Pollution, overexploitation and climate warming endanger the freshwater ecosystems in many regions, particularly in developing countries. This publication asks if at least the BRIC (Brazil, Russia, India and China) group and the Outreach countries (in addition South Africa and Mexico), have the scientific capacity in limnology to mitigate this development. For this reason the scientific output was analyzed between 1999 and 2007. With a share of 5.0% of all limnological papers in 2007 world wide the P.R. China (Peoples Republic of China) produced the largest numbers of publications, followed by Brazil and Mexico. For comparison, this year Germany's share was 5.8% and the USA had the highest share with 33.9%. The growth rate was also highest for the P. R. China and Brazil. Based on the journal impact factors, China's quality of papers was best followed by South Africa and Russia. Brazil was strong in fish biology, whereas China published the most papers in all other disciplines.
IntroductionProgressive pollution, overexploitation (PEARCE, 2006) and predicted negative consequences of climate warming on water (ARNELL, 2004; IPCC, 2008) are serious concerns for all freshwater ecosystems in the world, but in particular for those in many developing countries. The quality and quantity of fresh water, as the critical medium for all kinds of living processes, is profoundly endangered (WETZEL, 1992). The decline of biodiversity in freshwater is more dramatic than in most terrestrial ecosystems (DUDGEON, 2006). For this reason the United Nations (UN, 2005) declared the years 2005-2015 as an International Decade for Action "Water of Life". The principal aims are to reduce by half the proportion of people without access to safe drinking water by 2015 and to stop unsustainable exploitation of water resources. This aim seems overly optimistic because most countries must still make huge and rapid political and scientific investments to tr y to sustain and recover the basic life processes for billions of people.As an essential prerequisite for such measures, all monetary and engineering investments in developing countries have to be based on sound science. Scientific knowledge in limnology is essential to process further investments properly. The situation does not seem encouraging. Although international collaboration in limnology is higher than in many other fields of science (RESH and YAMAMOTO, 1994), present collaborations and technology transfers from the first to the third world are still inadequate and do not lead to capacity building in third world countries (WISHART and DAVIES, 1998). On the other hand, some of the developing countries were economically most successful in the last decade and it may no longer be Publications of BRIC-and Outreach Countries 299