气候变化领域集成服务门户(CCPortal): Bringing the concept of ammonia critical levels into managing cork-oak woodland for conservation

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DOI	10.1016/j.foreco.2019.117566
	Bringing the concept of ammonia critical levels into managing cork-oak woodland for conservation
	Rocha B.; Pinho P.; Branquinho C.; Boieiro M.; Matos P.
发表日期	2019
ISSN	0378-1127
卷号	453
英文摘要	Agricultural activities often emit excessive nitrogen concentrations to nearby habitats, impacting ecosystems structure and functioning. To protect them, critical levels were established as the concentration above which direct adverse effects on ecosystems may arise. However, due to lack of tools, critical levels are seldom applied in management strategies for conservation. Our objective was to provide a spatial-explicit tool to incorporate the concept of ammonia critical levels in management practices of atmospheric nitrogen impacts. To do that, lichens diversity was sampled in 19 plots at a cork oak woodland (Montado), a High Nature Value Farmland where multiple agricultural activities, surrounded by high-intensity agricultural activities, coexist. We inferred and selected the best performing trait-based metrics and determined the main environmental drivers of change. The most responsive metric was the abundance of oligotrophic lichen species, which was likely responding to nitrogen incoming from nearby high-intensity agricultural areas. The low intensity agricultural activities, cattle grazing within the study area, had no effect. Using the known ammonia critical levels for that ecosystem, we modelled and mapped the long-term critical levels exceedance for the entire study area. This allowed us to signal high intensity agriculture as the source of impact and to map the areas where management practices need further attention under a conservation perspective: either decreasing fertilization in nearby fields or by considering these as buffer areas, outside the scope of conservation. © 2019 Elsevier B.V.
英文关键词	Critical levels; Ecological indicators; Environmental management; Lichens; Montado
语种	英语
scopus关键词	Ammonia; Ecosystems; Environmental management; Fungi; Nitrogen; Agricultural activities; Critical level; Ecological indicators; Lichens; Management practices; Management strategies; Montado; Nitrogen concentrations; Agriculture; abundance; cattle; conservation management; conservation status; deciduous tree; environmental indicator; environmental management; lichen; management practice; strategic approach; woodland; Agriculture; Ammonia; Ecosystems; Fungi; Lichens; Nitrogen; Bos; Quercus suber
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155724
作者单位	Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa, 1749-016, Portugal; Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group and Departamento de Ciências e Engenharia do Ambiente, Universidade dos Açores, Azores, Portugal
推荐引用方式 GB/T 7714	Rocha B.,Pinho P.,Branquinho C.,et al. Bringing the concept of ammonia critical levels into managing cork-oak woodland for conservation[J],2019,453.
APA	Rocha B.,Pinho P.,Branquinho C.,Boieiro M.,&Matos P..(2019).Bringing the concept of ammonia critical levels into managing cork-oak woodland for conservation.Forest Ecology and Management,453.
MLA	Rocha B.,et al."Bringing the concept of ammonia critical levels into managing cork-oak woodland for conservation".Forest Ecology and Management 453(2019).