Armeria maritima subsp. elongata
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Life History Traits? |
Trait description |
Trait value |
Organisation of
genetic diversity |
Negative outcomes of mixing |
Mode(s) of reproduction |
Primary sexual (obligatory cross,
hermaphrodite with di-allelic sporophitic self-incompatibility system) /
secondary not found. |
Sexual |
Higher diversity / Lower differentiation |
More vulnerable |
Dispersal method(s) / Ability |
Seed – unspecialised / Pollen –
insects. |
Poor |
Lower diversity / Higher differentiation |
Not
applicable |
Time to maturity / Longevity |
Time to maturity 2-5 years / Longevity
2-3+ |
Long-lived |
Higher diversity / Lower differentiation |
Less
vulnerable |
Reproductive output |
One seed per fruit. |
Poor |
Not applicable |
More
vulnerable |
Recruitment / Turnover potential |
Poor dispersal method and poor
reproductive output. |
Limited |
Lower diversity |
Not
applicable |
UK distribution |
Rare; 10-km2 </=15 |
Rare |
Lower diversity / Higher differentiation |
Not applicable |
Fragmentation, scattered distribution |
Found in just two locations in
one county in England / Amplitude: neutral grasslands overlying river
gravels or alluvium; lowland rough pasture; formerly one site in
limestone grassland; altitude 0-300 m. |
Scattered distribution |
Lower
diversity / Higher differentiation |
More vulnerable |
Ecological amplitude |
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Limited |
Lower differentiation |
Less
vulnerable |
Demography |
Lost from 10 to the 12 localities (all in one county) where
previously found (1950s), threats: agricultural changes and improvement
(ploughing, reseeding); subspecies not recognised in UK until 1950’s so
data from 1989 Atlas only. |
Decline |
Lower diversity |
Not
applicable |
Silene latifolia |
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EBV |
Trait description |
Trait value |
Organisation of genetic
diversity |
Negative outcomes of mixing |
Mode(s) of Reproduction |
primary - sexual (obligatory cross) /
secondary - asexual (stoloniferous; diffuse ramets) |
sexual |
higher
diversity / lower differentiation |
more vulnerable |
Dispersal Method(s) / Ability |
seed - anemochory / pollen - insect |
effective |
higher diversity / lower differentiation |
not
applicable |
Time to Maturity / Longevity |
time to maturity not found / longevity up
to 2-3+ years (occurs as primarily perennial, also annual & biennial) |
long-lived |
higher diversity / lower differentiation |
less
vulnerable |
Reproductive Output |
1,000-10,000 seeds / plant |
prolific |
not
applicable |
less vulnerable |
Recruitment / Turnover Potential |
no life-history traits limiting
recruitment found |
effective |
No major effect on org of diversity
suggested by available data |
not applicable |
UK Distribution (New Atlas, Preston et al. 2002); GB & IR
10-km2 (PLANTATT, Hill et al., 2004) |
throughout much
of the BI; 10-km2 = 2,178 |
not rare |
higher
diversity / lower differentiation |
not applicable |
Fragmentation, Scattered Distribution / Ecological Amplitude |
widely
distributed throughout England except SW & NE; patchy in Wales, E
Scotland & E Ireland; scattered/rare or absent in W Scotland & Ireland
/ amplitude: hedge banks; roadsides; wasteground; arable land; mostly on
light soils in the open |
scattered distribution |
lower diversity /
higher differentiation |
more vulnerable |
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broad amplitude |
higher differentiation |
more
vulnerable |
Demography |
probable decline on western edge of range (only in marginal
distribution), rest stable |
decline (marginal) |
No major effect on org
of diversity, BUT lower for W part of its distribution |
not
applicable |
Achillea millefolium |
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EBV |
Trait description |
Trait value |
Organisation of genetic
diversity |
Negative outcomes of mixing |
Mode(s) of reproduction |
Primary-sexual (obligatory cross); secondary
asexual (hypogeogenous rhizomes, stolons). |
Sexual |
Higher diversity /
Lower differentiation |
More vulnerable |
Dispersal method(s) / Ability |
Seed – Ornithochory, anemochory;
pollen: insects |
Effective |
Higher diversity / Lower differentiation |
Not applicable |
Time to maturity / Longevity |
Time to maturity 1-2 years; longevity
2-3+ years. |
Long-lived. |
Higher diversity / Lower differentiation |
Less vulnerable |
Reproductive output |
1,000-10,000 seeds per plant |
Prolific |
Not
applicable |
Less vulnerable |
Recruitment / Turnover potential |
No life history limiting recruitment
found |
Effective |
No major effect on organisation of diversity
suggested by available data |
Not applicable |
UK distribution |
Very common throughout the British Isles; frequent
where occurring; 10-km2 = 3,756 |
Not rare |
Higher
diversity / Lower differentiation |
Less vulnerable |
Fragmentation, scattered distribution |
No evidence of fragmentation |
No evidence of scattered distribution. |
Higher diversity / Lower
differentiation |
Less vulnerable |
Ecological amplitude |
Amplitude: grasslands-montane to lawns; waysides
and wastegrounds; coastal sand dunes and stabilised shingle. Altitude
0-213 m. |
Limited amplitude. |
Lower differentiation |
Less
vulnerable |
Demography |
No significant change since 1962. |
Stable. |
No major
effect on organisation of diversity suggested by available data |
Not
applicable |