(Table 1) Effects of experimental warming on plant cover and diversity indices in an evergreen shrub at Alexandra Fiord
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2010
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| _version_ | 1867171815545110528 |
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| author | Hudson, James M G Henry, Gregory HR |
| author_facet | Hudson, James M G Henry, Gregory HR |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 1. Identifying plant communities that are resistant to climate change will be critical for developing accurate, wide-scale vegetation change predictions. Most northern plant communities, especially tundra, have shown strong responses to experimental and observed warming. 2. Experimental warming is a key tool for understanding vegetation responses to climate change. We used open-top chambers to passively warm an evergreen-shrub heath by 1.0-1.3 °C for 15 years at Alexandra Fiord, Nunavut, Canada (79 °N). In 1996, 2000 and 2007, we measured height, plant composition and abundance with a point-intercept method. 3. Experimental warming did not strongly affect vascular plant cover, canopy height or species diversity, but it did increase bryophyte cover by 6.3% and decrease lichen cover by 3.5%. Temporal changes in plant cover were more frequent and of greater magnitude than changes due to experimental warming. 4. Synthesis. This evergreen-shrub heath continues to exhibit community-level resistance to long-term experimental warming, in contrast to most Arctic plant communities. Our findings support the view that only substantial climatic changes will alter unproductive ecosystems. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_811359 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Effects of experimental warming on plant cover and diversity indices in an evergreen shrub at Alexandra Fiord Hudson, James M G Henry, Gregory HR Alexandra_Fiord_sites; Bryophyta; DATE/TIME; Dissimilarity, standard deviation; Dissimilarity index; Ellesmere Island, Canadian Arctic Archipelago; Evenness of species; Forbs; Grass and sedges; HAND; Height; International Polar Year (2007-2008); IPY; Lichen; Open-top chamber (OTC) warming experiment, in situ; Sampling by hand; Shannon Diversity Index; Shrubs; Simpson index of diversity; Species richness; Standard deviation; Treatment 1. Identifying plant communities that are resistant to climate change will be critical for developing accurate, wide-scale vegetation change predictions. Most northern plant communities, especially tundra, have shown strong responses to experimental and observed warming. 2. Experimental warming is a key tool for understanding vegetation responses to climate change. We used open-top chambers to passively warm an evergreen-shrub heath by 1.0-1.3 °C for 15 years at Alexandra Fiord, Nunavut, Canada (79 °N). In 1996, 2000 and 2007, we measured height, plant composition and abundance with a point-intercept method. 3. Experimental warming did not strongly affect vascular plant cover, canopy height or species diversity, but it did increase bryophyte cover by 6.3% and decrease lichen cover by 3.5%. Temporal changes in plant cover were more frequent and of greater magnitude than changes due to experimental warming. 4. Synthesis. This evergreen-shrub heath continues to exhibit community-level resistance to long-term experimental warming, in contrast to most Arctic plant communities. Our findings support the view that only substantial climatic changes will alter unproductive ecosystems. |
| title | (Table 1) Effects of experimental warming on plant cover and diversity indices in an evergreen shrub at Alexandra Fiord |
| topic | Alexandra_Fiord_sites; Bryophyta; DATE/TIME; Dissimilarity, standard deviation; Dissimilarity index; Ellesmere Island, Canadian Arctic Archipelago; Evenness of species; Forbs; Grass and sedges; HAND; Height; International Polar Year (2007-2008); IPY; Lichen; Open-top chamber (OTC) warming experiment, in situ; Sampling by hand; Shannon Diversity Index; Shrubs; Simpson index of diversity; Species richness; Standard deviation; Treatment |
| url | https://doi.org/10.1594/PANGAEA.811359 |