[MARMAM] New publication: Spatio-temporal patterns in marine mammal community composition

Ilse van Opzeeland ilse.van.opzeeland at awi.de
Tue Mar 24 08:43:39 PDT 2020


Dear colleagues,

We are pleased to inform you of our publication in Marine Ecology
Progress Series, titled: Year-round passive acoustic data reveal
spatio-temporal patterns in marine mammal community composition in the
Weddell Sea, Antarctica. The article is published under open access
and can be found at:
https://www.int-res.com/articles/meps_oa/m638p191.pdf.

The abstract can be found below.

Van Opzeeland I, Hillebrand H
Year-round passive acoustic data reveal spatio-temporal patterns in
marine mammal community composition in the Weddell Sea, Antarctica
MEPS 638:191-206


Best Regards,

Ilse Van Opzeeland

------------------------------

ABSTRACT: To date, the majority of studies investigating marine mammal
distribution and behavior take a single-species perspective, which is 
often driven by
the logistic difficulties of collecting appropriate data at sea. Passive 
acoustic monitoring,
provided recording tools exhibit sufficient bandwidth, has the potential 
to provide insights into
community structure as devices operate autonomously simultaneously 
collecting data on baleen,
pinniped and toothed whale acoustic presence. Data can provide 
information on local species
diversity, residency times and co-occurrence. Here, we used multi-year 
passive acoustic data from 6
sites in the Weddell Sea, Southern Ocean, to explore how local marine 
mammal community
compositions develop over time and in relation to sea-ice. Diversity 
peaked in austral late
spring and early summer, shortly before seasonal sea-ice break-up. The 
effective number of species
exhibited little variation over time, reflecting that species remain in 
Antarctic waters throughout
austral winter. Community composition showed almost complete seasonal 
overturn, indicating that
species replace each other throughout the year. For all 6 sites, 
community dissimilarity
increased with increasing temporal distance,reflecting temporal trends 
in community composition beyond seasonality. Several species exhibited 
significant positive or negative co-occurrence patterns over time.
These seasonal associations were consistent across all 5 oceanic sites, 
but partly inversed at the Western
Antarctic Peninsula recording site. This study shows that the 
application of biodiversity metrics to
passive acoustic monitoring data can foster insights into the timing of 
behaviors and community
composition, which can boost the interpretation of responses in the 
light of ongoing environmental
changes.



More information about the MARMAM mailing list