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    FW-I-6: Endangered spruce stands

    The stacked columns chart FW-I-6 ’Endangered spruce stands’ shows – for the period of 1960 to 2021 – the proportion in per cent of areas in Germany planted with spruce trees, in which the spruce bark beetle would be able to achieve a specific number of potential reproduction cycles. In this process, a differentiation was made between the number of potential reproduction cycles between 1 and 6.

    … TI für Waldökosysteme (modelling with PHENIPS/ national forest inventory 2012) Download image (115.90 kB) The following contents contain this medium: FW-I-6 + 7: …

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    LW-R-1: Adaptation of management rhythms

    The line chart indicates – for the period of 1970 to 2021 – the mean point in time when maize cultivation begins, in terms of a calendar date from the start of the year. Although the time series proceeds with some fluctuation, it shows a significantly falling trend: To date, the latest onset of drilling occurred in 1970 on day 130 of the year – early May. In 2021 drilling began as early as day 119 of the year – end of April.

    … Adaptation of management rhythms Source: DWD (phenological observation network) Download image (98.21 kB) The following contents contain this medium: LW-R-1: …

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    FI-I-1: Distribution of thermophilic marine species

    Six curves show the percentage of catches with at least one Lusitanian fish species for different boxes in a time series from 1987 to 2013. The time series for Box C runs close to the 0 axis with a maximum value of just under 20 per cent in 2014. The curve for Box H is similar, with a maximum of around 5 per cent in 2003.

    … Thünen-Institut für Seefischerei (GSBTS: German Small-scale Bottom Trawl Survey) Download image (156.45 kB) The following contents contain this medium: FI-I-1: …

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    BAU-R-1: Recreation areas

    By way of a line chart, the illustration shows the recreation and cemetery areas in square metres per inhabitant, differentiated threefold in terms of cities with more than 500.000 inhabitants (metropoles), more than 100,000 to 500,000 inhabitants (cities) and more than 50,000 up to 100,000 inhabitants (large medium-sized town).

    … of the statistical offices of the federal states (indicator C4 – recreation area) Download image (126.81 kB) The following contents contain this medium: BAU-R-1: …

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    GE-I-5: Pathogen vectors – case study

    The illustration GE-I-5 ’Pathogen vectors – case study’ contains a biaxial chart. A bar chart is used to indicate – for the years from 2005 to 2021 – the proportion of samplings and traps with positive finds of the Tiger Mosquito (eggs or adult mosquitoes) in the Upper Rhine Rift Valley in per cent. The annual number of samplings is shown by means of dots. The chart contains three methodological breaks marked by dotted lines.

    … GE-I-5: Pathogen vectors – case study Source: KABS (mosquito monitoring) Download image (118.77 kB) The following contents contain this medium: GE-I-5: …

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    GE-I-4: Ragweed pollen burden

    The illustration GE-I-4 ’Ragweed pollen burden’ contains a biaxial chart. For the years from 2006 to 2021 the lines show the annual mean total of ragweed pollen in pollen per cubic metre air. A differentiation is made between the central, northern, eastern, southern and western regions. In addition, the mean pollen total across all regions is illustrated. A particularly high ragweed pollen burden occurred in 2014 in the northern, eastern and central regions.

    … GE-I-4: Ragweed pollen burden Source: PID (Pollen Traps) Download image (194.45 kB) The following contents contain this medium: GE-I-4: …

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    GE-I-3: Birch pollen burdens

    GE-I-3 ’Birch pollen burdens’ contains a biaxial chart. For the years from 1995 to 2021, the lines show the annual mean total of birch pollen in thousand pollen per cubic metre air. A differentiation is made between the central, northern, eastern, southern and western regions. In addition, the mean pollen total across all regions is illustrated. The curves fluctuate between 2 and 20 thousand pollen per cubic metre air.

    … GE-I-3: Birch pollen burdens Source: PID (Pollen Traps) Download image (223.48 kB) The following contents contain this medium: GE-I-3: Birch …