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  • epibiota; floating marine debris; LITTER; Litter Survey; Maria S. Merian; MSM41; MSM41_litter-T1; MSM41_litter-T10; MSM41_litter-T11; MSM41_litter-T12; MSM41_litter-T13; MSM41_litter-T14; MSM41_litter-T15; MSM41_litter-T16; MSM41_litter-T17; MSM41_litter-T18; MSM41_litter-T19; MSM41_litter-T2; MSM41_litter-T20; MSM41_litter-T21; MSM41_litter-T22; MSM41_litter-T23; MSM41_litter-T24; MSM41_litter-T25; MSM41_litter-T26; MSM41_litter-T27; MSM41_litter-T28; MSM41_litter-T29; MSM41_litter-T3; MSM41_litter-T30; MSM41_litter-T31; MSM41_litter-T32; MSM41_litter-T33; MSM41_litter-T34; MSM41_litter-T35; MSM41_litter-T37; MSM41_litter-T38; MSM41_litter-T39; MSM41_litter-T4; MSM41_litter-T40; MSM41_litter-T41; MSM41_litter-T42; MSM41_litter-T43; MSM41_litter-T44; MSM41_litter-T45; MSM41_litter-T46; MSM41_litter-T47; MSM41_litter-T48; MSM41_litter-T49; MSM41_litter-T5; MSM41_litter-T50; MSM41_litter-T51; MSM41_litter-T52; MSM41_litter-T53; MSM41_litter-T54; MSM41_litter-T55; MSM41_litter-T56; MSM41_litter-T57; MSM41_litter-T58; MSM41_litter-T59; MSM41_litter-T6; MSM41_litter-T60; MSM41_litter-T61; MSM41_litter-T62; MSM41_litter-T63; MSM41_litter-T64; MSM41_litter-T65; MSM41_litter-T7; MSM41_litter-T8; pollution; rafting; Sargasso Sea; Sargassum community; South Atlantic Ocean  (1)
  • marine organism  (1)
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  • 1
    facet.materialart.
    Unknown
    Metadata of transects of visual ship based flotsam survey in the Sargasso Sea (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: During cruise MSM41 of the German research vessel Maria S. Merian in April 2015 a visual ship based survey was conducted on the composition and density of natural and anthropogenic flotsam in the Sargasso Sea (subtropical NW Atlantic). On transits between the regular stations of the cruise, flotsam was quantified on transects of 10 m width and lengths of 9.1 - 25.5 km. Start and end coordinates were determined from a handheld GPS. This dataset summarizes the metadata of this survey, including the time, coordinates of start and end point of the transects, as well as distance and area covered. Additionally, results are presented as densities of floating marine debris and pelagic Sargassum given in total numbers per transect and standardized to items km-2. The speed of the vessel was recorded from the handheld GPS for 2-7 times per transect in irregular intervals to estimate the average vessel speed during the observations.
    Keywords: epibiota; floating marine debris; LITTER; Litter Survey; Maria S. Merian; MSM41; MSM41_litter-T1; MSM41_litter-T10; MSM41_litter-T11; MSM41_litter-T12; MSM41_litter-T13; MSM41_litter-T14; MSM41_litter-T15; MSM41_litter-T16; MSM41_litter-T17; MSM41_litter-T18; MSM41_litter-T19; MSM41_litter-T2; MSM41_litter-T20; MSM41_litter-T21; MSM41_litter-T22; MSM41_litter-T23; MSM41_litter-T24; MSM41_litter-T25; MSM41_litter-T26; MSM41_litter-T27; MSM41_litter-T28; MSM41_litter-T29; MSM41_litter-T3; MSM41_litter-T30; MSM41_litter-T31; MSM41_litter-T32; MSM41_litter-T33; MSM41_litter-T34; MSM41_litter-T35; MSM41_litter-T37; MSM41_litter-T38; MSM41_litter-T39; MSM41_litter-T4; MSM41_litter-T40; MSM41_litter-T41; MSM41_litter-T42; MSM41_litter-T43; MSM41_litter-T44; MSM41_litter-T45; MSM41_litter-T46; MSM41_litter-T47; MSM41_litter-T48; MSM41_litter-T49; MSM41_litter-T5; MSM41_litter-T50; MSM41_litter-T51; MSM41_litter-T52; MSM41_litter-T53; MSM41_litter-T54; MSM41_litter-T55; MSM41_litter-T56; MSM41_litter-T57; MSM41_litter-T58; MSM41_litter-T59; MSM41_litter-T6; MSM41_litter-T60; MSM41_litter-T61; MSM41_litter-T62; MSM41_litter-T63; MSM41_litter-T64; MSM41_litter-T65; MSM41_litter-T7; MSM41_litter-T8; pollution; rafting; Sargasso Sea; Sargassum community; South Atlantic Ocean
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 27.3 kBytes
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Role of trait combinations, habitat matrix, and network topology in metapopulation recovery from regional extinction (2021)
    Details
    Publication Date: 2021-12-01
    Description: We studied the role of oceanographic conditions and life history strategies on recovery after extinction in a metapopulation of marine organisms dispersing as pelagic larvae. We combined an age-structured model with scenarios defined by realistic oceanographic conditions and species distribution along the Irish Sea coast (North Europe). Species life history strategies were modeled combining the dispersal behaviors with two levels of fecundity. Recovery times were quantified after simulating extinction in four regions. Two alternative strategies (high fecundity or larval tidal transport) led to short recovery times, irrespective of the effects of other drivers. Other strategies and low larval survival exacerbated the effects of oceanographic conditions on recovery times: longer times were associated with for example the presence of frontal zones isolating regions of extinction. Recovery times were well explained by the connectivity of each focal population with those located outside the area of extinction (which was higher in the so-called small world topologies), but not by subsidies (direct connections with populations located nearby). Our work highlights the complexities involved in population recovery: specific trait combinations may blur the effects of the habitat matrix on recovery times; K-strategists (i.e., with low fecundities) may achieve quick recovery if they possess the appropriate dispersal traits. High larval mortality can exacerbate the effect of oceanographic conditions and lead to heterogeneity in recovery times. Overall, processes driving whole network topologies rather than conditions surrounding local populations are the key to understand patterns of recovery.
    Keywords: 577.7 ; marine organism ; extinction ; recovery patterns ; simulation ; effects of oceanographic conditions
    Language: English
    Type: map
    Location Call Number Limitation Availability
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    CITATION GEO-LEO
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