Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1
Increases in shrub growth and canopy cover are well documented community responses to climate warming in the Arctic. An important consequence of larger deciduous shrubs is shading of prostrate plant species, many of which are important sources of nectar and berries. Here, we present the impact of a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Canadian Science Publishing
2022-09-01
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| Series: | Arctic Science |
| Subjects: | |
| Online Access: | https://cdnsciencepub.com/doi/10.1139/as-2020-0043 |
| _version_ | 1811182334730305536 |
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| author | Jeremy L. May Steven F. Oberbauer Steven L. Unger Matthew J. Simon Katlyn R. Betway Robert D. Hollister |
| author_facet | Jeremy L. May Steven F. Oberbauer Steven L. Unger Matthew J. Simon Katlyn R. Betway Robert D. Hollister |
| author_sort | Jeremy L. May |
| collection | DOAJ |
| description | Increases in shrub growth and canopy cover are well documented community responses to climate warming in the Arctic. An important consequence of larger deciduous shrubs is shading of prostrate plant species, many of which are important sources of nectar and berries. Here, we present the impact of a shading experiment on two prostrate shrubs, Vaccinium vitis-idaea L. and Arctous alpina L., in northern Alaska over two growing seasons. We implemented three levels of shading (no shade, 40% shade, and 80% shade) in dry heath and moist acidic tundra. Plots were monitored for soil moisture content, surface temperature, normalized difference vegetation index (NDVI), and flowering. Shading was shown to, on average, lower surface temperature (0.7 °C to 5.3 °C) and increase soil moisture content (0.5% to 5.6%) in both communities. Both species- and plot-level NDVI values were delayed in timing of peak values (7 to 13 days) and decreased at the highest shading. Flower abundance of both species was lower in shaded plots and peak flowering was delayed (3 to 8 days) compared with controls. Changes in timing may result in phenological mismatches and can impact other trophic levels in the Arctic as both the flowers and resulting berries are important food sources for animals. |
| first_indexed | 2024-04-11T09:30:47Z |
| format | Article |
| id | doaj.art-026b37a03e5847d4a755972f52ab3642 |
| institution | Directory Open Access Journal |
| issn | 2368-7460 |
| language | English |
| last_indexed | 2024-04-11T09:30:47Z |
| publishDate | 2022-09-01 |
| publisher | Canadian Science Publishing |
| record_format | Article |
| series | Arctic Science |
| spelling | doaj.art-026b37a03e5847d4a755972f52ab36422022-12-22T04:31:53ZengCanadian Science PublishingArctic Science2368-74602022-09-018396797810.1139/as-2020-0043Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1Jeremy L. May0Steven F. Oberbauer1Steven L. Unger2Matthew J. Simon3Katlyn R. Betway4Robert D. Hollister5Department of Biological Sciences and Institute of the Environment, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA.Department of Biological Sciences and Institute of the Environment, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA.Department of Biological Sciences and Institute of the Environment, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA.Department of Biological Sciences and Institute of the Environment, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA.Department of Biological Sciences, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA.Department of Biological Sciences, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA.Increases in shrub growth and canopy cover are well documented community responses to climate warming in the Arctic. An important consequence of larger deciduous shrubs is shading of prostrate plant species, many of which are important sources of nectar and berries. Here, we present the impact of a shading experiment on two prostrate shrubs, Vaccinium vitis-idaea L. and Arctous alpina L., in northern Alaska over two growing seasons. We implemented three levels of shading (no shade, 40% shade, and 80% shade) in dry heath and moist acidic tundra. Plots were monitored for soil moisture content, surface temperature, normalized difference vegetation index (NDVI), and flowering. Shading was shown to, on average, lower surface temperature (0.7 °C to 5.3 °C) and increase soil moisture content (0.5% to 5.6%) in both communities. Both species- and plot-level NDVI values were delayed in timing of peak values (7 to 13 days) and decreased at the highest shading. Flower abundance of both species was lower in shaded plots and peak flowering was delayed (3 to 8 days) compared with controls. Changes in timing may result in phenological mismatches and can impact other trophic levels in the Arctic as both the flowers and resulting berries are important food sources for animals.https://cdnsciencepub.com/doi/10.1139/as-2020-0043bearberrylingonberryphenologyclimate changeVaccinium vitis-idaeaArctous alpina |
| spellingShingle | Jeremy L. May Steven F. Oberbauer Steven L. Unger Matthew J. Simon Katlyn R. Betway Robert D. Hollister Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 Arctic Science bearberry lingonberry phenology climate change Vaccinium vitis-idaea Arctous alpina |
| title | Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 |
| title_full | Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 |
| title_fullStr | Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 |
| title_full_unstemmed | Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 |
| title_short | Shading decreases and delays NDVI and flowering of prostrate Arctic shrubs1 |
| title_sort | shading decreases and delays ndvi and flowering of prostrate arctic shrubs1 |
| topic | bearberry lingonberry phenology climate change Vaccinium vitis-idaea Arctous alpina |
| url | https://cdnsciencepub.com/doi/10.1139/as-2020-0043 |
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