{"dp_type": "Dataset", "free_text": "Soil Invertebrates"}
[{"awards": "1932876 Ball, Becky", "bounds_geometry": ["POLYGON((-58.999374 -62.18186,-58.965558 -62.18186,-58.931742 -62.18186,-58.897926000000005 -62.18186,-58.864110000000004 -62.18186,-58.830294 -62.18186,-58.796478 -62.18186,-58.762662 -62.18186,-58.728846000000004 -62.18186,-58.69503 -62.18186,-58.661214 -62.18186,-58.661214 -62.1881765,-58.661214 -62.194493,-58.661214 -62.2008095,-58.661214 -62.207126,-58.661214 -62.2134425,-58.661214 -62.219758999999996,-58.661214 -62.2260755,-58.661214 -62.232392,-58.661214 -62.2387085,-58.661214 -62.245025,-58.69503 -62.245025,-58.728846000000004 -62.245025,-58.762662 -62.245025,-58.796478 -62.245025,-58.830294 -62.245025,-58.864110000000004 -62.245025,-58.897926000000005 -62.245025,-58.931742 -62.245025,-58.965558 -62.245025,-58.999374 -62.245025,-58.999374 -62.2387085,-58.999374 -62.232392,-58.999374 -62.2260755,-58.999374 -62.219758999999996,-58.999374 -62.2134425,-58.999374 -62.207126,-58.999374 -62.2008095,-58.999374 -62.194493,-58.999374 -62.1881765,-58.999374 -62.18186))"], "date_created": "Tue, 20 Jan 2026 00:00:00 GMT", "description": "A consequence of rapid warming on the Antarctic Peninsula is the melting and subsequent retreat of glaciers, leading to an increase in newly-exposed land on the Peninsula that was previously covered with ice. The process of ecological succession on this new terrain begins, but the mechanisms by which they occur on the Antarctic continent is not well understood. Once early colonizing plants have established on the newly-exposed soil, they can change many important properties, such as water dynamics, nutrient recycling, soil development, and habitat for microscopic organisms, which will ultimately determine the structure and functioning of the future ecosystem as it develops. This project makes a comprehensive study of how the type of colonizing plant, and the expansion of those plants from climate change, will influence terrestrial ecosystems in Antarctica. This project uses surveys across succession sites on King George Island to test how species-specific plant functional traits impact soil properties and associated microbial and invertebrate communities in a greening Antarctica. We measured the relative effects of fundamental plant functional traits on soil physicochemical and biological (both microbial and invertebrate) properties across glacial succession gradients in Antarctica. In doing so, we explore how early-colonizing plants, especially mosses and lichens, alter soil physical, biogeochemical, and biological components.", "east": -58.661214, "geometry": ["POINT(-58.830294 -62.2134425)"], "keywords": "25 De Mayo/King George Island; Antarctica; Biota; Cryosphere; Ecological Succession; Microarthropods; Soil Biogeochemistry; Soil Invertebrates; Soil Microbiome", "locations": "25 De Mayo/King George Island; Antarctica", "north": -62.18186, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Ball, Becky", "project_titles": "Collaborative Research: Exploring the Functional Role of Antarctic Plants during Terrestrial Succession", "projects": [{"proj_uid": "p0010315", "repository": "USAP-DC", "title": "Collaborative Research: Exploring the Functional Role of Antarctic Plants during Terrestrial Succession"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -62.245025, "title": "Exploring the Functional Role of Antarctic Plants during Terrestrial Succession: Fine-Scale Survey", "uid": "602015", "west": -58.999374}, {"awards": "2044924 Barrett, John", "bounds_geometry": ["POLYGON((161.70776367188 -77.519802097166,161.899475097661 -77.519802097166,162.091186523442 -77.519802097166,162.282897949223 -77.519802097166,162.474609375004 -77.519802097166,162.666320800785 -77.519802097166,162.858032226566 -77.519802097166,163.049743652347 -77.519802097166,163.241455078128 -77.519802097166,163.433166503909 -77.519802097166,163.62487792969 -77.519802097166,163.62487792969 -77.54867059480199,163.62487792969 -77.57753909243799,163.62487792969 -77.606407590074,163.62487792969 -77.63527608771,163.62487792969 -77.664144585346,163.62487792969 -77.69301308298199,163.62487792969 -77.72188158061799,163.62487792969 -77.750750078254,163.62487792969 -77.77961857589,163.62487792969 -77.808487073526,163.433166503909 -77.808487073526,163.241455078128 -77.808487073526,163.049743652347 -77.808487073526,162.858032226566 -77.808487073526,162.666320800785 -77.808487073526,162.474609375004 -77.808487073526,162.282897949223 -77.808487073526,162.091186523442 -77.808487073526,161.899475097661 -77.808487073526,161.70776367188 -77.808487073526,161.70776367188 -77.77961857589,161.70776367188 -77.750750078254,161.70776367188 -77.72188158061799,161.70776367188 -77.69301308298199,161.70776367188 -77.664144585346,161.70776367188 -77.63527608771,161.70776367188 -77.606407590074,161.70776367188 -77.57753909243799,161.70776367188 -77.54867059480199,161.70776367188 -77.519802097166))"], "date_created": "Wed, 03 Apr 2024 00:00:00 GMT", "description": "Microbial communities are the primary drivers of carbon cycling in the McMurdo Dry Valleys of Antarctica. Dense microbial mats, consisting mainly of photosynthetic cyanobacteria, occupy aquatic areas associated with streams and lakes. Other microbial communities also occur at lower densities as patchy surface biological soil crusts (biocrusts) across the terrestrial landscape. Multispectral satellite data have been used to model microbial mat abundance in high-density areas like stream and lake margins, but no previous studies had investigated the lower detection limits of biocrusts. Here, we describe remote sensing and field-based survey and sampling approaches to study the detectability and distribution of biocrusts in the McMurdo Dry Valleys. Using a combination of multi- and hyperspectral tools and spectral linear unmixing, we modeled the abundances of biocrust in eastern Taylor Valley. Our spectral approaches can detect low masses of biocrust material in laboratory microcosms down to biocrust concentrations of 1% by mass. These techniques also distinguish the spectra of biocrust from both surface rock and mineral signatures from orbit. We found that biocrusts are present throughout the soils of eastern Taylor Valley and are associated with diverse underlying soil communities. The densest biocrust communities identified in this study had total organic carbon 5x greater than the content of typical arid soils. The most productive biocrusts were located downslope of melting snowpacks in unique soil ecosystems that are distinct from the surrounding arid landscape. There are similarities between the snowpack and stream sediment communities (high diversity of soil invertebrates) as well as their ecosystem properties (e.g., persistence of liquid water, high transfer of available nutrients, lower salinity from flushing) compared to the typical arid terrestrial ecosystem of the dry valleys. Our approach extends the capability of orbital remote sensing of photosynthetic communities out of the aquatic margins and into the drier soils which comprise most of this landscape. This interdisciplinary work is critical for measuring and monitoring terrestrial carbon stocks and predicting future ecosystem dynamics in this currently water-limited but increasingly dynamic Antarctic landscape, which is particularly climate-sensitive and difficult to access.\r\n", "east": 163.62487792969, "geometry": ["POINT(162.666320800785 -77.664144585346)"], "keywords": "Antarctica; Carbon; Cryosphere; McMurdo Dry Valleys; Snow", "locations": "McMurdo Dry Valleys; Antarctica", "north": -77.519802097166, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Barrett, John", "project_titles": null, "projects": null, "repositories": null, "science_programs": null, "south": -77.808487073526, "title": "Hyperspectral reflectance values and biophysicochemical properties of biocrusts and soils in the Fryxell Basin, McMurdo Dry Valleys, Antarctica", "uid": "601773", "west": 161.70776367188}]
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| Dataset Title/Abstract/Map | NSF Award(s) | Date Created | PIs / Scientists | Project Links | Abstract | Bounds Geometry | Geometry | Selected | Visible |
|---|---|---|---|---|---|---|---|---|---|
|
Exploring the Functional Role of Antarctic Plants during Terrestrial Succession: Fine-Scale Survey
|
1932876 |
2026-01-20 | Ball, Becky |
Collaborative Research: Exploring the Functional Role of Antarctic Plants during Terrestrial Succession |
A consequence of rapid warming on the Antarctic Peninsula is the melting and subsequent retreat of glaciers, leading to an increase in newly-exposed land on the Peninsula that was previously covered with ice. The process of ecological succession on this new terrain begins, but the mechanisms by which they occur on the Antarctic continent is not well understood. Once early colonizing plants have established on the newly-exposed soil, they can change many important properties, such as water dynamics, nutrient recycling, soil development, and habitat for microscopic organisms, which will ultimately determine the structure and functioning of the future ecosystem as it develops. This project makes a comprehensive study of how the type of colonizing plant, and the expansion of those plants from climate change, will influence terrestrial ecosystems in Antarctica. This project uses surveys across succession sites on King George Island to test how species-specific plant functional traits impact soil properties and associated microbial and invertebrate communities in a greening Antarctica. We measured the relative effects of fundamental plant functional traits on soil physicochemical and biological (both microbial and invertebrate) properties across glacial succession gradients in Antarctica. In doing so, we explore how early-colonizing plants, especially mosses and lichens, alter soil physical, biogeochemical, and biological components. | ["POLYGON((-58.999374 -62.18186,-58.965558 -62.18186,-58.931742 -62.18186,-58.897926000000005 -62.18186,-58.864110000000004 -62.18186,-58.830294 -62.18186,-58.796478 -62.18186,-58.762662 -62.18186,-58.728846000000004 -62.18186,-58.69503 -62.18186,-58.661214 -62.18186,-58.661214 -62.1881765,-58.661214 -62.194493,-58.661214 -62.2008095,-58.661214 -62.207126,-58.661214 -62.2134425,-58.661214 -62.219758999999996,-58.661214 -62.2260755,-58.661214 -62.232392,-58.661214 -62.2387085,-58.661214 -62.245025,-58.69503 -62.245025,-58.728846000000004 -62.245025,-58.762662 -62.245025,-58.796478 -62.245025,-58.830294 -62.245025,-58.864110000000004 -62.245025,-58.897926000000005 -62.245025,-58.931742 -62.245025,-58.965558 -62.245025,-58.999374 -62.245025,-58.999374 -62.2387085,-58.999374 -62.232392,-58.999374 -62.2260755,-58.999374 -62.219758999999996,-58.999374 -62.2134425,-58.999374 -62.207126,-58.999374 -62.2008095,-58.999374 -62.194493,-58.999374 -62.1881765,-58.999374 -62.18186))"] | ["POINT(-58.830294 -62.2134425)"] | false | false |
|
Hyperspectral reflectance values and biophysicochemical properties of biocrusts and soils in the Fryxell Basin, McMurdo Dry Valleys, Antarctica
|
2044924 |
2024-04-03 | Barrett, John | No project link provided | Microbial communities are the primary drivers of carbon cycling in the McMurdo Dry Valleys of Antarctica. Dense microbial mats, consisting mainly of photosynthetic cyanobacteria, occupy aquatic areas associated with streams and lakes. Other microbial communities also occur at lower densities as patchy surface biological soil crusts (biocrusts) across the terrestrial landscape. Multispectral satellite data have been used to model microbial mat abundance in high-density areas like stream and lake margins, but no previous studies had investigated the lower detection limits of biocrusts. Here, we describe remote sensing and field-based survey and sampling approaches to study the detectability and distribution of biocrusts in the McMurdo Dry Valleys. Using a combination of multi- and hyperspectral tools and spectral linear unmixing, we modeled the abundances of biocrust in eastern Taylor Valley. Our spectral approaches can detect low masses of biocrust material in laboratory microcosms down to biocrust concentrations of 1% by mass. These techniques also distinguish the spectra of biocrust from both surface rock and mineral signatures from orbit. We found that biocrusts are present throughout the soils of eastern Taylor Valley and are associated with diverse underlying soil communities. The densest biocrust communities identified in this study had total organic carbon 5x greater than the content of typical arid soils. The most productive biocrusts were located downslope of melting snowpacks in unique soil ecosystems that are distinct from the surrounding arid landscape. There are similarities between the snowpack and stream sediment communities (high diversity of soil invertebrates) as well as their ecosystem properties (e.g., persistence of liquid water, high transfer of available nutrients, lower salinity from flushing) compared to the typical arid terrestrial ecosystem of the dry valleys. Our approach extends the capability of orbital remote sensing of photosynthetic communities out of the aquatic margins and into the drier soils which comprise most of this landscape. This interdisciplinary work is critical for measuring and monitoring terrestrial carbon stocks and predicting future ecosystem dynamics in this currently water-limited but increasingly dynamic Antarctic landscape, which is particularly climate-sensitive and difficult to access. | ["POLYGON((161.70776367188 -77.519802097166,161.899475097661 -77.519802097166,162.091186523442 -77.519802097166,162.282897949223 -77.519802097166,162.474609375004 -77.519802097166,162.666320800785 -77.519802097166,162.858032226566 -77.519802097166,163.049743652347 -77.519802097166,163.241455078128 -77.519802097166,163.433166503909 -77.519802097166,163.62487792969 -77.519802097166,163.62487792969 -77.54867059480199,163.62487792969 -77.57753909243799,163.62487792969 -77.606407590074,163.62487792969 -77.63527608771,163.62487792969 -77.664144585346,163.62487792969 -77.69301308298199,163.62487792969 -77.72188158061799,163.62487792969 -77.750750078254,163.62487792969 -77.77961857589,163.62487792969 -77.808487073526,163.433166503909 -77.808487073526,163.241455078128 -77.808487073526,163.049743652347 -77.808487073526,162.858032226566 -77.808487073526,162.666320800785 -77.808487073526,162.474609375004 -77.808487073526,162.282897949223 -77.808487073526,162.091186523442 -77.808487073526,161.899475097661 -77.808487073526,161.70776367188 -77.808487073526,161.70776367188 -77.77961857589,161.70776367188 -77.750750078254,161.70776367188 -77.72188158061799,161.70776367188 -77.69301308298199,161.70776367188 -77.664144585346,161.70776367188 -77.63527608771,161.70776367188 -77.606407590074,161.70776367188 -77.57753909243799,161.70776367188 -77.54867059480199,161.70776367188 -77.519802097166))"] | ["POINT(162.666320800785 -77.664144585346)"] | false | false |
