Broedvogels in Nederland 2020
https://pecbms.info/report-breeding-birds-in-the-netherlands-2020/
https://pub.sovon.nl/static/publicaties/Rap_2022-05_Brv-in-Nederland-in-2020-kl.pdf
A new breeding bird report looking back at season 2020 in the Netherlands was published this spring. The report summarises the main results of the national All Breeding Bird project, organised by Sovon Vogelonderzoek Nederland in collaboration with Statistics Netherlands. In the long term, 80 species (40%) showed a strong or moderate decrease, and 95 species (48%) showed a strong or moderate increase. The rest of the species remained stable (22; 11%) or had an uncertain trend (Little Gull). In the short term, 55 species decreased (28%), 84 species increased (42%), and the remainder were stable (37 species, 19%) or had an uncertain trend (22 species; 11%, including the ‘extinct’ species: Tawny Pipit, Great Grey Shrike and Ortolan Bunting).
Despite the mild winter, the number of Little Egrets decreased (2019: 67–75, 2020: 50–60), showing that winter weather is not the only determining factor of the trend; breeding success and nesting opportunities will also play a role, as we see, for example, in the Red-backed shrike. Due to the dry summers of recent years, many nests succeeded early in the season. As a result, the young probably fledged at a good weight and had a long time to fatten up before migration, increasing their chances of survival, thus increasing the population size.
Some of the biggest winners in 2020 are relative newcomers to our country. In chronological order: Middle Spotted Woodpecker, Eurasian Eagle Owl, Common Crane, Cetti’s Warbler, White-tailed Eagle, Whiskered Tern and Caspian Gull. These species reached record numbers in 2020, as did Montagu’s Harrier (80 pairs) and Red Kite (20 pairs). There were also positive reports for species that have been nesting in our country for a long time. For example, White Stork continued its long-term increase with around 1200–1300 pairs in 2020. Eurasian Bittern benefits regionally from nature development, and the index value shows an almost annual increase since 2008 (2020: 530–610 pairs). Many species also benefited from the rainfall persisting for several years in the Sahel, such as Savi’s warbler, Yellow Wagtail, Bluethroat, Common Redstart, Sedge Warbler, Marsh Warbler, Eurasian Reed Warbler, Lesser Whitethroat, Common Whitethroat, Purple Heron, Littel Bittern and Wryneck. For the Kestrel, it is likely that the successful year 2020 was due to a good food supply for the young the year before (mice year). Further, there was a rebound in Partridge, but what caused it was less well explained.
https://pecbms.info/report-breeding-birds-in-the-netherlands-2020/
https://pub.sovon.nl/static/publicaties/Rap_2022-05_Brv-in-Nederland-in-2020-kl.pdf
The annual publication “The State of Birds in Switzerland” (in English, French, German and Italian) summarises the results of our various monitoring projects, conducted with the support of more than 2000 volunteers in all parts of the country. The 2022 report focuses on different long-term monitoring schemes. It also describes trends in scarce breeding birds like the Black-winged Kite and rare winter visitors like Great White Egret, and looks at the state of birds in Switzerland compared to other central European countries. You can also explore interactive graphics from the Swiss Bird Index SBI® and the breeding bird index for each species up until 2021.
https://www.vogelwarte.ch/en/projects/population-trends/state-of-birds/
https://www.vogelwarte.ch/en/projects/population-trends/state-of-birds/headlines
Kees verzorgt alweer enige tijd de bijdragen over exotische schimmels in
het digitale tijdschrift 'Kijk op Exoten'. Exoten zijn organismen die
buiten hun oorspronkelijke verspreidingsgebied terecht gekomen zijn. Als
een soort zich in een nieuw gebied handhaaft, noemen we het een exoot,
als dit ten koste gaat van inheemse soorten, spreken we van een
invasieve exoot. Hoe staat het ervoor in Nederland?
Onlangs verscheen er een interessant natuurbericht over dit onderwerp,
wat je hier terug kunt lezen:
https://www.naturetoday.com/intl/nl/nature-reports/message/?msg=29293
De online lezing wordt kosteloos aangeboden door de NMV. Ook niet-leden
zijn welkom om de lezing bij te wonen. Inloggen kan vanaf 19.15 uur via
deze link: https://us06web.zoom.us/j/81758985225#success
Op maandag 23 mei is het de beurt aan Wim Veraghtert, die ons meeneemt
in de bijzondere wereld van de mycofagie in het dierenrijk.
Denk hierbij niet alleen aan zwijnen, muizen of eekhoorns die zich
tegoed doen aan paddenstoelen, maar ook aan kleiner spul, zoals diertjes
die aan de zwamvlok grazen. En welk effect heeft dat? Dit en meer komt
deze avond aan de orde!
De lezing begint om 19.30 uur; inloggen kan vanaf 19.15 uur via deze
link:
https://us06web.zoom.us/j/81651171497#success
Voor meer informatie over het onderwerp van deze lezing, verwijzen we
jullie ook graag naar het volgende Nature today-bericht:
https://www.naturetoday.com/intl/nl/nature-reports/message/?msg=29209
https://us06web.zoom.us/j/82774158428#success
Naar verwachting zal er op 25 mei a.s. een bericht over dit uitgebreide
onderwerp verschijnen op
https://www.naturetoday.com/intl/nl/nature-reports/?month=&publisher=&cat=61
De lezing begint om 19.30 uur; inloggen kan vanaf 19.15 uur via deze
link: https://us06web.zoom.us/j/88527363181
https://www.bioplek.org/techniekkaartenbovenbouw/techniek88waterkwaliteit2.html
Comments
Add a Comment