A model study of terraced riverbeds as novel ecosystems

Yizhaq, Hezi; Shachak, Moshe; Meron, Ehud

doi:10.1038/s41598-020-60706-y

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…Thus, we distinguish between different functional groups through the different tradeoffs they make between shoot growth and tolerance to water stress. The plant community is quantified by introducing a dimensionless trait parameter (Nathan et al, 2016;Tzuk et al, 2019;Yizhaq et al, 2020), ∈ (0, 1], that represents a tradeoff between plant investment in shoot growth vs. investment in tolerance to water stress, so that → 0 represents plants that invest mostly in growth, while → 1 represents plants that invest mostly in tolerating water stress (see the Methods section for a mathematical formulation). Using this parameter, the pool of species is divided into ≫ 1 functional groups, where all species within the th group have values in the small interval Δ = 1∕ that precedes = Δ .…”

Section: Stress-tolerant Communitymentioning

confidence: 99%

Linking spatial self-organization to community assembly and biodiversity

Bera

Tzuk

Bennett

et al. 2021

eLife

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Temporal shifts to drier climates impose environmental stresses on plant communities that may result in community reassembly and threatened ecosystem services, but also may trigger self-organization in spatial patterns of biota and resources, which act to relax these stresses. The complex relationships between these counteracting processes - community reassembly and spatial self-organization - have hardly been studied. Using a spatio-temporal model of dryland plant communities and a trait-based approach, we study the response of such communities to increasing water-deficit stress. We first show that spatial patterning acts to reverse shifts from fast-growing species to stress-tolerant species, as well as to reverse functional-diversity loss. We then show that spatial self-organization buffers the impact of further stress on community structure. Finally, we identify multistability ranges of uniform and patterned community states and use them to propose forms of non-uniform ecosystem management that integrate the need for provisioning ecosystem services with the need to preserve community structure.

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Section: Stress-tolerant Communitymentioning

confidence: 99%

Linking spatial self-organization to community assembly and biodiversity

Bera

Tzuk

Bennett

et al. 2021

eLife

Self Cite

View full text Add to dashboard Cite

show abstract

“…We quantify the plant community by introducing a dimensionless trait parameter (Nathan et al, 2016;Tzuk et al, 2019;Yizhaq et al, 2020), ∈ (0, 1], that represents a tradeoff between plant investment in shoot growth vs. investment in tolerance to water stress, so that → 0 represents plants that invest mostly in growth, while → 1 represents plants that invest mostly in tolerating water stress. Using this parameter, the pool of species is divided into ≫ 1 functional groups, where all species within the th group have values in the small interval Δ = 1∕ that precedes = Δ .…”

Section: A Model For Spatial Assembly Of Dryland Plant Communitiesmentioning

confidence: 99%

Linking spatial self-organization to community assembly and biodiversity

Meron

Bera

Tzuk

et al. 2021

Preprint

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Drier climates impose environmental stresses on plant communities that may result in community reassembly and threatened ecosystem services, but also may trigger self-organization in spatial patterns of biota and resources, which act to relax these stresses. The complex relationships between these counteracting processes -- community reassembly and spatial self-organization -- have hardly been studied. Using a spatio-temporal model of dryland plant communities and a trait-based approach, we study the response of such communities to imposed water stress of increasing degrees. We first show that spatial patterning acts to reverse shifts from fast-growing species to stress-tolerant species, as well as to reverse functional-diversity loss. We then show that spatial re-patterning buffers the impact of further stress on community structure. Finally, we identify multistability ranges of uniform and patterned community states and use them to propose forms of non-uniform ecosystem management that integrate the need for provisioning ecosystem services with the need to preserve community structure.

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