scholarly journals Phenological change in a spring ephemeral: implications for pollination and plant reproduction

2016 ◽  
Vol 22 (5) ◽  
pp. 1779-1793 ◽  
Author(s):  
Zachariah J. Gezon ◽  
David W. Inouye ◽  
Rebecca E. Irwin
Keyword(s):  
Plant Reproduction ◽  
Spring Ephemeral

scholarly journals When spring ephemerals fail to meet pollinators: mechanism of phenological mismatch and its impact on plant reproduction

2019 ◽  
Vol 286 (1904) ◽  
pp. 20190573 ◽  
Author(s):  
Gaku Kudo ◽  
Elisabeth J. Cooper
Keyword(s):  
Seed Production ◽  
Plant Reproduction ◽  
Flowering Phenology ◽  
Spring Phenology ◽  
Snow Removal ◽  
Pollination Success ◽  
Spring Ephemerals ◽  
Degree Day ◽  
Spring Ephemeral ◽  
Phenological Mismatch

The flowering phenology of early-blooming plants is largely determined by snowmelt timing in high-latitude and high-altitude ecosystems. When the synchrony of flowering and pollinator emergence is disturbed by climate change, seed production may be restricted due to insufficient pollination success. We revealed the mechanism of phenological mismatch between a spring ephemeral ( Corydalis ambigua ) and its pollinator (overwintered bumblebees), and its impact on plant reproduction, based on 19 years of monitoring and a snow removal experiment in a cool-temperate forest in northern Japan. Early snowmelt increased the risk of phenological mismatch under natural conditions. Seed production was limited by pollination success over the 3 years of the pollination experiment and decreased when flowering occurred prior to bee emergence. Similar trends were detected on modification of flowering phenology through snow removal. Following snowmelt, the length of the pre-flowering period strongly depended on the ambient surface temperature, ranging from 4 days (at greater than 7°C) to 26 days (at 2.5°C). Flowering onset was explained with an accumulated surface degree-day model. Bumblebees emerged when soil temperature reached 6°C, which was predictable by an accumulated soil degree-day model, although foraging activity after emergence might depend on air temperature. These results indicate that phenological mismatch tends to occur when snow melts early but subsequent soil warming progresses slowly. Thus, modification of the snowmelt regime could be a major driver disturbing spring phenology in northern ecosystems.

scholarly journals Application of Tissue Culture in Plant Reproduction

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 342
Author(s):  
Elena Corredoira ◽  
Rita L. Costa
Keyword(s):  
Tissue Culture ◽  
Genetic Improvement ◽  
Plant Reproduction ◽  
Climatic Conditions ◽  
Improvement Programs

The increasing degradation of forests, together with a higher demand for wood and fruit, has led to the need for more efficient trees adapted to the current climatic conditions and, thus, to the need for genetic improvement programs [...]

Nectar robbing impacts pollinator behavior but not plant reproduction

Oikos ◽  
2016 ◽  
Vol 125 (11) ◽  
pp. 1668-1676 ◽  
Author(s):  
Jenny A. Hazlehurst ◽  
Jordan O. Karubian
Keyword(s):  
Plant Reproduction ◽  
Nectar Robbing ◽  
Pollinator Behavior
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