Arid
DOI10.1016/j.actao.2013.06.002
Changes in plant cover and functional traits induced by grazing in the arid Patagonian Monte
Baer Lamas, M. I.1; Larreguy, C.1; Carrera, A. L.1,2; Bertiller, M. B.1,2
通讯作者Baer Lamas, M. I.
来源期刊ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
ISSN1146-609X
出版年2013
卷号51页码:66-73
英文摘要

Grazing disturbance may affect the structure and functioning of arid rangelands. We analyzed the changes in plant cover and plant functional traits (plant height, SLA, N in green leaves) at the community, morphotype and species level in relation to grazing disturbance in arid ecosystems with more than 100 years of sheep grazing history. We identified two grazing areas and within each area we selected two representative and homogeneous sites located far (low grazing disturbance) and near (high grazing disturbance) from the single permanent watering point. We evaluated the plant cover at community, morphotype (evergreen tall shrubs, deciduous shrubs, dwarf shrubs, perennial herbs and perennial grasses) and species level at each site and randomly selected three individuals of modal size of each species to evaluate at them the selected plants traits. Plant cover was reduced by grazing disturbance at the community level. The Cover of perennial grasses and evergreen tall shrubs decreased and that of dwarf shrubs increased with increasing grazing disturbance. Increasing cover of dwarf shrubs did not compensate the cover reduction of the other morphotypes. In contrast, plant height, SLA and N in green leaves were not affected by high grazing disturbance at community level as a consequence of positive and negative changes in these traits at morphotype and species levels induced by high grazing disturbance. We concluded that cover was the trait most affected by high grazing disturbance and positive and negative changes in other traits at plant morphotype or species level did not affect community attributes related to resistance against herbivory. (C) 2013 Elsevier Masson SAS. All rights reserved.


英文关键词Grazing disturbance Nitrogen Plant cover Plant height Plant morphotypes Specific leaf area
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000323093200010
WOS关键词ECOLOGY STRATEGY SCHEME ; PERENNIAL GRASSES ; LEAF TRAITS ; NORTHERN PATAGONIA ; LAND-USE ; ARGENTINA ; VEGETATION ; GRADIENT ; STEPPE ; GRASSLANDS
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/2XILL650/175446
作者单位1.Ctr Nacl Patagon, CENPAT, Unidad Invest Ecol Terr, CONICET, RA-9120 Puerto Madryn, Chubut, Argentina;
2.Univ Nacl Patagonia San Juan Bosco, RA-9120 Puerto Madryn, Chubut, Argentina
推荐引用方式
GB/T 7714
Baer Lamas, M. I.,Larreguy, C.,Carrera, A. L.,et al. Changes in plant cover and functional traits induced by grazing in the arid Patagonian Monte[J],2013,51:66-73.
APA Baer Lamas, M. I.,Larreguy, C.,Carrera, A. L.,&Bertiller, M. B..(2013).Changes in plant cover and functional traits induced by grazing in the arid Patagonian Monte.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,51,66-73.
MLA Baer Lamas, M. I.,et al."Changes in plant cover and functional traits induced by grazing in the arid Patagonian Monte".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 51(2013):66-73.
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