Litter removal reduces seed predation in restored prairies during times when seed predation would otherwise be high
Litter removal reduces seed predation in restored prairies during times when seed predation would otherwise be high
复制标题
在恢复后的草原上,当种子捕食率很高时,清除垃圾可以减少种子捕食率
DOI:
10.1111/rec.13550
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发表时间:
2021
影响因子:
3.2
通讯作者:
Damschen, Ellen I.
中科院分区:
文献类型:
--
作者:
Anderegg, Genevieve C.;Henn, Jonathan J.;Orrock, John L.;Damschen, Ellen I.
Understanding patterns of seed predation in tallgrass prairie restorations is vital because seed additions are often used by managers to increase diversity and promote native species. However, the success of seed additions depends on the extent of seed predation. It is not clear how seed predation varies through time and to what extent it is affected by various commonly used management techniques in grasslands (e.g. spring or fall prescribed burns, mowing). We examined how predation ofSorghastrum nutansseeds changed during eight trials between June 2018 and April 2019 in plots that received one of four different plant litter removal treatments (fall mow, fall burn, spring burn, and unaltered control). Granivory varied throughout the year, reaching its peak in the late fall and early winter. However, we found that seed predators consumed significantly fewer seeds when litter was removed following fall burn and fall mow treatment applications. These treatments occurred during times when granivory was otherwise high in areas where litter remained intact (control and spring burn plots). Our findings highlight the importance of management decisions and how they interact with granivory in grassland restorations. Both time of year and litter cover determine seed predation rates; seed predators consume more seeds when seeds are abundant but rely on intact litter cover while foraging. This suggests that if seeds are added during the fall, litter should be removed to minimize the loss of seeds to granivory. Alternatively, seed additions during the spring are likely to experience lower rates of seed predation.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
C. Trowbridge;A. Stanley;T. Kaye;P. Dunwiddie;Jennifer L. Williams
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Jennifer L. Williams
DOI:
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1980
期刊:
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1999
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DOI:
--
发表时间:
1979
期刊:
影响因子:
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