poster list - abevents

Aquatic ecosystem health in a changing environment :SASAqS Congress 2019

Presenter’s Name Theme Title

1 Sive Nomana

Ecosystem conservation

and restoration

Assessment of heavy metals in water and sediment of the Mthatha River.

2 Lesley Keay The identification of rivers responsible for the organic pollution of the Hartbeespoort Dam (South Africa): A case study.

3 Makubu Mokgawa Use of Oreochromis mossambicus (Peters, 1852) as a means to control algae used to extract nutrients from domestic wastewater.

4 Magdeline TakaloAssessment of metal concentration in the water and tissues of the African catfish, Schilbe intermedius from Tzaneen Dam, Limpopo, South Africa.

5 Gavin Tweddle The influence of season, spatial variability and habitat type on the ichthyofauna within the Richards Bay Harbour.

6 Leon BarkhuizenConservation status of the common rock catfish Austroglanis sclateri (Boulenger, 1901) in the Free State Province: least concern or threatened?

7 Nombini Z Gono

Climate and the changing environment

Spatial and temporal trends in water quality along the Mthatha River, Eastern Cape, South Africa.

8 Khulukazi Hlalukana

Flood risk assessment using Remote Sensing and GIS: A case study of Richards Bay, KwaZulu Natal Province, South Africa.

9 Vuyokazi Nibe Gender-based response of Helcion concolor to seasonal fluctuations along the Wild Coast of South Africa.

10 Nonkanyiso Zungu Climate change effects on the composition of sensitive mountain stream macroinvertebrates of the CFR.

11 Mosihla F Mokumo

Bio-indicators

and ecotoxicol-

ogy

Application of a health assessment index and the inverted parasite index to determine health status of Hydrocynus vittatus from Schroda Dam, South Africa.

12 Omega Ndongeni Heavy metal distribution in mussel Perna perna along the Eastern Cape coast of South Africa.

13 Siyasanga Zoko Heavy metals concentration and distribution in seawater, tissues and shells of Scutellastra longicosta along the Wild Coast.

14 Simone Dahms-Verster

Biomarker responses in adult Xenopus laevis after acute and chronic exposure to vanadium pentoxide (V2O5).

15 Gregg van Rensburg

Acute toxicity of the pesticide atrazine to the physiology of a freshwater decapod, Caridina africana.

16 Sophy NukeriBioassessment of water quality using macroinvertebrates as bioindicators of pollution in Spekboom River, Limpopo Province, South Africa.

17 Tebatso V MmakoAssessment of water and sediment quality using benthic aquatic macro-invertebrates as bioindicators in the Dwars River, Olifants River System, Limpopo province.

POSTER LIST


Time SUNDAY14:00 Registration opens16:00 Welcome event: “Spots and feathers”17:30 Welcome dinner

MONDAYBreakfast

Venue room: Rhino Run and Bush Willow

Venue room: Nyala Nook

Time MONDAY - Key Note SessionChairperson:

Joseph Sara/Wilmien Luus-Powell08:00 Housekeeping

08:15Conference officially opened by the Executive Dean of the Faculty of Science and Agriculture, University of Limpopo. Prof. Hlengani Siweya

08:30

Keynote: Paul Oberholster - Longitudinal trends in biota assemblage and water chem-istry over space and time in the upper Olifants River catchment.

09:10

Key Note: Hugo Retief - Designing back from practice: Keeping the Olifants River and benefits flowing through systemic, collective action approaches during the worst drought on record.

09:50

Key Note: Neil Rose - Indicators of contamination in contrasting lake sediment records from Mpumalanga, South Africa and Maloti Mountains, Lesotho.

10:30 Morning TeaConservation of freshwater ecosystems and

species diversityEcotoxicology

Chairperson: Robin Peterson

Chairperson: Willem Smit/Joseph Sara

11:15

Dale Kindler - Fish species composition of the upper reaches of the Limpopo River and water quality trends, Lephalale, South Africa.

Ruan Gerber - Bioaccumulation of persistent organic pollutants and their trophic transfer through an aquatic food web: Risks to the ecological integrity as well as rural communities reliant.

11:30

Celine Hanzen - A quiet life in a ferocious river: spatial ecology of freshwater eels (Anguilla spp.) in the Thukela River.

Irene Barnhoorn - Herbicides, fungicides and pesticides in water and fish tissues from a highly utilized freshwater impoundment surrounded by urban and agricultural land.

11:45

Manda Kambikambi - Evaluation of the nomenclatural status of the synonyms of Enteromius anoplus (Weber, 1987) (Teleostei, Cyprinidae).

Albert Myburgh - Ecological responses to the nutrient gradient in the middle Olifants River, Mpumalanga and Limpopo provinces, South Africa.

PROGRAMME

SASAqS Congress 2019: Aquatic ecosystem health in a changing environment

Time MONDAY - Key Note Session

12:00

Deidre West - Taxonomic account and distribution of zooplankton of the Phongolo River and associated floodplains, Ndumo Game Reserve, South Africa.

Divan van Rooyen - Metal bioaccumulation across different functional feeding groups of fishes from the lower Phongolo floodplain system.

12:15

Ncumisa Matam - Quantifying fisheries resource use from publicly accessible dams in the Makana municipal area, Eastern Cape, South Africa.

Musa Mlambo - Drakensberg-Maluti Mountain: a source of incredible biodiversity, now potentially threatened by gas fracking.

12:30 LunchBiomarkers, bioindicators and

ecotoxicologyConservation and restoration of Marine and

Estuarine systems Chairperson:

Wynand MalherbeChairperson:

Irene Barnhoorn

13:30

Rian Pienaar - The use of Clarias gariepinus and associated internal parasites as bioindicators of metal pollution in a subtropical ecosystem.

Mandla Magoro - Fishes and tadpoles as indicators of the transition from micro-outlets to micro-estuaries in the Eastern Cape Province, South Africa.

13:45Liam Connell - A biomarker assessment of Clarias gariepinus from the Vaal River system, South Africa.

Senzo Cebekhulu - Recruitment Patterns of Selected Mangrove Forests in KwaZulu-Natal, South Africa.

14:00Candice van Rensburg - Nematodes as bio-indicators of the Seekoeivlei Wetland, South Africa.

Joelene Govender - Understanding mangrove pollution in the context of disturbance: A South African case study.

14:15Nomvula Shakwane - The uses of fish as a bioindicators of aquatic ecosystem health linked to tourism surrounding Loskop Dam.

Jessica Els - Carbon storage of seagrass and salt marsh habitats – towards the quantification of ecosystem services.

14:30

Gyrhaiss Kasembele - Biological assessment of mining pollution in the Lufira River system (Haut-Katanga, DR Congo) using the Blunt-toothed African catfish, Clarias ngamensis Castelnau, 1861 (Teleostei: Clariidae) with report on its monogenean gill parasites.

Joshua Izegaegbe - Trace metal contamination in Mhlathuze Estuary, South Africa: Implication on conservation status.

14:45

Byron Bester - A lucrative livelihood or an invisible epidemic? Evidence of elevated mercury levels within fish populations in artisanal mining area in western Mali.

Zamavuso Tshazi - Application of Geospatial Techniques to Estimate the Concentration of Suspended Sediments in Umzimvubu Estuary, Eastern Cape.

15:00 Afternoon TeaEcosystem conservation, restoration and

managementEcotoxicology and the environment

Chairperson: Darragh Woodford

Chairperson: Hermien Roux

15:30

Samuel Motitsoe - Trophic dynamics in alien invasive macrophyte dominated aquatic ecosystem special emphasis to ecosystem structure and functioning.

Nico Wolmarans - Assessing the effects of DDT exposure on behavioural predator-prey interactions between Xenopus laevis and Culex sp. larvae.

15:45

Matthew Burnett - FISHTRAC: A robust tool to monitor water quality, flows and ecosystem response to environmental changes in real time, remotely.

Richard Greenfield - A preliminary investigation of the possible endocrine disrupting properties of vanadium pentoxide (V2O5) in a native amphibian species.

16:00Vusi Mthombeni - Size-selective predation of Oreochromis mossambicus (Pisces: Cichlidae) by Xenopus laevis (Amphibia: Pipidae).

Christopher Curtis - Trace metal contami-nants associated with gold mining in sediments of dams and pans across Benoni, Ekurhuleni.

16:15 Poster Session19:00 Supper


TUESDAYBreakfast



Time TUESDAY - Key Note SessionChairperson: Joseph Sara

08:30 Housekeeping

08:40

Key Note: Stephan Woodborne - Of Baobabs and Crocodiles: Temporal and spatial perspectives on river ecology in Southern Africa through an isotope lens.

09:20Key Note: Tom Buijse - Restoring connectivity and gradients in heavily modified rivers and deltas in Europe.

10:00

Plenary: Albert Chakona - Evidence of hidden diversity and taxonomic conflicts in five stream fishes from the Eastern Zimbabwe Highlands freshwater ecoregion.

10:25

Plenary: Darragh Woodford - South African savanna biosphere reserves: the answer to preserving the fragile waters of the Limpopo River basin?

10:50 Morning TeaBiosphere/ecosystem conservation and

restorationFish passage and river connectivity

Chairperson: Stephan Woodborne

Chairperson: Kerry Brink/Joseph Sara

11:15

Jonathan Levin - Assessing the role of biosphere reserves in maintaining aquatic ecosystem integrity using stable isotope approaches.

Kerry Brink - Migratory Freshwater Fishes:Status Update in Southern Africa and GlobalSwimways Initiative.

11:30

Wynand Malherbe - Macroinvertebrate diversity, community and trait composition of selected Ramsar wetlands in subtropical southern Africa.

Gordon O’Brien - River connectivity and fish migrations: Lessons learnt from regional scale E-flow assessments in Africa.

11:45Tiyisani Chavalala - Nutrient fluxes between aquatic and terrestrial ecosystems: the role of insects in South African Rivers.

Robin Petersen - A simple and effective perspective of improving river connectivity in Kruger National Park.

12:00Johannes Le Roux - Ecology and efficiency of a constructed treatment wetland treating the wastewater of a crocodile farm in Botswana.

Discussion

12:15

Nonjabulo Matomela - Assessment of community structure and trophic interrelationships in three differently impacted Afromontane headwater streams in the Amatolo-Winterberg ecoregion.

12:30 LunchClimate and the environment Invasive species

Chairperson: Richard Greenfield

Chairperson: Hlulani Hlungwani/Millicent Kekana

13:30

Helen Dallas - Environmental water temperature guidelines for perennial rivers: A protocol and tools for setting water temperature targets in South Africa.

Wilbert Kadye - Dis-entangling ecological niche patterns of native and non-native fishes within an invaded African river system.


Time TUESDAY - Key Note Session

13:45

Mohammed Kajee - The status, distribution and abundance of South African freshwater fishes: A prelude to predicting the impacts of climate change on selected South African freshwater fish.

Josephine Pegg - Controlling invasive carp in a natural lake ecosystem – lessons in management.

14:00

Matthew Bird - The influence of thermal history and acclimation temperature on upper thermal tolerances of selected insects from Magaliesberg mountain streams.

Leon Barkhuizen - Red swamp crayfish Procambarus clarkii: second record of a wild population in South Africa.

14:15

Daniel Lemley - Physico-chemical and microalgal gradients change rapidly under the influence of drought and anthropogenic stressors.

Hanro Pearson - The impacts of an invasive snail, Tarebia granifera (Lamarck, 1822) on aquatic community structures: A mesocosm approach.

14:30Lizaan de Necker - Ecological resilience of a large naturally saline pan through a prolonged drying event.

Getrude Tshithukhe - Invasive alien macrophyte species for phytoremediation in aquatic environments.

14:45

Vincent Egan - Trends in Limpopo’s Nile crocodile (Crocodylus niloticus) populations: Some ups, some downs and a bit more of the same.

Andre Hoffman - The use of spear fishing as a management tool to control largemouth bass in Loskop Dam – a preliminary study.

15:00 Afternoon TeaClimate and the environment Aquatic parasites

Chairperson: Abe Addo-Bediako

Chairperson: Ali Halajian

15:30

Anrich Kock - The effect of controlled flood releases from the Pongolapoort Dam on the taxonomic richness of diatoms in the Phongolo River.

Iva Prikrylova - Size does not matter: Small Mediterranean gobiids as hosts for diverse monogenean parasites of the genus Gyrodactylus von Nordmann, 1832 (Monogenea: Platyhelminthes).

15:45

Pfananani Ramulifho - The influence of flow and water temperature on Mayfly (Ephemeroptera, Insecta) community structures in the Luvuvhu River catchment.

Liesl Van As - A non-alien, fish lice of the genus Argulus Müller, 1785 found on a fish farm.

16:00

Samuel Motimele - The human health risk associated with consuming Oreochromis mossambicus (Peters, 1852) and Labeo rosae Steindachner, 1894 from Flag Boshielo Dam in relation to changing water levels.

Luthando Bopheka - Possible life cycle of Trypanosoma mukasai in Free State Rivers Systems.

16:15

Rochen Wiltshire - Assesment of the impacts of sea level rise on the Umzimvubu estuary in the Eastern Cape Province.

Dikeledi Chauke - The first report of the monogenean Acolpenteron ureteroecetes in Micropterus salmoides (Perciformes: Centrarchidae) from selected dams, Limpopo Province.

17:00-19:00

(Screening of - “Love Flows Documentary” produced by the World Fish Migration Foundation)

19:00 Supper


WEDNESDAYBreakfast



Time WEDNESDAY - Key Note Session08:30 Housekeeping

Chairperson: Joseph Sara

08:40Key Note: Brian Murphy - Fish for People: Creative, participative, and science-based planning to optimize inland fisheries benefits.

09:20Plenary: Olaf Weyl - Opportunities, threats and research requirements for developing sustainable inland fisheries in South Africa.

09:45

Plenary: Helen Dallas - Developing a freshwater biodiversity information system for evaluating long-term change in South African rivers.

10:10

Plenary: Victor Wepener -Ecological risk assessment as an environmental management tool in South Africa: why is it not embraced locally?

10:30 Morning TeaMonitoring, haversting and utilisation of

aquatic resourcesChairperson:

Josephine Pegg

11:00

Motebang Nakin - Spatial variability in exploited mollusc populations along the Eastern Cape coast: Further evidence of a mismatch between exploitation effort and stock size.

Application of indices used in the water sector (Workshop)

Facilitator: Wynand Vlok

11:15

Munetsi Zvavahera - Investigations into the effect of the environment on the life-history strategies and morphometric traits of the estuarine roundherring, Gilchristella aestuaria (Pisces: Clupeidae).

Wynand Vlok: Introductory remarks andpurpose of workshop

Neels Kleynhans: Summary of REMP (RiverEcostatus Monitoring Programme)

Barbara Weston: Summary of RQO andEcological Reserve process and Gazettes

Christa Thirion: MIRAI: context and purpose

11:30

Hlulani Hlungwani - Establishing the fisheries potential of Flag Boshielo Dam based on the combined data collected from Flag Boshielo and Loskop dams.

11:45Vuyisile Dlamnini - Contribution of subsistence fisheries to the well-being of communities in the Lower Komati, South Africa.

12:00

Angus van Wyk - The potential of Baited Remote Underwater Video System (BRUVS) in Lake Malawi for the monitoring of Chambo Oreochromis (Nyasalapia) spp.

12:15

Vincent Egan - Definition and practical application of niche models to practical conservation management of Nile crocodiles (Crocodylus niloticus) in Limpopo.

12:30 Lunch


13:30 Presentation by USAID

Application of indices (Conclusion and resolution of Workshop)

13:4514:00

Game Drive 14:00 - 17:00

Elephant interaction: 15:00 - 16:00

14:3015:0015:15 Afternoon Tea

16:15 Society AGM19:00 Gala DinnerTime THURSDAY

Breakfast8:00

Game Drive: 08:00 - 11:00

Elephant interaction: 09:00 - 10:00

9:0010:0011:0011:30 Depart from venue

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