Trends in Nitrogen Transport in Swedish Rivers View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1999-11

AUTHORS

Per Stålnacke, Anders Grimvall, Karin Sundblad, Anders Wilander

ABSTRACT

Concern about nitrogen loads in marine environments has drawn attention to the existence and possible causes of long-term trends in nitrogen transport in rivers. The present study was based on data from the Swedish environmental monitoring programme for surface water quality; the continuity of these data is internationally unique. A recently developed semiparametric method was employed to study the development of relationships between runoff and river transport of nitrogen since 1971; the observed relationships were then used to produce time series of flow-normalised transports for 66 sites in 39 river basins. Subsequent statistical analyses of flow-normalised data revealed only few significant downward trends (p ≤0.05) during the time period 1971–1994, and the most pronounced of these downward trends were caused by reduced point emissions of nitrogen. The number of significant upward trends was substantially larger (15 for total-N and 18 for NO3-N). Closer examination of obtained results revealed the following: (i) the most pronounced upward trends were present downstream of lakes, and (ii) observed increases in nitrogen transport coincided in time and space with reduced point emissions of phosphorus or organic matter. This indicated that changes in the retention of nitrogen in lakes were responsible for the upward nitrogen trends. The hypothesis that nitrogen saturation of forest soils has caused a general increase in the riverine export of nitrogen from forested catchments in Sweden was not confirmed. Neither did the results indicate that improved agricultural practices have reduced the export of nitrogen from agricultural catchments. More... »

PAGES

47-72

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1006007711735

DOI

http://dx.doi.org/10.1023/a:1006007711735

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1022787381


Indexing Status Check whether this publication has been indexed by Scopus and Web Of Science using the SN Indexing Status Tool
Incoming Citations Browse incoming citations for this publication using opencitations.net

JSON-LD is the canonical representation for SciGraph data.

TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT

[
  {
    "@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json", 
    "about": [
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/09", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "name": "Engineering", 
        "type": "DefinedTerm"
      }, 
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/0907", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "name": "Environmental Engineering", 
        "type": "DefinedTerm"
      }
    ], 
    "author": [
      {
        "affiliation": {
          "alternateName": "Jordforsk \u2013 Centre for Soil and Environmental Research, N-1432, \u00c5s, Norway", 
          "id": "http://www.grid.ac/institutes/grid.454322.6", 
          "name": [
            "Jordforsk \u2013 Centre for Soil and Environmental Research, N-1432, \u00c5s, Norway"
          ], 
          "type": "Organization"
        }, 
        "familyName": "St\u00e5lnacke", 
        "givenName": "Per", 
        "id": "sg:person.0677441503.55", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0677441503.55"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "Department of Mathematics, Link\u00f6ping University, SE-581 83, Link\u00f6ping, Sweden", 
          "id": "http://www.grid.ac/institutes/grid.5640.7", 
          "name": [
            "Department of Mathematics, Link\u00f6ping University, SE-581 83, Link\u00f6ping, Sweden"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Grimvall", 
        "givenName": "Anders", 
        "id": "sg:person.016455534701.80", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.016455534701.80"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "Department of Physics and Measurement Technology, Link\u00f6ping University, SE-581 83, Link\u00f6ping, Sweden", 
          "id": "http://www.grid.ac/institutes/grid.5640.7", 
          "name": [
            "Department of Physics and Measurement Technology, Link\u00f6ping University, SE-581 83, Link\u00f6ping, Sweden"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Sundblad", 
        "givenName": "Karin", 
        "id": "sg:person.012775306062.73", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.012775306062.73"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "Department of Environmental Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden", 
          "id": "http://www.grid.ac/institutes/grid.6341.0", 
          "name": [
            "Department of Environmental Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Wilander", 
        "givenName": "Anders", 
        "id": "sg:person.0632403654.07", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0632403654.07"
        ], 
        "type": "Person"
      }
    ], 
    "citation": [
      {
        "id": "sg:pub.10.1007/bf00770243", 
        "sameAs": [
          "https://app.dimensions.ai/details/publication/pub.1012310634", 
          "https://doi.org/10.1007/bf00770243"
        ], 
        "type": "CreativeWork"
      }, 
      {
        "id": "sg:pub.10.1007/bf00554797", 
        "sameAs": [
          "https://app.dimensions.ai/details/publication/pub.1045435638", 
          "https://doi.org/10.1007/bf00554797"
        ], 
        "type": "CreativeWork"
      }, 
      {
        "id": "sg:pub.10.1007/bf00477141", 
        "sameAs": [
          "https://app.dimensions.ai/details/publication/pub.1005174034", 
          "https://doi.org/10.1007/bf00477141"
        ], 
        "type": "CreativeWork"
      }, 
      {
        "id": "sg:pub.10.1007/bf00000850", 
        "sameAs": [
          "https://app.dimensions.ai/details/publication/pub.1047332505", 
          "https://doi.org/10.1007/bf00000850"
        ], 
        "type": "CreativeWork"
      }, 
      {
        "id": "sg:pub.10.1007/bf00479590", 
        "sameAs": [
          "https://app.dimensions.ai/details/publication/pub.1039341996", 
          "https://doi.org/10.1007/bf00479590"
        ], 
        "type": "CreativeWork"
      }
    ], 
    "datePublished": "1999-11", 
    "datePublishedReg": "1999-11-01", 
    "description": "Concern about nitrogen loads in marine environments has drawn attention to the existence and possible causes of long-term trends in nitrogen transport in rivers. The present study was based on data from the Swedish environmental monitoring programme for surface water quality; the continuity of these data is internationally unique. A recently developed semiparametric method was employed to study the development of relationships between runoff and river transport of nitrogen since 1971; the observed relationships were then used to produce time series of flow-normalised transports for 66 sites in 39 river basins. Subsequent statistical analyses of flow-normalised data revealed only few significant downward trends (p \u22640.05) during the time period 1971\u20131994, and the most pronounced of these downward trends were caused by reduced point emissions of nitrogen. The number of significant upward trends was substantially larger (15 for total-N and 18 for NO3-N). Closer examination of obtained results revealed the following: (i) the most pronounced upward trends were present downstream of lakes, and (ii) observed increases in nitrogen transport coincided in time and space with reduced point emissions of phosphorus or organic matter. This indicated that changes in the retention of nitrogen in lakes were responsible for the upward nitrogen trends. The hypothesis that nitrogen saturation of forest soils has caused a general increase in the riverine export of nitrogen from forested catchments in Sweden was not confirmed. Neither did the results indicate that improved agricultural practices have reduced the export of nitrogen from agricultural catchments.", 
    "genre": "article", 
    "id": "sg:pub.10.1023/a:1006007711735", 
    "inLanguage": "en", 
    "isAccessibleForFree": false, 
    "isPartOf": [
      {
        "id": "sg:journal.1095684", 
        "issn": [
          "0167-6369", 
          "1573-2959"
        ], 
        "name": "Environmental Monitoring and Assessment", 
        "publisher": "Springer Nature", 
        "type": "Periodical"
      }, 
      {
        "issueNumber": "1", 
        "type": "PublicationIssue"
      }, 
      {
        "type": "PublicationVolume", 
        "volumeNumber": "59"
      }
    ], 
    "keywords": [
      "nitrogen transport", 
      "Swedish Environmental Monitoring Programme", 
      "surface water quality", 
      "environmental monitoring programs", 
      "point emissions", 
      "export of nitrogen", 
      "forest soil", 
      "nitrogen saturation", 
      "agricultural catchments", 
      "riverine export", 
      "agricultural practices", 
      "water quality", 
      "nitrogen trends", 
      "nitrogen load", 
      "organic matter", 
      "monitoring program", 
      "River Basin", 
      "retention of nitrogen", 
      "Swedish rivers", 
      "long-term trends", 
      "pronounced upward trend", 
      "marine environment", 
      "river transport", 
      "catchment", 
      "nitrogen", 
      "River", 
      "downward trend", 
      "lakes", 
      "significant upward trend", 
      "significant downward trend", 
      "general increase", 
      "observed relationship", 
      "upward trend", 
      "time period 1971", 
      "soil", 
      "runoff", 
      "phosphorus", 
      "export", 
      "time series", 
      "trends", 
      "basin", 
      "subsequent statistical analysis", 
      "emission", 
      "matter", 
      "sites", 
      "transport", 
      "environment", 
      "Sweden", 
      "statistical analysis", 
      "relationship", 
      "retention", 
      "concern", 
      "possible causes", 
      "data", 
      "changes", 
      "increase", 
      "development of relationships", 
      "hypothesis", 
      "quality", 
      "saturation", 
      "practice", 
      "present study", 
      "results", 
      "close examination", 
      "program", 
      "study", 
      "attention", 
      "development", 
      "space", 
      "load", 
      "analysis", 
      "number", 
      "time", 
      "cause", 
      "continuity", 
      "existence", 
      "series", 
      "method", 
      "semiparametric method", 
      "examination"
    ], 
    "name": "Trends in Nitrogen Transport in Swedish Rivers", 
    "pagination": "47-72", 
    "productId": [
      {
        "name": "dimensions_id", 
        "type": "PropertyValue", 
        "value": [
          "pub.1022787381"
        ]
      }, 
      {
        "name": "doi", 
        "type": "PropertyValue", 
        "value": [
          "10.1023/a:1006007711735"
        ]
      }
    ], 
    "sameAs": [
      "https://doi.org/10.1023/a:1006007711735", 
      "https://app.dimensions.ai/details/publication/pub.1022787381"
    ], 
    "sdDataset": "articles", 
    "sdDatePublished": "2022-05-20T07:21", 
    "sdLicense": "https://scigraph.springernature.com/explorer/license/", 
    "sdPublisher": {
      "name": "Springer Nature - SN SciGraph project", 
      "type": "Organization"
    }, 
    "sdSource": "s3://com-springernature-scigraph/baseset/20220519/entities/gbq_results/article/article_326.jsonl", 
    "type": "ScholarlyArticle", 
    "url": "https://doi.org/10.1023/a:1006007711735"
  }
]
 

Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1023/a:1006007711735'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1023/a:1006007711735'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1023/a:1006007711735'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1023/a:1006007711735'


 

This table displays all metadata directly associated to this object as RDF triples.

187 TRIPLES      22 PREDICATES      111 URIs      98 LITERALS      6 BLANK NODES

Subject Predicate Object
1 sg:pub.10.1023/a:1006007711735 schema:about anzsrc-for:09
2 anzsrc-for:0907
3 schema:author Nd340e5f558e4441cada50c650500a454
4 schema:citation sg:pub.10.1007/bf00000850
5 sg:pub.10.1007/bf00477141
6 sg:pub.10.1007/bf00479590
7 sg:pub.10.1007/bf00554797
8 sg:pub.10.1007/bf00770243
9 schema:datePublished 1999-11
10 schema:datePublishedReg 1999-11-01
11 schema:description Concern about nitrogen loads in marine environments has drawn attention to the existence and possible causes of long-term trends in nitrogen transport in rivers. The present study was based on data from the Swedish environmental monitoring programme for surface water quality; the continuity of these data is internationally unique. A recently developed semiparametric method was employed to study the development of relationships between runoff and river transport of nitrogen since 1971; the observed relationships were then used to produce time series of flow-normalised transports for 66 sites in 39 river basins. Subsequent statistical analyses of flow-normalised data revealed only few significant downward trends (p ≤0.05) during the time period 1971–1994, and the most pronounced of these downward trends were caused by reduced point emissions of nitrogen. The number of significant upward trends was substantially larger (15 for total-N and 18 for NO3-N). Closer examination of obtained results revealed the following: (i) the most pronounced upward trends were present downstream of lakes, and (ii) observed increases in nitrogen transport coincided in time and space with reduced point emissions of phosphorus or organic matter. This indicated that changes in the retention of nitrogen in lakes were responsible for the upward nitrogen trends. The hypothesis that nitrogen saturation of forest soils has caused a general increase in the riverine export of nitrogen from forested catchments in Sweden was not confirmed. Neither did the results indicate that improved agricultural practices have reduced the export of nitrogen from agricultural catchments.
12 schema:genre article
13 schema:inLanguage en
14 schema:isAccessibleForFree false
15 schema:isPartOf N4fe7b43fd4464551bde027a21dcff457
16 Ned38ea279e7e4a3b9016fd0549494edc
17 sg:journal.1095684
18 schema:keywords River
19 River Basin
20 Sweden
21 Swedish Environmental Monitoring Programme
22 Swedish rivers
23 agricultural catchments
24 agricultural practices
25 analysis
26 attention
27 basin
28 catchment
29 cause
30 changes
31 close examination
32 concern
33 continuity
34 data
35 development
36 development of relationships
37 downward trend
38 emission
39 environment
40 environmental monitoring programs
41 examination
42 existence
43 export
44 export of nitrogen
45 forest soil
46 general increase
47 hypothesis
48 increase
49 lakes
50 load
51 long-term trends
52 marine environment
53 matter
54 method
55 monitoring program
56 nitrogen
57 nitrogen load
58 nitrogen saturation
59 nitrogen transport
60 nitrogen trends
61 number
62 observed relationship
63 organic matter
64 phosphorus
65 point emissions
66 possible causes
67 practice
68 present study
69 program
70 pronounced upward trend
71 quality
72 relationship
73 results
74 retention
75 retention of nitrogen
76 river transport
77 riverine export
78 runoff
79 saturation
80 semiparametric method
81 series
82 significant downward trend
83 significant upward trend
84 sites
85 soil
86 space
87 statistical analysis
88 study
89 subsequent statistical analysis
90 surface water quality
91 time
92 time period 1971
93 time series
94 transport
95 trends
96 upward trend
97 water quality
98 schema:name Trends in Nitrogen Transport in Swedish Rivers
99 schema:pagination 47-72
100 schema:productId Nd9b75f27742f4fcca44ba856b45eefbb
101 Nded1fc30687d48b6b4b9be3df9082b2a
102 schema:sameAs https://app.dimensions.ai/details/publication/pub.1022787381
103 https://doi.org/10.1023/a:1006007711735
104 schema:sdDatePublished 2022-05-20T07:21
105 schema:sdLicense https://scigraph.springernature.com/explorer/license/
106 schema:sdPublisher N6a9e5a3b204d4abb873a25295ee50d6f
107 schema:url https://doi.org/10.1023/a:1006007711735
108 sgo:license sg:explorer/license/
109 sgo:sdDataset articles
110 rdf:type schema:ScholarlyArticle
111 N24d68747420442d7ba62475da96fb5e8 rdf:first sg:person.016455534701.80
112 rdf:rest Ndca42175acd149fd9b8abde507b03c46
113 N4fe7b43fd4464551bde027a21dcff457 schema:volumeNumber 59
114 rdf:type schema:PublicationVolume
115 N6a9e5a3b204d4abb873a25295ee50d6f schema:name Springer Nature - SN SciGraph project
116 rdf:type schema:Organization
117 N7732ff08a7c54f9788f15fb8ab7953c4 rdf:first sg:person.0632403654.07
118 rdf:rest rdf:nil
119 Nd340e5f558e4441cada50c650500a454 rdf:first sg:person.0677441503.55
120 rdf:rest N24d68747420442d7ba62475da96fb5e8
121 Nd9b75f27742f4fcca44ba856b45eefbb schema:name doi
122 schema:value 10.1023/a:1006007711735
123 rdf:type schema:PropertyValue
124 Ndca42175acd149fd9b8abde507b03c46 rdf:first sg:person.012775306062.73
125 rdf:rest N7732ff08a7c54f9788f15fb8ab7953c4
126 Nded1fc30687d48b6b4b9be3df9082b2a schema:name dimensions_id
127 schema:value pub.1022787381
128 rdf:type schema:PropertyValue
129 Ned38ea279e7e4a3b9016fd0549494edc schema:issueNumber 1
130 rdf:type schema:PublicationIssue
131 anzsrc-for:09 schema:inDefinedTermSet anzsrc-for:
132 schema:name Engineering
133 rdf:type schema:DefinedTerm
134 anzsrc-for:0907 schema:inDefinedTermSet anzsrc-for:
135 schema:name Environmental Engineering
136 rdf:type schema:DefinedTerm
137 sg:journal.1095684 schema:issn 0167-6369
138 1573-2959
139 schema:name Environmental Monitoring and Assessment
140 schema:publisher Springer Nature
141 rdf:type schema:Periodical
142 sg:person.012775306062.73 schema:affiliation grid-institutes:grid.5640.7
143 schema:familyName Sundblad
144 schema:givenName Karin
145 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.012775306062.73
146 rdf:type schema:Person
147 sg:person.016455534701.80 schema:affiliation grid-institutes:grid.5640.7
148 schema:familyName Grimvall
149 schema:givenName Anders
150 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.016455534701.80
151 rdf:type schema:Person
152 sg:person.0632403654.07 schema:affiliation grid-institutes:grid.6341.0
153 schema:familyName Wilander
154 schema:givenName Anders
155 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0632403654.07
156 rdf:type schema:Person
157 sg:person.0677441503.55 schema:affiliation grid-institutes:grid.454322.6
158 schema:familyName Stålnacke
159 schema:givenName Per
160 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.0677441503.55
161 rdf:type schema:Person
162 sg:pub.10.1007/bf00000850 schema:sameAs https://app.dimensions.ai/details/publication/pub.1047332505
163 https://doi.org/10.1007/bf00000850
164 rdf:type schema:CreativeWork
165 sg:pub.10.1007/bf00477141 schema:sameAs https://app.dimensions.ai/details/publication/pub.1005174034
166 https://doi.org/10.1007/bf00477141
167 rdf:type schema:CreativeWork
168 sg:pub.10.1007/bf00479590 schema:sameAs https://app.dimensions.ai/details/publication/pub.1039341996
169 https://doi.org/10.1007/bf00479590
170 rdf:type schema:CreativeWork
171 sg:pub.10.1007/bf00554797 schema:sameAs https://app.dimensions.ai/details/publication/pub.1045435638
172 https://doi.org/10.1007/bf00554797
173 rdf:type schema:CreativeWork
174 sg:pub.10.1007/bf00770243 schema:sameAs https://app.dimensions.ai/details/publication/pub.1012310634
175 https://doi.org/10.1007/bf00770243
176 rdf:type schema:CreativeWork
177 grid-institutes:grid.454322.6 schema:alternateName Jordforsk – Centre for Soil and Environmental Research, N-1432, Ås, Norway
178 schema:name Jordforsk – Centre for Soil and Environmental Research, N-1432, Ås, Norway
179 rdf:type schema:Organization
180 grid-institutes:grid.5640.7 schema:alternateName Department of Mathematics, Linköping University, SE-581 83, Linköping, Sweden
181 Department of Physics and Measurement Technology, Linköping University, SE-581 83, Linköping, Sweden
182 schema:name Department of Mathematics, Linköping University, SE-581 83, Linköping, Sweden
183 Department of Physics and Measurement Technology, Linköping University, SE-581 83, Linköping, Sweden
184 rdf:type schema:Organization
185 grid-institutes:grid.6341.0 schema:alternateName Department of Environmental Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
186 schema:name Department of Environmental Assessment, Swedish University of Agricultural Sciences, Box 7050, SE-750 07, Uppsala, Sweden
187 rdf:type schema:Organization
 




Preview window. Press ESC to close (or click here)


...