• Publications
  • Influence
Ecological and toxicological effects of inorganic nitrogen pollution in aquatic ecosystems: A global assessment.
A global assessment, with detailed multi-scale data, of the ecological and toxicological effects generated by inorganic nitrogen pollution in aquatic ecosystems is provided and it is concluded that levels of total nitrogen lower than 0.5-1.0 mg TN/L could prevent aquatic ecosystems from acidification. Expand
Nitrate toxicity to aquatic animals: a review with new data for freshwater invertebrates.
Nitrate toxicity to aquatic animals increases with increasing nitrate concentrations and exposure times, and may decrease with increasing body size, water salinity, and environmental adaptation; however, early developmental stages of some marine invertebrates may be so susceptible to nitrate as sensitive freshwater invertebrate. Expand
Fluoride toxicity to aquatic organisms: a review.
Freshwater invertebrates and fishes, especially net-spinning caddisfly larvae and upstream-migrating adult salmons, appear to be more sensitive to fluoride toxicity than estuarine and marine animals. Expand
Macrobenthic surveys as a valuable tool for assessing freshwater quality in the Iberian Peninsula
  • J. A. Camargo
  • Chemistry, Medicine
  • Environmental monitoring and assessment
  • 1993
The second version of the BMWQ score system is applied to two selected field studies (organic and nonorganic pollution) in order to illustrate the suitable functional character of this method and to recommend the use of the a-BMWQ score for the biological assessment of freshwater quality degradation in the Iberian Peninsula. Expand
The importance of biological monitoring for the ecological risk assessment of freshwater pollution : a case study
Abstract A comparative study of the organic pollution generated by trout farm effluent on its downstream ecosystem was conducted in the middle reaches of a Galician stream within the province of LugoExpand
The freshwater planarian Polycelis felina as a sensitive species to assess the long-term toxicity of ammonia.
Because planarians play a key role in streams (as predator/scavenger), safe concentrations should be below 0.02 mg N-NH(3) L(-1) to protect this species in the freshwater community, and safe concentrations of unionized ammonia should be based on very sensitive species. Expand
Structural and trophic alterations in macrobenthic communities downstream from a fish farm outlet
It is concluded that the fish farm generates potamological effects on the functional structure of the macrobenthic community. Expand
Nitrate (NO3N) toxicity to aquatic life: A proposal of safe concentrations for two species of nearctic freshwater invertebrates
The results suggest that larvae of C. pettiti and H. occidentalis may be much more sensitive to nitrate pollution than fishes during long exposures, and further investigations would be required to improve nitrate safe criteria for aquatic life. Expand