We analyzed long-term data related to temporal and spatial variation in fish assemblages from five sites along the Suquía River Basin (Córdoba, Argentina). We aimed at determining whether water quality variations generate changes in fish assemblage structure and composition along the river. Despite deterioration of water quality recorded along the basin, fish assemblages were characterized as qualitatively persistent and quantitatively stable, indicating that the specific composition were relatively constant over time. However, on a temporal scale, fish assemblages from the most polluted areas responded to the water quality degradation with a greater variation of species abundance than those from pristine sites. On a spatial scale, changes in fish assemblage structure were related with watershed disturbance gradient and indicated a strong association between fish species distribution and water quality variation. The alterations found in our study suggest a potential imbalance of fish assemblage structure in the long term.
spatialvariability of the vegetation in a four-year exclosure experiment in Val Trupchun (Swiss National Park). In: M. Schütz, B. O. Krüsi, and P. J. Edwards, (eds.), Succession Research in the Swiss National Park. Nat. park-Forsch Schweiz 89: 165
’s nitrogen balance (PhD-thesis) Faculty of Bioscience Engineering, UGent
Van Meirvenne M. — Hofman G.: 1989. Spatialvariability of soil nitrate nitrogen after potatoes and its change during winter — Plant and Soil vol
Mile, O., I. Mészáros, Gy. Lakatos and Sz. Veres. 2001. A talaj térbeli változatossága és a növényzet közötti összefüggés vizsgálata kiskunsági szikes területen. (Study of relationship between spatialvariability of soil and vegetation in inland saline
Authors:E. Lellei-Kovács, E. Kovács-Láng, T. Kalapos, Z. Botta-Dukát, S. Barabás, and C. Beier
. Yakir. 2003. Modelling temporal and large-scale spatialvariability of soil respiration from soil water availability, temperature and vegetation productivity indices.
Global Biogeochem. Cycles