Impact of Oreochromis niloticus (Linnaeus, 1758) (Pisces: Cichlidae) invasion on taxonomic and functional diversity of native fish species in the upper Kabompo River, northwest of Zambia DOI
Arthertone Jere, Wilson Jere, A. H. N. Mtethiwa

и другие.

Ecology and Evolution, Год журнала: 2021, Номер 11(18), С. 12845 - 12857

Опубликована: Авг. 19, 2021

Abstract Invasive alien species have been revealed to drastically alter the structure of native communities; however, there is scarce information on whether taxonomic and functional spaces occupied by are equally filled exotic species. We investigated diversity understand impact Oreochromis niloticus in upper Kabompo River, northwest Zambia using indices. To achieve this, two tests were performed (Test 1, compared natives invaded uninvaded sections; Test 2, section). A total 17 collected for computation, out which fourteen (14) trait measurements linked feeding, locomotion, life history strategy taken. Findings that values changed with invasion both tests. Taxonomic was 15% more than sections 1 not consistent across sampling points section 2. Invaded areas taxonomically less diverse, but functionally diverse The analysis similarity nonmetric multidimensional scaling no difference Bray–Curtis assemblages Our findings often occupy unfilled gaps communities species; this achieved occupying spaces. Overall, changes documented here partially confirmed impacts O . invasion. Therefore, we recommend a multifaceted approach assess cumulative

Язык: Английский

Biological Invasions in South Africa: An Overview DOI Creative Commons
Brian W. van Wilgen, John Measey, David M. Richardson

и другие.

Springer eBooks, Год журнала: 2020, Номер unknown, С. 3 - 31

Опубликована: Янв. 1, 2020

Язык: Английский

Процитировано

82
The economic costs of biological invasions in Africa: a growing but neglected threat? DOI Creative Commons
Christophe Diagne, Anna J. Turbelin, Desika Moodley

и другие.

NeoBiota, Год журнала: 2021, Номер 67, С. 11 - 51

Опубликована: Июль 29, 2021

Biological invasions can dramatically impact natural ecosystems and human societies. However, although knowledge of the economic impacts biological provides crucial insights for efficient management policy, reliable syntheses are still lacking. This is particularly true low income countries where resources insufficient to control effects invasions. In this study, we relied on recently developed "InvaCost" database – most comprehensive repository monetised invasive alien species worldwide produce first synthesis costs African continent. We found that reported ranged between US$ 18.2 billion 78.9 1970 2020. represents a massive, yet highly underestimated burden countries. More alarmingly, these exponentially increasing over time, without any signs abatement in near future. The were mostly driven by damage caused invaders rather than expenses incurred management. trend was skewed towards few regions (i.e. Southern Eastern Africa) activity sectors agriculture) small number taxa mainly three insect pests: Chilo partellus , Tuta absoluta Spodoptera frugiperda ). also highlight crucial, large gaps current need be bridged with more widespread research effort actions across Finally, our study support developing implementing preventive measures as well integrated post-invasion at both national regional levels. Considering complex societal realities countries, currently neglected problem should become priority sustainable development.

Язык: Английский

Процитировано

71
The Biogeography of South African Terrestrial Plant Invasions DOI Creative Commons
David M. Richardson, Llewellyn C. Foxcroft, Guillaume Latombe

и другие.

Springer eBooks, Год журнала: 2020, Номер unknown, С. 67 - 96

Опубликована: Янв. 1, 2020

Язык: Английский

Процитировано

69
A review of the impacts of biological invasions in South Africa DOI
Brian W. van Wilgen, Tsungai A. Zengeya, David M. Richardson

и другие.

Biological Invasions, Год журнала: 2021, Номер 24(1), С. 27 - 50

Опубликована: Сен. 1, 2021

Язык: Английский

Процитировано

45
Diversity, distribution and extinction risk of native freshwater fishes of South Africa DOI
Albert Chakona, Martine S. Jordaan, D. Raimondo

и другие.

Journal of Fish Biology, Год журнала: 2022, Номер 100(4), С. 1044 - 1061

Опубликована: Фев. 16, 2022

Extinction risk for 101 valid species and 18 unique genetic lineages of native freshwater fishes South Africa was assessed in 2016 following the IUCN Red List criteria. An additional five (three new that were described two revalidated subsequent to assessments) present study. A synthesis outcome assessments 106 indicates 45 (36%) Africa's fish taxa are threatened (7 Critically Endangered, 25 13 Vulnerable). Of remaining taxa, 17 (14%) listed as Near Threatened, 57 (46%) Least Concern (4%) Data Deficient. More than 60% endemic threatened. The Cape Fold Ecoregion has highest proportion (67%) due existence a assemblage narrow-range species. Galaxias Pseudobarbus have number highly most these genera classified either CR or EN. Major threats country invasive species, deterioration water quality, impoundments excessive abstraction, land use changes modification riverine habitats. Immediate conservation efforts should focus on securing remnant populations preventing threat status, because recovery is rare. Accurate delimitation boundaries, mapping their distribution ranges, improved knowledge pressures long-term monitoring population trends need be prioritised generate credible data 2026 status designation important areas part National Freshwater Ecosystem Priority Areas (NFEPA) initiative.

Язык: Английский

Процитировано

36
Wetland Resources in South Africa: Threats and Metadata Study DOI Creative Commons
Adeyemi Ojutalayo Adeeyo,

Stanley S. Ndlovu,

Linda M. Ngwagwe

и другие.

Resources, Год журнала: 2022, Номер 11(6), С. 54 - 54

Опубликована: Июнь 3, 2022

Wetlands are important ecosystems with physical and economic benefits. However, many reports confirm the drastic loss of wetlands due to urbanisation anthropogenic activities in parts world. This study focused on present-day state Republic South Africa. A meta-analysis was performed elucidate distribution level protection selected wetlands. The classification existing threat against were reported. Africa grossly endangered by human pollution, developmental activities, invasive plants. From data obtained, about 47.89% reported have a low thus susceptible threats. African Department Environmental Affairs protects most (28.17%) country. Major weaknesses identified for wetland degradation ignorance people benefits weak implementation frameworks policies that currently exist. impact legislations preservation is presented as well need community education environmental degradation. Therefore, current several calls urgent attention, there strengthening laws order prevent damage extinction.

Язык: Английский

Процитировано

31
Biological Invasions in South Africa’s Urban Ecosystems: Patterns, Processes, Impacts, and Management DOI Creative Commons
Luke J. Potgieter, Errol Douwes, Mirijam Gaertner

и другие.

Springer eBooks, Год журнала: 2020, Номер unknown, С. 275 - 309

Опубликована: Янв. 1, 2020

Язык: Английский

Процитировано

36
Invasive alien plants and weeds in South Africa: A review of their applications in traditional medicine and potential pharmaceutical properties DOI
Lyndy J. McGaw,

Aitebiremen Gift Omokhua-Uyi,

J.F. Finnie

и другие.

Journal of Ethnopharmacology, Год журнала: 2021, Номер 283, С. 114564 - 114564

Опубликована: Авг. 24, 2021

Язык: Английский

Процитировано

28
Preventing species extinctions: A global conservation consortium for Erica DOI
Michael D. Pirie, Robert Blackhall-Miles,

Greg Bourke

и другие.

Plants People Planet, Год журнала: 2022, Номер 4(4), С. 335 - 344

Опубликована: Апрель 20, 2022

Societal Impact Statement Human‐caused habitat destruction and transformation is resulting in a cascade of impacts to biological diversity, which arguably the most fundamental species extinctions. The Global Conservation Consortia (GCC) are means pool efforts expertise across national boundaries between disciplines attempt prevent such losses focal plant groups. GCC Erica coordinates an international response extinction threats one group, heaths, or heathers, hundreds found only South Africa's spectacularly diverse Cape Floristic Region. Summary Effectively combating biodiversity crisis requires coordinated conservation efforts. Botanic Gardens International (BGCI) numerous partners have established collaboratively develop implement comprehensive strategies for priority threatened Through these networks, institutions with specialised collections staff can leverage ongoing work optimise impact species. genus poses challenge similar scale that largest other Rhododendron , but almost 700 around 800 known concentrated single hotspot, Region (CFR) Africa. Many be threatened, suffering immediate destruction, invasive species, changes natural fire regimes climate change. Efforts counter face general challenges: disproportionate burden situ falling on minority community, limited knowledge species‐rich groups, shortfalls assessing monitoring threat, lack resources limitations ex communicating value diversity public who may never encounter it wild. brings together world's experts, conservationists botanical including botanic gardens, seed banks organisations Africa, Madagascar, Europe, United States, Australia beyond. We pooling our unique sets skills address challenges working groups prioritisation, situ, horticulture, banking, systematic research outreach.

Язык: Английский

Процитировано

17
Assessment of heavy metals and microbial loads in Nile tilapia (Oreochromis niloticus) from different farms and rivers DOI Creative Commons
Raheel Suleman, Muhammad Zahoor,

Muhammad Awais Qarni

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 11, 2025

Metal contamination in water bodies globally poses risks to ecosystems and human health. In Pakistan, sources are impacted by toxic metals microbial pollutants, affecting Nile Tilapia, a widely consumed fish Punjab. This study assessed heavy metal microbiological tilapia from the Ravi Chenab Rivers nearby farms (Head Muhammad Wala, Shorkot, Rangpur). Heavy metals, including arsenic, chromium, cadmium, mercury lead, were analyzed using Atomic Absorption Spectroscopy, Arsenic ranged lowest 0.15 mg/kg (scales) highest 1.38 (Liver), while Chromium was found be 73 321.83 (Liver) Riverine Fish, whereas As 0.05 (flesh) 0.92 (gills),while 92 (skin) 166.67 (Liver). showed elevated levels as compared farmed fish. Moreover, River also loads, total plate counts of 15,335 cfu/g, Salmonella at 373.11 cfu/25 g, E. coli 76.55 had significantly higher coliform count (p < 0.05). These findings suggest that less contaminated due reduced exposure industrial effluents, emphasizing need for further research on other commonly species high-industrial regions.

Язык: Английский

Процитировано

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