Mabidi Annah, Bird Matthew S, Perissinotto Renzo, Rogers D Christopher
DST/NRF Research Chair: Shallow Water Ecosystems, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031, South Africa; Africa Earth Observatory Network, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031, South Africa.
DST/NRF Research Chair: Shallow Water Ecosystems, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031, South Africa.
Zookeys. 2016 Sep 19(618):15-38. doi: 10.3897/zookeys.618.9212. eCollection 2016.
A survey of the large branchiopod fauna of the Eastern Cape Karoo region of South Africa was undertaken to provide baseline biodiversity information in light of impending shale gas development activities in the region. Twenty-two waterbodies, including nine dams and thirteen natural depression wetlands, were sampled during November 2014 and April 2015. A total of 13 species belonging to four orders were collected, comprising five anostracans, one notostracan, six spinicaudatans and one laevicaudatan. was most common, occurring in 46% of the waterbodies. Species co-occurred in 87% of the waterbodies, with a maximum number of six species recorded from the same waterbody. Our new distribution records for , and represent substantial expansions of the previously known ranges for these species. Tarkastad is now the westernmost record for , while Jansenville now constitutes the southernmost record for . Large branchiopod distribution data from previous Eastern Cape records were combined with our current data, demonstrating that a total of 23 large branchiopod species have been recorded from the region to date. As the Karoo is one of the few major shale basins in the world where the natural baseline is still largely intact, this survey forms a basis for future reference and surface water quality monitoring during the process of shale gas exploration/extraction.
鉴于南非东开普卡鲁地区即将开展页岩气开发活动，对该地区的大型鳃足动物区系进行了调查，以提供生物多样性基线信息。2014年11月至2015年4月期间，对22个水体进行了采样，其中包括9座大坝和13处天然洼地湿地。共采集到隶属于4目的13个物种，包括5种无甲目动物、1种背甲目动物、6种棘尾目动物和1种光尾目动物。 最为常见，出现在46%的水体中。87%的水体中有多种物种共存，同一水体中记录到的物种最多为6种。我们关于 、 和 的新分布记录代表了这些物种先前已知分布范围的大幅扩展。塔尔卡斯塔德现在是 的最西端记录点，而扬森维尔现在是 的最南端记录点。将东开普先前记录中的大型鳃足动物分布数据与我们目前的数据相结合，表明该地区迄今共记录到23种大型鳃足动物。由于卡鲁地区是世界上少数几个自然基线仍基本完好的主要页岩盆地之一，本次调查为未来页岩气勘探/开采过程中的参考和地表水水质监测奠定了基础。
