气候变化领域集成服务门户(CCPortal): Biomonitoring tool for New Zealand peatlands: Testate amoebae and vascular plants as promising bioindicators

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DOI	10.1016/j.jenvman.2024.120243
	Biomonitoring tool for New Zealand peatlands: Testate amoebae and vascular plants as promising bioindicators
	McKeown, Michelle M.; Burge, Olivia R.; Richardson, Sarah J.; Wood, Jamie R.; Mitchell, Edward A. D.; Wilmshurst, Janet M.
发表日期	2024
ISSN	0301-4797
EISSN	1095-8630
起始页码	354
卷号	354
英文摘要	In the last two centuries, a high proportion of peatlands have been lost or severely degraded across the world. The value of peatlands is now well-recognised for biodiversity conservation, flood management, and carbon mitigation, with peatland restoration now central to many government policies for climate action. A challenge, however, is to determine 'natural' and 'disturbed' conditions of peatlands to establish realistic baselines for assessing degradation and setting restoration targets. This requires a tool or set of tools that can rapidly and reliably capture peatland condition across space and time. Our aim was to develop such a tool based on combined analysis of plant and testate amoebae; a group of shelled protists commonly used as indicators of ecological change in peatlands. The value of testate amoebae is well established in Northern Hemisphere Sphagnumdominated peatlands; however, relatively little work has been undertaken for Southern Hemisphere peat forming systems. Here we provide the first assessment and comparison of the bioindicator value of testate amoebae and vascular plants in the context of Southern Hemisphere peatlands. Our results further demonstrate the unique ecohydrological dynamics at play in New Zealand peat forming systems that set them apart from Northern Hemisphere peatlands. Our results show that plant and testate amoeba communities provided valuable information on peatland condition at different scales, we found that testate amoebae tracked changes in the abiotic variables (depth to water table, pH, and conductivity) more closely than vascular plants. Our results further demonstrate that functional traits of testate amoebae showed promising relationships with disturbance. Amoeba test compression, aperture position and test size were linked to changes in hydrology driven by fluctuations in ground water tables; however, trait responses manifested differently in ombrotrophic and minerotrophic peatlands. Overall, testate amoebae provide a promising bioindicator for tracking degradation in New Zealand peatlands and a potential additional tool to assess peatland condition.
英文关键词	Peatlands; Bioindicators; Testate amoebae; Vascular plants; Monitoring tool
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001199637700001
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304189
作者单位	University College Cork; University College Cork; Landcare Research - New Zealand; University of Adelaide; University of Neuchatel
推荐引用方式 GB/T 7714	McKeown, Michelle M.,Burge, Olivia R.,Richardson, Sarah J.,et al. Biomonitoring tool for New Zealand peatlands: Testate amoebae and vascular plants as promising bioindicators[J],2024,354.
APA	McKeown, Michelle M.,Burge, Olivia R.,Richardson, Sarah J.,Wood, Jamie R.,Mitchell, Edward A. D.,&Wilmshurst, Janet M..(2024).Biomonitoring tool for New Zealand peatlands: Testate amoebae and vascular plants as promising bioindicators.JOURNAL OF ENVIRONMENTAL MANAGEMENT,354.
MLA	McKeown, Michelle M.,et al."Biomonitoring tool for New Zealand peatlands: Testate amoebae and vascular plants as promising bioindicators".JOURNAL OF ENVIRONMENTAL MANAGEMENT 354(2024).