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Interactive effects of two rodent species on the seed dispersal of Japanese walnut

The effects of seed dispersers on plant fitness (seed dispersal effectiveness, SDE) have been evaluated based on the number (quantity) and recruitment probability (quality) of dispersed seeds. Although seeds of most zoochorous species are dispersed by two or more animal species, which may interact w...

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Autores principales: Okawa, Ryunosuke, Saitoh, Takashi, Noda, Takashi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10593932/
https://www.ncbi.nlm.nih.gov/pubmed/37872180
http://dx.doi.org/10.1038/s41598-023-44513-9
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author Okawa, Ryunosuke
Saitoh, Takashi
Noda, Takashi
author_facet Okawa, Ryunosuke
Saitoh, Takashi
Noda, Takashi
author_sort Okawa, Ryunosuke
collection PubMed
description The effects of seed dispersers on plant fitness (seed dispersal effectiveness, SDE) have been evaluated based on the number (quantity) and recruitment probability (quality) of dispersed seeds. Although seeds of most zoochorous species are dispersed by two or more animal species, which may interact with each other, SDE has often been studied assuming a one-plant and one-animal species system. We compared the SDE of Japanese walnut (Juglans ailanthifolia) between squirrel-only and squirrel-mouse sites in natural forests of Hokkaido, Japan, and found that the SDE from the red squirrel (Sciurus vulgaris), considered a primary seed disperser, was altered by an alternative seed disperser species, the Japanese wood mouse (Apodemus speciosus). Seed removal rates at the squirrel-mouse site were significantly higher than those at the squirrel-only site, and both dispersed seeds and seedlings were less aggregated, with a strongly repulsive relationship with adult conspecific trees at the squirrel-mouse site. Seedlings established themselves at a location with fewer medium-sized trees (< 10 cm DBH) at the squirrel-mouse site. These results suggest that the interactive effect of the rodent species affects the SDE of Japanese walnut.
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spelling pubmed-105939322023-10-25 Interactive effects of two rodent species on the seed dispersal of Japanese walnut Okawa, Ryunosuke Saitoh, Takashi Noda, Takashi Sci Rep Article The effects of seed dispersers on plant fitness (seed dispersal effectiveness, SDE) have been evaluated based on the number (quantity) and recruitment probability (quality) of dispersed seeds. Although seeds of most zoochorous species are dispersed by two or more animal species, which may interact with each other, SDE has often been studied assuming a one-plant and one-animal species system. We compared the SDE of Japanese walnut (Juglans ailanthifolia) between squirrel-only and squirrel-mouse sites in natural forests of Hokkaido, Japan, and found that the SDE from the red squirrel (Sciurus vulgaris), considered a primary seed disperser, was altered by an alternative seed disperser species, the Japanese wood mouse (Apodemus speciosus). Seed removal rates at the squirrel-mouse site were significantly higher than those at the squirrel-only site, and both dispersed seeds and seedlings were less aggregated, with a strongly repulsive relationship with adult conspecific trees at the squirrel-mouse site. Seedlings established themselves at a location with fewer medium-sized trees (< 10 cm DBH) at the squirrel-mouse site. These results suggest that the interactive effect of the rodent species affects the SDE of Japanese walnut. Nature Publishing Group UK 2023-10-23 /pmc/articles/PMC10593932/ /pubmed/37872180 http://dx.doi.org/10.1038/s41598-023-44513-9 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Okawa, Ryunosuke
Saitoh, Takashi
Noda, Takashi
Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title_full Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title_fullStr Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title_full_unstemmed Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title_short Interactive effects of two rodent species on the seed dispersal of Japanese walnut
title_sort interactive effects of two rodent species on the seed dispersal of japanese walnut
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10593932/
https://www.ncbi.nlm.nih.gov/pubmed/37872180
http://dx.doi.org/10.1038/s41598-023-44513-9
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