Overwintering Anuran Niche Preferences in a Series of Interconnected Ponds in Northwestern Florida

2019 ◽  
Vol 18 (2) ◽  
pp. 256
Author(s):  
Caleb M. Bomske ◽  
Nate Bickford
Keyword(s):  
Interconnected Ponds

scholarly journals Enhancing Ecoefficiency in Shrimp Farming through Interconnected Ponds

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Ramón Héctor Barraza-Guardado ◽  
José Alfredo Arreola-Lizárraga ◽  
Anselmo Miranda-Baeza ◽  
Manuel Juárez-García ◽  
Antonio Juvera-Hoyos ◽  
...  
Keyword(s):  
Culture System ◽  
Water Exchange ◽  
Nutrient Recycling ◽  
Traditional Culture ◽  
Shrimp Farming ◽  
Nitrogen Compounds ◽  
Intensive Culture ◽  
Production Parameters ◽  
Daily Water ◽  
Interconnected Ponds

The future development of shrimp farming needs to improve its ecoefficiency. The purpose of this study was to evaluate water quality, flows, and nitrogen balance and production parameters on a farm with interconnected pond design to improve the efficiency of the semi-intensive culture ofLitopenaeus vannameiponds. The study was conducted in 21 commercial culture ponds during 180 days at densities of 30–35 ind m−2and daily water exchange <2%. Our study provides evidence that by interconnecting ponds nutrient recycling is favored by promoting the growth of primary producers of the pond as chlorophylla. Based on the mass balance and flow of nutrients this culture system reduces the flow of solid, particulate organic matter, and nitrogen compounds to the environment and significantly increases the efficiency of water (5 to 6.5 m3 kg−1cycle−1), when compared with traditional culture systems. With this culture system it is possible to recover up to 34% of the total nitrogen entering the system, with production in excess of 4,000 kg ha−1shrimp. We believe that the production system with interconnected ponds is a technically feasible model to improve ecoefficiency production of shrimp farming.

ZOOPLANKTON METACOMMUNITY STRUCTURE: REGIONAL VS. LOCAL PROCESSES IN HIGHLY INTERCONNECTED PONDS

Ecology ◽  
2003 ◽  
Vol 84 (4) ◽  
pp. 991-1000 ◽  
Author(s):  
Karl Cottenie ◽  
Erik Michels ◽  
Nele Nuytten ◽  
Luc De Meester
Keyword(s):  
Metacommunity Structure ◽  
Interconnected Ponds

The relative importance of dispersal and local processes in structuring phytoplankton communities in a set of highly interconnected ponds

2008 ◽  
pp. ???-??? ◽  
Author(s):  
PIETER VANORMELINGEN ◽  
KARL COTTENIE ◽  
ERIK MICHELS ◽  
KOENRAAD MUYLAERT ◽  
WIM VYVERMAN ◽  
...  
Keyword(s):  
Relative Importance ◽  
Phytoplankton Communities ◽  
Interconnected Ponds

scholarly journals Zooplankton structure in two interconnected ponds: similarities and differences

2016 ◽  
Vol 74 (1) ◽  
pp. 6-13 ◽  
Author(s):  
Maria Špoljar ◽  
Tea Tomljanović ◽  
Tvrtko Dražina ◽  
Jasna Lajtner ◽  
Helena Štulec ◽  
...  
Keyword(s):  
Littoral Zone ◽  
Trophic Structure ◽  
Submerged Macrophytes ◽  
Fish Predation ◽  
Predation Pressure ◽  
Summer Period ◽  
Zooplankton Structure ◽  
Similarities And Differences ◽  
Abundance And Diversity ◽  
Interconnected Ponds

Abstract The research of zooplankton diversity, abundance and trophic structure was conducted during the summer period in pelagial zone on the longitudinal profile of the Sutla River Backwater. Investigated site consists of two interconnected basins: transparent Upper Basin with submerged macrophytes and turbid Lower Basin without macrophytes in the littoral zone. In the Upper Basin, abundance and diversity of zooplankton in the pelagial was higher in comparison to the Lower Basin, with prevailing species of genus Keratella as microfilter-feeder, and genera of Polyartha and Trihocerca as macrofilter-feeder rotifers. On the contrary, in the Lower Basin, crustaceans dominated in abundance. Microfilter-feeder cladoceran (Bosmina longirostris) and larval and adult stages of macrofilter-feeder copepod (Macrocyclops albidus) prevailed in the Lower Basin. Fish predation pressure was more pronounced in the pelagial of the Upper Basin, indicated by low cladoceran abundance in the surface layer. Although the studied basins were interconnected, results indicate significant (Mann-Whitney U test, p < 0.05) differences in the zooplankton structure as a potential result of the macrophyte impact on environmental conditions and fish predation pressure.

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