Relationships between Fish Species Abundances and Water Transparency in Hypertrophic Turbid Waters of Temperate Shallow Lakes

2010 ◽  
Vol 95 (2) ◽  
pp. 142-155 ◽  
Author(s):  
Juan José Rosso ◽  
Alejandro Sosnovsky ◽  
Armando M. Rennella ◽  
Rolando Quirós
Keyword(s):  
Fish Species ◽  
Shallow Lakes ◽  
Water Transparency ◽  
Turbid Waters ◽  
Species Abundances

Energetic Asymmetry Connected with Energy Flow Changes in Response to Eutrophication: A Study of Multiple Fish Species in Subtropical Shallow Lakes

2020 ◽  
Vol 67 (4) ◽  
pp. 305
Author(s):  
Hong Fu ◽  
Huan Zhang ◽  
Liang He ◽  
Yongcui Sha ◽  
Kangshun Zhao ◽  
...  
Keyword(s):  
Fish Species ◽  
Shallow Lakes ◽  
Energy Flow ◽  
Flow Changes

Restoration and Environmental Sustainability of a Small British Columbia Urban Lake

1992 ◽  
Vol 27 (2) ◽  
pp. 341-364
Author(s):  
T. G. Northcote ◽  
B. Luksun
Keyword(s):  
Water Quality ◽  
British Columbia ◽  
Fish Species ◽  
Metropolitan Area ◽  
Environmental Sustainability ◽  
Algal Blooms ◽  
Water Transparency ◽  
Educational Institutions ◽  
Urban Lake ◽  
History Of

Abstract Deer Lake and its watershed, entirely within the municipality of Burnaby, is located at the geographic centre of the Greater Vancouver metropolitan area (population 1.5 million). The lake has had a long history of gradually escalating water quality problems that have included high coliform bacterial levels, bans on swimming, “swimmer’s itch” outbreaks, heavy surface algal blooms, dense weed growths in the shallows, low water transparency, and dominance by “coarse” fish species. Nevertheless, the lake has served the community as a regional park providing various outdoor recreational opportunities that have included walking, boating, swimming and fishing. The history of its water quality problems is reviewed, the results of the various investigations and research on the system are summarized, and the attempts to improve and manage lake conditions by the District of Burnaby are outlined. The role that the community, senior levels of government and educational institutions have played in this process is also discussed.

Length-weight relationships for nine fish species from shallow lakes of the Pampa plain, Argentina

2012 ◽  
Vol 29 (3) ◽  
pp. 679-680
Author(s):  
M. A. González Sagrario ◽  
D. Rodríguez Golpe ◽  
L. La Sala ◽  
J. P. Seco Pon
Keyword(s):  
Fish Species ◽  
Shallow Lakes ◽  
Pampa Plain

scholarly journals Structure of phytoplankton functional groups in shallow lakes with different equilibrium states

2021 ◽  
Vol 8 (1) ◽  
pp. 62-72
Author(s):  
Núbia da Silva ◽  
João Paulo de Oliveira Santos ◽  
Danielle Lima de Oliveira ◽  
Kelly Dayane Pereira da Silva ◽  
Ênio Wocioli Dantas ◽  
...  
Keyword(s):  
Functional Groups ◽  
Shallow Lakes ◽  
Light Attenuation ◽  
Equilibrium States ◽  
Filamentous Cyanobacteria ◽  
Clear Separation ◽  
Turbid Waters ◽  
Toxic Cyanobacteria ◽  
Composition And Structure ◽  
Phytoplankton Functional Groups

Changes in equilibrium states in shallow lakes are associated with disturbances and resilience. The study evaluated the structure and composition of phytoplankton functional groups in two lakes, Lagoa do Paó (turbid waters) and Santa Lúcia (clear waters). Monthly collections of limnological variables and phytoplankton occurred between August 2014 and June 2015 in the pelagic region. The lakes shared five functional groups: K, S1 , X1 , W2 and P, formed by coccoid and filamentous cyanobacteria, coccoid chlorophytes and euglenophytes, and desmids, respectively. The canonical correspondence analysis evidenced a clear separation, highlighting the groups TD, N, W2 and S1 in Santa Lúcia and functional groups composed of potentially toxic cyanobacteria in Lagoa do Paó (SN, Lo), indicating that the submerged macrophyte coverage can act promoting the phosphorous stabilization in the sediment in Santa Lúcia, reducing its contribution to the water column and inhibiting the dominance of the mentioned species. Temperature, pH, phosphorus and light attenuation coefficient influenced the occurrence of H1 , SN, S1 , W2 , X1 , D, and Lo , in the Lagoa do Paó. The composition and structure of the functional groups responded in the two lakes with some functional groups associated with toxic cyanobacteria occurring exclusively in Lagoa do Paó, having also been observed the sharing of some functional groups.

scholarly journals Reproductive dynamics of Lycengraulis grossidens (Clupeiformes: Engraulidae) and Platanichthys platana (Clupeiformes: Clupeidae) in a subtropical coastal lagoon

2017 ◽  
Vol 78 (3) ◽  
pp. 477-486 ◽  
Author(s):  
C. A. Lopes ◽  
D. A. Reynalte-Tataje ◽  
A. P. O. Nuñer
Keyword(s):  
Fish Species ◽  
Coastal Lagoon ◽  
Abiotic Factors ◽  
Gonadosomatic Index ◽  
Sampling Period ◽  
Reproductive Activity ◽  
Water Transparency ◽  
Chi Square ◽  
Positive Correlation ◽  
Significant Difference

Abstract We evaluated the reproductive dynamics of two fish species, Lycengraulis grossidens and Platanichthys platana, in a subtropical freshwater coastal lagoon (Peri Lagoon) in Brazil. Samples were collected from nine sites every two months from June 2008 to April 2012. Different fishing methods were used to capture larvae, juveniles, and adults. Limnological variables were obtained using multiparameter probe. More females than males were collected of both fish species and the chi-square test (χ2) was used to confirm that the sex ratio was female-biased. Large numbers of maturing and mature fishes were observed in almost every sampling month. The gonadosomatic index (GSI) of L. grossidens was the highest in August, October, and December for females and in October for males, and no significant difference was found across years. The GSI of P. platana showed no significant difference across months for either sex; however, significant differences were recorded in year three (June 2010-April 2011) and year four (June 2011-April 2012) for females and in year three (June 2010-April 2011) for males. For both species, GSI was negatively correlated with temperature and water level. L. grossidens larvae were more abundant in October 2010, showing a positive correlation with water transparency, whereas P. platana larvae were more abundant in June 2011, showing a positive correlation with water transparency and negative correlation with temperature and precipitation. Both species were represented by different stages, including larvae, which confirm that these species reproduce in Peri Lagoon. Reproduction was more pronounced in autumn and winter; however, reproductive activity was evident throughout the sampling period. In conclusion, our results show that abiotic factors strongly influence the temporal pattern of reproductive activity and larval assemblages of both L. grossidens and P. platana in Peri Lagoon, Brazil.

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