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1. Coping with drought: root trait variability within the perennial grass Dactylis glomerata captures a trade-off between dehydration avoidance and dehydration tolerance

Author:
Bristiel, Pauline; Roumet, Catherine; Violle, Cyrille; Volaire, Florence
Source:
Plant and soil 2019 v.434 no.1-2 pp. 327-342
ISSN:
0032-079X
Subject:
perennials,   etc   ; Dactylis glomerata; biogeography; climate change; drought; grasses; intraspecific variation; irrigation rates; phytomass; plant adaptation; rooting; water uptake;     Show all 12 Subjects
Abstract:
... BACKGROUND AND AIMS: Understanding plant adaptation to drought is a crucial challenge under climate change. This study aimed to investigate root traits and water use of grass populations exhibiting a range of dehydration avoidance and tolerance strategies to cope with drought. METHODS: Sixteen populations of the perennial grass Dactylis glomerata originating from three biogeographical origins (Nor ...
DOI:
10.1007/s11104-018-3854-8

2. Comparing soil respiration and carbon pools of a maize-wheat rotation and switchgrass for predicting land-use change-driven SOC variations

Author:
Nocentini, Andrea; Monti, Andrea
Source:
Agricultural systems 2019 v.173 pp. 209-217
ISSN:
0308-521X
Subject:
perennials,   etc   ; Panicum virgatum; annuals; biomass; biorefining; carbon; carbon dioxide; carbon sequestration; climate change; corn; corn stover; crop rotation; cropland; energy crops; grasses; grazing lands; inventories; land use change; models; prediction; soil; soil organic matter; soil respiration; tillage; wheat; Europe;     Show all 26 Subjects
Abstract:
... The deployment of dedicated energy crops and the related land-use change are topical issues, particularly in relation to carbon storage and climate change mitigation effects. In order to maximize their mitigation potential and to fully supply new biorefineries, perennial energy crops may be established, not only on former idle and grazing lands, but also on the least remunerative cropland, as indi ...
DOI:
10.1016/j.agsy.2019.03.003

3. Grazing and aridity reduce perennial grass abundance in semi-arid rangelands – Insights from a trait-based dynamic vegetation model

Author:
Pfeiffer, Mirjam; Langan, Liam; Linstädter, Anja; Martens, Carola; Gaillard, Camille; Ruppert, Jan C.; Higgins, Steven I.; Mudongo, Edwin I.; Scheiter, Simon
Source:
Ecological modelling 2019 v.395 pp. 11-22
ISSN:
0304-3800
Subject:
perennials,   etc   ; annuals; atmospheric precipitation; carrying capacity; climate change; community structure; dry environmental conditions; ecosystems; farmers; functional diversity; grasses; grazing effects; livelihood; livestock; models; overgrazing; rangeland degradation; rangelands; vegetation; South Africa;     Show all 20 Subjects
Abstract:
... Semi-arid tropical rangelands substantially contribute to livelihoods of subsistence farmers, but are threatened by undesired vegetation shifts due to climate change and overgrazing. Grazing-induced shifts of the grass community composition are often associated with rangeland degradation. To identify sustainable management strategies, a process-based understanding of grass functional diversity and ...
DOI:
10.1016/j.ecolmodel.2018.12.013