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A Song of the south: evidence of inter-decadal limit-cycles within a seagrass landscape, driven by a higher octave nutrient consonance. A paleo-reconstruction

Citation

Gallagher, JB, A Song of the south: evidence of inter-decadal limit-cycles within a seagrass landscape, driven by a higher octave nutrient consonance. A paleo-reconstruction, Landscape Ecology and Ecosystem Service conference book, pp. 193-197. ISBN 0954713079 (2011) [Refereed Conference Paper]


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Official URL: https://iale.uk/conference2011

Abstract

Seagrasses provide a high ecosystem service across the globe but appear to be in decline. In response to this concern, and as "time has and will always tell", a late Anthropocene paleo-reconstruction of a seagrass ecosystem was used to develop a theory of seagrass inter-decadal variance. It was found that temporal ecosystem patterns, with prior knowledge constraints, could be explained from hypotheses taken from a constructed ideal temporal model of seagrass landscape configuration and coverage. The expression of 3-D inter-decadal limit cycle was apparent, as a planktivore trophic cascade with an inverse seagrass/micro-algal couple and nutrient availability, at twice the frequency of the biome. The cycle appeared to be born from the intrinsic asymmetry between seagrass landscape edge length and coverage. A mechanism was proposed, based on the temporal narrative, that incorporated seagrass light and nutrient limitation symmetry across ecosystem states, parameter changes in nutrient forcing and biome feedbacks.

Item Details

Item Type:Refereed Conference Paper
Keywords:seagrass, landscape, limit-cycle, planktivore-cascade, nutrients
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Ecosystem Function
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management at Regional or Larger Scales
UTAS Author:Gallagher, JB (Dr John Barry Gallagher)
ID Code:136959
Year Published:2011
Deposited By:Oceans and Cryosphere
Deposited On:2020-01-23
Last Modified:2020-04-06
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