Multivariate variation within and between open-pollinated families of Douglas-fir (Pseudotsuga menziesii)

The morphological variation of seedlings from a single population of Pseudotsuga menziesii was examined and related to their maternal parentage (41 families) and speed of germination (selection) during the course of a common garden experiment. The largest source of variation among seedlings was attributed to within-family variation. Furthermore, within-family variable intercorrelations differed from family to family, suggesting that intrinsic causal factors are important to the generation and organization of variation. Pooled within-family variation was explored and shown to be related to the between-family variation. These results suggest that developmental and historical factors cannot be ignored in the interpretation and exploitation of sources of variation. Such considerations identify limitations to Neo-Darwinian explanations and suggest reappraisal of progeny trials with respect to these issues. The results also pose limitations to our interpretations of genetic similarity on the basis of multivariate morphological data.

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Highly contrasted responses of Mediterranean octocorals to climate change along a depth gradient

Royal Society Open Science ◽

10.1098/rsos.140493 ◽

2015 ◽

Vol 2 (5) ◽

pp. 140493 ◽

Cited By ~ 11

Author(s):

I. D. Pivotto ◽

D. Nerini ◽

M. Masmoudi ◽

H. Kara ◽

L. Chaoui ◽

...

Keyword(s):

Climate Change ◽

Common Garden ◽

Strong Impact ◽

Common Garden Experiment ◽

Potential Response ◽

Single Population ◽

Integrative Study ◽

Different Depths ◽

Different Response

Climate change has a strong impact on marine ecosystems, including temperate species. Analysing the diversity of thermotolerance levels within species along with their genetic structure enables a better understanding of their potential response to climate change. We performed this integrative study on the Mediterranean octocoral Eunicella cavolini , with samples from different depths and by means of a common garden experiment. This species does not host photosynthetic Symbiodinium , enabling us to focus on the cnidarian response. We compared the thermotolerance of individuals from 20 m and 40 m depths from the same site and with replicates from the same colony. On the basis of an innovative statistical analysis of necrosis kinetics and risk, we demonstrated the occurrence of a very different response between depths at this local scale, with lower thermotolerance of deep individuals. Strongly thermotolerant individuals were observed at 20 m with necrosis appearing at higher temperatures than observed in situ . On the basis of nine microsatellite loci, we showed that these marked thermotolerance differences occur within a single population. This suggests the importance of acclimatization processes in adaptation to these different depths. In addition, differences between replicates demonstrated the occurrence of a variability of response between fragments from the same colony with the possibility of an interaction with a tank effect. Our results provide a basis for studying adaptation and acclimatization in Mediterranean octocorals in a heterogeneous environment.

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Heritable and climatic sources of variation in juvenile tree growth in an Austrian common garden experiment of Central European Norway spruce populations

10.1101/2022.01.10.475611 ◽

2022 ◽

Author(s):

Laura Morales ◽

Kelly Swarts

Keyword(s):

Norway Spruce ◽

Principal Component ◽

Tree Height ◽

Common Garden ◽

Weather Data ◽

Climatic Data ◽

Common Garden Experiment ◽

Weather Variables ◽

Central European ◽

Sources Of Variation

We leveraged publicly available data on juvenile tree height of 299 Central European Norway spruce populations grown in a common garden experiment across 24 diverse trial locations in Austria and weather data from the trial locations and population provenances to parse the heritable and climatic components of tree height variation. Principal component analysis of geospatial and weather variables demonstrated high interannual variation among trial environments, largely driven by differences in precipitation, and separation of population provenances based on altitude, temperature, and snowfall. Tree height was highly heritable and genetic variation for tree height was strongly associated with climatic relationships among population provenances. Modeling the covariance between populations and trial environments based on climatic data increased the heritable signal for tree height.

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SILICA BODIES IN CONIFER FOLIAGE: RESULTS OF A COMMON-GARDEN EXPERIMENT AND IMPLICATIONS FOR THE HISTORY OF THE TERRESTRIAL SILICA CYCLE

10.1130/abs/2017am-304822 ◽

2017 ◽

Author(s):

Jonathan P. Wilson ◽

◽

Nicholas M. Munves

Keyword(s):

Common Garden ◽

Common Garden Experiment ◽

History Of ◽

Silica Cycle

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Sex ratio and life history traits at reaching sexual maturity in the dioecious shrub Fuchsia parviflora: field and common garden experiments

Journal of Tropical Ecology ◽

10.1017/s0266467421000043 ◽

2021 ◽

pp. 1-6

Author(s):

Jessica S. Ambriz ◽

Clementina González ◽

Eduardo Cuevas

Keyword(s):

Natural Population ◽

Sexual Maturity ◽

Sex Ratios ◽

Natural Populations ◽

Common Garden ◽

Common Garden Experiment ◽

Trade Offs ◽

Reproductive Biomass ◽

Common Garden Experiments ◽

Growth And Reproduction

Abstract Fuchsia parviflora is a dioecious shrub that depends on biotic pollination for reproduction. Previous studies suggest that the male plants produce more flowers, and male-biased sex ratios have been found in some natural populations. To assess whether the biased sex ratios found between genders in natural populations are present at the point at which plants reach sexual maturity, and to identify possible trade-offs between growth and reproduction, we performed a common garden experiment. Finally, to complement the information of the common garden experiment, we estimated the reproductive biomass allocation between genders in one natural population. Sex ratios at reaching sexual maturity in F. parviflora did not differ from 0.5, except in one population, which was the smallest seedling population. We found no differences between genders in terms of the probability of germination or flowering. When flowering began, female plants were taller than males and the tallest plants of both genders required more time to reach sexual maturity. Males produced significantly more flowers than females, and the number of flowers increased with plant height in both genders. Finally, in the natural population studied, the investment in reproductive biomass was seven-fold greater in female plants than in male plants. Our results showed no evidence of possible trade-offs between growth and reproduction. Despite the fact that female plants invest more in reproductive biomass, they were taller than the males after flowering, possibly at the expense of herbivory defence.

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A common garden experiment examining light use efficiency and heat sum to explain growth differences in native and exotic Pinus taeda

Forest Ecology and Management ◽

10.1016/j.foreco.2018.05.033 ◽

2018 ◽

Vol 425 ◽

pp. 35-44 ◽

Cited By ~ 7

Author(s):

Timothy J. Albaugh ◽

Thomas R. Fox ◽

Chris A. Maier ◽

Otávio C. Campoe ◽

Rafael A. Rubilar ◽

...

Keyword(s):

Pinus Taeda ◽

Common Garden ◽

Light Use Efficiency ◽

Common Garden Experiment ◽

Use Efficiency ◽

Growth Differences

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Common‐garden experiment reveals clinal trends of bud phenology in black spruce populations from a latitudinal gradient in the boreal forest

Journal of Ecology ◽

10.1111/1365-2745.13582 ◽

2021 ◽

Author(s):

Xiali Guo ◽

Marcin Klisz ◽

Radosław Puchałka ◽

Roberto Silvestro ◽

Patrick Faubert ◽

...

Keyword(s):

Boreal Forest ◽

Latitudinal Gradient ◽

Black Spruce ◽

Common Garden ◽

Common Garden Experiment ◽

Bud Phenology

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Light and propagule pressure affect invasion intensity of Prunus serotina in a 14-tree species forest common garden experiment

NeoBiota ◽

10.3897/neobiota.46.30413 ◽

2019 ◽

Vol 46 ◽

pp. 1-21 ◽

Cited By ~ 6

Author(s):

Andrzej M. Jagodziński ◽

Marcin K. Dyderski ◽

Paweł Horodecki ◽

Kathleen S. Knight ◽

Katarzyna Rawlik ◽

...

Keyword(s):

Aboveground Biomass ◽

Tree Species ◽

Propagule Pressure ◽

Light Availability ◽

Common Garden ◽

Additive Models ◽

Common Garden Experiment ◽

Tree Stand ◽

Biomass Increment ◽

The Impact

Experiments testing multiple factors that affect the rate of invasions in forests are scarce. We aimed to assess how the biomass of invasive Prunusserotina changed over eight years and how this change was affected by light availability, tree stand growth, and propagule pressure. The study was conducted in Siemianice Experimental Forest (W Poland), a common garden forest experiment with 14 tree species. We investigated aboveground biomass and density of P.serotina within 53 experimental plots with initial measurements in 2005 and repeated in 2013. We also measured light availability and distance from seed sources. We used generalized additive models to assess the impact of particular predictors on P.serotina biomass in 2013 and its relative change over eight years. The relative biomass increments of P.serotina ranged from 0 to 22,000-fold. The success of P.serotina, expressed as aboveground biomass and biomass increment, varied among different tree species stands, but was greater under conifers. Total biomass of P.serotina depended on light and propagule availability while biomass increment depended on the change in tree stand biomass, a metric corresponding to tree stand maturation. Our study quantified the range of invasion intensity, expressed as biomass increment, in a forest common garden experiment with 14 tree species. Canopy cover was the most important variable to reduce susceptibility to invasion by P.serotina. Even a modest decrease of overstory biomass, e.g. caused by dieback of coniferous species, may be risky in areas with high propagule pressure from invasive tree species. Thus, P.serotina control may include maintaining high canopy closure and supporting natural regeneration of tree species with high leaf area index, which shade the understory.

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