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Article
Curbing the major and growing threats from invasive alien species is urgent and achievable
Although invasive alien species have long been recognized as a major threat to nature and people, until now there has been no comprehensive global review of the status, trends, drivers, impacts, management and...
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Article
Inland recreational fisheries contribute nutritional benefits and economic value but are vulnerable to climate change
Inland recreational fishing is primarily considered a leisure-driven activity in freshwaters, yet its harvest can contribute to food systems. Here we estimate that the harvest from inland recreational fishing ...
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Article
Open AccessGlobal dataset of species-specific inland recreational fisheries harvest for consumption
Inland recreational fisheries, found in lakes, rivers, and other landlocked waters, are important to livelihoods, nutrition, leisure, and other societal ecosystem services worldwide. Although recreationally-ca...
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Article
Possible impacts of non-native plant, pathogen, invertebrate and fish taxa on the indigenous ichthyofauna in South African estuaries: a preliminary review
We review the possible impacts of non-native biota on the indigenous fishes of South African estuaries, including macrophytes, algae, pathogens, invertebrates, and fishes. Freshwater macrophytes are one of the...
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Article
Prey type and temperature influence functional responses of threatened endemic Cape Floristic Ecoregion fishes
Shifts in temperature as a result of climate change play an important role in the long-term dynamics of resource use and resulting species interactions. Functional responses can give ecologically relevant insi...
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Article
Differential use of artificial habitats by native and non-native fish species in Neotropical reservoirs
The use of artificial habitats as tool for management and conservation of lentic freshwater ecosystems has been most studied in North America, with dominance of Centrarchidae fish. Contrary to north temperate ...
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Article
Pseudodactylogyrus anguillae (Yin & Sproston, 1948) from the giant mottled eel Anguilla marmorata Quoy & Gaimard, 1824, in the Phongolo River, South Africa: an invader on the African continent
The global invasive anguillid gill parasite Pseudodactylogyrus anguillae (Yin and Sproston, 1948) has only recently been documented from eels in South Africa. As there is no known eel trade in South Africa, the s...
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Article
Open AccessEffects of climate and land-use changes on fish catches across lakes at a global scale
Globally, our knowledge on lake fisheries is still limited despite their importance to food security and livelihoods. Here we show that fish catches can respond either positively or negatively to climate and l...
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Article
Open AccessInvasion syndromes: a systematic approach for predicting biological invasions and facilitating effective management
Our ability to predict invasions has been hindered by the seemingly idiosyncratic context-dependency of individual invasions. However, we argue that robust and useful generalisations in invasion science can be...
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Article
Open AccessAssessing multiple predator, diurnal and search area effects on predatory impacts by ephemeral wetland specialist copepods
Predator–prey interaction strengths can be highly context-dependent. In particular, multiple predator effects (MPEs), variations in predator sex and physical habitat characteristics may affect prey consumption...
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Article
Open AccessSex demographics alter the effect of habitat structure on predation by a temporary pond specialist
Habitat structure can profoundly influence interaction strengths between predators and prey. Spatio-temporal habitat structure in temporary wetland ecosystems is particularly variable because of fluctuations i...
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Article
Temperature regime drives differential predatory performance in Largemouth Bass and Florida Bass
Predation shapes community structures via direct and indirect mechanisms and it is an ecological imperative that predatory impacts are predicted. In this study, we used comparative functional responses (FRs) t...
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An Evaluation of the Impacts of Alien Species on Biodiversity in South Africa Using Different Assessment Methods
Studies of the impact of alien species on the environment are increasingly being carried out, and there has been ongoing debate about how to standardise the description of these impacts. This chapter evaluates...
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South Africa’s Pathways of Introduction and Dispersal and How They Have Changed Over Time
Alien taxa have been introduced to South Africa through a wide variety of pathways, and have subsequently been intentionally or accidentally dispersed across the country. While many introductions to South Afr...
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Chapter
Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa
Ecological interactions, especially those that are beneficial (i.e. mutualism) or detrimental (i.e. parasitism), play important roles during the establishment and spread of alien species. This chapter explores...
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Chapter
Alien Freshwater Fauna in South Africa
Seventy-seven alien freshwater species are currently naturalised in South Africa. This list includes 7 protozoan, 1 cnidarian, 2 cestode, 13 monogenean, 1 nematode, 1 oligochaete, 6 crustacean, 16 insect, 7 mo...
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Article
Open AccessA global review and meta-analysis of applications of the freshwater Fish Invasiveness Screening Kit
The freshwater Fish Invasiveness Screening Kit (FISK) has been applied in 35 risk assessment areas in 45 countries across the six inhabited continents (11 applications using FISK v1; 25 using FISK v2). The pre...
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Article
Assessing predator-prey interactions in a chemically altered aquatic environment: the effects of DDT on Xenopus laevis and Culex sp. larvae interactions and behaviour
Behavioural assays are used as a tool to understand ecotoxicological effects on organisms, but are often not applied in an ecologically relevant context. Assessment of the effect of chemical contaminants on be...
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Article
Using species-diagnostic SNPs to detail the distribution and dynamics of hybridized black bass populations in southern Africa
The widespread introduction of Largemouth Bass (Micropterus salmoides) and Florida Bass (M. floridanus) to establish sport fisheries represents a significant conservation concern given their role as apex predator...
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Article
Rapid recovery of macroinvertebrates in a South African stream treated with rotenone
South Africa’s Cape Fold Ecoregion supports a unique freshwater fish assemblage with many endemics. To mitigate impacts of alien invasive fishes on this unique assemblage, nature conservation authority CapeNat...
