Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV
Diatoms are diverse and widespread freshwater Eukaryotes that make excellent microbial subjects for addressing questions in metacommunity ecology. In the McMurdo Dry Valleys of Antarctica, the simple trophic structure of glacier-fed streams provides an ideal outdoor laboratory where well-described d...
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ftfrontimediafig:oai:figshare.com:article/13007843 2023-05-15T14:06:31+02:00 Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV Eric R. Sokol J. E. Barrett Tyler J. Kohler Diane M. McKnight Mark R. Salvatore Lee F. Stanish 2020-09-25T14:38:07Z https://doi.org/10.3389/fevo.2020.521668.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Evaluating_Alternative_Metacommunity_Hypotheses_for_Diatoms_in_the_McMurdo_Dry_Valleys_Using_Simulations_and_Remote_Sensing_Data_CSV/13007843 unknown doi:10.3389/fevo.2020.521668.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Evaluating_Alternative_Metacommunity_Hypotheses_for_Diatoms_in_the_McMurdo_Dry_Valleys_Using_Simulations_and_Remote_Sensing_Data_CSV/13007843 CC BY 4.0 CC-BY Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology Antarctica Bacillariophyceae Nostoc dispersal stream ecology Dataset 2020 ftfrontimediafig https://doi.org/10.3389/fevo.2020.521668.s001 2020-09-30T22:56:43Z Diatoms are diverse and widespread freshwater Eukaryotes that make excellent microbial subjects for addressing questions in metacommunity ecology. In the McMurdo Dry Valleys of Antarctica, the simple trophic structure of glacier-fed streams provides an ideal outdoor laboratory where well-described diatom assemblages are found within two cyanobacterial mat types, which occupy different habitats and vary in coverage within and among streams. Specifically, black mats of Nostoc spp. occur in marginal wetted habitats, and orange mats (Oscillatoria spp. and Phormidium spp.) occur in areas of consistent stream flow. Despite their importance as bioindicators for changing environmental conditions, the role of dispersal in structuring dry valley diatom metacommunities remains unclear. Here, we use MCSim, a spatially explicit metacommunity simulation package for R, to test alternative hypotheses about the roles of dispersal and species sorting in maintaining the biodiversity of diatom assemblages residing in black and orange mats. The spatial distribution and patchiness of cyanobacterial mat habitats was characterized by remote imagery of the Lake Fryxell sub-catchment in Taylor Valley. The available species pool for diatom metacommunity simulation scenarios was informed by the Antarctic Freshwater Diatoms Database, maintained by the McMurdo Dry Valleys Long Term Ecological Research program. We used simulation outcomes to test the plausibility of alternative community assembly hypotheses to explain empirically observed patterns of freshwater diatom biodiversity in the long-term record. The most plausible simulation scenarios suggest species sorting by environmental filters, alone, was not sufficient to maintain biodiversity in the Fryxell Basin diatom metacommunity. The most plausible scenarios included either (1) neutral models with different immigration rates for diatoms in orange and black mats or (2) species sorting by a relatively weak environmental filter, such that dispersal dynamics also influenced diatom community ... Dataset Antarc* Antarctic Antarctica McMurdo Dry Valleys Frontiers: Figshare Antarctic The Antarctic McMurdo Dry Valleys Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology Antarctica Bacillariophyceae Nostoc dispersal stream ecology |
spellingShingle |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology Antarctica Bacillariophyceae Nostoc dispersal stream ecology Eric R. Sokol J. E. Barrett Tyler J. Kohler Diane M. McKnight Mark R. Salvatore Lee F. Stanish Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
topic_facet |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology Antarctica Bacillariophyceae Nostoc dispersal stream ecology |
description |
Diatoms are diverse and widespread freshwater Eukaryotes that make excellent microbial subjects for addressing questions in metacommunity ecology. In the McMurdo Dry Valleys of Antarctica, the simple trophic structure of glacier-fed streams provides an ideal outdoor laboratory where well-described diatom assemblages are found within two cyanobacterial mat types, which occupy different habitats and vary in coverage within and among streams. Specifically, black mats of Nostoc spp. occur in marginal wetted habitats, and orange mats (Oscillatoria spp. and Phormidium spp.) occur in areas of consistent stream flow. Despite their importance as bioindicators for changing environmental conditions, the role of dispersal in structuring dry valley diatom metacommunities remains unclear. Here, we use MCSim, a spatially explicit metacommunity simulation package for R, to test alternative hypotheses about the roles of dispersal and species sorting in maintaining the biodiversity of diatom assemblages residing in black and orange mats. The spatial distribution and patchiness of cyanobacterial mat habitats was characterized by remote imagery of the Lake Fryxell sub-catchment in Taylor Valley. The available species pool for diatom metacommunity simulation scenarios was informed by the Antarctic Freshwater Diatoms Database, maintained by the McMurdo Dry Valleys Long Term Ecological Research program. We used simulation outcomes to test the plausibility of alternative community assembly hypotheses to explain empirically observed patterns of freshwater diatom biodiversity in the long-term record. The most plausible simulation scenarios suggest species sorting by environmental filters, alone, was not sufficient to maintain biodiversity in the Fryxell Basin diatom metacommunity. The most plausible scenarios included either (1) neutral models with different immigration rates for diatoms in orange and black mats or (2) species sorting by a relatively weak environmental filter, such that dispersal dynamics also influenced diatom community ... |
format |
Dataset |
author |
Eric R. Sokol J. E. Barrett Tyler J. Kohler Diane M. McKnight Mark R. Salvatore Lee F. Stanish |
author_facet |
Eric R. Sokol J. E. Barrett Tyler J. Kohler Diane M. McKnight Mark R. Salvatore Lee F. Stanish |
author_sort |
Eric R. Sokol |
title |
Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
title_short |
Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
title_full |
Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
title_fullStr |
Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
title_full_unstemmed |
Data_Sheet_1_Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data.CSV |
title_sort |
data_sheet_1_evaluating alternative metacommunity hypotheses for diatoms in the mcmurdo dry valleys using simulations and remote sensing data.csv |
publishDate |
2020 |
url |
https://doi.org/10.3389/fevo.2020.521668.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Evaluating_Alternative_Metacommunity_Hypotheses_for_Diatoms_in_the_McMurdo_Dry_Valleys_Using_Simulations_and_Remote_Sensing_Data_CSV/13007843 |
long_lat |
ENVELOPE(163.000,163.000,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) |
geographic |
Antarctic The Antarctic McMurdo Dry Valleys Taylor Valley Fryxell Lake Fryxell |
geographic_facet |
Antarctic The Antarctic McMurdo Dry Valleys Taylor Valley Fryxell Lake Fryxell |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
doi:10.3389/fevo.2020.521668.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Evaluating_Alternative_Metacommunity_Hypotheses_for_Diatoms_in_the_McMurdo_Dry_Valleys_Using_Simulations_and_Remote_Sensing_Data_CSV/13007843 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fevo.2020.521668.s001 |
_version_ |
1766278346601136128 |