▪ Abstract The composition and structure of the semiarid or desert grasslands of
southwestern North America have changed over the past 150 y. Brushy or woody species in …

▪ Abstract Recent overviews have suggested that the relationship between species richness
and productivity (rate of conversion of resources to biomass per unit area per unit time) is …

When a person looks at an object while exploring it with their hand, vision and touch both
provide information for estimating the properties of the object. Vision frequently dominates …

Understanding the relationship between species richness and productivity is fundamental to
the management and preservation of biodiversity. Yet despite years of study and intense …

Accelerating rates of species extinction have prompted a growing number of researchers to
manipulate the richness of various groups of organisms and examine how this aspect of …

Articles be understood only within the environmental context determined by the habitat-
ameliorating effects of these foundation species. These foundation species often depend on …

This concise introductory text provides a complete overview of biodiversity-what it is, how it
arose, its distribution, why it is important, human impact upon it, and what should be done to …

The relationship between biodiversity and ecosystem functioning has emerged as a major
scientific issue today. As experiments progress, there is a growing need for adequate …

Human activities have increased N availability dramatically in terrestrial and aquatic
ecosystems. Extensive research demonstrates that local plant species diversity generally …

In arid/semi-arid ecosystems, biological resources, such as water, soil nutrients, and plant
biomass, typically go through periods of high and low abundance. Short periods of high …