02178nas a2200217 4500008004100000022001400041245009300055210006900148260001600217520146300233100001601696700002101712700002401733700002701757700001601784700002601800700002601826700002001852700002601872856006201898 2019 eng d a0824-046900aSeasonal variation in Arctic marine mammal acoustic detection in the northern Bering Sea0 aSeasonal variation in Arctic marine mammal acoustic detection in cDec-12-20203 a

Declines in Arctic sea ice cover are influencing the distribution of protected endemic marine mammals, many of which are important for local Indigenous Peoples, and increasing the presence of potentially disruptive industrial activities. Due to increasing conservation concerns, we conducted the first year‐round acoustic monitoring of waters off Gambell and Savoonga (St. Lawrence Island, Alaska), and in the Bering Strait to quantify vocalizing presence of bowhead whales, belugas, walruses, bearded seals, and ribbon seals. Bottom‐mounted archival acoustic recorders collected data for up to 10 months per deployment between 2012 and 2016. Spectrograms were analyzed for species‐typical vocalizations, and daily detection rates and presence/absence were calculated. Generalized additive models were used to model call presence as a function of time‐of‐year, sea surface temperature, and sea ice concentration. We identified seasonality in call presence for all species, corroborating previous acoustic and distribution studies, and identified finer‐scale spatiotemporal distribution via occurrence of call presence between different monitoring sites. Time‐of‐year was the strongest significant effect on call presence for all species. These data provide important information on Arctic endemic species' spatiotemporal distributions in biologically and culturally important areas within a rapidly changing Arctic region.

1 aChou, Emily1 aAntunes, Ricardo1 aSardelis, Stephanie1 aStafford, Kathleen, M.1 aWest, Leigh1 aSpagnoli, Christopher1 aSouthall, Brandon, L.1 aRobards, Martin1 aRosenbaum, Howard, C. uhttps://onlinelibrary.wiley.com/doi/abs/10.1111/mms.1265802484nas a2200253 4500008004100000245015800041210006900199260002000268300001100288490000600299520155400305653001101859653002601870653001901896653002501915653000901940100002301949700002801972700002202000700001702022700002702039700002602066856013802092 2018 eng d00aCulturally transmitted song exchange between humpback whales ( Megaptera novaeangliae) in the southeast Atlantic and southwest Indian Ocean basins0 aCulturally transmitted song exchange between humpback whales iMe cApr-16-20182023 a1723050 v53 a

In migratory marine species, investigating population connectivity and structure can be challenging given barriers to dispersal are less evident and multiple factors may influence individual movement patterns. Male humpback whales sing a song display that can provide insights into contemporary connectivity patterns, as there can be a cultural exchange of a single, population-wide shared song type with neighbouring populations in acoustic contact. Here, we investigated song exchange between populations located on the east and west coasts of Africa using 5 years of concurrent data (2001–2005). Songs were qualitatively and quantitatively transcribed by measuring acoustic features of all song units and then compared using both Dice’s similarity index and the Levenshtein distance similarity index (LSI) to quantitatively calculate song similarity. Song similarity varied among individuals and potentially between populations depending on the year (Dice: 36–100%, LSI: 21–100%), suggesting varying levels of population connectivity and/or interchange among years. The high degree of song sharing indicated in this study further supports genetic studies that demonstrate interchange between these two populations and reinforces the emerging picture of broad-scale connectivity in Southern Hemisphere populations. Further research incorporating additional populations and years would be invaluable for better understanding of fine-scale, song interchange patterns between Southern Hemisphere male humpback whales.

10aAfrica10acultural transmission10ahumpback whale10apopulation structure10asong1 aGarland, Ellen, C.1 aCarvajal, Gabriella, A.1 aKing, Carissa, D.1 aCollins, Tim1 aRazafindrakoto, Yvette1 aRosenbaum, Howard, C. uhttp://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.172305https://syndication.highwire.org/content/doi/10.1098/rsos.17230500575nas a2200157 4500008004100000245012200041210006900163260001600232300001400248490000700262100002500269700002100294700002300315700002600338856005300364 2017 eng d00aCommon nonsong social calls of humpback whales (Megaptera novaeangliae) recorded off northern Angola, southern Africa0 aCommon nonsong social calls of humpback whales Megaptera novaean cJan-01-2017 a365 - 3750 v331 aRekdahl, Melinda, L.1 aTisch, Charlotte1 aCerchio, Salvatore1 aRosenbaum, Howard, C. uhttp://doi.wiley.com/10.1111/mms.2017.33.issue-1