dc.contributor.author |
Van Niekerk, Lara
|
|
dc.contributor.author |
Taljaard, Susan
|
|
dc.contributor.author |
Lamberth, SJ
|
|
dc.contributor.author |
Adams, JB
|
|
dc.contributor.author |
Weerts, Steven P
|
|
dc.contributor.author |
MacKay, CF
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|
dc.date.accessioned |
2022-07-04T06:27:20Z |
|
dc.date.available |
2022-07-04T06:27:20Z |
|
dc.date.issued |
2022-05 |
|
dc.identifier.citation |
Van Niekerk, L., Taljaard, S., Lamberth, S., Adams, J., Weerts, S.P. & MacKay, C. 2022. Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience. <i>African Journal of Aquatic Science.</i> http://hdl.handle.net/10204/12447 |
en_ZA |
dc.identifier.issn |
1727-9364 |
|
dc.identifier.issn |
1608-5914 |
|
dc.identifier.uri |
https://doi.org/10.2989/16085914.2022.2041388
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/12447
|
|
dc.description.abstract |
Globally, the ability of estuaries to sustain functionality and productivity is deteriorating rapidly under ever-increasing anthropogenic pressures. We present a systematic approach to identify, characterise and rank global pressures affecting estuaries. Six main pressure categories are reviewed: freshwater flow modification; pollution; exploitation of fish and invertebrates; land-use and development; manipulation of inlets; and biological invasions (plants and fish). Patterns in pressure effects are evaluated across biogeographic regions and estuary types. Activities contributing to these pressures are identified to prioritise management interventions and assessments of the trajectories of change and data availability are estimated, with associated confidence ratings on these. Approximately 15% of national estuarine area is under severe flow modification pressure. Land-use and development result in severe pressures on 40% of the area. Approximately 15% of inlets are artificially manipulated, which affects 60% of estuarine area. Pollution places 34% of the area under severe pressure and 78% of the area is severely impacted by overfishing. Invasive terrestrial vegetation has infested a third of South African estuaries, and aquatic invasive plant species occur in at least 8% of estuaries. Alien or extralimital (translocated) fish cause severe pressure in 35% of the estuaries. Management responses to mitigate these impacts are recommended for systems under severe pressure and future research directions are identified. |
en_US |
dc.format |
Abstract |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.tandfonline.com/doi/abs/10.2989/16085914.2022.2041388 |
en_US |
dc.source |
African Journal of Aquatic Science |
en_US |
dc.subject |
Artificial breaching pollution |
en_US |
dc.subject |
Artificial breaching |
en_US |
dc.subject |
Exploitationbiological invasions |
en_US |
dc.subject |
Inlet manipulation |
en_US |
dc.subject |
Land-use and development |
en_US |
dc.title |
Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
22pp |
en_US |
dc.description.note |
Copyright: NISC (Pty) Ltd. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website: https://doi.org/10.2989/16085914.2022.2041388 |
en_US |
dc.description.cluster |
Smart Places |
en_US |
dc.description.impactarea |
Coastal Systems |
en_US |
dc.identifier.apacitation |
Van Niekerk, L., Taljaard, S., Lamberth, S., Adams, J., Weerts, S. P., & MacKay, C. (2022). Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience. <i>African Journal of Aquatic Science</i>, http://hdl.handle.net/10204/12447 |
en_ZA |
dc.identifier.chicagocitation |
Van Niekerk, Lara, Susan Taljaard, SJ Lamberth, JB Adams, Steven P Weerts, and CF MacKay "Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience." <i>African Journal of Aquatic Science</i> (2022) http://hdl.handle.net/10204/12447 |
en_ZA |
dc.identifier.vancouvercitation |
Van Niekerk L, Taljaard S, Lamberth S, Adams J, Weerts SP, MacKay C. Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience. African Journal of Aquatic Science. 2022; http://hdl.handle.net/10204/12447. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Van Niekerk, Lara
AU - Taljaard, Susan
AU - Lamberth, SJ
AU - Adams, JB
AU - Weerts, Steven P
AU - MacKay, CF
AB - Globally, the ability of estuaries to sustain functionality and productivity is deteriorating rapidly under ever-increasing anthropogenic pressures. We present a systematic approach to identify, characterise and rank global pressures affecting estuaries. Six main pressure categories are reviewed: freshwater flow modification; pollution; exploitation of fish and invertebrates; land-use and development; manipulation of inlets; and biological invasions (plants and fish). Patterns in pressure effects are evaluated across biogeographic regions and estuary types. Activities contributing to these pressures are identified to prioritise management interventions and assessments of the trajectories of change and data availability are estimated, with associated confidence ratings on these. Approximately 15% of national estuarine area is under severe flow modification pressure. Land-use and development result in severe pressures on 40% of the area. Approximately 15% of inlets are artificially manipulated, which affects 60% of estuarine area. Pollution places 34% of the area under severe pressure and 78% of the area is severely impacted by overfishing. Invasive terrestrial vegetation has infested a third of South African estuaries, and aquatic invasive plant species occur in at least 8% of estuaries. Alien or extralimital (translocated) fish cause severe pressure in 35% of the estuaries. Management responses to mitigate these impacts are recommended for systems under severe pressure and future research directions are identified.
DA - 2022-05
DB - ResearchSpace
DP - CSIR
J1 - African Journal of Aquatic Science
KW - Artificial breaching pollution
KW - Artificial breaching
KW - Exploitationbiological invasions
KW - Inlet manipulation
KW - Land-use and development
LK - https://researchspace.csir.co.za
PY - 2022
SM - 1727-9364
SM - 1608-5914
T1 - Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience
TI - Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience
UR - http://hdl.handle.net/10204/12447
ER -
|
en_ZA |
dc.identifier.worklist |
25806 |
en_US |