507
basin (Minas Gerais and Espírito Santos states) by mood flood that reached the
coastal marine areas (Jacobi and Cibim 2015). It caused a total imbalance in important ecosystems associated to the river, the estuarine system and the coast of many
Brazilian states, killed tonnes of fishes and livelihood losses (Jacobi and Cibim
2015). The losses of the tragedy cannot be measured, because they still lack scientific basis to propose recovery plans, if this is still possible. The unique information
is present in environmental technical reports (ICMbio 2016).
A study regarding global fisheries affirmed that, in half of all studied ecosystems,
the average exploitation of marine resources has declined and is now at or below the
rate to maximum sustainable yield (Worm et al. 2009). Nevertheless, the authors
assert that worldwide fish stocks need attention, especially in order to protect vulnerable species. Surprisingly, information on the Western South Atlantic are not
available in this study. It denounces the historical negligence of authorities in building reliable datasets for the fishery statistics in the region (Barletta et al. 2010; Reis
et al. 2016). In addition, it shows the inefficient communication between academy
and institutions responsible for structuring the fisheries conservation scenario,
including the sustainable use of estuarine and marine resources along these coasts.
Acknowledgement The authors acknowledge financial support from Conselho Nacional de
Desenvolvimento Científico e Tecnológico through grant (CNPq-Proc.405818/2012-2/COAGR/
PESCA); Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco through scholarship (FACEPE/BFP-0130-1.08/15); Fundação de Apoio à Pesquisa do Estado de Pernambuco
(FACEPE) through grant (FACEPE/APQ–0911–108/12). MB is a CNPq Fellow.
References
Able KW (2005) A re-examination of fish estuarine dependence: evidence for connectivity
between estuarine and ocean habitats. Estuar Coast Shelf Sci 64:5–7
Almodóvar A, Nicola GG (1999) Effects of a small hydropower station upon brown trout Salmo
trutta L. in the river Hoz Seca (Tagus basin, spain) one year after regulation. Regul Rivers: Res
Manage 15:477–484
Attrill MJ, Rundle SD (2002) Ecotone or ecocline: ecological boundaries in estuaries. Estuar Coast
Shelf Sci 55:929–936
Barletta M, Blaber SJM (2007) Comparison of fish assemblages and guilds in tropical habitats of
the Embley (Indo-West Pacific) and Caeté (Western Atlantic) estuaries. Bull Mar Sci
80:647–680
Barletta M, Barletta-Bergan A (2009) Endogenous activity rhythms of larval fish assemblages in a
mangrove-fringed estuary in North Brazil. Open Fish Sci J 2:15–24
Barletta M, Costa MF (2009) Living and non-living resources exploitation in a tropical semi-arid
estuary. J Coast Res SI 56:371–375
Barletta M, Dantas DV (2016) Environmental gradientes. In: Kennish MJ (ed) Encyclopedia of
estuaries. Springer, Dordrecht, Netherlands, pp 237–242
Barletta M, Barletta-Bergan A, Saint-Paul U, Hubold G (2003) Seasonal changes in density, biomass, and diversity of estuarine fishes in tidal mangrove creeks of the lower Caeté Estuary
(northern Brazilian coast, east Amazon). Mar Ecol Prog Ser 256:217–228
Barletta M, Barletta-Bergan A, Saint-Paul U, Hubold G (2005) The role of salinity in structuring
the fish assemblages in a tropical estuary. J Fish Biol 66:45–72
16 Estuarine Ecoclines and the Associated Fauna: Ecological Information as the Basis…
basin (Minas Gerais and Espírito Santos states) by mood flood that reached the
coastal marine areas (Jacobi and Cibim 2015). It caused a total imbalance in important ecosystems associated to the river, the estuarine system and the coast of many
Brazilian states, killed tonnes of fishes and livelihood losses (Jacobi and Cibim
2015). The losses of the tragedy cannot be measured, because they still lack scientific basis to propose recovery plans, if this is still possible. The unique information
is present in environmental technical reports (ICMbio 2016).
A study regarding global fisheries affirmed that, in half of all studied ecosystems,
the average exploitation of marine resources has declined and is now at or below the
rate to maximum sustainable yield (Worm et al. 2009). Nevertheless, the authors
assert that worldwide fish stocks need attention, especially in order to protect vulnerable species. Surprisingly, information on the Western South Atlantic are not
available in this study. It denounces the historical negligence of authorities in building reliable datasets for the fishery statistics in the region (Barletta et al. 2010; Reis
et al. 2016). In addition, it shows the inefficient communication between academy
and institutions responsible for structuring the fisheries conservation scenario,
including the sustainable use of estuarine and marine resources along these coasts.
Acknowledgement The authors acknowledge financial support from Conselho Nacional de
Desenvolvimento Científico e Tecnológico through grant (CNPq-Proc.405818/2012-2/COAGR/
PESCA); Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco through scholarship (FACEPE/BFP-0130-1.08/15); Fundação de Apoio à Pesquisa do Estado de Pernambuco
(FACEPE) through grant (FACEPE/APQ–0911–108/12). MB is a CNPq Fellow.
References
Able KW (2005) A re-examination of fish estuarine dependence: evidence for connectivity
between estuarine and ocean habitats. Estuar Coast Shelf Sci 64:5–7
Almodóvar A, Nicola GG (1999) Effects of a small hydropower station upon brown trout Salmo
trutta L. in the river Hoz Seca (Tagus basin, spain) one year after regulation. Regul Rivers: Res
Manage 15:477–484
Attrill MJ, Rundle SD (2002) Ecotone or ecocline: ecological boundaries in estuaries. Estuar Coast
Shelf Sci 55:929–936
Barletta M, Blaber SJM (2007) Comparison of fish assemblages and guilds in tropical habitats of
the Embley (Indo-West Pacific) and Caeté (Western Atlantic) estuaries. Bull Mar Sci
80:647–680
Barletta M, Barletta-Bergan A (2009) Endogenous activity rhythms of larval fish assemblages in a
mangrove-fringed estuary in North Brazil. Open Fish Sci J 2:15–24
Barletta M, Costa MF (2009) Living and non-living resources exploitation in a tropical semi-arid
estuary. J Coast Res SI 56:371–375
Barletta M, Dantas DV (2016) Environmental gradientes. In: Kennish MJ (ed) Encyclopedia of
estuaries. Springer, Dordrecht, Netherlands, pp 237–242
Barletta M, Barletta-Bergan A, Saint-Paul U, Hubold G (2003) Seasonal changes in density, biomass, and diversity of estuarine fishes in tidal mangrove creeks of the lower Caeté Estuary
(northern Brazilian coast, east Amazon). Mar Ecol Prog Ser 256:217–228
Barletta M, Barletta-Bergan A, Saint-Paul U, Hubold G (2005) The role of salinity in structuring
the fish assemblages in a tropical estuary. J Fish Biol 66:45–72
16 Estuarine Ecoclines and the Associated Fauna: Ecological Information as the Basis…