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1. Soil seed bank dynamics under the influence of grazing as alternative explanation for herbaceous vegetation transitions in semi-arid rangelands

Author:
van Langevelde, Frank; Tessema, Zewdu K.; de Boer, Willem F.; Prins, Herbert H.T.
Source:
Ecological modelling 2016 v.337 pp. 253-261
ISSN:
0304-3800
Subject:
perennials,   etc   ; annuals; buried seeds; germination; grasses; grazing intensity; infiltration rate; longevity; models; rain; rangelands; soil types; vegetation cover;     Show all 13 Subjects
Abstract:
... Ecological studies have frequently stressed that the availability of seeds in the soil is important for the recovery of semi-arid rangelands. However, the crucial role of soil seed banks has not been incorporated into rangeland models to understand vegetation states and transitions in semi-arid rangelands. We developed and evaluated a novel model to show that the availability of seeds in the soil ...
DOI:
10.1016/j.ecolmodel.2016.07.013

2. An improved Biome-BGC model for estimating net primary productivity of alpine meadow on the Qinghai-Tibet Plateau

Author:
Sun, Qingling; Li, Baolin; Zhang, Tao; Yuan, Yecheng; Gao, Xizhang; Ge, Jinsong; Li, Fei; Zhang, Zhijun
Source:
Ecological modelling 2017 v.350 pp. 55-68
ISSN:
0304-3800
Subject:
perennials,   etc   ; alpine meadows; biogeochemical cycles; carbon; carbon nitrogen ratio; ecosystems; grasses; growing season; models; mortality; nitrogen; nutrients; primary productivity; roots; soil; water stress; China;     Show all 17 Subjects
Abstract:
... The process-based Biome-BGC (BioGeochemical Cycles) model is widely used to simulate the storage and flux of water, carbon, and nitrogen within an ecosystem. However, the Biome-BGC model neglects the existence of underground persistent portion of perennial grasses as well as functional differences between the fast-cycling and persistent roots, which are assumed to negatively impact the accurate es ...
DOI:
10.1016/j.ecolmodel.2017.01.025

3. Colonial population dynamics of Spartina alterniflora

Author:
Takahashi, Daisuke; Sim, Seung-Woo; Park, Eun-Jin
Source:
Ecological modelling 2019 v.395 pp. 45-50
ISSN:
0304-3800
Subject:
perennials,   etc   ; Spartina alterniflora; grasses; habitats; models; mortality; occupations; population dynamics; rhizomes; sexual reproduction;     Show all 10 Subjects
Abstract:
... Smooth cordgrass, Spartina alterniflora, is a perennial grass species that forms distinctive colonies on mudflats. Such colonies can increase their size by expanding clonally to surrounding open mudflats and their number by establishing new colonies on far away from the original colonies either by sexual reproduction or rhizome fragmentation. In this work, we aimed to link colony dynamics mechanis ...
DOI:
10.1016/j.ecolmodel.2019.01.013

4. 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