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The Holocene history of the diatom community in a small water body on Shemya Island (Aleutian Arc, USA): The influence of global and local environmental changesстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 ноября 2021 г.
- Авторы: Neplyukhina A.A., Tchabovsky A.V., Gololobova M.A., Smyshlyaeva O.I., Krylovich O.A., Savinetsky A.B., Kotov A.A.
- Журнал: Water
- Том: 13
- Год издания: 2021
- Издательство: MDPI Publishing
- Местоположение издательства: Basel, Switzerland, Switzerland
- Первая страница: 1
- Последняя страница: 19
- Номер статьи: 3134
- DOI: 10.3390/w13213134
- Аннотация: A diatom analysis of a peat deposit from Shemya Island (Aleutian Arc, USA) is performed,and the dynamics of the diatom community are described. According to the radiocarbon dating, theformation of the deposit began 9300 cal. years BP. Principal component analysis made it possible torelate the dynamics of the diatom community to certain environmental conditions and the factorsthat influenced the coastal ecosystems during its formation. The following factors (predictors) wereconsidered: the influence of age, zoo- and anthropogenic effects, and changes in climatic conditions.Sea level change was the main driver of the diatom community in the studied water body havinga continuous direct and indirect influence on the studied small water body, i.e., by bird colonyformation and more humid and coastal conditions. Since 3000–2000 cal. years BP, the anthropogenicfactor (hunting depression of the bird colony) also became significant. During the whole waterbody lifetime and following peat formation, the diatom community was influenced by groups offactors: global factors (e.g., sea level rise) caused gradual change of local factors, which resulted insmooth shifts in community. In contrast, local factor influence (bird colony rise and fall due to humanactivity) caused abrupt and transient shifts. We can hypothesize that the relatively stable globalenvironmental conditions in the Late Holocene were an auspicious background to see abrupt changesdue to influence of the zoogenic and anthropogenic factors. We believe that further works on thematerial from other islands will make it possible to form a general picture of changes in the diatomcommunities in the Holocene and interpret it in connection with climatic changes in the region.
- Добавил в систему: Гололобова Мария Александровна