• Publications
  • Influence
Pollen limitation of plant reproduction: Ecological and evolutionary causes and consequences
TLDR
A change in approach is needed to determine whether pollen limitation reflects random fluctuations around a pollen–resource equilibrium, an adaptation to stochastic pollination environments, or a chronic syndrome caused by an environmental perturbation. Expand
Pollen Limitation of Plant Reproduction: Pattern and Process
TLDR
It is found that the magnitude of pollen limitation observed in natural populations depends on both historical constraints and contemporary ecological factors. Expand
Competition for Pollination Between an Invasive Species (Purple Loosestrife) and a Native Congener
TLDR
Reductions in both pollen quantity and pollen quality may reduce L. alatum seed set, which may mean that invasive plants may be an even greater threat to natives than previously thought. Expand
Testing evolutionary and ecological hypotheses using path analysis and structural equation modelling
The use of path analysis has grown rapidly in recent years, yet few studies employ recent advances in the field of structural equation modelling (SEM). Here I illustrate the capabilities of SEM forExpand
New frontiers in competition for pollination.
TLDR
A conceptual framework is presented that incorporates many aspects of competition for pollination, involving both the quantity and quality of pollination services, and both female and male sex functions of flowers, and how competition might affect plant mating systems, overall reproductive success and multi-species interactions. Expand
EVOLUTIONARY ECOLOGY OF PLANT ADAPTATION TO SERPENTINE SOILS
■ Abstract Plant adaptation to serpentine soil has been a topic of study for many decades, yet investigation of the genetic component of this adaptation has only recently begun. We review theExpand
The influence of Mimulus ringens floral display size on pollinator visitation patterns
TLDR
The three most abundant pollinator species differed significantly in behaviours that could influence plant mating patterns, including number of flowers probed per plant; interplant movement distances; and grooming. Expand
INTERSPECIFIC COMPETITION FOR POLLINATION LOWERS SEED PRODUCTION AND OUTCROSSING IN MIMULUS RINGENS
TLDR
This is the first study to demonstrate that competition for pollination directly in- fluences outcrossing rates, and suggests that in self-compatible populations with genetic load, competition forpollination may not only reduce seed quantity, but may also lower seed quality. Expand
EFFECTS OF POLLEN QUANTITY ON PROGENY VIGOR: EVIDENCE FROM THE DESERT MUSTARD LESQUERELLA FENDLERI
  • R. Mitchell
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 October 1997
TLDR
Results are reported from a study of the effects of pollen load size on progeny vigor for a native, desert mustard (Lesquerellafendleri; Brassicaceae), which may respond differently than wild plants because of their history of close inbreeding and hybridization. Expand
Increased relative abundance of an invasive competitor for pollination, Lythrum salicaria, reduces seed number in Mimulus ringens
TLDR
It was found that the presence of Lythrum salicaria lowered mean seed number in Mimulus ringens fruits, which was most pronounced when the invasive competitor was highly abundant. Expand
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