Download Ecology of plant speciation

Abstract
Keywords
INTRODUCTION
1. GENETIC DIFFERENTIATION WITHIN
SPECIES AS A FUNCTION OF POLLINATION
AND SEED DISPERSAL
Fleshy fruits in understory species. —
Speciation in relation to the scale of intraspecific
gene flow
Fig. .
Soil infertility as a contributor to narrow endemism.
—
2. DIVERSIFYING INFLUENCE OF ADAPTIVE
RADIATION
Patterns of adaptive radiation
Fig. .
(A)
(B)
Adaptive radiation and speciation
Early arrival. —
Extensive genetic variation. —
Can the extent of adaptive radiation be predicted?
Evolution along genetic lines of least resistance. —
Island area. —
Key innovations. —
ln Number of species (ln S)
Absence of competitors. —
r
Fig. . A,
B,
D (sp sp–1 Ma–1)
r
Clade age t (Ma)
Organismal abundance. —
Fig. .
(A)
(B)
(C)
Interaction between low dispersal rate and adaptive
radiation. —
Fig. .
(A)
(B)
(C)
(D)
Saturation of adaptive radiation
Island age (Ma)
Fig. .
3. ECOLOGICAL SPECIATION IN PLANTS
Fig. .
Fig. .
4. ECOLOGICAL ASPECTS OF HOMOPLOID
HYBRID SPECIATION
Transgressive hybridization. —
Introgression of adaptive gene combinations. —
Rates of net diversification. —
5. ECOLOGICAL DETERMINANTS OF NET
DIVERSIFICATION RATES AND OVERALL
SPECIES RICHNESS
ln Species richness (ln N)
Species richness (N)
Diversification rate (Ma–1)
r2
Age t (Ma)
Fig. . A,
(C)
(B)
Fig. .
(A)
(B)
Overall species richness. —
Fig. .
CONCLUSIONS AND FUTURE DIRECTIONS
ACKNOWLEDGEMENTS
LITERATURE CITED