Minister Schouten heeft in mei 2019 vier scenario's geschetst voor de nationale invulling van het Gemeenschappelijke Landbouwbeleid (GLB) na 2020. Kamerlid Bisschop heeft gevraagd om een vijfde scenario op te stellen, en de gevolgen van de verschillende scenario's voor het inkomen uit bedrijf en de economische vitaliteit van landbouwbedrijven in kaart te laten brengen. Dit rapport geeft een doorrekening op hoofdlijnen van de scenario's voor het inkomen uit bedrijf en een analyse van de gevolgen voor de economische vitaliteit van landbouwbedrijven. De laatste is mede gebaseerd op een analyse van de wijze waarop bedrijven in de huidige implementatieperiode van het GLB (2014-2020) zijn omgegaan met veranderingen in de toeslagen. Trefwoorden: hervorming, GLB, inkomen, land-en tuinbouw Dit rapport is gratis te downloaden op https://doi.org/10.18174/505353 of op www.wur.nl/economicresearch (onder Wageningen Economic Research publicaties).
Minimum sample size for kernel based home-range calculation in the Three-toed Woodpecker (Picoides tridactylus )We developed a statistical model to determine the minimum sample size for kernel-based home-ranges in the Three-toed Woodpecker (Picoides tridactylus). Between April and August 1998, 842 biologically independent observations of eight radio-tracked Three-toed Woodpeckers were made in Berchtesgaden National Park. Processing the resultant data with the telemetry-software Ranges V, we calculated individual home-ranges based on 95 % utilisation distribution for three biological periods (pre-nesting, nesting, post-nesting). We ascertained the minimum sample size for the kernel estimation developing a statistical trend model. The results showed that in the case of the Three-toed Woodpecker home-range estimations by the adaptive kernel method can be considered reliable presupposing a minimum sample size of 30 independent observations distributed evenly throughout a given period.
Summary Minimum sample size for kernel based home‐range calculation in the Three‐toed Woodpecker (Picoides tridactylus) We developed a statistical model to determine the minimum sample size for kernel‐based home‐ranges in the Three‐toed Woodpecker (Picoides tridactylus). Between April and August 1998, 842 biologically independent observations of eight radio‐tracked Three‐toed Woodpeckers were made in Berchtesgaden National Park. Processing the resultant data with the telemetry‐software Ranges V, we calculated individual home‐ranges based on 95 % utilisation distribution for three biological periods (pre‐nesting, nesting, post‐nesting). We ascertained the minimum sample size for the kernel estimation developing a statistical trend model. The results showed that in the case of the Three‐toed Woodpecker home‐range estimations by the adaptive kernel method can be considered reliable presupposing a minimum sample size of 30 independent observations distributed evenly throughout a given period.
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