Climate change and plant regeneration from seed

Walck, Jeffrey L.; Hidayati, Siti N.; Dixon, Kingsley W.; Thompson, Ken; Poschlod, Peter

doi:10.1111/j.1365-2486.2010.02368.x

Cited by 789 publications

(790 citation statements)

References 210 publications

(217 reference statements)

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“…Coupled with increasing uncertainty surrounding inter-annual variability of precipitation in the future (Kharin et al, 2007), changes in plant population and community dynamics become an area of concern (McCarragher et al, 2011;Walck et al, 2011). Noticeable shifts in species distributions have already been documented (Beckage et al, 2008;Lenoir et al, 2008), and are predicted to continue in the future (Zhu et al, 2012) as species attempt to maintain their bioclimatic niches (Goldblum and Rigg, 2005;Iverson and Prasad, 2010).…”

Section: Introductionmentioning

confidence: 99%

Assessing tree germination resilience to global warming: a manipulative experiment using sugar maple (Acer saccharum)

et al. 2016

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A climate warming of 2-5°C by the end of the century will impact the likelihood of seed germination of sugar maple (Acer saccharum), a dominant tree species which possesses a restricted temperature range to ensure successful reproduction. We hypothesize that seed origin affects germination due to the species' local adaptation to temperature. We tested this by experimentally investigating the effect of incubation temperature and temperature shifting on sugar maple seed germination from seven different seed sources representing the current species range. Survival analysis showed that seeds from the northern range had the highest germination percentage, while the southern range had the lowest. The mean germination percentage under constant temperatures was best when temperatures were ≤5°C, whereas germination percentages plummeted at temperatures ≥11°C (5.8%). Cool shifting increased germination by 19.1% over constant temperature treatments and by 29.3% over warm shifting treatments. Both shifting treatments caused earlier germination relative to the constant temperature treatments. A climate warming of up to +5°C is shown to severely reduce germination of seeds from the southern range. However, under a more pronounced warming of 7°C, seed germination at the northern range become more affected and now comparable to those found from the southern range. This study states that the high seed germination percentage found in sugar maple at the northern range makes it fairly resilient to the warmest projected temperature increase for the next century. These findings provide forest managers with the necessary information to make accurate projections when considering strategies for future regeneration while also considering climate warming.

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Section: Introductionmentioning

confidence: 99%

Assessing tree germination resilience to global warming: a manipulative experiment using sugar maple (Acer saccharum)

et al. 2016

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“…In the annual dormancy cycle, if the correct spatial window does not occur, sensitivity is lost and the temporal window will close for another year. This dynamic environmental response allows multiple species to compete successfully within species-rich natural communities Baskin, 1998, 2006;Walck et al, 2011). There are limited data available regarding differences in impact of environmental signals on dormancy in winter-and summer-annual species.…”

Section: Introductionmentioning

confidence: 99%

Seed dormancy is a dynamic state: variable responses to pre- and post-shedding environmental signals in seeds of contrastingArabidopsisecotypes

2015

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Seeds have evolved to be highly efficient environmental sensors that respond not only to their prevailing environment, but also their environmental history, to regulate dormancy and the initiation of germination. In the present work we investigate the combined impact of a number of environmental signals (temperature, nitrate, light) during seed development on the mother plant, during post-shedding imbibition and during prolonged post-shedding exposure in both dry and imbibed states, simulating time in the soil seed bank. The differing response to these environments was observed in contrasting winter (Cvi, Ler) and summer (Bur) annual Arabidopsis ecotypes. Results presented show that environmental signals both pre-and post-shedding determine the depth of physiological dormancy and therefore the germination response to the ambient environment. The ecotype differences in seed response to ambient germination conditions are greatly enhanced by seed maturation in different environments. Further variation in response develops following shedding when seeds do not receive the full complement of environmental signals required for germination and enter the soil seed bank in either dry or imbibed states. Species seed dormancy characteristics cannot therefore be easily defined, as seed dormancy is a dynamic state subject to within-species adaptation to local environments.

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“…Moreover, considering the possible changes in precipitation frequency, three watering frequency treatments were applied. The amount of water was expressed as soil moisture content rather than millimetres of rainfall since (i) this is a stronger predictor of the impact on plant establishment than precipitation (Walck et al, 2011), (ii) germination and other early establishment variables are highly dependent on available soil moisture (Kos and Poschlod, 2008), and (iii) it is easier to compare the results with previous studies that used this variable (Vicca et al, 2012;Carón et al, 2014b).…”

Section: Experimental Designmentioning

confidence: 95%

“…Even though climate change will likely affect all plant life cycle phases, plant reproduction has been suggested to be especially sensitive (Hedhly et al, 2008;Walck et al, 2011). In many cases, warming has been shown to positively influence seed germination McCarragher et al, 2011) or to enhance seedling survival and growth (Piper et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Temperature has been shown to influence seed production (Walck et al, 2011;Carón et al, 2014a), germination, establishment (Lewis et al, 1999;Jensen, 2001) and growth of plants (Rapp et al, 2012). Rainfall amount or soil moisture content may affect plant distributions (North et al, 2005), seed germination (Fay & Schultz, 2009,b;Carón et al, 2014a,b), growth (Fay and Schultz, 2009;Dreesen et al, 2012), phenology (Seghieri et al, 2009), and mortality (Anderegg et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Impacts of warming and changes in precipitation frequency on the regeneration of two Acer species

Carón

Frenne

Chabrerie

et al. 2015

Flora - Morphology, Distribution, Functional Ecology of Plants

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a b s t r a c tClimate projections indicate that temperatures will increase by up to 4.5 • C in Europe by the end of this century, and that more extreme rainfall events and longer intervening dry periods will take place. Climate change will likely affect all phases of the life cycle of plants, but plant reproduction has been suggested to be especially sensitive. Here, using a combination of approaches (soil heaters and different provenances along a latitudinal gradient), we analyzed the regeneration from seeds of Acer platanoides and A. pseudoplatanus, two tree species considered, from a management point of view, of secondary relevance. We studied germination, seedling survival and growth in a full-factorial experiment including warming and changes in watering frequency. Both species responded to warming, watering frequency and seed provenance, with stronger (negative) effects of warming and provenance than of watering frequency. In general, the central provenances performed better than the northernmost and southernmost provenances. We also detected interactive effects between warming, watering frequency and/or seed provenance. Based on these results, both species are expected to show dissimilar responses to the changes in the studied climatic factors, but also the impacts of climate change on the different phases of plant regeneration may differ in direction and magnitude. In general increases in the precipitation, frequency will stimulate germination while warming will reduce survival and growth. Moreover, the frequent divergent responses of seedlings along the latitudinal gradient suggest that climate change will likely have heterogeneous impacts across Europe, with stronger impacts in the northern and southern parts of the species' distribution ranges.

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Climate change and plant regeneration from seed

Cited by 789 publications

References 210 publications

Assessing tree germination resilience to global warming: a manipulative experiment using sugar maple (Acer saccharum)

Assessing tree germination resilience to global warming: a manipulative experiment using sugar maple (Acer saccharum)

Seed dormancy is a dynamic state: variable responses to pre- and post-shedding environmental signals in seeds of contrastingArabidopsisecotypes

Impacts of warming and changes in precipitation frequency on the regeneration of two Acer species

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