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  1. Article: “And DPSIR begat DAPSI(W)R(M)!” - A unifying framework for marine environmental management

    Elliott, M / A. Borja / D. Burdon / J.P. Atkins / R. Cormier / R.K. Turner / V.N. de Jonge

    Marine pollution bulletin. 2017 May 15, v. 118, no. 1-2

    2017  

    Abstract: The marine environment is a complex system formed by interactions between ecological structure and functioning, physico-chemical processes and socio-economic systems. An increase in competing marine uses and users requires a holistic approach to marine ... ...

    Abstract The marine environment is a complex system formed by interactions between ecological structure and functioning, physico-chemical processes and socio-economic systems. An increase in competing marine uses and users requires a holistic approach to marine management which considers the environmental, economic and societal impacts of all activities. If managed sustainably, the marine environment will deliver a range of ecosystem services which lead to benefits for society. In order to understand the complexity of the system, the DPSIR (Driver-Pressure-State-Impact-Response) approach has long been a valuable problem-structuring framework used to assess the causes, consequences and responses to change in a holistic way. Despite DPSIR being used for a long time, there is still confusion over the definition of its terms and so to be appropriate for current marine management, we contend that this confusion needs to be addressed. Our viewpoint advocates that DPSIR should be extended to DAPSI(W)R(M) (pronounced dap-see-worm) in which Drivers of basic human needs require Activities which lead to Pressures. The Pressures are the mechanisms of State change on the natural system which then leads to Impacts (on human Welfare). Those then require Responses (as Measures). Furthermore, because of the complexity of any managed sea area in terms of multiple Activities, there is the need for a linked-DAPSI(W)R(M) framework, and then the connectivity between marine ecosystems and ecosystems in the catchment and further at sea, requires an interlinked, nested-DAPSI(W)R(M) framework to reflect the continuum between adjacent ecosystems. Finally, the unifying framework for integrated marine management is completed by encompassing ecosystem structure and functioning, ecosystem services and societal benefits. Hence, DAPSI(W)R(M) links the socio-ecological system of the effects of changes to the natural system on the human uses and benefits of the marine system. However, to deliver these sustainably in the light of human activities requires a Risk Assessment and Risk Management framework; the ISO-compliant Bow-Tie method is used here as an example. Finally, to secure ecosystem health and economic benefits such as Blue Growth, successful, adaptive and sustainable marine management Responses (as Measures) are delivered using the 10-tenets, a set of facets covering all management disciplines and approaches.
    Keywords ecosystem services ; environmental health ; environmental management ; financial economics ; humans ; marine ecosystems ; marine environment ; risk assessment ; risk management process ; social welfare ; society ; socioeconomics ; watersheds
    Language English
    Dates of publication 2017-0515
    Size p. 27-40.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2017.03.049
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Applying network methods to acoustic telemetry data: Modeling the movements of tropical marine fishes

    Finn, J.T / A.J. Danylchuk / C.R. Haak / J.W. Brownscombe / R. Cormier / S.J. Cooke / T. Gagne

    Elsevier B.V. Ecological modelling. 2014 Dec. 10, v. 293

    2014  

    Abstract: Modeling animal movements is fundamental to animal ecology as it provides the foundation for further exploration into mechanisms affecting individual and population-level processes. In the last few decades, biotelemetry has enabled scientists to track ... ...

    Abstract Modeling animal movements is fundamental to animal ecology as it provides the foundation for further exploration into mechanisms affecting individual and population-level processes. In the last few decades, biotelemetry has enabled scientists to track the movements of marine life across a variety of scales. However, the use of such technology is progressing faster than the analytical techniques for modeling movement patterns. In summer 2012, we deployed an acoustic telemetry array around Culebra, Puerto Rico, consisting of 48 remote receivers that can detect coded transmissions sent by tags implanted in fish. We surgically implanted transmitters in bonefish (n=28), great barracuda (n=2) and permit (n=1) as part of a multi-year study. In January 2013, we downloaded over 850,000 detections from 39 receivers for 31 fish (several receivers had zero fish detections, and two receivers were not downloaded), and used that six-month data set to explore how graph theory and network analysis can be used to model the movement ecology of the tagged fish. We analyzed this data as two types of graphs. First, a bipartite graph was constructed by linking each fish with an edge weighted by the number of detections of that fish by that receiver. Bipartite graphs are not explicitly spatial, but rather represent which fish associate with which receivers. Second, spatial movement graphs for individuals were built by linking receivers (nodes) by edges with the number of times each fish moved along that edge as weights. The bipartite graph identified groups of fish visiting the same sites, and groups of sites visited by the same fish. Of the six community detection algorithms used, Multilevel, Fast-Greedy, and Walk-Trap performed best, with similar module partitions and modularity scores. All three of these algorithms produced modules (groups) that appear to reflect working hypotheses related to the coastal bathymetry, habitat types, and associated movement ecology of the tagged species. Spatial movement graphs were very different for each fish examined and reflect behavioral differences. Fish exhibited various movement patterns, some showing the pattern of a central place forager (bonefish), while others cruised along a territory (great barracuda and permit).
    Keywords acoustics ; Albula vulpes ; algorithms ; analytical methods ; animal ecology ; biotelemetry ; data collection ; habitats ; marine fish ; models ; network theory ; Sphyraena barracuda ; summer ; Puerto Rico
    Language English
    Dates of publication 2014-1210
    Size p. 139-149.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 191971-4
    ISSN 0304-3800
    ISSN 0304-3800
    DOI 10.1016/j.ecolmodel.2013.12.014
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Compactibility of cultivated sphagnum peat material and its influence on hydrologic characteristics

    CHOW, T. L / H. W. REES / I. GHANEM / R. CORMIER

    Soil science. 1992 Apr., v. 153, no. 4

    1992  

    Abstract: Deformation-stress-moisture relationships of cultivated sphagnum peat materials were studied in the laboratory using the Ottawa Texture Measuring System, an apparatus developed by Agriculture Canada. Impact of compaction on hydrologic characteristics was ...

    Abstract Deformation-stress-moisture relationships of cultivated sphagnum peat materials were studied in the laboratory using the Ottawa Texture Measuring System, an apparatus developed by Agriculture Canada. Impact of compaction on hydrologic characteristics was also investigated to determine the maximum stress which may be applied in the field during seed-bed preparation without limiting aeration for crop production. The study revealed that the compactibility of peat is relatively unaffected by moisture content at compactive pressure ≤13 kPa. However, under higher compactive pressure, the peat reaction was very similar to that of mineral soils, in which the compactibility increases with increasing moisture content until it reaches a maximum bulk density at saturation. The deformation-stress-moisture content relationships may be expressed by a simple third order polynomial equation. In response to compaction, the saturated hydraulic conductivity of the peat material reduced more than three orders of magnitude as bulk density increased from 0.1 to 0.25 g/cm. A major increase in moisture retentivity was found in the compacted peat. Changes in hydrologic characteristics are primarily attributed to the reduction in large pores. Based on this information, it is concluded that compactive pressure exceeding 50 kPa may cause adverse effects on soil aeration.
    Keywords aeration ; agricultural soils ; bulk density ; compressibility ; deformation ; optimization ; peat ; peat soils ; porosity ; pressure ; saturated conditions ; saturated hydraulic conductivity ; soil air ; soil compaction ; soil mechanics ; soil pore system ; soil water content ; soil water retention ; New Brunswick
    Language English
    Dates of publication 1992-04
    Size p. 300-306.
    Publishing place Williams & Wilkins
    Document type Article
    Note Affiliations: 1Research Station, Agriculture Canada, Fredericton, New Brunswick, Canada E3B 4Z7. 2Centre for Land and Biological Resources Research, Agriculture Canada, Fredericton, New Brunswick, Canada E3B 4Z7. 3New Brunswick Department of Agriculture, Fredericton, New Brunswick, Canada E3B 5H1. 4Agriculture Development Branch, Agriculture Canada, Fredericton, New Brunswick, Canada E3B 1C3.
    ZDB-ID 204569-2
    ISSN 0038-075X
    ISSN 0038-075X
    Database NAL-Catalogue (AGRICOLA)

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