[MARMAM] New publication: dwarf minke whales

[Lis Bittencourt]

Dear colleagues,

On behalf of my co-authors, I would like to share our new article:

Bittencourt L, Carvalho R, Santos-Neto EB, Bisi TL, Lailson-Brito Jr. J and
Azevedo AF (2024) Dwarf minke whales (*Balaenoptera acutorostrata*)
acoustic signals from the South Atlantic Ocean.
Front. Mar. Sci. 11:1338538.

Abstract: At present, there are still populations of different
balaenopterids that have never been acoustically recorded and observed
simultaneously. In an opportunistic sighting of dwarf minke whales during
winter in southeastern Brazil, we have registered six individuals and
recorded over 200 acoustic signals. Signals were quantified and had their
acoustic parameters extracted; the calling rate was estimated as the number
of sounds per minute, and the repetition rate was estimated as the number
of calls of the same type emitted per minute. Four call types were
described: Ba1, Ba2, Ba3 and Ba4. The most common and distinctive call was
the Ba1, composed of three components: one had a peak frequency of 615.0 ±
189.8 Hz, and the other had peak frequencies of 1632.0 ± 191.5 and 5038.2 ±
195.1 Hz. Ba1 repetition varied from 2.4 to 11.1 repetitions/min. Ba2 was
the second most common call with a peak frequency of 485.2 ± 421.9 Hz. The
total calling rate varied from 4.4 to 11.1 calls/min. The signals are in
the same frequency range reported for other areas but contain different
structures.

It is open access and you can download the pdf here:
https://www.frontiersin.org/articles/10.3389/fmars.2024.1338538/full

Kind regards,

Lis
PhD in Oceanography
Laboratório de Mamíferos Aquáticos e Bioindicadores - MAQUA
Universidade do Estado do Rio de Janeiro - UERJ
Brazil
___
MARMAM mailing list
MARMAM@lists.uvic.ca
https://lists.uvic.ca/mailman/listinfo/marmam

[MARMAM] Online Course Announcement: An Introduction to Making Graphs and Maps for Biologists using R, 25 to 28 March 2024

[Colin D MacLeod]

Data preparation, presentation and analysis are key skills for all those 
working with marine mammals, and of the available software packages for 
doing these, R has rapidly become the most widely used. This means that 
a knowledge of how to prepare, analyse and visualise data in R is now an 
essential skill for marine mammalogists.


To help marine mammalogists (and other biologists) develop their skills 
in this area, we will be running an instructor-led online course at the 
end of March 2024 based around our book, An Introduction to Making 
Graphs and Maps for Biologists using R.


It will be held on the Zoom video-conferencing platform and will provide 
all the practical knowledge and experience you need to make a wide range 
of high quality and informative data visualisations from biological data 
in R using packages such as GGPlot. While it may be useful, no previous 
experience with R is required to do this course.


The course will run from the 25th to the 28th March 2024. It will 
consist of four three-hour sessions, and one session will need to be 
completed each day. However, you will have a choice of completing it 
between 10:00 and 13:00 UK Time (primarily for those living in Europe, 
Asia and Africa) or 19:00 to 22:00 UK Time (primarily for those living 
in North and South America). This choice of time slots for each session 
allows participants from as wide a range of time zones to participate in 
the course.


Attendance will be limited to a maximum of 24 people per session. The 
fees for this course are GBP 295 per person (with a discounted rate of 
GBP 245 for students, the unwaged and those working for registered 
charities). To book a place, or for more information, you can either 
email us at i...@gisinecology.com or click on the link below.

http://gisinecology.com/live-online-course-an-introduction-to-making-graphs-and-maps-for-biologists-using-r/

About the Course:

This is a practical course and it is aimed at anyone who wishes to learn 
how to make high quality and informative graphs and maps based on 
biological data using R. The topics covered on this course will include 
an introduction to making graphs using the GGPlot package, making bar 
graphs of count data, making graphs of summary statistics (such as mean 
values) with error bars, making point graphs of summary statistics for 
two variables with vertical and horizontal error bars, making box plots, 
making X-Y scatter plots of individual data points, making line graphs 
of time series data, making pair-plot matrices of environmental 
variables, making pie charts, making bubble graphs, making mixed type 
graphs, making simple X-Y plots of tracking data and making maps from 
biological data in R. In addition, you will learn how to use a variety 
of different R packages and how to create workflows for making any type 
of graph, map or data visualisation in R.


Each session will consist of a series of background talk covering 
specific topics (more details are provided below), followed by related 
practical exercises based on instructions from An Introduction to Making 
Graphs and Maps for Biologists using R. While you are encouraged to 
remain online during the practical sessions, you can choose to go 
off-line as you work though the exercises (or if you need to take a 
break). However, if you have any questions, the course instructor will 
be available throughout the course for you to ask any questions you wish 
at any point.


This course will be hosted by Dr Colin D MacLeod, one of the authors of 
An Introduction to Making Graphs and Maps for Biologists using R.


At the end of the course, all attendees will receive a certificate of 
attendance and completion. Each certificate is embossed with the GIS In 
Ecology official stamp to prevent its fraudulent reproduction. In 
addition, each certificate has its own unique identification number that 
we will record, along with your name, meaning that we can verify the 
authenticity of the certificates we issue (and the course you have 
completed) on request.


Specific Topics This Course Will Cover:

*

An introduction to R and RStudio (and, if required, this will include 
help with installing these software packages).

*

What you need to know to get started with using R.
*

How to create your first graphs in R using GGPlot.
*

How to create graphs displaying groups of data with GGPlot.
*

How to create graphs displaying individual data points with GGPlot
*

How to create other types of graphs, including pie charts, bubble 
graphs, mixed type graphs and X-Y plots of tracking data.

*

How to create simple maps from biological data using R.
*

How to work out how to do things in R.
*

How to create an annotated R code archive so you have a record of what 
you have done.___
MARMAM mailing list
MARMAM@lists.uvic.ca
https://lists.uvic.ca/mailman/listinfo/marmam

[MARMAM] New publication: The role of the environment at the local and large-scale levels on the abundance of gray whales (Eschrichtius robustus) in Baja California

[Tatiana Acosta Pachon]

Dear MARMAM colleagues,

On behalf of my co-authors, I am pleased to share our new publication in
Regional studies in Marine Science, Vol. 71:

Molina-Carrasco, F.D.; Ortega-Rubio, A.; Acosta-Pachón, T.A., López-Paz,
N.; Mariano-Meléndez, E.; Montes-García, C.; Martínez-Rincón, R.O.


The role of the environment at the local and large-scale levels on the
abundance of gray whales (*Eschrichtius robustus*) in Baja California.



The Ojo de Liebre Lagoon is the largest wintering and calving area on the
Baja California Peninsula for the north Pacific stock of gray whales
(Eschrictius robustus), where up to 2721 individuals have been counted in a
single season (January-April). This study describes the effects of spatial
(zones), temporal (months), and environmental factors at the local
(temperature and chlorophyll-a) and large-scale levels (Pacific Decadal
Oscillation, PDO) on the abundance of gray whales in this lagoon using
generalized additive models. Results suggest that larger populations are
expected at temperatures below 15 ◦C and Chl-a values above 1 mg m- 3
during the neutral (0- 1) and positive (>1) phases of the PDO, in February
and March, and around the mouth of the lagoon (zone 6). Findings highlight
the importance of environmental variability on the abundance of this
species at the local and large-scale levels. According to our models, the
abundance of the gray whales that arrive in the Ojo de Liebre Lagoon is
affected by local and large-scale environmental variability. The latter
factor was evaluated by an index that integrated atmospheric and oceanic
variations in the northeast and tropical Pacific Ocean. In spatial terms,
the physical characteristics inside the lagoon may be the main factors that
impact the distribution of whales. Management and conservation measures can
use these results to improve strategies, considering the variability of the
population in both local and long-term perspectives.


You can find de paper here:

https://www.sciencedirect.com/science/article/abs/pii/S2352485524000537


Or you can write to:

tatyaco...@gmail.com

raul.martinez.rin...@gmail.com


If you have any questions about our work, please reach out.

Cheers,

Tatiana.
*---*

*Dra. Tatiana A. Acosta Pachón*
tatyaco...@gmail.com

Profesora - Investigadora
Departamento Académico de Ciencias Marinas y Costeras
Universidad Autónoma de Baja California Sur
Baja California Sur, Mexico
Tel: +52 612 1238800 Ext. 4140
___
MARMAM mailing list
MARMAM@lists.uvic.ca
https://lists.uvic.ca/mailman/listinfo/marmam

[MARMAM] Post-doc opportunity at Dolphin Research Center

[Kelly Jaakkola]

Dear MARMAM community,


Dolphin Research Center (DRC) invites applications for a postdoctoral 
researcher to join our research group studying dolphin cognition, 
behavior, and welfare. DRC is a not-for-profit education and research 
facility, home to a family of dolphins and sea lions, located in the 
Florida Keys.



The successful candidate should hold a PhD in comparative psychology, 
zoology, animal behavior, or a related field. The specific area of 
specialization is open to negotiation. This postdoctoral position will 
be responsible for coding, analyzing, and publishing studies using 
existing data sets, and will also have the opportunity to 
collaboratively design and conduct novel research projects in their area 
of interest.



Our ideal candidate will have:

 *

   a proven track record of peer-reviewed publications

 *

   the ability to communicate scientific concepts and arguments clearly
   and compellingly, both orally and in writing

 *

   an excellent understanding of study design and statistics

 *

   the ability to work well both independently and as part of a team


The position is for one year initially, with a possibility of renewal 
contingent on performance and mutual satisfaction. Starting date is 
flexible.



To apply, please submit the following to drc...@dolphins.org, with the 
subject line “Postdoc application”:


 *

   a cover letter describing your motivation, research interests,
   experience, and goals

 *

   your CV

 *

   pdfs of up to 2 of your key publications or submitted manuscripts

 *

   contact information for 2 academic references


Complete applications are due by May 1, 2024.


For further information, please contact Dr. Kelly Jaakkola at 
ke...@dolphins.org .




Best wishes,


/Kelly Jaakkola, PhD
Director of Research
Dolphin Research Center
/___
MARMAM mailing list
MARMAM@lists.uvic.ca
https://lists.uvic.ca/mailman/listinfo/marmam

[MARMAM] Reminder - Early Registration Ends Soon for SEAMAMMS

[Andrew Read, Ph.D.]

This is just a gentle reminder that early registration will end on March 1st 
for the Southeast Atlantic Marine Mammal Symposium (SEAMAMMS), which will be 
held at the Duke University Marine Lab from April 26-28. The cost of early 
registration is $75, made payable through the registration form on the web site 
(https://seamamms.wordpress.com). After March 1, registration will cost $100. 
Everyone who submitted an abstract should now have been notified regarding 
their presentation mode. We are looking forward to seeing many new colleagues 
and old friends in in a few weeks in historic Beaufort, North Carolina. Please 
check the website for additional information regarding the meeting, lodging, 
banquet, workshops, and excursions on Sunday afternoon.
___
MARMAM mailing list
MARMAM@lists.uvic.ca
https://lists.uvic.ca/mailman/listinfo/marmam