气候变化领域集成服务门户(CCPortal): Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.864044
	Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions
	Uthicke; Sven; Ebert; Thomas; Liddy; Michelle; Johansson; Charlotte; Fabricius; Katharina Elisabeth; Lamare; Miles
发布日期	2016-08-24
数据集类型	dataset
英文关键词	Animalia ; Benthic animals ; Benthos ; CO2 vent ; Coast and continental shelf ; Echinodermata ; Echinometra sp. ; Field observation ; Growth/Morphology ; Single species ; South Pacific ; Tropical
英文简介	Rising atmospheric CO2 concentrations will significantly reduce ocean pH during the 21st century (ocean acidification, OA). This may hamper calcification in marine organisms such as corals and echinoderms, as shown in many laboratory-based experiments. Sea urchins are considered highly vulnerable to OA. We studied an Echinometra species on natural volcanic CO2 vents in Papua New Guinea, where they are CO2-acclimatized and also subjected to secondary ecological changes from elevated CO2. Near the vent site, the urchins experienced large daily variations in pH (> 1 unit) and pCO2 (> 2000 ppm) and average pH values (pHT 7.73) much below those expected under the most pessimistic future emission scenarios. Growth was measured over a 17-month period using tetracycline tagging of the calcareous feeding lanterns. Average-sized urchins grew more than twice as fast at the vent compared with those at an adjacent control site, and assumed larger sizes at the vent compared to the control site and two other sites at another reef near-by. A small reduction in gonad weight was detected at the vents, but no differences in mortality, respiration, or degree of test calcification were detected between urchins from vent and control populations. Thus, urchins did not only persist but actually 'thrived' under extreme CO2 conditions. We suggest an ecological basis for this response: increased algal productivity under increased pCO2 provided more food at the vent, resulting in higher growth rates. The wider implication of our observation is that laboratory studies on non-acclimatized specimens, which typically do not consider ecological changes, can lead to erroneous conclusions on responses to global change.
空间范围	Median Latitude: -9.792078 * Median Longitude: 150.840690 * South-bound Latitude: -9.828070 * West-bound Longitude: 150.818100 * North-bound Latitude: -9.752670 * East-bound Longitude: 150.871290
时间范围	2010-01-01T00:00:00 - 2014-12-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/216775
推荐引用方式 GB/T 7714	Uthicke,Sven,Ebert,et al. Echinometra sea urchins acclimatised to elevated pCO2 at volcanic vents outperform those under present-day pCO2 conditions.2016-08-24.https://doi.org/10.1594/PANGAEA.864044.