Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.08.033 |
Environment and anthropogenic impacts as main drivers of plant assemblages in forest mountain landscapes of Southern Patagonia | |
Huertas Herrera, Alejandro1; Manuel Cellini, Juan2; Barrera, Marcelo2; Vanessa Lencinas, Maria1; Martinez Pastur, Guillermo1 | |
2018-12-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 430页码:380-393 |
文章类型 | Article |
语种 | 英语 |
国家 | Argentina |
英文摘要 | Management of natural areas generated multiple trade-offs, and changes in the plant assemblages was identified as one of the most critical ones. In this context, understanding the drivers of change of exotic plant diversity is critically important for biodiversity conservation and land planning. The aim of this work was to evaluate the relationships between environmental gradients in mountain landscapes and anthropogenic impacts related to human uses as drivers for plant assemblages (native and exotic species) in Southern Patagonian forests. The study was located in the Andorra Valley basin (12,934 ha) in the southern Tierra del Fuego Island (Argentina), where mountain landscape units (land-cover and land-use) were identified according to their vegetation types (forests and open-lands), elevational effects ( < 400 and > 400 m.a.s.l.) and anthropogenic impacts derived from economic activities (harvesting and cattle grazing). Classification was based on Landsat 8 011 images with fieldwork samplings, relevating a total of 101 landscape units. In each unit, forest structure and floristic surveys (dicots, monocots, pteridophytas and bryophytes) were conducted. Data were evaluated using ANOVAs and multivariate analyses (cluster, detrended and canonical correspondence analysis). A total of 104 plant species were surveyed (88% natives and 12% exotics), where managed deciduous forests (Nothofagus pumilio) had the highest values of exotic species occurrence frequency (20%). Multivariate analyses showed that environmental gradients and anthropogenic impacts highly affected the distribution of exotic species. Native species had higher cover values at upper elevations, while exotic plants had a higher cover at lower elevations, where the N-S aspects were strongly correlated with plant preferences for shaded/lighted aspects. The occurrence of exotic species can be specifically related to human activities (e.g., Agrostis stolonifera and Rumex acetosella with cattle grazing; and Poa nemoralis, Ranunculus repent and Stellaria media with harvesting), however one of them (P. trivialis) was related with unharvested forests. We conclude that environmental gradients and anthropogenic impacts define the plant assemblages at landscape level, and they also influence the occurrence of the exotic species, where the main driver was the harvesting. We propose that land-sharing conservation strategy in these mountain landscapes could be the better approach towards sustainability ensuring the preservation of the land-cover and the land-use at the low and upper elevations. |
英文关键词 | Forest harvesting Cattle grazing Conservation Basin Land-cover Land-use |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449137300037 |
WOS关键词 | TIERRA-DEL-FUEGO ; VARIABLE RETENTION ; FOOD-PRODUCTION ; TIMBER QUALITY ; SURFACE-AREA ; BIODIVERSITY ; CONSERVATION ; GRADIENTS ; PATTERNS ; ELEVATION |
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/24107 |
专题 | 气候变化 |
作者单位 | 1.Consejo Nacl Invest Cient & Tecn, CADIC, Lab Recursos Agroforestales, Houssay 200, RA-9410 Ushuaia, Tierra Del Fueg, Argentina; 2.Univ Nacl La Plata, Fac Ciencias Agr & Forestales, Cc 31, RA-1900 La Plata, Buenos Aires, Argentina |
推荐引用方式 GB/T 7714 | Huertas Herrera, Alejandro,Manuel Cellini, Juan,Barrera, Marcelo,et al. Environment and anthropogenic impacts as main drivers of plant assemblages in forest mountain landscapes of Southern Patagonia[J]. FOREST ECOLOGY AND MANAGEMENT,2018,430:380-393. |
APA | Huertas Herrera, Alejandro,Manuel Cellini, Juan,Barrera, Marcelo,Vanessa Lencinas, Maria,&Martinez Pastur, Guillermo.(2018).Environment and anthropogenic impacts as main drivers of plant assemblages in forest mountain landscapes of Southern Patagonia.FOREST ECOLOGY AND MANAGEMENT,430,380-393. |
MLA | Huertas Herrera, Alejandro,et al."Environment and anthropogenic impacts as main drivers of plant assemblages in forest mountain landscapes of Southern Patagonia".FOREST ECOLOGY AND MANAGEMENT 430(2018):380-393. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论