The aim of the study is to characterise herbaceous vegetation (meadows and ruderal communities) remaining after several decades of protection and compare it to the vegetation of currently managed local sites in the Central Forest Reserve, Tver Oblast, Russia. Cluster analysis of the communities was based on 209 relevés, while their ecological features were analysed using phytoindication assessment. The analyses revealed four types of herbaceous communities: managed mesic meadows, abandoned mesic meadows, tall-herb meadowsweet communities and ruderal tall-herb communities. These four types differ in management, floristic composition and ecological conditions as well as in coenotic and functional group shares (including forbs, graminoids and woody species). The occurrence of these species groups determines the current state of the herbaceous communities. Our study revealed that mesic meadows have retained all the key meadow features for more than 25 years without any management, although their area has shrunk and shares of coenotic and functional groups have changed. The observed herbaceous communities encompass around 40% of the reserve flora including four red list species and 16 alien species.
The "Flora of Russia" project on iNaturalist brought together professional scientists and amateur naturalists from all over the country. Over 10,000 people were involved in the data collection.
Within 20 months, the participants accumulated 750,143 photo observations of 6,857 species of the Russian flora. This constitutes the largest dataset of open spatial data on the country’s biodiversity and a leading source of data on the current state of the national flora. About 87% of all project data, i.e. 652,285 observations, are available under free licences (CC0, CC-BY, CC-BY-NC) and can be freely used in scientific, educational and environmental activities.
The "Flora of Russia" project on iNaturalist brought together professional scientists and amateur naturalists from all over the country. Over 10,000 people are involved in the data collection.
Within 20 months the participants accumulated over 750,000 photo observations of 6,853 species of the Russian flora. This constitutes the largest dataset of open spatial data on the country’s biodiversity and a leading source of data on the current state of the national flora. About 85% of all project data are available under free licenses (CC0, CC-BY, CC-BY-NC) and can be freely used in scientific, educational and environmental activities.
Аннотация. Изучено синтаксономическое разнообразие фитоценозов с доминированием вейника наземного и их связь с травяными палами в охранной зоне Полистовского заповедника. В основу работы положены 243 геоботанических описания, выполненных в 2012, 2014 и 2018 годах. Из них для классификации растительности были выбраны 47 описаний, в которых проективное покрытие вейника наземного превышало 25%. В результате классификации методом Ж. Браун-Бланке установлены 5 ассоциаций и 6 вариантов, относящихся к 5 союзам, 4 порядкам и 3 классам (Artemisietea vulgaris, Epilobietea angustifolii, Molinio-Arrhenatheretea). Для выявления частоты травяных палов были использованы дистанционные данные (65 сцен Landsat, а также, термоточки системы мониторинга FIRMS). Данные о выявленных пожарах по годам были соотнесены с имеющимися 243 геоботаническими описаниями. В результате корреляционного анализа показана положительная связь обилия вейника наземного с частотой травяных палов.Ключевые слова: травяная растительность, синтаксономия, деградация лугов, сообщества вейника наземного, Calamagrostis epigeios, травяные палы.
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