Increasing water use and droughts, along with climate variability and land use change, have seriously altered vegetation growth patterns and ecosystem response in several regions alongside the Andes Mountains. Thirty years of the new generation biweekly normalized difference vegetation index (NDVI3g) time series data show significant land cover specific trends and variability in annual producti...

The current distribution of the introduced seagrass Zostera japonica is restricted to the midto upper intertidal zone in the coastal Pacific Northwest region of North America. The climate in this region is cool andwet, becoming hotter and dryerwith increasing distance southward. Since temperature is likely to be an important factor affecting distribution of this species, growth of two populatio...

While bryophytes greatly contribute to plant diversity of semi-natural grasslands, little is known about the relationships between land-use intensity, productivity, and bryophyte diversity in these habitats. We recorded vascular plant and bryophyte vegetation in 85 agricultural used grasslands in two regions in northern and central Germany and gathered information on land-use intensity. To asse...

Plant functional traits are thought to drive variation in primary productivity. However, there is a lack of work examining how dominant species identity affects trait-productivity relationships. The productivity of 12 pasture mixtures was determined in a 3-year field experiment. The mixtures were based on either the winter-active ryegrass (Lolium perenne) or winter-dormant tall fescue (Festuca ...

We examined the response of the normalized difference vegetation index, integrated over the growing season (gNDVI) to mean precipitation, maximum temperature (Tmax), and minimum temperature (Tmin) over an 11-year period (1990–2000) for six biomes in the conterminous United States. We focused on withinand across-biome variance in longterm average gNDVI, emphasizing the degree to which this varia...

Using panel data, this paper tests whether foreign, public, and private capital have a positive and significant effect on aggregate output and labor productivity for Mexico during the 1960-2001 period. The richer information set made possible by the sectorial data enables this study to utilize the methodologically sound Agroup-mean@ Fully Modified Ordinary Least Squares (FMOLS) procedure develo...

BACKGROUND The objective of this study was to estimate the research productivity of different world regions in the field of Parasitology. METHODS Using the PubMed database we retrieved articles from journals included in the "Parasitology" category of the "Journal Citation Reports" database of the Institute for Scientific Information for the period 1995-2003. Research productivity was evaluate...

This paper exploits a unique 2003-2011 large dataset, indexed by Thomson & Reuters, consisting of 17.2 million disambiguated authors classified into 30 broad scientific fields, as well as the 48.2 million articles resulting from a multiplying strategy in which any article co-authored by two or more persons is wholly assigned as many times as necessary to each of them. We measure individual prod...

Morphological productivity is generally seen as affix-driven, with a given affix selecting base words satisfying a range of formal and semantic selectional restrictions. Plag (1999), however, has shown that there are base-driven selectional restrictions, and Hay (2000) and Hay & Baayen (2002) have shown that the frequency relation between derived and base word is correlated with affix productiv...