Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.02.010 |
Nurse plant size and biotic stress determine quantity and quality of plant facilitation in oak savannas | |
Pelaez, Marta1,2; Dirzo, Rodolfo1; Fernandes, Geraldo Wilson1,3; Perea, Ramon1,2 | |
2019-04-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 437页码:435-442 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Spain; Brazil |
英文摘要 | The nurse plant phenomenon is an important form of facilitative interaction where a "nurse-plant" provides shelter from abiotic or biotic stress to a "beneficiary" plant. However, plant facilitation strongly depends on nurse-plant traits such as size or age. This effect has been mostly attributed to the amelioration of abiotic conditions under larger nurse-plants. However, the effect of nurse-plant size on the overall facilitative process (quantitative and qualitative components) remains largely unexplored, particularly for increasing levels of biotic stress. Here, we investigated the effect of nurse-plant size on the quantitative (recruitment density) and qualitative (recruit shape and growth) components of plant facilitation along two contrasting herbivore-stressed environments. We measured natural oak recruits located under and outside nurse-plants of different size and age. Results show that both components of plant facilitation increased with nurse-plant size but were more pronounced at high biotic stress. Quantitatively, at high biotic stress, facilitation occurred in nurse plants of approximately half the size of those subject to low biotic stress. Interestingly, the qualitative component revealed different results depending on the ontogenetic stage of recruits, with a significant effect of nurse-plant size on large recruits (saplings) but not on small recruits (seedlings). Additionally, at higher biotic stress, more beneficiaries were found further inside the nurse-plant. Similarly, oak recruits located further inside the nurse plant showed greater plant quality. Although nurse-plant age and size were highly correlated, the spatial distribution and quality gradient of recruits suggests that nurse-plant size rather than age enhances plant facilitation in herbivore-dominated environments. We conclude that nurse-plant size plays a crucial role in plant facilitation but its net facilitative effect is strongly mediated by the level of biotic stress and the ontogeny of beneficiaries. We highlight the importance of considering both components (quantity and quality) of plant facilitation to fully understand how plant-plant interactions change at increasing levels of stress. |
英文关键词 | Mediterranean environments Herbivory Plant ontogeny Nurse-plant age Stress gradient hypothesis Wild ungulates |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461270600040 |
WOS关键词 | POSITIVE INTERACTIONS ; MICROHABITAT AMELIORATION ; SEMIARID ENVIRONMENT ; GRADIENT HYPOTHESIS ; TREE SAPLINGS ; SHRUB ; RECRUITMENT ; COMPETITION ; INVASION ; CONSERVATION |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/22886 |
专题 | 气候变化 |
作者单位 | 1.Stanford Univ, Dept Biol, 371 Serra Mall, Stanford, CA 94305 USA; 2.Univ Politecn Madrid, Dept Sistemas & Recursos Nat, Ciudad Univ, ES-28040 Madrid, Spain; 3.Univ Fed Minas Gerais, Dept Biol Geral, BR-30161 Belo Horizonte, MG, Brazil |
推荐引用方式 GB/T 7714 | Pelaez, Marta,Dirzo, Rodolfo,Fernandes, Geraldo Wilson,et al. Nurse plant size and biotic stress determine quantity and quality of plant facilitation in oak savannas[J]. FOREST ECOLOGY AND MANAGEMENT,2019,437:435-442. |
APA | Pelaez, Marta,Dirzo, Rodolfo,Fernandes, Geraldo Wilson,&Perea, Ramon.(2019).Nurse plant size and biotic stress determine quantity and quality of plant facilitation in oak savannas.FOREST ECOLOGY AND MANAGEMENT,437,435-442. |
MLA | Pelaez, Marta,et al."Nurse plant size and biotic stress determine quantity and quality of plant facilitation in oak savannas".FOREST ECOLOGY AND MANAGEMENT 437(2019):435-442. |
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