BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//A3veen.nl - ECPv6.17.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:A3veen.nl
X-ORIGINAL-URL:https://www.a3veen.nl
X-WR-CALDESC:Evenementen voor A3veen.nl
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Amsterdam
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20230326T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20231029T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20240331T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20241027T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20251026T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240701
DTEND;VALUE=DATE:20241001
DTSTAMP:20240722T121718Z
CREATED:20240701T121255Z
LAST-MODIFIED:20240722T121718Z
UID:111122-1719792000-1727740799@www.a3veen.nl
SUMMARY:Nationaal Park Alle Tuinen
DESCRIPTION:Iedere Tuin telt in het nieuwe\, allergrootste natuurpark van Nederland: het ‘Nationaal Park Alle Tuinen’. \nIn Nederland zijn 4\,5 miljoen tuinen waarvan de gezamenlijke oppervlakte meer dan tien keer zo groot is als Het Nationale Park De Hoge Veluwe. Samen vormen onze tuinen het grootste natuurgebied van Nederland: Nationaal Park Alle Tuinen! En dat maakt iedere tuinbezitter tot natuurbeheerder. Hoe staat het met de soortenrijkdom in onze eigen achtertuinen? Samen met het publiek wordt op onderzoek uit gegaan in dit gloednieuwe Nationaal Park: Lukt het om 5.000 verschillende soorten wilde planten en dieren te tellen in de maand juli? In samenwerking met het Kadaster en de gratis app ObsIdentify van Waarneming.nl wordt deze uitdaging aangegaan met een BioBlitz\, een officiële telling. Aanleiding voor het project is de documentaire My Garden of a Thousand Bees van Martin Dohrn\, een wildlife filmmaker uit Bristol. Dohrn besloot tijdens de lockdown in coronatijd zijn apparatuur te gebruiken om het leven van de bijen in zijn achtertuin vast te leggen. Nu had hij eindelijk de tijd om in te zoomen op het insectenleven in eigen tuin. Hij nadert de bijen zo dichtbij en grondig dat hij meer dan dan zestig soorten kan vastleggen en zelfs individuen kan onderscheiden. Hij documenteert hun leven op een niveau zoals nog niet eerder te zien was. Het resultaat\, de bijzondere documentaire ‘My garden of a Thousand Bees’ werd op het wetenschapsfilmfestival InScience 2023 onderscheiden met de NTR Audience Award. \nLinks:\nIedere Tuin telt \nTrailer: Iedere tuin telt!
URL:https://www.a3veen.nl/event/nationaal-park-alle-tuinen/
LOCATION:Nederland\, Nederland
CATEGORIES:Biodiversiteit,Burgerwetenschap,kennis,Natuur
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240708
DTEND;VALUE=DATE:20240709
DTSTAMP:20250708T073843Z
CREATED:20240708T110422Z
LAST-MODIFIED:20250708T073843Z
UID:110410-1720396800-1720483199@www.a3veen.nl
SUMMARY:The late-Quaternary megafauna extinctions: Patterns\, causes\, ecological consequences and implications for ecosystem management in the Anthropocene - publication
DESCRIPTION:The late-Quaternary megafauna extinctions: Patterns\, causes\, ecological consequences and implications for ecosystem management in the Anthropocene. \nAcross the last ~50\,000 years (the late Quaternary) terrestrial vertebrate faunas have experienced severe losses of large species (megafauna)\, with most extinctions occurring in the Late Pleistocene and Early to Middle Holocene. Debate on the causes has been ongoing for over 200 years\, intensifying from the 1960s onward. In the article “The late-Quaternary megafauna extinctions: Patterns\, causes\, ecological consequences and implications for ecosystem management in the Anthropocene“\, the scientist outline criteria that any causal hypothesis needs to account for. Importantly\, this extinction event is unique relative to other Cenozoic (the last 66 million years) extinctions in its strong size bias. For example\, only 11 out of 57 species of megaherbivores (body mass ≥1\,000 kg) survived to the present. In addition to mammalian megafauna\, certain other groups also experienced substantial extinctions\, mainly large non-mammalian vertebrates and smaller but megafauna-associated taxa. Further\, extinction severity and dates varied among continents\, but severely affected all biomes\, from the Arctic to the tropics. \nThe writers of the article synthesise the evidence for and against climatic or modern human (Homo sapiens) causation\, the only existing tenable hypotheses. Their review shows that there is little support for any major influence of climate\, neither in global extinction patterns nor in fine-scale spatiotemporal and mechanistic evidence. Conversely\, there is strong and increasing support for human pressures as the key driver of these extinctions\, with emerging evidence for an initial onset linked to pre-sapiens hominins prior to the Late Pleistocene. Subsequently\, they synthesize the evidence for ecosystem consequences of megafauna extinctions and discuss the implications for conservation and restoration. A broad range of evidence indicates that the megafauna extinctions have elicited profound changes to ecosystem structure and functioning. The late-Quaternary megafauna extinctions thereby represent an early\, large-scale human-driven environmental transformation\, constituting a progenitor of the Anthropocene\, where humans are now a major player in planetary functioning. Finally\, they conclude that megafauna restoration via trophic rewilding can be expected to have positive effects on biodiversity across varied Anthropocene settings. \nLinks:\nMegafauna overleefde ijstijden\, maar niet de speer van de mens
URL:https://www.a3veen.nl/event/the-late-quaternary-megafauna-extinctions-patterns-causes-ecological-consequences-and-implications-for-ecosystem-management-in-the-anthropocene-publication/
CATEGORIES:Biodiversiteit,Natuur
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240726
DTEND;VALUE=DATE:20240727
DTSTAMP:20240726T082813Z
CREATED:20240726T082510Z
LAST-MODIFIED:20240726T082813Z
UID:111270-1721952000-1722038399@www.a3veen.nl
SUMMARY:Day for the Conservation of the Mangrove Ecosystem / Dag voor het Behoud van het Mangrovebos 2024
DESCRIPTION:Mangroves are rare\, spectacular and prolific ecosystems on the boundary between land and sea. \nThese extra ordinary ecosystems contribute to the wellbeing\, food security\, and protection of coastal communities worldwide. They support a rich biodiversity and provide a valuable nursery habitat for fish and crustaceans. Mangroves also act as a form of natural coastal defense against storm surges\, tsunamis\, rising sea levels and erosion. Their soils are highly effective carbon sinks\, sequestering vast amounts of carbon. Yet mangroves are disappearing three to five times faster than overall global forest losses\, with serious ecological and socio-economic impacts. Current estimates indicate that mangrove coverage has been divided by two since the 1980’s. UNESCO is engaged deeply in supporting the conservation of mangroves\, while advancing the sustainable development of their local communities. The inclusion of mangroves in Biosphere Reserves\, World Heritage sites and UNESCO Global Geoparks contributes to improving the knowledge\, management and conservation of mangrove ecosystems throughout the world. The International Day for the Conservation of the Mangrove Ecosystem\, adopted by the General Conference of UNESCO in 2015 and celebrated each year on 26 July\, aims to raise awareness of the importance of mangrove ecosystems as “a unique\, special and vulnerable ecosystem” and to promote solutions for their sustainable management\, conservation and uses. \nLinks:\nDay for the Conservation of the Mangrove Ecosystem \nMessage from Ms Audrey Azoulay\, Director-General of UNESCO\, on the occasion of the International Day for the Conservation of the Mangrove Ecosystem\, 26 July 2024
URL:https://www.a3veen.nl/event/day-for-the-conservation-of-the-mangrove-ecosystem-dag-voor-het-behoud-van-het-mangrovebos-2024/
CATEGORIES:Biodiversiteit,Bossen,Maatschappij,Natuur,UN
END:VEVENT
END:VCALENDAR