Developing an environmental research platform in the Karoo at the Square Kilometre Array

被引:3
|
作者
van der Merwe, Helga [1 ,2 ]
Milton, Suzanne J. [1 ,3 ]
Dean, W. Richard J. [1 ,3 ]
O'Connor, Tim G. [1 ,4 ]
Henschel, Joh R. [1 ,5 ]
机构
[1] Kimberley, South African Environm Observat Network SAEON, Kimberley, South Africa
[2] Univ Cape Town, Dept Biol Sci, Plant Conservat Unit, Cape Town, South Africa
[3] Univ Cape Town, Percy FitzPatrick Inst African Ornithol, Dept Biol Sci, Cape Town, South Africa
[4] Univ Witwatersrand, Sch Anim Plant & Environm Sci, Johannesburg, South Africa
[5] Univ Free State, Ctr Environm Management, Bloemfontein, South Africa
基金
新加坡国家研究基金会;
关键词
drylands; ecosystem re-organisation; environmental change; long-term; ecological research; Nama-Karoo; TERM ECOLOGICAL RESEARCH; LONG-TERM; VEGETATION; GRASSLAND; DROUGHT; AFRICA; SITE;
D O I
10.17159/sajs.2021/10511
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
A part of the Square Kilometre Array (SKA) will be constructed in the northern Karoo of South Africa on approximately 135 000 ha of land. This land is formerly privately owned rangelands (farms) that were Astronomy Observatory, as part of the global SKA project, will erect the SKA infrastructure. Additionally, a long-term environmental research programme will be established to investigate various dryland ecosystem components at a landscape scale. Livestock has been removed from the farms, and the area is now land cover changes present an unprecedented opportunity to study ecosystem dynamics. The property will be established as an NRF science park, incorporating an SKA research platform for radio astronomy and an environmental research platform of the South African Environmental Observation Network, with additional environmental research conducted by SANParks and their collaborators. We briefly describe current knowledge of the area's environment, and report on past and contemporary changes in this part of the Karoo. We present a conceptual model for the larger landscape which considers possible future land-use scenarios, the projected trajectories of change under these scenarios, and factors influencing these trajectories. These deliberations represent the foundation for future research in this landscape and the development of an environmental observation research platform in the Karoo at SKA. center dot We summarise an extensive environmental baseline report on the SKA property and surrounding areas. center dot Withdrawal of livestock and other changes - such as clearing of alien invasive plants, reduced predator control and reduction in water-point maintenance - are expected to bring about changes in ecological processes and plant and animal communities. center dot We present a conceptual model of scenarios to test possible future trajectories as a first step towards an earth system science research platform in the NRF science park.
引用
收藏
页数:7
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