Evidence for life history changes in high-altitude populations of three perennial forbs.

@article{vonArx2006EvidenceFL,
  title={Evidence for life history changes in high-altitude populations of three perennial forbs.},
  author={Georg von Arx and Peter John Edwards and Hansj{\"o}rg Dietz},
  journal={Ecology},
  year={2006},
  volume={87 3},
  pages={
          665-74
        }
}
Relatively little is known about how the life histories of perennial forb species, and especially their lifetime patterns of growth, vary across environmental gradients. We used a post hoc approach (herb-chronology) to determine plant age and previous growth (width of successive annual rings in roots) in three species of perennial forb (two long-lived species [Penstemon venustus, Lupinus laxiflorus] and one short-lived [Rudbeckia occidentalis]) along a 1000-m altitudinal gradient in the Wallowa… Expand
Herb-chronology as a tool for determining the age of perennial forbs in tropical climates
TLDR
Investigation of the applicability of herb-chronology on the tropical plant Pentalinon andrieuxii (Mull.) B.F. Hansen & Wunderlin shows that herb- Chronology is a potentially useful tool in determining the age of plants growing in tropical climates. Expand
Altitudinal changes in the growth and allometry of Rumex alpinus
TLDR
Low temporal inequality in growth indicates that the perennial rhizome system plays a role in buffering year to year climatic variability in the harsh environment along altitudinal gradients. Expand
Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China
TLDR
This study collected the main roots of 11 perennial forbs species along the precipitation gradient in the Loess Plateau, and analyzed the growth rings in the secondary root xylem, finding that ten species showed distinct annual growth rings, and the anatomical patterns, including vessel size and density, varied considerably among different families. Expand
High Phenotypic Plasticity in a Prominent Plant Invader along Altitudinal and Temperature Gradients
Studies on plant growth and trait variation along environmental gradients can provide important information for identifying drivers of plant invasions and for deriving management strategies. We usedExpand
Age of maturity in alpine herbaceous perennials in the northwest Caucasus
TLDR
The general gradient of alpine plant traits and population strategies was determined and represents a continuum ranging from ruderal–stress-tolerators (shorter AOM, clonality, shorter leaf life span, low rate of mycorrhizal infection, low regrowth ability, low generative shoot number, low specific leaf area and leaf nitrogen content) to competitor– stress-Tolerators. Expand
Demographic processes of upward range contraction in a long‐lived Mediterranean high mountain plant
TLDR
The results suggest that rear edge populations of S. ciliata at Sierra de Guadarrama are suffering demographic processes that may be leading to the latitudinal displacement of the species' range. Expand
Adult age of vascular plant species along an elevational land-use and climate gradient
TLDR
A general increase in adult age towards higher elevations at the level of overall interspecific variation is found, and this trend was also detectable within individual plant families, implying that climate warming could accelerate species turnover rates by favoring short-lived species over the whole range of life histories and species assemblages. Expand
Variation of vegetative and floral traits in the alpine plant Solidago minuta: evidence for local optimum along an elevational gradient
TLDR
Best floral performance in the centre of the elevational range of S. minuta may also support the idea that the favourability of habitat conditions declines from the centre to the margin of the distribution, and species are expected to be more abundant, increase reproduction and perform better in the centres of the range. Expand
Growth rings in the roots of temperate forbs are robust annual markers.
TLDR
The results of this study demonstrate that the growth rings in the roots of northern temperate forbs represent robust annual growth increments and can reliably be used in herb-chronological studies of age- and growth-related questions in plant ecology. Expand
Flowering phenology and reproductive fitness along a mountain slope: maladaptive responses to transplantation to a warmer climate in Campanula thyrsoides
TLDR
The frequently reported phenological shift in plant species as a response to global warming may include heavy fitness costs that may hamper species survival and it is suggested that phenology is maladaptive when C. thyrsoides faces temperature conditions deviating from its natural amplitude. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 56 REFERENCES
LIFE HISTORIES AND DEMOGRAPHY OF SHADE‐TOLERANT TEMPERATE FOREST HERBS: A REVIEW
TLDR
The transition matrix model is suggested as a promising approach to future studies in plant demography on the life histories and demographic patterns of shade-tolerant herbs of temperate deciduous forest. Expand
Annual rings in native and introduced forbs of lower Michigan, U.S.A.
TLDR
This study sampled established individuals of dicotyledonous perennial herbs in different habitats in lower Michigan and analyzed the main roots for the presence of growth rings in the secondary xylem, finding clearly demarcated growth rings among introduced species and in disturbed habitats. Expand
Age‐related growth and reproduction in Diapensia lapponica, an arctic‐alpine cushion plant
TLDR
An evergreen, cushion-forming, circumpolar, arctic-alpine plant, Diapensia lapponica, was followed for five years, 1990–1994, at the Latnjajaure Field Station, northern Swedish Lapland. Expand
Effects of Variable Life History and Insect Herbivores on Reproduction in Solidago macrophylla (Asteraceae) on an Elevational Gradient
TLDR
Patterns of seedling emergence over the environmental gradient resulted in a greater opportunity for selection in lower vs. higher elevation populations. Expand
Ecological Application of ‘Herbchronology’: Comparative Stand Age Structure Analyses of the Invasive PlantBunias orientalisL.
TLDR
The results suggest that age structure data obtained by ‘herbchronology’ can provide valuable supplementary information for studies on the population ecology of perennial dicotyledonous herbs with clearly-demarcated annual rings. Expand
Controlled Environment Studies on the Temperature Responses of Leaf Extension in Species of Poa with Diverse Altitudinal Ranges
TLDR
In vivo measurements of plastic Extensibility confirmed the conclusion that low extensibility is likely to be the major limit to extension close to the low temperature threshold, in P. pratensis and P. alpina, and in vitro measurements of leaf plasticity also decreased, suggesting that low cell wall extensible, rather than leaf turgor, limits leaf extension at low temperatures. Expand
How long can glacier foreland species live
TLDR
Age determinations provide information on longevity of the species and on their population structure and were only confirmed for the pioneer Saxifraga oppositifolia . Expand
THRESHOLD SIZE FOR FLOWERING IN DIFFERENT HABITATS: EFFECTS OF SIZE‐DEPENDENT GROWTH AND SURVIVAL
TLDR
This prediction that in environments where organisms experience high survival rates or gain fecundity with age or size, natural selection favors delayed maturity is tested by comparing sand dune populations of the facultative biennial herb Cynoglossum officinale. Expand
Growth Increment Patterns in the Roots of Two Alpine Forbs Growing in the Center and at the Periphery of a Snowbank
TLDR
The results suggest that effects of climatic fluctuations on plant growth can be amplified in snowbanks and that there may be favorable growth conditions initially at the periphery of a snowbank that are compensated for in the center of the snowbank, in the long run, by continuously low-competition growth conditions. Expand
Growth rate and basal area response curves of four Eucalyptus species on Mt. Wellington, Tasmania
TLDR
A glasshouse trial with Eucalyptus seedlings indicated that potential growth rates decline with increasing altitude of seed source, consistent with the hypothesis that competition is more important in productive environments. Expand
...
1
2
3
4
5
...