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How does the 120-year cycle mast seeding of dwarf bamboo affect the rodent population?

Ecological Processes 2022年第1期11卷 577-586页

作者： Hanami Suzuki Haruka Kashiwagi Hisashi Kajimura Laboratory of Forest Protection Graduate School of Bioagricultural SciencesNagoya UniversityFurochoChikusakuNagoya 468-8601Japan Nagoya City Science Museum NakakuNagoya 460-0008Japan

Background:In 2017,large-scale flowering,seeding,and dying events of dwarf bamboo(Sasa borealis)occurred in a wide range in central Japan for the first time in 120 *** phenomenon of ***,like the mast seeding of trees,could be expected to provide a large amount of food for seed-eating rodents and gradually affect their ecology and population *** captured rodents in survey plots in a secondary broad-leaved forest with the phenomenon from 2018 to 2019 to investigate the species,the number of individuals,growing stage,sex,and body *** addition,we also compared the capture data for 2 years(2018–2019)with that for the mast seeding year(2017)and 6 years before it(2011–2016).Results:The mast seeding of *** greatly increased the population size of rodents,especially Apodemus speciosus and ***,eothenomys smithii did not show such an *** of the captured rodent individuals were already adults at the time of new capture,and the proportion of male juveniles was extremely *** results suggest that the mast seeding of *** created unusually rich food availability for the population concentration of rodents due to their ***,body mass was not significantly different before and after the mast *** addition,the increased populations of the two Apodemus species did not decline 2 years after the *** masting,contrary to the previously reported decrease of rodent populations after tree ***:Our results indicate that the mast seeding of *** affected the population dynamics of Apodemus species over a long time and their individual composition of different growth ***,it did not affect their body mass.

关键词： Apodemus speciosus Apodemus argenteus eothenomys smithii Mast seeding Population dynamics Predator satiation hypothesis Sasa borealis

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