Reduced colonization capacity in fragmented populations of wind-dispersed grassland forbs

Conservation of Fragmented Populations

In this paper we argue that landscape spatial structure is o f central importance in understanding the effects o f f ragmentat ion on populat ion survival Landscape spatial structure is the spatial relationships among habitat patches and the matr ix in which they are e m ~ l d e ~ Many general models o f subditrlded populat ions make the assump. tions that (1) all habitat patches are equivalent...

Classification of Root Systems of Forbs of Grassland and a Consideration of Their Significance

Small-mammal seed predation limits the recruitment and abundance of two perennial grassland forbs.

Although post-dispersal seed predators are common and often reduce seed density, their influence on plant population abundance remains unclear. On the one hand, increasing evidence suggests that many plant populations are seed limited, implying that seed predators could reduce plant abundance. On the other hand,.it is generally uncertain whether the magnitude of seed limitation imposed by grani...

Spread of North American wind-dispersed trees in future environments.

Despite ample research, understanding plant spread and predicting their ability to track projected climate changes remain a formidable challenge to be confronted. We modelled the spread of North American wind-dispersed trees in current and future (c. 2060) conditions, accounting for variation in 10 key dispersal, demographic and environmental factors affecting population spread. Predicted sprea...

Simulations of populations of Sapajus robustus in a fragmented landscape

The study of populations subject to the phenomenon of loss and fragmentation of habitat, transforming continuous areas into small ones, usually surrounded by anthropogenic matrices, has been the focus of many researches within the scope of conservation. The objective of this study was to develop a computer model by introducing modifications to the renowned Penna Model for biological aging, in o...