304
J. Romero et al.
system to such pollution. In the Mediterranean, there is chronic pollution that is often undetected. This situation is broken irregularly in an
unpredictable way by episodic events. The study of such events would be
the most effective approach for the future. There is also an urgent need
to continuously monitor Mediterranean ecosystems, looking at the disturbances produced by chronically increasing pollution.
Concepts of pollution level and sensitivity of Mediterranean ecosystems are different from the Atlantic coasts, and future efforts should
focus on the study of the actual interacting effects between environmental conditions and ecosystem structure in Mediterranean systems. Weare
convinced that the extrapolation of critical conditions standardized in
Atlantic systems are not valid for the Mediterranean system.
Acknowledgments. We would like to thank E. Ballesteros, F. Boisset,
F. Conde, T. Gallardo, A. G6mez-Garreta, and M.A. Ribera for the
valuable information on green algal proliferations. Part of this work
benefited from a grant CICYT CE 89-0017.
References
Anonymous (1991) Eutrophication of coastal waters. Coastal water quality management
in the country of Funen, Denmark, 1976 -1990. Funen Country Council, 288 pp
Ballesteros E (1989) Production of seaweeds in northwestern Mediterranean marine communities: its relation with environmental factors. In : Ros JD (ed) Topics in marine
biology. Sci Mar 53 (2-3): 145-158
Ballesteros E (1992) Els vegetals i la zonaci6 litoral: especies, comunitats i factors que
influeixen en la seva distribuci6. Inst Estudis Catalans, Arxius de la secci6 de ciencies,
Barcelona, 613 pp
Ballesteros E, Perez M, Zabala M (1984) Approximaci6n al conocimiento de las
comunidades algales de la zona infralitoral superior de la costa catalana. Collect Bot
15: 69-lO0
Camp J (1994) Aproximactiones a la dinamica ecol6gica de una bahia estmirica mediterninea. PhD Thesis, Univ Barcelona, 245 pp
Camp J, Delgado M (1987) Hidrografia de las bahias del delta del Ebro. Invest Pesq 51(3):
251-369
Camp J, Romero J, Perez M, Vidal M, Delgado M, Martinez A (1992) Productionconsumption in an estuarine bay: how anoxia is prevented in a forced system. Oecol
Aquat 10: 145-152
Delgado M, Camp J (1987) Abundancia y distribuci6n de nutrientes inorganicos disueltos
en las bahias del delta del Ebro. Invest Pesq 51(3): 427 -441
Fera P (1993) Marine eutrophication along the Brittany coast. Origin and evolution. Eur
Water Pollut Control 3(4): 26-32
J. Romero et al.
system to such pollution. In the Mediterranean, there is chronic pollution that is often undetected. This situation is broken irregularly in an
unpredictable way by episodic events. The study of such events would be
the most effective approach for the future. There is also an urgent need
to continuously monitor Mediterranean ecosystems, looking at the disturbances produced by chronically increasing pollution.
Concepts of pollution level and sensitivity of Mediterranean ecosystems are different from the Atlantic coasts, and future efforts should
focus on the study of the actual interacting effects between environmental conditions and ecosystem structure in Mediterranean systems. Weare
convinced that the extrapolation of critical conditions standardized in
Atlantic systems are not valid for the Mediterranean system.
Acknowledgments. We would like to thank E. Ballesteros, F. Boisset,
F. Conde, T. Gallardo, A. G6mez-Garreta, and M.A. Ribera for the
valuable information on green algal proliferations. Part of this work
benefited from a grant CICYT CE 89-0017.
References
Anonymous (1991) Eutrophication of coastal waters. Coastal water quality management
in the country of Funen, Denmark, 1976 -1990. Funen Country Council, 288 pp
Ballesteros E (1989) Production of seaweeds in northwestern Mediterranean marine communities: its relation with environmental factors. In : Ros JD (ed) Topics in marine
biology. Sci Mar 53 (2-3): 145-158
Ballesteros E (1992) Els vegetals i la zonaci6 litoral: especies, comunitats i factors que
influeixen en la seva distribuci6. Inst Estudis Catalans, Arxius de la secci6 de ciencies,
Barcelona, 613 pp
Ballesteros E, Perez M, Zabala M (1984) Approximaci6n al conocimiento de las
comunidades algales de la zona infralitoral superior de la costa catalana. Collect Bot
15: 69-lO0
Camp J (1994) Aproximactiones a la dinamica ecol6gica de una bahia estmirica mediterninea. PhD Thesis, Univ Barcelona, 245 pp
Camp J, Delgado M (1987) Hidrografia de las bahias del delta del Ebro. Invest Pesq 51(3):
251-369
Camp J, Romero J, Perez M, Vidal M, Delgado M, Martinez A (1992) Productionconsumption in an estuarine bay: how anoxia is prevented in a forced system. Oecol
Aquat 10: 145-152
Delgado M, Camp J (1987) Abundancia y distribuci6n de nutrientes inorganicos disueltos
en las bahias del delta del Ebro. Invest Pesq 51(3): 427 -441
Fera P (1993) Marine eutrophication along the Brittany coast. Origin and evolution. Eur
Water Pollut Control 3(4): 26-32