Quantifying source and sink habitats and pathways in spatially structured populations: A generalized modelling approach

Sample, Christine; Bieri, Joanna A.; Allen, Benjamin L.; Dementieva, Yulia; Carson, Alyssa; Higgins, Connor; Piatt, Sadie; Qiu, Shirley; Stafford, Summer; Mattsson, Brady J.; Semmens, Darius J.; Thogmartin, Wayne E.; Diffendorfer, Jay E.

doi:10.1016/j.ecolmodel.2019.06.003

Cited by 4 publications

(3 citation statements)

References 39 publications

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“…This single wintering node, where no reproduction occurs, would be considered a sink habitat in classic source-sink theory. It would also be deemed not as important when using the Sample et al (2019) per capita contribution metric C r , which accounts for annual demographics and, like G r , can compare breeding areas with nonbreeding areas. In contrast, G r clearly indicates that overwintering sites in the high-elevation forests of central Mexico are vital to the short-term persistence of the population even if the reproductive value of the node is less than that of the other nodes.…”

Section: Discussionmentioning

confidence: 99%

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Quantifying the Contribution of Habitats and Pathways to a Spatially Structured Population Facing Environmental Change

Sample

Bieri

Allen

et al. 2020

The American Naturalist

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Online enhancements: supplemental PDF.abstract: The consequences of environmental disturbance and management are difficult to quantify for spatially structured populations because changes in one location carry through to other areas as a result of species movement. We develop a metric, G, for measuring the contribution of a habitat or pathway to network-wide population growth rate in the face of environmental change. This metric is different from other contribution metrics, as it quantifies effects of modifying vital rates for habitats and pathways in perturbation experiments. Perturbation treatments may range from small degradation or enhancement to complete habitat or pathway removal. We demonstrate the metric using a simple metapopulation example and a case study of eastern monarch butterflies. For the monarch case study, the magnitude of environmental change influences the ordering of node contribution. We find that habitats within which all individuals reside during one season are the most important to short-term network growth under complete removal scenarios, whereas the central breeding region contributes most to population growth over all but the strongest disturbances. The metric G provides for more efficient management interventions that proactively mitigate impacts of expected disturbances to spatially structured populations.

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Section: Discussionmentioning

confidence: 99%

“…One year, from t to t 1 s, is represented by s time steps. Details on how to construct A t are found in Sample et al (2019). The change in population projected over an entire annual cycle, beginning at any time t, is given by the seasonal product matrix:Â…”

Section: Generalized Model Development and Parameterizationmentioning

confidence: 99%

Quantifying the Contribution of Habitats and Pathways to a Spatially Structured Population Facing Environmental Change

Sample

Bieri

Allen

et al. 2020

The American Naturalist

Self Cite

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“…The "Source-Sink" theory is an important theoretical method to identify the law of the spatial development process of matters, and now it has been widely used in multidisciplinary study. In terms of biological sciences, Matthieu Paquet analyzed the habitat source-sink dynamic characteristics of the farmland passerine population [48]; Kokko analyzed the impact of source-sink dynamics on the habitat use strategy of regional organisms [49]; Sample Christine proposed a generalized modeling method to quantify the spatial structure of the population source sink habitat system [50]. In terms of landscape ecology science, Nicola Zaccarelli analyzed the Source/Sink Patterns of Disturbance and Cross-Scale Mismatches in a Panarchy of Social-Ecological Landscapes [51]; Ruiming Ma and Pramanik evaluated the urban heat island landscape patterns of Shenzhen, China and Delhi, India based on the "Source-Sink" theory respectively [52,53].…”

Section: "Source-sink" Theorymentioning

confidence: 99%

Study on the Spatial Pattern of Migration Population in Egypt and Its Flow Field Characteristics from the Perspective of “Source-Flow-Sink”

Zhang

Zhao

2021

Sustainability

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Based on the provinces as the spatial nodes of population migration, a “Source-Flow-Sink” analysis framework of population migration flow in Egypt was established by “Source-Sink” Theory and Flow Field Theory to study the migration population in Egypt. It reveals the spatial pattern of the migration population in Egypt and its flow field characteristics and provides theoretical basis for the formulation of population development policies and regional spatial governance planning. The results show that: (1) there are significant spatial differences in the size and rate of migration in Egypt. In 2017, the migration population in Egypt exceeded 2.2 million in total, with a migration rate of 2.33%, and the extreme multiple reached 80 and 12. (2) According to the spatial pattern of geographical distribution, the Source System is divided into five types: axis type, layer type, fan type, oblique symmetry type, and scattered jump type. There are only three types in Sink System, namely wide area coverage type, local development type, and scattered jump type. Source Places lie in the middle, Sink Places are symmetrical from east to west, and Exchange Places are concentrated along the Mediterranean coast in the north of Cairo on the whole, with the initial formation of a “core-periphery” spatial pattern. (3) The interprovincial population migration flow in Egypt is dominated by neighborhood penetration and polarization of high-rank nodes (capitals or regional economic centers), giving rise to 7 modes of central system spatial structures and 3 modes of pole-core interaction. The central system of flow fields with clear priorities and the streamline channel network with layered trunks and branches basically take shape, overall characterized by stepped runoff from east to west, and local convection from south to north.

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Quantifying the per-capita contribution of all components of a migratory cycle: A modelling framework

Smith

Guiver

Adams

2022

Ecological Modelling

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Quantifying source and sink habitats and pathways in spatially structured populations: A generalized modelling approach

Cited by 4 publications

References 39 publications

Quantifying the Contribution of Habitats and Pathways to a Spatially Structured Population Facing Environmental Change

Quantifying the Contribution of Habitats and Pathways to a Spatially Structured Population Facing Environmental Change

Study on the Spatial Pattern of Migration Population in Egypt and Its Flow Field Characteristics from the Perspective of “Source-Flow-Sink”

Quantifying the per-capita contribution of all components of a migratory cycle: A modelling framework

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