Changes in the Abundance of Danish Orchids over the Past 30 Years
Orchid abundance data collected over the past 30 years (1987–2016) from 440 sites within the National Orchid Monitoring Program were analyzed to quantify the population trends of orchids in Denmark, and the underlying reasons for the observed population trends were analyzed and discussed. Of the 45...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/12/6/244 |
| _version_ | 1797565296410624000 |
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| author | Christian Damgaard Jesper Erenskjold Moeslund Peter Wind |
| author_facet | Christian Damgaard Jesper Erenskjold Moeslund Peter Wind |
| author_sort | Christian Damgaard |
| collection | DOAJ |
| description | Orchid abundance data collected over the past 30 years (1987–2016) from 440 sites within the National Orchid Monitoring Program were analyzed to quantify the population trends of orchids in Denmark, and the underlying reasons for the observed population trends were analyzed and discussed. Of the 45 monitored Danish orchids, 20 showed a significant decrease in abundance over the past 30 years (16, if only orchids with at least 50 observations each were selected), thus corroborating the previous observations of declining orchid abundances at the European scale. Generally, there was a significant negative effect of overgrowing with tall-growing herbs and shrubs on the abundance of Danish orchids, mainly caused by change of farming practices, as extensive management, such as grazing or mowing of light-open grassland areas, has decreased. |
| first_indexed | 2024-03-10T19:10:06Z |
| format | Article |
| id | doaj.art-57fa8c49c3d0422ab96e69c1bced91a7 |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T19:10:06Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj.art-57fa8c49c3d0422ab96e69c1bced91a72023-11-20T03:53:25ZengMDPI AGDiversity1424-28182020-06-0112624410.3390/d12060244Changes in the Abundance of Danish Orchids over the Past 30 YearsChristian Damgaard0Jesper Erenskjold Moeslund1Peter Wind2Department of Bioscience, Aarhus University, 8600 Silkeborg, DenmarkDepartment of Bioscience, Aarhus University, 8600 Silkeborg, DenmarkDepartment of Bioscience, Aarhus University, 8600 Silkeborg, DenmarkOrchid abundance data collected over the past 30 years (1987–2016) from 440 sites within the National Orchid Monitoring Program were analyzed to quantify the population trends of orchids in Denmark, and the underlying reasons for the observed population trends were analyzed and discussed. Of the 45 monitored Danish orchids, 20 showed a significant decrease in abundance over the past 30 years (16, if only orchids with at least 50 observations each were selected), thus corroborating the previous observations of declining orchid abundances at the European scale. Generally, there was a significant negative effect of overgrowing with tall-growing herbs and shrubs on the abundance of Danish orchids, mainly caused by change of farming practices, as extensive management, such as grazing or mowing of light-open grassland areas, has decreased.https://www.mdpi.com/1424-2818/12/6/244Danish orchid speciesDanish Red ListNational Orchid Monitoring ProgramDanish Orchid Databasecitizen scienceorchid monitoring |
| spellingShingle | Christian Damgaard Jesper Erenskjold Moeslund Peter Wind Changes in the Abundance of Danish Orchids over the Past 30 Years Diversity Danish orchid species Danish Red List National Orchid Monitoring Program Danish Orchid Database citizen science orchid monitoring |
| title | Changes in the Abundance of Danish Orchids over the Past 30 Years |
| title_full | Changes in the Abundance of Danish Orchids over the Past 30 Years |
| title_fullStr | Changes in the Abundance of Danish Orchids over the Past 30 Years |
| title_full_unstemmed | Changes in the Abundance of Danish Orchids over the Past 30 Years |
| title_short | Changes in the Abundance of Danish Orchids over the Past 30 Years |
| title_sort | changes in the abundance of danish orchids over the past 30 years |
| topic | Danish orchid species Danish Red List National Orchid Monitoring Program Danish Orchid Database citizen science orchid monitoring |
| url | https://www.mdpi.com/1424-2818/12/6/244 |
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