The effect of the sampling scale on zooplankton community assessment and its implications for the conservation of temporary ponds in south-west Spain

2007 ◽  
Vol 17 (2) ◽  
pp. 175-193 ◽  
Author(s):  
Khalid Fahd ◽  
Margarita Florencio ◽  
Claudia Keller ◽  
Laura Serrano
Keyword(s):  
Zooplankton Community ◽  
Temporary Ponds ◽  
Community Assessment ◽  
South West ◽  
Sampling Scale

scholarly journals Zooplankton community structure from tropical temporary ponds during a flood period

Limnetica ◽  
2019 ◽  
Vol 38 (1) ◽  
pp. 189-211
Author(s):  
Karime de Araujo Paina ◽  
Maria da Graça Gama Melão
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Temporary Ponds ◽  
Zooplankton Community Structure ◽  
Flood Period

Influence of restoration age on egg bank richness and composition: an ex situ experiment

2020 ◽  
Vol 42 (5) ◽  
pp. 553-563
Author(s):  
Carla Olmo ◽  
MarÍa Antón-Pardo ◽  
Raquel Ortells ◽  
Xavier Armengol
Keyword(s):  
Zooplankton Community ◽  
Temporary Ponds ◽  
Ex Situ ◽  
Egg Bank ◽  
Hatching Time ◽  
Restoration Practices ◽  
Restoration Age ◽  
Abundance And Diversity ◽  
Different Characteristics ◽  
Full Reflection

Abstract Zooplankton community assembly after flooding in temporary ponds depends mostly on abundance and diversity of the dormant propagule bank. However, our understanding of the hatching patterns of zooplankton is imperfect. We performed an ex situ experiment to study the species composition and temporal sequence of zooplankton emergence from sediments in three ponds that were restored at different times: 1998, 2003 and 2007. The patterns of species hatching observed in our microcosms were compared with the emergent zooplankton community of their equivalent, synchronically inundated ponds. An escalation in species richness and a delay in hatching time were detected with increasing restoration age. In addition, some discrepancies between the egg bank and active populations were observed, especially in the oldest pond. This study illustrates the use of hatching experiments in comparing ponds with different characteristics. Nevertheless, egg bank hatching and water column sampling should complement each other in order to afford a full reflection of past diversity and contribute to a better understanding of the efficiency of restoration practices.

Effect of Spatial Variation on Zooplankton Community Assessment in Fishery Studies

Fisheries ◽  
2004 ◽  
Vol 29 (4) ◽  
pp. 17-22 ◽  
Author(s):  
Nathan W. Olson ◽  
Stephen K. Wilson ◽  
David W. Willis
Keyword(s):  
Spatial Variation ◽  
Zooplankton Community ◽  
Community Assessment

Application-rate-dependent impacts of a fire retardant on zooplankton community structure of temporary ponds

2005 ◽  
Vol 56 (2) ◽  
pp. 197 ◽  
Author(s):  
David G. Angeler ◽  
Silvia Martín ◽  
Marta Rodríguez ◽  
José M. Moreno
Keyword(s):  
Water Quality ◽  
Algal Growth ◽  
Fire Retardant ◽  
Zooplankton Community ◽  
Application Rate ◽  
Temporary Ponds ◽  
Temporary Pond ◽  
Fire Control ◽  
Zooplankton Community Structure ◽  
Application Rates

In the present study, we employed dry sediments in a temporary-pond microcosm experiment to evaluate the response of the zooplankton community after exposure to different application rates of the commercially available fire retardant, Fire-Trol 934. Application rates were selected to reflect ranges used during fire control/prevention operations in grasslands and shrublands in Mediterranean areas. Results show loss of water quality in terms of increased nutrient (total phosphorus and total nitrogen) concentrations, electrical conductivity and water colour. The magnitude of water-quality impact depended on FRC application rate and was most severe in the highest application rate treatment. The zooplankton community was significantly affected by the FRC treatments. In the control, a diverse assemblage of cladocerans, rotifers and ostracods developed, whereas the zooplankton community in all FRC treatments was depauperate, consisting only of a few species of rotifers. The lack of cladocerans, which are effective grazers of phytoplankton, could negatively affect ecosystem functioning and foster eutrophication effects through excessive algal growth, at least during the first weeks after temporary ponds fill with winter rains.

scholarly journals Zooplankton functional complementarity between temporary and permanent environments

2021 ◽  
Vol 33 ◽  
Author(s):  
Rayanne Barros Setubal ◽  
Reinaldo Luiz Bozelli
Keyword(s):  
Species Richness ◽  
Functional Diversity ◽  
Regional Scale ◽  
Zooplankton Community ◽  
Diversity Indices ◽  
Functional Trait ◽  
Temporary Ponds ◽  
Species Identity ◽  
Functional Complementarity ◽  
Functional Dispersion

Abstract: Aims This study aims to evaluate the functional complementarity of the zooplankton community between temporary ponds and permanent lagoons. We hypothesize that temporary environments will be functionally more diverse than permanent environments and will have different functional composition. Methods Five temporary ponds and five permanent lagoons were compared regarding their limnological characteristics, species richness, functional diversity indices and functional trait composition. Results No differences between ponds and lagoons were found regarding mean species richness and functional diversity. However, a larger number of species was found in the set of temporary environments i.e., although the mean richness was the same, the species' identity varied from one pond to another. Ponds showed greater variability in functional trait composition, resulting in significant differences in zooplankton functional dispersion. Ponds also presented a greater range of limnological characteristics. Conclusions Temporary and permanent environments present high limnological and functional complementarity, which make them important for maintaining biodiversity on a regional scale. Temporary environments seem to be refugees for species that do not settle in more stable environments because these species are more likely to colonize environments that periodically restart their successional trajectory. Therefore, actions that seek to preserve complementary environments are essential and urgent, especially those related to small and temporary environments.

Can fairy shrimps (Crustacea: Anostraca) structure zooplankton communities in temporary ponds?

2007 ◽  
Vol 58 (9) ◽  
pp. 827 ◽  
Author(s):  
Beatriz Sánchez ◽  
David G. Angeler
Keyword(s):  
Community Dynamics ◽  
Environmental Variability ◽  
Keystone Species ◽  
Zooplankton Community ◽  
Temporary Ponds ◽  
Temporary Wetland ◽  
Fairy Shrimps ◽  
Zooplankton Communities ◽  
High Degree

Predation and competition are recognised as strong community structuring forces, and these processes are often mediated by keystone species. However, the role of keystone species in the plankton of temporary wetlands has hardly been evaluated. In the present study, the potential structuring role of fairy shrimps (Anostraca, Branchiopoda) on temporary wetland zooplankton communities was assessed. Dry sediments were collected from randomly chosen temporary ponds in the Campo de Calatrava area (Central Spain), and these were rewetted in outdoor microcosms. Zooplankton community dynamics of three wetlands that lacked fairy shrimps (controls) were contrasted with three wetlands that contained Branchinecta orientalis (G. O. Sars) (treatment). ANOVA analyses showed no significant differences in zooplankton community metrics and in taxonomic groups between the controls and treatments. Analyses of similarity (ANOSIM) and similarity percentages (SIMPER) revealed significant differences and a high degree of community dissimilarity within and between treatment levels. The high degree of environmental variability between wetlands compromised the detection of the structuring role of fairy shrimps on zooplankton in the present study. Studies based on manipulative designs could be more appropriate to test for the keystone role of fairy shrimps in temporary wetland food webs. Replicated before-after control-impact (BACI) designs could be especially useful for understanding basic ecological processes and this knowledge could then be used for the development of sound management strategies of ecologically poorly understood temporary ponds.

Abstract #614 Pattern of Thyroid Disorders in Sagamu, South-West Nigeria

2019 ◽  
Vol 25 ◽  
pp. 317
Author(s):  
Ayotunde Ale ◽  
Opeyemi Aloro ◽  
Ayanbola Adepoju
Keyword(s):  
Thyroid Disorders ◽  
South West
Sign in / Sign up

Export Citation Format

Share Document