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Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems

Niche Modeling: Predictions from Statistical Distributions

Cultural diversity, economic development and societal instability

Amboseli elephant database

The main database (in Access) comprises visual on-the-ground sightings by (over the years) sixteen observers of (now) 53 elephants families (ca. 2000 known individuals) of the Amboseli elephant population from September 1972 until the present.

Analysis of long-term litter decomposition experiments

Although numerous short-term experiments have been used to develop conceptual and simulation models of decomposition, very little is known about the later stages of this process. Exclusion of this later stage has led, at best, to incomplete understanding of ecosystem carbon and nitrogen dynamics. This working group examined the wealth of litter and decomposition data that has been produced by several recent long-term field experiments.

Ants, birds, and tree diversity: Coffee agroecosystem meta-analysis

Data on richness and abundance of three taxonomic groups (ants, birds, and trees) were collected in coffee agroecosystems (varying in management style) and nearby forest fragments in Mesoamerica and South America to assess the impact of coffee management intensification on biodiversity. Original data were collected in several regions/countries including Mexico (Veracruz, Chiapas, Soconusco), Guatemala, Peru, Colombia, and Nicaragua. Data were collected in several different projects by the co-owners of the data, but were generally collected between 1993-2006.

Bluefish life histories

I am interested in intra-specific variability in life histories and while at NCEAS will use bluefish, Pomatomus saltatrix, a globally-distributed and harvested species, to quantify the degree of local adaptation across populations. I will first review ecological and fisheries data from global bluefish populations and use genetic data to produce a DNA-based species phylogeny. I will then use a comparative analysis to separate life history traits across populations to account for phylogenetic effects and thus isolate environmental and fishing effects

Bythotrephes abundance in Harp Lake

This table contains the average abundance of Bythotrephes (#/m3), in each barb class, in Harp Lake. The data are the average of ten randomly selected stations on each date.

Calathea ovandensis demography data

We studied the population dynamics of the plant at four sites at annual censuses, 1982-1987, during the rainy season (June-October) to determine spatial and temporal variability in vital rates and in sensitivity of population growth. Results of general interest included that among the 16 population projection matrices constructed for the 4 year × 4 site combinations, the ones with the highest growth rates had higher sensitivity to transitions of early stages.

Chaoborus abundances in the 8 Dorset lakes on one evening

Weighted areal density of chaoborus larvae in the DORSET lakes. Data are # of larvae per m^2, correcting for areas of the two sampling strata.There are three species, and a potential for 4 instars of each, called CI to CIV. The data set is called chaob.cvs.