The Distribution of the Upland Plant Societies of Kent County, Michigan

Livingston, Burton E.

doi:10.1086/328315

Cited by 51 publications

(25 citation statements)

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“…Sarpa salpa, Symphodus rostratus, Diplodus annularis) can hardly be linked, from an ecological viewpoint, to cave habitats. These sporadic visitors that are often recorded at the cave entrances, which are a sort of "ecotone" (Livingston, 1903;Clements, 1905) between external rocky reefs and the caves, should not be considered as "cave" species. Hypothetically, they could contribute to trophic connectivity between the cave and surrounding open habitats (bringing organic material through feces and removing from the cave some organic material via their feeding).…”

Section: Discussionmentioning

confidence: 99%

Distribution patterns of marine cave fishes and the potential role of the cardinal fishApogon imberbis(Linnaeus, 1758) for cave ecosystem functioning in the western Mediterranean

Bussotti

Franco

Pey

et al. 2017

Aquat. Living Resour.

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Section: Discussionmentioning

confidence: 99%

Distribution patterns of marine cave fishes and the potential role of the cardinal fishApogon imberbis(Linnaeus, 1758) for cave ecosystem functioning in the western Mediterranean

Bussotti

Franco

Pey

et al. 2017

Aquat. Living Resour.

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“…Such a transition belt is analogous to the concept of ecotone, which is "a stress line connecting points of accumulated or abrupt change" (Livingston, 1903;Clements, 1905, p. 277). In other words, an ecotone indicates a narrow transition zone between two adjacent ecosystems with mixed characteristics of the two adjacent ecosystems (Livingston, 1903;Di Castri et al, 1988;Dutoit et al, 2007;Basset et al, 2012; on June 1, 2015 geosphere.gsapubs.org Downloaded from Erdös et al, 2011). Similarly, a peak in ichnodiversity is reached within the aforementioned belt (Fig.…”

Section: Node-level Scalementioning

confidence: 99%

Behaviors mapped by new geographies: Ichnonetwork analysis of the Val Dolce Formation (lower Permian; Italy-Austria)

et al. 2015

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The Pramollo Basin (Italy-Austria) is one of the richest body and trace fossil sites of the Alps, and exhibits a well-preserved Permian-Carboniferous fluvio-deltaic to marginalmarine sedimentary succession. Despite the exceptionally abundant and well-preserved ichnological heritage, the trace fossils of the Pramollo Basin are not well studied, particularly those of Permian units.This study focuses on the ichnofauna of the Val Dolce Formation (Permian; partly Asselian to partly Sakmarian), with the goal of documenting its ichnological heritage and reconstructing its paleoenvironment. These research questions are addressed by applying network theory, an emerging field of complexity science that focuses on web-like systems made of interconnected entities. An ichnological system can be seen as a set of interlinked ichnotaxa, the topology of which depends on the organism-environment interactions. In addition, traditional paleontological and sedimentological observations are used to reconstruct the paleoenvironment.The following ichnotaxa are documented from the Val Dolce Formation: Archaeo nassa isp., Curvolithus simplex, Cylin drichnus isp., Helminthoidichnites tenuis, Nereites missouri ensis, Planolites isp., Phymato derma isp., Pramollichnus pastae, Psammichnites plummeri, Taenidium isp., and Zoophycos isp. Network analysis indicates that the Val Dolce ichnological system is structured, with ichnotaxa organized in environment-driven ichnoassociations: Cylindrichnus-Planolites (proximal delta front), Phymatoderma-Zoophycos (prodelta with dysoxic porewaters), Cylindrichnus-Helminthoidichnites-Curvolithus-Zoophycos (distal delta front-proximal prodelta), andHelminthoidichnites-Taenidium -Curvolithus-Nereites-Zoophycos (prodelta). Furthermore, the delta front-prodelta gradient is accompanied by increasing bioturbation intensity and diversity, reflecting the decreasing intensity of major environmental stressors (hydrodynamics, freshwater input, tur bidity). Centrality measures of network analysis allow the topological position of traces to be discerned within the studied system, detecting the paleoenvironmental resolution of individual ichnotaxa.As intersections of sets can be described by networks, the studied ichnoassociations can be considered as occupying intersecting behavioral niches. In analogy with the concept of a Hutchinsonian niche, an ichnotaxon's niche exists in a multidimensional abstract space defined by environmental parameters, which are expressed as spatial variables in the paleolandscape. Consequently, ichnoassociations are not just association patterns, but represent spatial, environmental, and topological entities. This approach allows the reconstitution of spatial relationships between the geographical ranges of ichnotaxa and ichnoassociations, providing information on the physical arrangement of different subenvironments, that is, the structure of the paleoenvironment.

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“…Ecotones have been studied for more than a century [63][64][65]; however, researchers have devoted more attention to the investigation of distinct, relatively homogeneous ecological units until recently. Various authors suggest that understanding boundaries may have an important role in the early detection of global climate change [66][67][68][69][70] and in conservation works [71][72][73][74].…”

Section: Ecotonesmentioning

confidence: 99%

Ecological Responses to Climate Change at Biogeographical Boundaries

Pálinkás¹

2018

Pure and Applied Biogeography

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Temporal and spatial biogeographical boundaries are usually associated with extinction processes. However, some boundary regions seem to be places of speciation. It is unclear if boundaries are favored by generalized or specialized species. Recent studies suggest that narrow-ranging species can be strong competitors and they can replace wide-ranging species while shifting their range boundaries under the effect of climate change. In other boundary regions, the decline of both passive-and active-dispersing specialists has been observed. Core regions are also weakening. They are jeopardized mainly by extreme climate events and fragmentation and by the accompanied non-native invasions. Biodiversity loss and homogenization have been observed globally.

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The Distribution of the Upland Plant Societies of Kent County, Michigan

Cited by 51 publications

References 0 publications

Distribution patterns of marine cave fishes and the potential role of the cardinal fishApogon imberbis(Linnaeus, 1758) for cave ecosystem functioning in the western Mediterranean

Distribution patterns of marine cave fishes and the potential role of the cardinal fishApogon imberbis(Linnaeus, 1758) for cave ecosystem functioning in the western Mediterranean

Behaviors mapped by new geographies: Ichnonetwork analysis of the Val Dolce Formation (lower Permian; Italy-Austria)

Ecological Responses to Climate Change at Biogeographical Boundaries

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