Ondersteuningsproject bij de uitvoering van de reemonitoring in het Zoniënwoud. Jaarlijks rapport - Referentieperiode: 2008 - 2023

Research output: Book/ReportReports of Research Institute for Nature and Forest

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After the decline in the average kilometre index we observed in 2014, 2015 and 2016, the population seemed to stabilise at a lower level. While the average KI hovered around 1 roe/km from 2008 to 2013, the index never exceeded 0.75 since 2014. Since 2017, the KI dropped below 0.6. Even the value for 2021, with an average of 0.5, is again on the low side compared to the figures since 2014, so the decline still seems to be continuing. In 2016, we cited that the declining figures may indicate a decline in the roe deer population in the Sonian Forest.
Since there is no evidence that the detection probability has decreased, especially in the period 2015-2021, it seems plausible to assume a declining population of roe deer in the Sonian Forest. A detailed and integrated analysis of sightings, distances and visibility measurements seems appropriate to look for any spatial differences throughout the area.
This information could help identify the causes of the decline so that measures can be tested to halt and, if possible, reverse it.
Original languageDutch
PublisherInstituut voor Natuur- en Bosonderzoek
Number of pages27
Publication statusPublished - 2023

Publication series

NameRapporten van het Instituut voor Natuur- en Bosonderzoek

Thematic List 2020

  • Wildlife management

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