Ecosystems and Immune Systems: Hierarchical Response Provides Resilience against Invasions

Allen, Craig R.

doi:10.5751/es-00230-050115

Cited by 28 publications

(7 citation statements)

References 11 publications

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“…In this work, the access of generalist species (herbaceous canopy) has provided the structural integrity and immunity to the ecosystem studied (De Leo & Levin, 1997;Ludwig et al, 1997;Janssen, 2001;Allen, 2001;Levin, 2001), which allows us to determine models for the management of agricultural landscapes. In the present agroecosystem, intensive anthropic activity has caused important structural alterations, and the effect of these activities has substantially transformed the structural integrity of the riparian communities, as revealed by the high HEA detected in the communities occurring on the richest areas.…”

Section: Discussionmentioning

confidence: 99%

Phytostructural characterization of several vegetation types in northern Portugal. II. The structural expressivity and the resistance of the vegetation

Crespí

Bernardos

Castro

et al. 2005

Plant Biosystems - An International Journal Dealing with all As

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The encouraging results obtained in a previous work induced the authors to pursue here the characterization of the structure of the vegetation in northern Portugal, using the phytostructural methodology proposed earlier by the authors. With this objective, eight different types of vegetal communities, representative of the apparent states of the successional process present in this area, and representing the diversity of plant community types in the same area, were selected. The phytostructural method was elaborated on the basis of three types of structural basic matrices regarding diversity, abundance and cover. The data obtained were collected in a contingency matrix, which was then treated by means of a statistical multivariate analysis. Three structural tendencies emerged from this analysis. With the aim of studying their stability, the results are discussed in terms of resistance and resilience, according to the Highest Expressive Amplitude (HEA) concept, and by considering the intra-and inter-community structural dynamics as structural parameters. The data obtained suggest structural situations with different degrees of non-equilibrium that reflect resistance to environmental factors. The resistance of the vegetation is correlated with the apparent functional connectivity detected for the communities analysed.

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Section: Discussionmentioning

confidence: 99%

Phytostructural characterization of several vegetation types in northern Portugal. II. The structural expressivity and the resistance of the vegetation

Crespí

Bernardos

Castro

et al. 2005

Plant Biosystems - An International Journal Dealing with all As

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show abstract

“…Robustness is defined as the persistence of a specified ecosystem feature in the face of a specified assembly of perturbations [6], or also as the ability of a system to maintain function even with changes in internal structure or external environment [7].…”

Section: Ecosystems and Immune Systemsmentioning

confidence: 99%

Structural Robustness in the Light of Risk and Consequence Analysis

Maes¹,

Fritzsons

Glowienka

2006

Structural Engineering International

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Robustness means many things to many people, even amongst civil engineers. In order to describe its essential aspects more clearly within the context of structural systems and critical infrastructure, the concept of robustness in different but related disciplines has been first examined. Both deterministic and probabilistic or risk-based measures of robustness can be developed and used. In the context of systems subject to exceptional hazards, the uncertainty associated with both systems, hazards and consequences plays a prominent role and therefore measures of robustness must express probabilistically how and to what extent certain system performance objectives are affected by external or systemic perturbations. An example is given for a simple structural system. Structural Engineering International

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“…Management is negatively seen as any action that reduces natural variability. Allen (2001) concludes: "As with the human body, we must be wary of too much remedial intervention in the face of invasions.…”

Section: Resource Use and Ecosystem Managementmentioning

confidence: 99%

Evolutionary Thinking in Environmental Economics

Bergh

Jeroen²

2007

SSRN Journal

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Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Attention will be drawn to the fact that evolutionary economics shows a surprising neglect of environmental and natural resource factors. Terms of use: Documents in

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Ecosystems and Immune Systems: Hierarchical Response Provides Resilience against Invasions

Cited by 28 publications

References 11 publications

Phytostructural characterization of several vegetation types in northern Portugal. II. The structural expressivity and the resistance of the vegetation

Phytostructural characterization of several vegetation types in northern Portugal. II. The structural expressivity and the resistance of the vegetation

Structural Robustness in the Light of Risk and Consequence Analysis

Evolutionary Thinking in Environmental Economics

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