponente is currently looking for and accepting interns to join
our research project on bottlenose dolphins and other marine fauna in the
Western Ligurian Sea, Imperia (Italy) from March to October.

The project

The dolphin research project “Delfini del Ponente”, started in 2018, is the
first project focused on monitoring bottlenose dolphins (Tursiops truncatus)
occurrence and distribution in the Western Ligurian Sea. The project is
structured on an annual basis, to obtain data year-round. The study has
already provided very interesting information about this community inside
the study area - its social organisation, abundance of individuals,
distribution, and movements also outside the region. Our dataset includes
records on several cetaceans species and also on other marine fauna such as
seabirds - Mediterranean shearwaters (Puffinus yelkouan), Scopoli’s
shearwaters (Calonectris diomedea), Northern gannets (Morus bassanus),
Sandwich terns (Thalasseus sandvicensis) and more - sea turtles (Caretta
caretta) and sunfish (Mola mola), among others.

Surveys are carried out in coastal waters onboard a dedicated zodiac (6 m
inflatable boat) around 10 times per month. Training will focus on
recording data on marine fauna, collecting photos for photo-ID purposes,
environmental, marine traffic, geographical (GPS) and dolphins' behavioural
data. Land-based surveys take place in Imperia, in 2 different locations to
collect data on the presence/absence of dolphins, fishing boats in activity
and marine birds. Fieldwork is a great opportunity to get involved and
improve skills in cetaceans and marine biodiversity research. Both
land-based and zodiac surveys are weather-dependent, and their number can
change each month.

Office work (6 hours per day) includes training and lessons for the interns
and supervision of all the activities (photo-id work, transcription of
data, data entry, skin lesion analysis, QGIS work, etc...)


Where: Imperia, Italy


When: 1 March-30 October 2024 (minimum 30 days)

Number of interns for month: 2 /3

Activities:

   -

boat-based surveys monitoring the presence and distribution of
   bottlenose dolphins
   -

boat maintenance
   -

data collection of other cetaceans, fishes, seabirds, turtles
   -

office work, database updating
   -

photo-id matching and skin-lesion analysis
   -

land-based surveys /opportunistic surveys
   -

monitoring survey for potential sea turtle tracks (only in July-August)
   - pilot project
   -

lectures and training on cetacean ecology, biology and research
   techniques, and seabirds   and sea turtles id skills

This is a great opportunity to get involved in cetacean research, encounter
marine biodiversity while gaining fieldwork experience, travel and explore
the beautiful Liguria region and support cetacean research and
conservation.

Interns will be involved 5 days a week, 6-8 hours/day (depending on
fieldwork or office work)
During their free time, interns will have the opportunity to experience all
sorts of activities: swimming, diving, hiking, exploring historical sites,
visiting museums, surfing and sailing.

Skills/qualifications:

   -

   Minimum age of 18
   -

   Prior experience in cetaceans or boat-based surveys is not required
   -

   Degree or ongoing studies in biology, natural science, veterinary or
   similar (preferred)
   -

   Strong motivation and interest in cetaceans and research
   -

   Speak, read and write in fluent English
   -

   Be adaptable and highly flexible as fieldwork is weather-dependent
   -

   Be prepared to spend many hours on a small zodiac (5-6 m) and under the
   sun, be able to swim and work in harsh weather conditions both in nearshore
   and offshore waters



   -

   Be prepared to spend many hours in the office (generally 6 hours/day)



   -

   Be sociable and with a positive attitude as interns are expected to live
   and work in an international team


Internship fee

Delfini del Ponente is a self-funded research project, so participation in
this programme requires a tuition fee. The fee includes the accommodation
in an apartment in Imperia, tuition and all associated field costs during
the internship period (use of research vessel, training, use of equipment,
field trips, insurance). Transportation expenses to and from Imperia
(Italy) and food costs during the stay are not included in the fee.

How to apply:

Send your CV with a letter of interest to i...@delfinidelponente.it

For any further enquiries and details, please send an email to
i...@delfinidelponente.it


-- 
*Delfini Del Ponente APS*
Via Regione Bussi, 18100 Imperia (Italy)
C.F. 91048910086
pec: delfinidelpone...@pec.it
https://delfinidelponente.it/
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