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Quantitative descripton of marine litter at the seafloor of the Baltic Sea

Marine litter at the seafloor comprises different materials. Plastic is the most frequent material of marine litter found at the seafloor of the Baltic Sea (55,6%). "Abandoned, lost, discarded or otherwise lost fishing gear" (ALDFG) is a subgroup of plastic litter with special importance for environmental assessment because it has a defined source and may pose a health risk to animals. With the data provided, marine litter at the seafloor of the Baltic Sea was quantified and characterized with special regard to fishery as source. 72 litter items (LI) were collected within fishery catches by bottom trawling during three cruises in 2020 and 2021. The data were used to quantify litter at the seafloor of the Baltic Sea (9.2 LI/km²) including 2.2 LI/km² ALDFG and 0.4 LI/km² fishery nets. We conclude that fishery is an important source of litter and ALDFG represent a considerable share of marine litter with 22.2%.

Item characteristics of marine litter at the seafloor of the Baltic Sea

Plastic litter items (LI) at the seafloor of the Baltic Sea comprises different polymers. 40 LI were collected within fishery catches by bottom trawling during three cruises in 2020 and 2021 and analysed for their polymer types using attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, performed on a Spotlight 400 FTIR Imaging System (PerkinElmer Inc., Waltham, USA). The resulting spectra were compared against reference spectra databases. Just LI spectra showing correlation factors above 0.90 compared to the reference spectra were included in the evaluation. Polymer type of plastic LI under investigation could be attributed to six different polymer groups: Polyethylene (PE), polyamide (PA), polypropylene (PP), polyvinylchloride (PVC), polyester (PES) and polyethylene terephthalate (PET). PE was the most frequently identified polymer representing 59% of all plastic items under investigation - followed by PA (17%), PP (12%), PVC (7%) and PES (3%).

Mittlerer Anteil Plastik 2012-2017

Festgestellter Plastikanteil beim Strandmüllmonitoring an der schleswig-holsteinischen Ostseeküste. Das Monitoring entlang der Küste Fehmarns wurde vom NABU organisiert und mit Hilfe von freiwilligen Helfern durchgeführt. Der angegebene Plastikanteil ergibt sich aus den gemittelten Plastikfunden auf 100m-Transekten in dem genannten Zeitraum. Es werden bis zu 4 Erfassungen pro Monitoringjahr durchgeführt, wobei das Monitoringjahr die Erfassungen von Anfang Dezember des vorhergehenden Jahres bis Ende November des genannten Jahres umfasst. Das Erfassung des Strandmülls erfolgt nach der OSPAR Beach Litter Guideline (2010).

Strandmüllmonitoring (sh-lkn)

Zusammengeführte Daten des Strandmüllmonitorings der schleswig-holsteinischen, hamburgischen und niedersächsischen Nordseeküste. Das Strandmüllmonitoring erfolgt nach der OSPAR Beach Litter Guideline (2010). Es werden dabei bei bis zu 4 Erfassungen pro Monitoringjahr alle Müllteile auf vorgegebenen 100m-Transekten erfasst. Ein Monitoringjahr umfasst alle Erfassungen von Anfang Dezember des vorhergehenden Jahres bis Ende November des genannten Jahres. Bei den hier bereitgestellten Daten handelt es sich sowohl um die geprüfte Rohdaten (Layer:Strandmüllmonitoring (MDI_MM_BL_WFS) als auch um aggregierte Daten: Mittlere Anzahl Müllteile 2012-2017 (BL_ges_1217), Mittlere Anzahl Müllteile 2018 (BL_ges_2018), Mittlerer Anteil Plastik 2012-2017 (BL_Pla_1217), Median Müllteile 2012-2017 (BL_MED_ges_1217).

Abfall und Recycling Hamburg

Depotcontainerstandplätze Depotcontainerstandplätze sind Einrichtungen zur sortenreinen Erfassung von Altpapier, Altglas (braun, grün, weiß), Leichtverpackungen (z. B. Kunststoffe und Metalle) sowie Elektro- und Elektronikkleingeräten (ohne Batterien und Akkumulatoren). Die Depotcontainerstandplätze befinden sich im Straßenraum und stehen allen Bürger:innen kostenlos zur getrennten Entsorgung von Wertstoffen zur Verfügung. Die Nutzungszeiten der Depotcontainer sind werktags (Mo. – Sa.) von 07:00 bis 20:00 Uhr. Nur in diesen Zeiten dürfen insbesondere Altglascontainer genutzt werden. Recyclinghöfe Auf Recyclinghöfen der Stadtreinigung Hamburg können neben Sperrmüll, Metallen, Grünabfall und Alttextilien auch weitere Abfallfraktionen und Problemstoffe in haushaltsüblichen Mengen abgegeben werden. Die Recyclinghöfe stehen allen Hamburger Bürgerinnen und Bürgern zur Verfügung. Zur Legitimation bei der Anlieferung ist ein gültiges Ausweisdokument oder eine Meldebescheinigung erforderlich. Firmenkunden und Institutionen (z. B. Vereine) können die Recyclinghöfe nur kostenpflichtig nutzen. Hinweis zur Datenaktualität Die Geo-Daten werden regelmäßig aktualisiert. Die Aktualisierung erfolgt in der Regel monatlich. Kurzfristige baustellenbedingte Umstellungen von Depotcontainern sind daher teilweise nicht enthalten.

Ecosystem functions of rare arable plants - field experiment: Araneae data

Partly taken from the materials and methods of https://doi.org/10.1016/j.baae.2022.12.003: To compare the activity densities of ground-dwelling predators between treatments with and without RAPs, spiders were sampled using pitfall traps, which were set up after each round of aphid counting (one per plot, twice per year; Brown & Matthews, 2016). The traps (with a volume of 400 ml and a width of 90 mm) were filled with a mixture of water and ethylene glycol (1:1; 120 ml) and dug at ground level into the middle of each plot. The traps were covered with a plastic roof and a metal grid (15 × 15 mm grid size) to avoid overflowing during rain and accidental rodent catches (Császár et al., 2018). The traps were activated for 7 days. Subsequently, all arthropods were transferred into 70% ethanol. Spiders were identified to species according to Nentwig et al. (2019). Spider hunting strategy (active hunter or web-builder) was used as the feeding trait according to Cardoso et al. (2011).

Ecosystem functions of rare arable plants - field experiment: Carabidae data

Partly taken from the materials and methods of https://doi.org/10.1016/j.baae.2022.12.003: To compare the activity densities of ground-dwelling predators between treatments with and without RAPs, carabids were sampled using pitfall traps, which were set up after each round of aphid counting (one per plot, twice per year; Brown & Matthews, 2016). The traps (with a volume of 400 ml and a width of 90 mm) were filled with a mixture of water and ethylene glycol (1:1; 120 ml) and dug at ground level into the middle of each plot. The traps were covered with a plastic roof and a metal grid (15 × 15 mm grid size) to avoid overflowing during rain and accidental rodent catches (Császár et al., 2018). The traps were activated for 7 days. Subsequently, all arthropods were transferred into 70% ethanol. Carabids were identified to species according to Hůrka (1996). Carabid feeding behavior was classified according to Homburg et al. (2014). To simplify the dataset, carabid feeding behavior was classified as predominantly granivorous (species mainly feed on seeds and fruits) or as carnivorous/omnivorous, because carnivorous and omnivorous species are potentially feeding on aphids and other non-plant material.

Ecosystem functions of rare arable plants - field study: Araneae data

Partly taken from the materials and methods of https://doi.org/10.1016/j.baae.2022.12.003: To compare the activity densities of ground-dwelling predators between treatments with and without RAPs, spiders were sampled using pitfall traps, which were set up after each round of aphid counting (one per plot, twice per year; Brown & Matthews, 2016). The traps (with a volume of 400 ml and a width of 90 mm) were filled with a mixture of water and ethylene glycol (1:1; 120 ml) and dug at ground level into the middle of each plot. The traps were covered with a plastic roof and a metal grid (15 × 15 mm grid size) to avoid overflowing during rain and accidental rodent catches (Császár et al., 2018). The traps were activated for 7 days. Subsequently, all arthropods were transferred into 70% ethanol. Spiders were identified to species according to Nentwig et al. (2019). Spider hunting strategy (active hunter or web-builder) was used as the feeding trait according to Cardoso et al. (2011).

Ecosystem functions of rare arable plants - field study: Carabidae data

Partly taken from the materials and methods of https://doi.org/10.1016/j.baae.2022.12.003: To compare the activity densities of ground-dwelling predators between treatments with and without RAPs, carabids were sampled using pitfall traps, which were set up after each round of aphid counting (one per plot, twice per year; Brown & Matthews, 2016). The traps (with a volume of 400 ml and a width of 90 mm) were filled with a mixture of water and ethylene glycol (1:1; 120 ml) and dug at ground level into the middle of each plot. The traps were covered with a plastic roof and a metal grid (15 × 15 mm grid size) to avoid overflowing during rain and accidental rodent catches (Császár et al., 2018). The traps were activated for 7 days. Subsequently, all arthropods were transferred into 70% ethanol. Carabids were identified to species according to Hůrka (1996). Carabid feeding behavior was classified according to Homburg et al. (2014). To simplify the dataset, carabid feeding behavior was classified as predominantly granivorous (species mainly feed on seeds and fruits) or as carnivorous/omnivorous, because carnivorous and omnivorous species are potentially feeding on aphids and other non-plant material.

WMS Abfall und Recycling Hamburg

Dieser Web Map Servise (WMS) beinhaltet die Depotcontainerstandplätze und Recyclinghöfe der Stadtreinigung Hamburg. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.

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