How to predict attachment potential of seeds to sheep and cattle coat from simple morphological seed traits

Römermann, Christine; Tackenberg, Oliver; Poschlod, Peter

doi:10.1111/j.0030-1299.2005.13911.x

Cited by 136 publications

(160 citation statements)

References 45 publications

(58 reference statements)

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“…On the basis of results of performed studies and published data (Graae 2002;Römermann et al 2005), it can be concluded, that an increase in the stem length, fruit and seed production, as well as in seed dimensions and considerable seedling emergence enable persistence of Bidens frondosa population in open and sun-lit sites. Simultaneously, it should be add that a decrease in the height of the stems and achene size in partly-shaded and shaded places might contribute to long-distance dispersal of seeds by animals, while the substantial seedling recruitment allows to successful colonization of new areas.…”

Section: Bidens Frondosamentioning

confidence: 96%

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

Kostrakiewicz-Gierałt

Zając²

2014

Biologia

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The investigations of habitat conditions on the variability of selected population features in the two invasive, annuals with different life-history traits were conducted in the years [2008][2009][2010], in the Polish part of the Carpathian Mountains in communities characterized by the gradual decrease of light availability. The individuals of Impatiens glandulifera were surveyed along roadsides, in willow thickets, as well as inside and along the edges of the riparian forest, whereas the individuals of Bidens frondosa were observed in riverside gravels characterized by a different species composition. Each year, the number and density of individuals (stems) occurring in the particular sites were examined, as well as the height and the fruit production in 30 randomly chosen stems were surveyed. Moreover, the number of seeds per fruit, the diaspore dimensions and the seedling recruitment in laboratory conditions were examined during each season. As the values of height of individuals, number of fruits per stem, number of seeds per fruit, as well as the seedling abundance in some groups were not consistent with the normal distribution and the variances were not homogeneous, the non-parametric Kruskal-Wallis test was used in statistical analyses. Much greater number and density of individuals of Impatiens glandulifera were found in riparian forest, than in willow thickets and along the roadsides. In all sites the number and density of individuals increased steadily in consecutive seasons. The great number and density of Bidens frondosa individuals observed in shady and partly shady sites during the first year of studies raised in the second year and subsequently dramatically decreased in the third season. The lowest number and density of individuals noted in the first season in unshaded site raised substantially in subsequent years. The height of stems, as well as seed and fruit production of both taxa diminished with a decrease of height of neighboring plants. The seed dimensions presented the spatial and temporal variability, whereas the number of seedlings among consecutive years and in successive sites did not differ. The considerable height of the individuals of Impatiens glandulifera, high production of large fruits and seeds in open and dry roadside areas can contribute to more effective ballistic dissemination, while substantial seedling recruitment enables the colonization of new, perhaps more advantageous sites. On the other hand, lower individual height, as well as fruit and seed production and considerable seedling emergence allow the population to last and to gradually extend the area in forest communities. The considerable abundance of the high-statured Bidens frondosa individuals, substantial production of large capitula and achenes contribute to long persistence of populations in open and sun-lit sites. The gradually decrease in the height of the stems, achene number and size observed in partly-shaded and shaded places might allow to long-distance dispersal of seeds by animals, while subst...

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Section: Bidens Frondosamentioning

confidence: 96%

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

Kostrakiewicz-Gierałt

Zając²

2014

Biologia

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“…More on methods: Fischer et al (1996); Römermann et al (2005aRömermann et al ( , 2005bRömermann et al ( , 2005c.…”

Section: Special Cases or Extrasmentioning

confidence: 99%

Corrigendum to: New handbook for standardised measurement of plant functional traits worldwide

Pérez‐Harguindeguy¹,

Díaz²,

Garnier³

et al. 2016

Aust. J. Bot.

461

302

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The authors regret that elements of Appendix 1 were incorrect in the original publication. The correct version of Appendix 1 is given below. Appendix 1. Summary of plant traits Summary of plant traits included in the handbookThe range of values corresponds to those generally reported for field-grown plants. Ranges of values are based on the literature and the authors' datasets and do not always necessarily correspond to the widest ranges that exist in nature or are theoretically possible. Recommended sample size indicates the minimum and preferred number of individuals to be sampled, so as to obtain an appropriate indication of the values for the trait of interest; when only one value is given, it corresponds to the number of individuals ( = replicates); when two values are given, the first one corresponds to the number of individuals and the second one to the number of organs to be measured per individual. Note that one replicate can be compounded from several individuals (for smaller species), whereas one individual cannot be used for different replicates. The expected coefficient of variation (CV) range gives the 20th and the 80th percentile of the CV ( = s.d. scaled to the mean) as observed in several datasets obtained for a range of field plants for different biomes. Numbering of plant traits corresponds with the numbering of the chapters in the handbook Abstract. Plant functional traits are the features (morphological, physiological, phenological) that represent ecological strategies and determine how plants respond to environmental factors, affect other trophic levels and influence ecosystem properties. Variation in plant functional traits, and trait syndromes, has proven useful for tackling many important ecological questions at a range of scales, giving rise to a demand for standardised ways to measure ecologically meaningful plant traits. This line of research has been among the most fruitful avenues for understanding ecological and evolutionary patterns and processes. It also has the potential both to build a predictive set of local, regional and global relationships between plants and environment and to quantify a wide range of natural and human-driven processes, including changes in biodiversity, the impacts of species invasions, alterations in biogeochemical processes and vegetation-atmosphere interactions. The importance of these topics dictates the urgent need for more and better data, and increases the value of standardised protocols for quantifying trait variation of different species, in particular for traits with power to predict plant-and ecosystemlevel processes, and for traits that can be measured relatively easily. Updated and expanded from the widely used previous version, this handbook retains the focus on clearly presented, widely applicable, step-by-step recipes, with a minimum of text on theory, and not only includes updated methods for the traits previously covered, but also introduces many new protocols for further traits. This new handbook has a better balance between whole-plant ...

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“…Both seed mass and seed morphology were positively correlated (on 130 species tested) with attachment potential in a model [25]. The "retention potential" of seeds has also been experimentally tested in 100 species [44].…”

Section: Discussionmentioning

confidence: 96%

“…Sheep epizoochory is an important dispersal factor that also has implications for grassland conservation and restoration [1,25,44,56]. The long-distance dispersal potential of species within the present-day communities is positively associated with the amount of grassland in the historical landscape and with the continuity of grazing management [57].…”

Section: Comparison Of the Sampling Methodsmentioning

confidence: 99%

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High potential of sub-Mediterranean dry grasslands for sheep epizoochory

Kaligarič

Brecl²,

Škornik

2016

Open Life Sciences

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There is a general decline of grasslands across Europe due to habitat loss and degradation. Ensuring plant dispersal thus becomes a key process for preserving grassland patches in all scales. We examined diaspore dispersal by sheep epizoochory in the pastures of the North Adriatic Karst (NW Slovenia) and determined the qualitative and quantitative features of diaspores in fur. We recorded 25,650 diaspores of 141 plant taxa (with 107 taxa and 23,350 diaspores determined to species level), using three different methods: (i) the "whole-coat method", (ii) the "part-of-thecoat method" and (iii) a "seedling emergence method". A comparison of these techniques revealed that the "wholecoat method" provided the highest number of diaspores and plant species. All diaspores were clustered into five emergent groups based on seven functional traits (diaspore weight, length, width, height, volume, specific weight and the diaspore surface structure). Our research revealed that sheep represent an important dispersal vector, since about half of the plant species recorded in the pastures were found as diaspores in fur. This study contributes to knowledge about the modes of seed dispersal in seminatural grasslands. Taking into account that livestock play a key role in vegetation dynamics, understanding their effects on seed dispersal is essential for conservation and restoration of these species-rich grassland communities.

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How to predict attachment potential of seeds to sheep and cattle coat from simple morphological seed traits

Cited by 136 publications

References 45 publications

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

Corrigendum to: New handbook for standardised measurement of plant functional traits worldwide

High potential of sub-Mediterranean dry grasslands for sheep epizoochory

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