Sun exposed temperature data from Sea Point, 07 August to 07 September 2021

To better understand the physiological effects of marine invertebrates to changing environmental conditions, long-term monitoring which captures the natural variability of environmental parameters is required. In this way, experimental findings can be related back to field conditions, and better predictions can be made as to how marine invertebrates, particularly in the harsh intertidal, will fair with rising temperature. In May 2020, Cape Sea Urchins, Parechinus angulosus, were collected from intertidal rock pools at Sea Point, which is situated along the southwest coast of South Africa. After chronic incubation in low pH conditions at the Department of Forestry, Fisheries and the Environment's (DFFE) Sea Point Research Aquarium, their response to thermal stress was investigated in recent experimental trials. To calculate the thermal window for these marine invertebrates, both habitat temperatures, as well as their threshold temperatures are required. The latter was obtained by examining the Critical Thermal Maximum temperatures (CTmax), i.e. the temperatures at which organisms respond with uncoordinated mobility, whereas habitat temperatures are available through the deployment of temperature loggers in the intertidal pools inhabited by these organisms. Apart from rockpool temperatures recorded in Sea Point, Cape Town, a HOBO TidbiT temperature logger was also installed on a nearby structure: 33.92074 S, 18.38051 E to record temperature in a sun-exposed position. An alternative to placement on fully exposed rocks where it would be subjected to theft.This data will allow for an indication of the most extreme temperatures in the vicinity of the pool. Here we present the cleaned up version of the temperature measurements from the 07 August to 07 September 2021.

为深入探究海洋无脊椎动物对环境变化生理效应的理解，有必要进行长期监测，以捕捉环境参数的自然变异性。通过这种方式，可以将实验结果与实地条件联系起来，并对海洋无脊椎动物，尤其是在恶劣的潮间带，如何应对温度上升作出更精准的预测。2020年5月，从南非西南海岸的Sea Point潮间带岩石池中收集了海胆（Parechinus angulosus）。在林业、渔业和环境部（DFFE）的Sea Point研究水族馆的低pH条件下进行长期孵化后，近期实验中对其对热应激的反应进行了研究。为了计算这些海洋无脊椎动物的热量窗口，不仅需要栖息地温度，还需要其阈值温度。后者通过检查临界热最大温度（CTmax）获得，即生物体在无协调运动时响应的温度，而栖息地温度则可通过在生物体栖息的潮间池中部署温度记录器来获得。除了在开普敦Sea Point记录的岩石池温度外，还在附近的结构上安装了一个HOBO TidbiT温度记录器：33.92074 S，18.38051 E，以记录阳光直射位置的温度。这是在完全暴露的岩石上放置的替代方案，后者容易遭受盗窃。这些数据将有助于指示池附近最极端的温度。在此，我们展示了2021年8月7日至9月7日温度测量的清洗版本。