气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and calcium carbonate of Padina spp., photosynthesis of Padina pavonica in nature CO2 gradients experiment

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.823111
	Seawater carbonate chemistry and calcium carbonate of Padina spp., photosynthesis of Padina pavonica in nature CO2 gradients experiment
	Johnson; Vivienne R; Russell; Bayden D; Fabricius; Katharina Elisabeth; Brownlee; Colin; Hall-Spencer; Jason M
发布日期	2012-01-22
数据集类型	dataset
英文关键词	Animalia ; Benthic animals ; Benthos ; Biomass/Abundance/Elemental composition ; Calcification/Dissolution ; Chromista ; CO2 vent ; Coast and continental shelf ; Echinodermata ; Field observation ; Growth/Morphology ; Macroalgae ; Mediterranean Sea ; Ochrophyta ; Padina pavonica ; Padina spp. ; Primary production/Photosynthesis ; Single species ; South Pacific ; Temperate ; Tropical
英文简介	Predicting the impacts of ocean acidification on coastal ecosystems requires an understanding of the effects on macroalgae and their grazers, as these underpin the ecology of rocky shores. Whilst calcified coralline algae (Rhodophyta) appear to be especially vulnerable to ocean acidification, there is a lack of information concerning calcified brown algae (Phaeophyta), which are not obligate calcifiers but are still important producers of calcium carbonate and organic matter in shallow coastal waters. Here, we compare ecological shifts in subtidal rocky shore systems along CO2 gradients created by volcanic seeps in the Mediterranean and Papua New Guinea, focussing on abundant macroalgae and grazing sea urchins. In both the temperate and tropical systems the abundances of grazing sea urchins declined dramatically along CO2 gradients. Temperate and tropical species of the calcifying macroalgal genus Padina (Dictyoaceae, Phaeophyta) showed reductions in CaCO3 content with CO2 enrichment. In contrast to other studies of calcified macroalgae, however, we observed an increase in the abundance of Padina spp. in acidified conditions. Reduced sea urchin grazing pressure and significant increases in photosynthetic rates may explain the unexpected success of decalcified Padina spp. at elevated levels of CO2. This is the first study to provide a comparison of ecological changes along CO2 gradients between temperate and tropical rocky shores. The similarities we found in the responses of Padina spp. and sea urchin abundance at several vent systems increases confidence in predictions of the ecological impacts of ocean acidification over a large geographical range.
空间范围	Median Latitude: 14.333335 * Median Longitude: 82.891665 * South-bound Latitude: -9.750000 * West-bound Longitude: 14.950000 * North-bound Latitude: 38.416670 * East-bound Longitude: 150.833330
时间范围	2010-09-01T00:00:00 - 2011-05-31T00:00:00
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/217577
推荐引用方式 GB/T 7714	Johnson,Vivienne R,Russell,et al. Seawater carbonate chemistry and calcium carbonate of Padina spp., photosynthesis of Padina pavonica in nature CO2 gradients experiment.2012-01-22.https://doi.org/10.1594/PANGAEA.823111.