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Use of auto‐germ to model germination timing in the sagebrush‐steppe

Germination timing has a strong influence on direct seeding efforts, and therefore is a closely tracked demographic stage in a wide variety of wildland and agricultural settings. Predictive seed germination models, based on soil moisture and temperature data in the seed zone are an efficient method...

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Autores principales: Richardson, William C., Whitaker, Dallin R., Sant, Kyler P., Barney, Nicholas S., Call, Ryan S., Roundy, Bruce A., Aanderud, Zachary T., Madsen, Matthew D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6303710/
https://www.ncbi.nlm.nih.gov/pubmed/30598754
http://dx.doi.org/10.1002/ece3.4591
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author Richardson, William C.
Whitaker, Dallin R.
Sant, Kyler P.
Barney, Nicholas S.
Call, Ryan S.
Roundy, Bruce A.
Aanderud, Zachary T.
Madsen, Matthew D.
author_facet Richardson, William C.
Whitaker, Dallin R.
Sant, Kyler P.
Barney, Nicholas S.
Call, Ryan S.
Roundy, Bruce A.
Aanderud, Zachary T.
Madsen, Matthew D.
author_sort Richardson, William C.
collection PubMed
description Germination timing has a strong influence on direct seeding efforts, and therefore is a closely tracked demographic stage in a wide variety of wildland and agricultural settings. Predictive seed germination models, based on soil moisture and temperature data in the seed zone are an efficient method of estimating germination timing. We utilized Visual Basic for Applications (VBA) to create Auto‐Germ, which is an Excel workbook that allows a user to estimate field germination timing based on wet‐thermal accumulation models and field temperature and soil moisture data. To demonstrate the capabilities of Auto‐Germ, we calculated various germination indices and modeled germination timing for 11 different species, across 6 years, and 10 Artemisia‐steppe sites in the Great Basin of North America to identify the planting date required for 50% or more of the simulated population to germinate in spring (1 March or later), which is when conditions are predicted to be more conducive for plant establishment. Both between and within the species, germination models indicated that there was high temporal and spatial variability in the planting date required for spring germination to occur. However, some general trends were identified, with species falling roughly into three categories, where seeds could be planted on average in either fall (Artemisia tridentata ssp. wyomingensis and Leymus cinereus), early winter (Festuca idahoensis, Poa secunda, Elymus lanceolatus, Elymus elymoides, and Linum lewisii), or mid‐winter (Achillea millefolium, Elymus wawawaiensis, and Pseudoroegneria spicata) and still not run the risk of germination during winter. These predictions made through Auto‐Germ demonstrate that fall may not be an optimal time period for sowing seeds for most non‐dormant species if the desired goal is to have seeds germinate in spring.
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spelling pubmed-63037102018-12-31 Use of auto‐germ to model germination timing in the sagebrush‐steppe Richardson, William C. Whitaker, Dallin R. Sant, Kyler P. Barney, Nicholas S. Call, Ryan S. Roundy, Bruce A. Aanderud, Zachary T. Madsen, Matthew D. Ecol Evol Original Research Germination timing has a strong influence on direct seeding efforts, and therefore is a closely tracked demographic stage in a wide variety of wildland and agricultural settings. Predictive seed germination models, based on soil moisture and temperature data in the seed zone are an efficient method of estimating germination timing. We utilized Visual Basic for Applications (VBA) to create Auto‐Germ, which is an Excel workbook that allows a user to estimate field germination timing based on wet‐thermal accumulation models and field temperature and soil moisture data. To demonstrate the capabilities of Auto‐Germ, we calculated various germination indices and modeled germination timing for 11 different species, across 6 years, and 10 Artemisia‐steppe sites in the Great Basin of North America to identify the planting date required for 50% or more of the simulated population to germinate in spring (1 March or later), which is when conditions are predicted to be more conducive for plant establishment. Both between and within the species, germination models indicated that there was high temporal and spatial variability in the planting date required for spring germination to occur. However, some general trends were identified, with species falling roughly into three categories, where seeds could be planted on average in either fall (Artemisia tridentata ssp. wyomingensis and Leymus cinereus), early winter (Festuca idahoensis, Poa secunda, Elymus lanceolatus, Elymus elymoides, and Linum lewisii), or mid‐winter (Achillea millefolium, Elymus wawawaiensis, and Pseudoroegneria spicata) and still not run the risk of germination during winter. These predictions made through Auto‐Germ demonstrate that fall may not be an optimal time period for sowing seeds for most non‐dormant species if the desired goal is to have seeds germinate in spring. John Wiley and Sons Inc. 2018-11-14 /pmc/articles/PMC6303710/ /pubmed/30598754 http://dx.doi.org/10.1002/ece3.4591 Text en © 2018 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Richardson, William C.
Whitaker, Dallin R.
Sant, Kyler P.
Barney, Nicholas S.
Call, Ryan S.
Roundy, Bruce A.
Aanderud, Zachary T.
Madsen, Matthew D.
Use of auto‐germ to model germination timing in the sagebrush‐steppe
title Use of auto‐germ to model germination timing in the sagebrush‐steppe
title_full Use of auto‐germ to model germination timing in the sagebrush‐steppe
title_fullStr Use of auto‐germ to model germination timing in the sagebrush‐steppe
title_full_unstemmed Use of auto‐germ to model germination timing in the sagebrush‐steppe
title_short Use of auto‐germ to model germination timing in the sagebrush‐steppe
title_sort use of auto‐germ to model germination timing in the sagebrush‐steppe
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6303710/
https://www.ncbi.nlm.nih.gov/pubmed/30598754
http://dx.doi.org/10.1002/ece3.4591
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