scholarly journals The effect of cyanobacterial blooms on bio- and functional diversity of zooplankton communities

2019 ◽  
Vol 28 (7) ◽  
pp. 1815-1835 ◽  
Author(s):  
Wojciech Krztoń ◽  
Joanna Kosiba ◽  
Agnieszka Pociecha ◽  
Elżbieta Wilk-Woźniak
Keyword(s):  
Functional Diversity ◽  
Cyanobacterial Blooms ◽  
Zooplankton Communities

Functional diversity of zooplankton communities in two tropical estuaries (NE Brazil) with different degrees of human-induced disturbance

2017 ◽  
Vol 129 ◽  
pp. 46-56 ◽  
Author(s):  
Helena Veríssimo ◽  
Joana Patrício ◽  
Érica Gonçalves ◽  
Gustavo C. Moura ◽  
José Etham L. Barbosa ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Tropical Estuaries ◽  
Zooplankton Communities

The role of fish in cyanobacterial blooms in Australia

1994 ◽  
Vol 45 (5) ◽  
pp. 905 ◽  
Author(s):  
PC Gehrke ◽  
JH Harris
Keyword(s):  
Freshwater Fish ◽  
Trophic Interactions ◽  
Cyanobacterial Blooms ◽  
Native Fish ◽  
Fish Stocks ◽  
Natural Predator ◽  
Fish Grazing ◽  
Zooplankton Communities ◽  
Alternative Solutions

Potential pathways for interaction between fish and cyanobacteria include fish grazing directly on cyanobacteria, fish preying on grazers of cyanobacteria, fish supplying nutrients through excretion, fish providing nutrients by resuspending sediments, and fish altering the availability of nutrients and light by damaging macrophytes. The dominant interactions in Australia are likely to be through pathways that increase the availability of nutrients at the bottom of the food web. Carp probably contribute to these pathways more than do other species by excreting nutrients, resuspending sediments and damaging macrophytes. Further research, on both alien and native fish species, is needed to quantify these processes. Grazing of cyanobacteria by fish is probably trivial because freshwater fish in Australia lack mechanisms to process cyanobacterial cells effectively. Trophic interactions between planktivorous fish, zooplankton and cyanobacteria require closer study to assess the potential for preventing cyanobacterial blooms by manipulating natural predator communities in Australia. However, the need to protect and strengthen native fish stocks precludes removal of native fish to reduce predation pressure on zooplankton communities. Alternative solutions that combine control of nutrients entering waterways and removal of carp have a higher likelihood of success.

Salinity shapes zooplankton communities and functional diversity and has complex effects on size structure in lakes

Hydrobiologia ◽  
2018 ◽  
Vol 813 (1) ◽  
pp. 237-255 ◽  
Author(s):  
María Florencia Gutierrez ◽  
Ülkü Nihan Tavşanoğlu ◽  
Nicolas Vidal ◽  
Jinlei Yu ◽  
Franco Teixeira-de Mello ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Size Structure ◽  
Zooplankton Communities

scholarly journals Assessing the impacts of mining activities on zooplankton functional diversity

2016 ◽  
Vol 28 (0) ◽  
Author(s):  
Francisco Wagner Araujo Moreira ◽  
Mariângela Garcia Praça Leite ◽  
Maria Augusta Gonçalves Fujaco ◽  
Fellipe Pinheiro Chagas Mendonça ◽  
Larissa Paraguassú Campos ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Heavy Metal Contamination ◽  
Environmental Changes ◽  
Single Species ◽  
Zooplankton Biomass ◽  
Feeding Guilds ◽  
Mining Activities ◽  
Iron Extraction ◽  
High Concentrations ◽  
Zooplankton Communities

Abstract Aim Mining activities generate countless environmental impacts, including heavy-metal contamination, sorting and increased turbidity. In aquatic ecosystems these impacts can drastically affect the initial links of the food chain, such as zooplankton. Methods To evaluate how the different mining activities can influence the structure and functional diversity of zooplankton, we investigated the geochemical characteristics of the water and sediment in two small impoundments impacted by different mining activities (kaolin and iron extraction). We also explored zooplankton composition, species diversity and functional diversity (feeding guilds taxa). Results As expected, the water and the sediment of both of the reservoirs showed high concentrations of trace elements, particularly Al, Ba, Fe, Mg, Mn, Sr and Zn. Zooplankton biomass and diversity were markedly reduced (< 12 μg.DW.L-1 and H’ < 1.5, respectively), and negatively correlated with turbidity and total suspended solids. Small microphages dominated the trophic composition of zooplankton, and an alternation of trophic guilds was not observed, since the dynamics of raptorial organisms was essentially linked to the temporal fluctuation of a single species of rotifer (Polyarthra cf. dolichoptera). Conclusions In addition to changes in the aquatic habitat and zooplankton composition, the functional niches were also affected by the mining impacts. The use of the functional diversity analysis can emerge as a valuable approach to understand how zooplankton communities respond to drastic environmental changes.

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

2009 ◽  
Vol 38 (2) ◽  
Author(s):  
Natalia Kuczyńska-Kippen ◽  
Barbara Nagengast ◽  
Tomasz Joniak
Keyword(s):  
Water Bodies ◽  
Small Water ◽  
Biometric Parameters ◽  
Zooplankton Communities ◽  
The Impact ◽  
Small Water Bodies

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

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