A conceptual model of cumulative environmental effects of agricultural land drainage
Identifieur interne : 000799 ( Istex/Corpus ); précédent : 000798; suivant : 000800A conceptual model of cumulative environmental effects of agricultural land drainage
Auteurs : Harry Spaling ; Barry SmitSource :
- Agriculture, Ecosystems and Environment [ 0167-8809 ] ; 1995.
Abstract
Cumulative environmental effects are characterized by the temporal and spatial accumulation of change in environmental systems in an additive or interactive manner. Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). The model hypothesizes that, as drainage density increases, changes in environmental components or processes manifest themselves as cumulative effects, and that these effects accumulate at broader temporal and spatial scales.
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DOI: 10.1016/0167-8809(94)00566-W
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>A conceptual model of cumulative environmental effects of agricultural land drainage</title><author><name sortKey="Spaling, Harry" sort="Spaling, Harry" uniqKey="Spaling H" first="Harry" last="Spaling">Harry Spaling</name><affiliation><mods:affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</mods:affiliation></affiliation></author><author><name sortKey="Smit, Barry" sort="Smit, Barry" uniqKey="Smit B" first="Barry" last="Smit">Barry Smit</name><affiliation><mods:affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:B4AE58376EA5929005727F81141C3179500283F5</idno><date when="1995" year="1995">1995</date><idno type="doi">10.1016/0167-8809(94)00566-W</idno><idno type="url">https://api.istex.fr/document/B4AE58376EA5929005727F81141C3179500283F5/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000799</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000799</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">A conceptual model of cumulative environmental effects of agricultural land drainage</title><author><name sortKey="Spaling, Harry" sort="Spaling, Harry" uniqKey="Spaling H" first="Harry" last="Spaling">Harry Spaling</name><affiliation><mods:affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</mods:affiliation></affiliation></author><author><name sortKey="Smit, Barry" sort="Smit, Barry" uniqKey="Smit B" first="Barry" last="Smit">Barry Smit</name><affiliation><mods:affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Agriculture, Ecosystems and Environment</title><title level="j" type="abbrev">AGEE</title><idno type="ISSN">0167-8809</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1995">1995</date><biblScope unit="volume">53</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="99">99</biblScope><biblScope unit="page" to="108">108</biblScope></imprint><idno type="ISSN">0167-8809</idno></series><idno type="istex">B4AE58376EA5929005727F81141C3179500283F5</idno><idno type="DOI">10.1016/0167-8809(94)00566-W</idno><idno type="PII">0167-8809(94)00566-W</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0167-8809</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cumulative environmental effects are characterized by the temporal and spatial accumulation of change in environmental systems in an additive or interactive manner. Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). The model hypothesizes that, as drainage density increases, changes in environmental components or processes manifest themselves as cumulative effects, and that these effects accumulate at broader temporal and spatial scales.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Harry Spaling</name><affiliations><json:string>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</json:string></affiliations></json:item><json:item><name>Barry Smit</name><affiliations><json:string>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Cumulative effects</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Environmental impact</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Drainage</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Agriculture</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Ontario</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>Cumulative environmental effects are characterized by the temporal and spatial accumulation of change in environmental systems in an additive or interactive manner. Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). 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Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). The model hypothesizes that, as drainage density increases, changes in environmental components or processes manifest themselves as cumulative effects, and that these effects accumulate at broader temporal and spatial scales.</p></abstract><textClass><keywords scheme="keyword"><list><head>Keywords</head><item><term>Cumulative effects</term></item><item><term>Environmental impact</term></item><item><term>Drainage</term></item><item><term>Agriculture</term></item><item><term>Ontario</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1995">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/B4AE58376EA5929005727F81141C3179500283F5/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>AGEE</jid><aid>9400566W</aid><ce:pii>0167-8809(94)00566-W</ce:pii><ce:doi>10.1016/0167-8809(94)00566-W</ce:doi><ce:copyright type="unknown" year="1995"></ce:copyright></item-info><head><ce:title>A conceptual model of cumulative environmental effects of agricultural land drainage</ce:title><ce:author-group><ce:author><ce:given-name>Harry</ce:given-name><ce:surname>Spaling</ce:surname><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Barry</ce:given-name><ce:surname>Smit</ce:surname></ce:author><ce:affiliation><ce:textfn>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Corresponding author.</ce:text></ce:correspondence></ce:author-group><ce:date-accepted day="12" month="10" year="1994"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Cumulative environmental effects are characterized by the temporal and spatial accumulation of change in environmental systems in an additive or interactive manner. Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). The model hypothesizes that, as drainage density increases, changes in environmental components or processes manifest themselves as cumulative effects, and that these effects accumulate at broader temporal and spatial scales.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>Cumulative effects</ce:text></ce:keyword><ce:keyword><ce:text>Environmental impact</ce:text></ce:keyword><ce:keyword><ce:text>Drainage</ce:text></ce:keyword><ce:keyword><ce:text>Agriculture</ce:text></ce:keyword><ce:keyword><ce:text>Ontario</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>A conceptual model of cumulative environmental effects of agricultural land drainage</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>A conceptual model of cumulative environmental effects of agricultural land drainage</title></titleInfo><name type="personal"><namePart type="given">Harry</namePart><namePart type="family">Spaling</namePart><affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</affiliation><description>Corresponding author.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Barry</namePart><namePart type="family">Smit</namePart><affiliation>Department of Geography, University of Guelph, Guelph, Ont., Canada N1G 2W1</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1995</dateIssued><copyrightDate encoding="w3cdtf">1995</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Cumulative environmental effects are characterized by the temporal and spatial accumulation of change in environmental systems in an additive or interactive manner. Theoretical frameworks of cumulative environmental change generally follow a causal model consisting of the source of cumulative change, pathways of accumulation, and a typology of cumulative effects. These components, and the notion of temporal and spatial accumulation, are used to develop a conceptual model of the cumulative effects of agricultural land drainage in southern Ontario, Canada. Drainage is a source of cumulative effects because of its temporally repetitive and spatially expansive nature. Drainage modifies flow regimes and contributes a mechanism for the spatial movement of water and contaminants from one location to another. Potential cumulative effects of drainage include the repeated addition of drain water to receiving streams (time crowding), the systematic gathering of contaminants at higher concentrations relative to the source (spatial crowding) and their transport from agroecosystems to aquatic ecosystems downstream (cross-boundary movement), and the severing of natural areas resulting in altered landscape structure and functioning (spatial fragmentation). The model hypothesizes that, as drainage density increases, changes in environmental components or processes manifest themselves as cumulative effects, and that these effects accumulate at broader temporal and spatial scales.</abstract><subject><genre>Keywords</genre><topic>Cumulative effects</topic><topic>Environmental impact</topic><topic>Drainage</topic><topic>Agriculture</topic><topic>Ontario</topic></subject><relatedItem type="host"><titleInfo><title>Agriculture, Ecosystems and Environment</title></titleInfo><titleInfo type="abbreviated"><title>AGEE</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">199504</dateIssued></originInfo><identifier type="ISSN">0167-8809</identifier><identifier type="PII">S0167-8809(00)X0013-8</identifier><part><date>199504</date><detail type="volume"><number>53</number><caption>vol.</caption></detail><detail type="issue"><number>2</number><caption>no.</caption></detail><extent unit="issue pages"><start>99</start><end>199</end></extent><extent unit="pages"><start>99</start><end>108</end></extent></part></relatedItem><identifier type="istex">B4AE58376EA5929005727F81141C3179500283F5</identifier><identifier type="DOI">10.1016/0167-8809(94)00566-W</identifier><identifier type="PII">0167-8809(94)00566-W</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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