Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene?
In the Aleutian Islands during the Holocene, terrestrial predators were actually absent; as a result, large seabird colonies thrived along the coasts or across entire islands. Bird guano enriches the soil with nitrogen, which can lead to the formation of highly modified ornithogenic (bird-formed) ec...
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ftzenodo:oai:zenodo.org:7076197 2023-05-15T13:14:47+02:00 Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? Smyshlyaeva, Olesya Severova, Elena Krylovich, Olga Kuzmicheva, Evgeniya Savinetsky, Arkady West, Dixie Hatfield, Virginia 2022-09-13 https://zenodo.org/record/7076197 https://doi.org/10.5061/dryad.0rxwdbs1f unknown doi:10.5281/zenodo.5499830 https://zenodo.org/communities/dryad https://zenodo.org/record/7076197 https://doi.org/10.5061/dryad.0rxwdbs1f oai:zenodo.org:7076197 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.5061/dryad.0rxwdbs1f10.5281/zenodo.5499830 2023-03-10T19:04:17Z In the Aleutian Islands during the Holocene, terrestrial predators were actually absent; as a result, large seabird colonies thrived along the coasts or across entire islands. Bird guano enriches the soil with nitrogen, which can lead to the formation of highly modified ornithogenic (bird-formed) ecosystems. For a more detailed investigation of avian influence, we reconstructed more than 10,000-year-old vegetation dynamics of the coast of Shemya Island (Near Islands) by pollen analysis. At the initial stages of vegetation development (10,000-4,600 cal yr BP), sedge-heather tundra grew in the studied area. A seabird colony existed on Shemya from 4,600 to 2,400 cal yr BP according to stable isotope analysis. During a period of at least 2,200-years nitrogen enrichment led to the development of ornithogenic herb meadows with a high presence of Apiaceae. A long-term increase in δ15N above 9-10‰ led to radical shifts in vegetation. Noticeable reduction of seabird colonies due to human hunting led to grass-meadows spreading. After a prolonged decrease δ15N below 9-10‰ (2,400 cal yr BP to present), there was a shift towards less productive sedge-tundra communities. However, the significant enrichment of guano affected only the coastal vegetation and did not alter the inland Shemya Island. This zip directory contains raw pollen cound data, pollen concentration data, description of samples, , and isotopic (13C, 15N) + LOI data: mcdonald_data.zip In file 'McDonald Point (Shemya Aleutian Islands) isotopes LOI Pollen Influx.xlsx' missing values are marked with N / A. This zip directory contains complete pollen percentage and concentration diagrams in tiff format as figure: mcdonald_figures.zip Funding provided by: Russian Foundation for Basic ResearchCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100002261Award Number: 19-34-90071Funding provided by: National Geographic SocietyCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100002261Award Number: 4943-92Funding provided by: National Geographic ... Dataset Aleutian Island Tundra Aleutian Islands Zenodo Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Near Islands ENVELOPE(173.132,173.132,52.801,52.801) Shemya Island ENVELOPE(174.119,174.119,52.724,52.724) McDonald Point ENVELOPE(59.666,59.666,-67.341,-67.341) |
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In the Aleutian Islands during the Holocene, terrestrial predators were actually absent; as a result, large seabird colonies thrived along the coasts or across entire islands. Bird guano enriches the soil with nitrogen, which can lead to the formation of highly modified ornithogenic (bird-formed) ecosystems. For a more detailed investigation of avian influence, we reconstructed more than 10,000-year-old vegetation dynamics of the coast of Shemya Island (Near Islands) by pollen analysis. At the initial stages of vegetation development (10,000-4,600 cal yr BP), sedge-heather tundra grew in the studied area. A seabird colony existed on Shemya from 4,600 to 2,400 cal yr BP according to stable isotope analysis. During a period of at least 2,200-years nitrogen enrichment led to the development of ornithogenic herb meadows with a high presence of Apiaceae. A long-term increase in δ15N above 9-10‰ led to radical shifts in vegetation. Noticeable reduction of seabird colonies due to human hunting led to grass-meadows spreading. After a prolonged decrease δ15N below 9-10‰ (2,400 cal yr BP to present), there was a shift towards less productive sedge-tundra communities. However, the significant enrichment of guano affected only the coastal vegetation and did not alter the inland Shemya Island. This zip directory contains raw pollen cound data, pollen concentration data, description of samples, , and isotopic (13C, 15N) + LOI data: mcdonald_data.zip In file 'McDonald Point (Shemya Aleutian Islands) isotopes LOI Pollen Influx.xlsx' missing values are marked with N / A. This zip directory contains complete pollen percentage and concentration diagrams in tiff format as figure: mcdonald_figures.zip Funding provided by: Russian Foundation for Basic ResearchCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100002261Award Number: 19-34-90071Funding provided by: National Geographic SocietyCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100002261Award Number: 4943-92Funding provided by: National Geographic ... |
format |
Dataset |
author |
Smyshlyaeva, Olesya Severova, Elena Krylovich, Olga Kuzmicheva, Evgeniya Savinetsky, Arkady West, Dixie Hatfield, Virginia |
spellingShingle |
Smyshlyaeva, Olesya Severova, Elena Krylovich, Olga Kuzmicheva, Evgeniya Savinetsky, Arkady West, Dixie Hatfield, Virginia Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
author_facet |
Smyshlyaeva, Olesya Severova, Elena Krylovich, Olga Kuzmicheva, Evgeniya Savinetsky, Arkady West, Dixie Hatfield, Virginia |
author_sort |
Smyshlyaeva, Olesya |
title |
Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
title_short |
Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
title_full |
Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
title_fullStr |
Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
title_full_unstemmed |
Data from: Ornithogenic vegetation: How significant has the seabird influence been on the Aleutian Island vegetation during the Holocene? |
title_sort |
data from: ornithogenic vegetation: how significant has the seabird influence been on the aleutian island vegetation during the holocene? |
publishDate |
2022 |
url |
https://zenodo.org/record/7076197 https://doi.org/10.5061/dryad.0rxwdbs1f |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(173.132,173.132,52.801,52.801) ENVELOPE(174.119,174.119,52.724,52.724) ENVELOPE(59.666,59.666,-67.341,-67.341) |
geographic |
Guano Near Islands Shemya Island McDonald Point |
geographic_facet |
Guano Near Islands Shemya Island McDonald Point |
genre |
Aleutian Island Tundra Aleutian Islands |
genre_facet |
Aleutian Island Tundra Aleutian Islands |
op_relation |
doi:10.5281/zenodo.5499830 https://zenodo.org/communities/dryad https://zenodo.org/record/7076197 https://doi.org/10.5061/dryad.0rxwdbs1f oai:zenodo.org:7076197 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.0rxwdbs1f10.5281/zenodo.5499830 |
_version_ |
1766265412834557952 |