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

(56 reference statements)

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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

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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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