Essays about: "Baltic ringed seal"

Found 5 essays containing the words Baltic ringed seal.

  1. 1. Microplastics In Ringed Seals From The Baltic Sea - Method development regarding the detection of microplastics in the digestive tract contents of marine mammals

    University essay from Lunds universitet/Examensarbeten i biologi

    Author : Nicola Parfitt; [2021]
    Keywords : Biology and Life Sciences;

    Abstract : Plastic pollution is a severe global problem and every year approximately 368 million tons of plastic is produced. Both terrestrial and marine environments are impacted and hundreds of species affected. READ MORE

  3. 2. Reproductive status of the female Baltic ringed seal

    University essay from SLU/Dept. of Clinical Sciences

    Author : Alexandra Odevall; [2019]
    Keywords : Baltic ringed seal; occlusion; PCB; DDT; reproduction;

    Abstract : The population of ringed seals in the Baltic Sea was estimated to around 190 000–220 000 individuals in the 1900’s and decreased to approximate 5 000 in the late 1970s. The number of pregnant females also decreased during this time. READ MORE

  4. 3. Analysing the seal-fishery conflict in the Baltic Sea and exploring new ways of looking at marine mammal movement data

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Ornella Jogi; [2017]
    Keywords : Halichoerus grypus; Phoca hispida botnica; seal-fishery conflict; human-wildlife conflict; integrated step selection analysis;

    Abstract : A comprehensive analysis of the available data reveals that there is currently not enough information for making informed management decisions regarding the seal-fishery conflict in the Baltic Sea. Knowledge of hidden and visual damages is limited, which means that the actual cost to the fishing industry from damages is not known. READ MORE

  5. 4. Method Development for Quantification of Different Persistent Organic Pollutants in Ringed Seal (Phoca hispida) from the Baltic Sea

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Amelie Nordström; [2016]
    Keywords : Ringed seal; Baltic Sea; Persistent Organic Pollutants; Sample pre-treatment;

    Abstract : Persistent organic pollutants such as polychlorinated biphenyls (PCBs), DDT and polybrominated diphenyl ethers (PBDEs) tend to accumulate in biota and are transferred through the aquatic food web, which result in a high accumulation in marine mammals. In recent years various novel flame retardants (nBFRs), which have replaced the banned PBDEs, have also started to occur in the environment. READ MORE

  6. 5. Fusing osteology with virtual reality - Three dimensional morphological differences between harp seal (Pagophilus groenlandicus) and ringed seal (Phoca hispida)

    University essay from Lunds universitet/Institutionen för arkeologi och antikens historia

    Author : Aija Macane; [2012]
    Keywords : morphological differences; harp seal; Pagophilus groenlandicus; ringed seal; Phoca hispida; Baltic Sea; 3D models; virtual reality; 3D scanner; History and Archaeology;

    Abstract : Seal remains, especially the harp seal is a common find from Stone Age settlements in the Baltic basin. The presence and disappearance of harp seal form the Baltic Sea is an interesting and widely discussed topic. Seal bones are quite easy determined to family (Phocidae), but more difficult to determine to species. READ MORE