Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.20417/nzjecol.45.2 |
| Do woody plants create 'fertile islands' in dryland New Zealand? | |
| Camara, Amadou S. | |
| 通讯作者 | Camara, AS (corresponding author), Univ Otago, Dept Bot, POB 56, Dunedin 9054, New Zealand. ; Camara, AS (corresponding author), Euclid Univ, EUCLID Pole Univ Euclide, Headquarters Gambia, PMB 819, Brusubi, Gambia. |
| 来源期刊 | NEW ZEALAND JOURNAL OF ECOLOGY
 |
| ISSN | 0110-6465 |
| EISSN | 1177-7788 |
| 出版年 | 2021 |
| 卷号 | 45期号:1 |
| 英文摘要 | Woody plants in arid and semi-arid environments may enhance soil nutrient status, the so-called 'fertile island' effect, but this mechanism has never been tested in the drylands of New Zealand. In this study I investigated effects of Kunzea serotina, Discaria toumatou, Rosa rubiginosa, and Coprosma propinqua on soil properties in the drylands of central Otago, New Zealand. Soils had significantly higher organic matter under C. propinqua and significantly higher nitrate and phosphorus concentrations under K. serotina than soils in the adjacent open grassland. A bioassay using oat (Avena sativa) growth indicated higher fertility in soils from under K. serotina than from under grassland. A review of 28 other studies revealed that fertile island effects of woody plant species on soil nitrogen and phosphorus concentrations decreased significantly with increases in annual precipitation. The occurrence of fertile islands under only two of the four shrub species in the current study in a dry sub-humid environment is consistent with this trend of decreased fertile island effect with increased annual precipitation. The higher concentration of nitrogen in soils under woody plants such as C. propinqua may be explained by the plants depositing organic matter on the surface, but some species such as K. serotina, D. toumatou, R. rubiginosa and C. propinqua, may also preferentially establish in areas of high soil phosphorus availability. I conclude that the occurrence of fertile islands under woody plants may be due to both effects of the woody plant canopy, and the plants preferentially establishing in areas of high soil fertility. |
| 英文关键词 | drylands arid semi-arid organic matter nitrogen phosphorus nitrate |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000620350200002 |
| WOS关键词 | SOIL PROPERTIES ; ARID LANDS ; VEGETATION ; TREES ; ENVIRONMENTS ; FACILITATION ; DYNAMICS ; LITTER ; OTAGO |
| WOS类目 | Ecology |
| WOS研究方向 | Environmental Sciences & Ecology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/351212 |
| 作者单位 | [Camara, Amadou S.] Univ Otago, Dept Bot, POB 56, Dunedin 9054, New Zealand; [Camara, Amadou S.] Euclid Univ, EUCLID Pole Univ Euclide, Headquarters Gambia, PMB 819, Brusubi, Gambia |
| 推荐引用方式 GB/T 7714 | Camara, Amadou S.. Do woody plants create 'fertile islands' in dryland New Zealand?[J],2021,45(1). |
| APA | Camara, Amadou S..(2021).Do woody plants create 'fertile islands' in dryland New Zealand?.NEW ZEALAND JOURNAL OF ECOLOGY,45(1). |
| MLA | Camara, Amadou S.."Do woody plants create 'fertile islands' in dryland New Zealand?".NEW ZEALAND JOURNAL OF ECOLOGY 45.1(2021). |
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