Nations around the world are required to measure their progress towards key biodiversity goals. One important example of this, the Convention on Biological Diversity's 2010 target, is soon approaching. The target set is to significantly reduce the rate of biodiversity loss by the year 2010. However, to what extent are the data, especially for tropical countries, available to indicate biodiversity change and to what extent is current knowledge of biodiversity change truly a global picture? While species richness is greatest in the tropics, biodiversity data richness is skewed towards the poles. This not only provides a significant challenge for global indicators to accurately represent biodiversity, but also for individual countries that are responsible under such legislation for measuring their own impact on biodiversity. We examine the coverage of biodiversity data using four global biodiversity datasets, and look at how effective current efforts are at addressing this discrepancy, and what countries might be able to do in time for 2010 and beyond. We conclude by suggesting a number of activities which might provide impetus for improved biodiversity monitoring in tropical nations.

Tropical dry evergreen forests (TDEFs) occur as patches along the Coromandel coast of peninsular India. Investigations on plant biodiversity, bioresource values, and conservation status of 75 TDEF sites were carried out. A total of 149 woody plant species representing 102 trees, 47 lianas, and three native herbs were enumerated. Across 75 sites studied, species richness of woody plants ranged from 10 to 69 species. Physiognomically, evergreen species dominated the forest. Forest growth determined as girth increment ranged from 0.37 to 1.08 cm yr⁻¹ for trees and 0.39 to 0.41 cm yr⁻¹ for lianas. At the community level, seasonal flowering with unimodal dry season peak and year-round, bimodal fruiting pattern prevailed. A strong association between the qualitative reproductive traits and pollination and dispersal spectrum among the TDEF species has been demonstrated. In bioresource assessment, 150 medicinal plant species, used for treating more than 52 ailments, were documented. Site disturbance scores were obtained by assessing the various site disturbances such as site encroachment, resource extraction, grazing, fragmentation, weed invasion, etc. Conservation significance of the TDEF sites is emphasized in the light of restricted geographical distribution, moderate level of plant species diversity, representation of the unique forest type, high productivity, and bioresource potential. Restoring the disturbed sites with characteristic TDEF species, and revitalizing the cultural traditions associated with sacred groves by promoting awareness of the ecological and bioresource values of TDEFs, are recommended.

We examined the abundance and diversity of dung beetles in forest fragments within a savanna landscape near Alter do Chão, Pará, Brazil. These fragments have existed for 150 years and possibly millennia. Using pit-fall traps to capture dung beetles, we investigated fragment area, fragment isolation, and tree density in fragments as predictors of species richness, abundance, and biomass of dung beetles. Across six fragments, isolation distance was negatively related with dung beetle species richness, while all other variables were unrelated. We also examined the abundance of the dominant species using flight-intercept traps in 21 fragments. Tree density correlated negatively with abundance of the dominant species, a probable new species.

The effectiveness of a seed disperser is assessed by the quantity (number of visits to fruiting trees and number of seeds dispersed) and quality of dispersal (seeds passed through the gut unharmed and how and where the seeds are dispersed). This is the first study to examine quantitative and qualitative aspects of seed dispersal by golden lion tamarins (Leontopithecus rosalia). The study was conducted from December 1998 to December 2000 and from April 2003 to March 2004 in the União Biological Reserve, Brazil. We marked 1,185 fruiting trees visited by tamarins and collected 1039 feces with seeds. About 76% of feces deposited by L. rosalia did not differ from the spatial distribution of plants of the same species. The mean time of gut retention was 1:14 h, and the mean distance of dispersal was 105 m. Given the effective role of L. rosalia as seed dispersers, their presence in the Atlantic forest is important for the regeneration of the forest.

In Argentina two (Alouatta guariba and Aotus Azarai) out of five species of non-human primates are endangered (Alouatta caraya, Cebus nigritus, and Cebus paraguayanus). However, most of the forests these species inhabit are under continuous anthropogenic alteration and many are not protected. The Estación Biológica de Usos Múltiples de Corrientes (EBCo) is an academic and research institution established in 2001, and its main goals are to ensure the protection of plant and animal species living in the province of Corrientes, northern Argentina, and to develop environmental education in the area surrounding the station. We present a short review of the history of the EBCO, its goals, research, and conservation projects. The main research projects are related to the study of demography, ecology, and behavior of primates in northern Argentina and to the study of ecosystem health aimed at identifying risk factors for disease transmission. Conservation-oriented activities are aimed at improving the ability of conservationists and policy-makers regarding timber exploitation, wildlife conservation, and human health.

Habitat loss, hunting and the pet trade have caused significant reductions in the original distribution of spider monkeys (Ateles spp.) in the Neotropics. Mexico harbors the northernmost distribution of this primate in the Neotropics, and information on the current location of remnant populations and on their demographic features in particularly scarce. In this paper we report the results of a month-long survey during the dry season of a population of spider monkeys (Ateles geoffroyi vellerosus) existing in the rainforest vegetation of the Sumidero Canyon National Park in central Chiapas, Mexico. The 23km-long canyon was divided into five 5km-long segments and the rainforest vegetation at the edges of the river canyon was surveyed from a boat and on the ground for presence of spider monkeys. Surveys resulted in the detection of nine subgroups of spider monkeys in four of the 5km-long segments, for an estimated total population of 36 individuals. Average subgroup size ranged from 3−7 individuals, 28% of these were adult males, 36% were adult females, 28% were juveniles and 8% were infants. Relative abundance was estimated at 1.8 monkeys/km of river. The rainforest vegetation along the river canyon has a patchy distribution and patches are separated by the steep and very tall walls of the canyon. Spider monkeys were observed to move from patch to patch by climbing the walls of the canyon. This unusual behavior allows individual spider monkeys to secure food resources and to meet other conspecifics. Additional surveys are necessary to map annual fluctuations in the size and distribution of the spider monkey population in the canyon.