<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<GetRecordsResponse version="2.0.2" xmlns="http://www.opengis.net/cat/csw/2.0.2" xmlns:dct="http://purl.org/dc/terms/" xmlns:csw="http://www.opengis.net/cat/csw" xmlns:gml="http://www.opengis.net/gml" xmlns:gts="http://www.isotc211.org/2005/gts" xmlns:ogc="http://www.opengis.net/ogc" xmlns:ows="http://www.opengis.net/ows" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gmd="http://www.isotc211.org/2005/gmd">
    <SearchStatus timestamp="2026-04-14T07:54:40.981+02:00"/>
    <SearchResults numberOfRecordsMatched="1" numberOfRecordsReturned="1">
        <gmd:MD_Metadata xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://schemas.opengis.net/iso/19139/20060504/gmd/gmd.xsd" uuid="8ab590a216a086960116e8b188cd085a" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:srv="http://www.isotc211.org/2005/srv" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gfm="http://www.isotc211.org/2005/gfm" xmlns:base="http://www.disy.de/preludio2/base">
            <gmd:fileIdentifier>
                <gco:CharacterString>8ab590a216a086960116e8b188cd085a</gco:CharacterString>
            </gmd:fileIdentifier>
            <gmd:language>
                <gmd:LanguageCode codeListValue="ger" codeList="http://www.loc.gov/standards/iso639-2/">ger</gmd:LanguageCode>
            </gmd:language>
            <gmd:characterSet>
                <gmd:MD_CharacterSetCode codeListValue="utf8" codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#MD_CharacterSetCode">utf8</gmd:MD_CharacterSetCode>
            </gmd:characterSet>
            <gmd:hierarchyLevel>
                <gmd:MD_ScopeCode codeListValue="dataset" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_ScopeCode">dataset</gmd:MD_ScopeCode>
            </gmd:hierarchyLevel>
            <gmd:contact>
                <gmd:CI_ResponsibleParty uuid="8ab59098130132b7011304ff9c115b58">
                    <gmd:individualName>
                        <gco:CharacterString>Karin Näpfel</gco:CharacterString>
                    </gmd:individualName>
                    <gmd:organisationName>
                        <gco:CharacterString>NLWKN Betriebsstelle Brake-Oldenburg</gco:CharacterString>
                    </gmd:organisationName>
                    <gmd:positionName>
                        <gco:CharacterString>Bearbeiter</gco:CharacterString>
                    </gmd:positionName>
                    <gmd:contactInfo>
                        <gmd:CI_Contact uuid="8ab59098130132b7011304ffe7735b59">
                            <gmd:phone>
                                <gmd:CI_Telephone uuid="8ab59098130132b7011304ffe7735b5a">
                                    <gmd:voice>
                                        <gco:CharacterString>04932/916-164</gco:CharacterString>
                                    </gmd:voice>
                                    <gmd:facsimile>
                                        <gco:CharacterString>04932/1394</gco:CharacterString>
                                    </gmd:facsimile>
                                </gmd:CI_Telephone>
                            </gmd:phone>
                            <gmd:address>
                                <gmd:CI_Address uuid="8ab59098130132b7011304ffe7735b5b">
                                    <gmd:deliveryPoint>
                                        <gco:CharacterString>An der Mühle 5</gco:CharacterString>
                                    </gmd:deliveryPoint>
                                    <gmd:city>
                                        <gco:CharacterString>Norderney</gco:CharacterString>
                                    </gmd:city>
                                    <gmd:postalCode>
                                        <gco:CharacterString>26548</gco:CharacterString>
                                    </gmd:postalCode>
                                    <gmd:country>
                                        <gco:CharacterString>Germany</gco:CharacterString>
                                    </gmd:country>
                                    <gmd:electronicMailAddress>
                                        <gco:CharacterString>karin.naepfel@nlwkn-ny.niedersachsen.de</gco:CharacterString>
                                    </gmd:electronicMailAddress>
                                </gmd:CI_Address>
                            </gmd:address>
                            <gmd:onlineResource>
                                <gmd:CI_OnlineResource uuid="8ab59098130132b7011304ffe7735b5c">
                                    <gmd:linkage>
                                        <gmd:URL>http://www.nlwkn.de/</gmd:URL>
                                    </gmd:linkage>
                                    <gmd:description>
                                        <gco:CharacterString>Homepage des NLWKN</gco:CharacterString>
                                    </gmd:description>
                                    <gmd:function>
                                        <gmd:CI_OnLineFunctionCode codeListValue="information" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_OnLineFunctionCode">information</gmd:CI_OnLineFunctionCode>
                                    </gmd:function>
                                </gmd:CI_OnlineResource>
                            </gmd:onlineResource>
                            <gmd:hoursOfService>
                                <gco:CharacterString>Montag bis Donnerstag 9 bis 16 Uhr; Freitag 9 bis 12 Uhr</gco:CharacterString>
                            </gmd:hoursOfService>
                        </gmd:CI_Contact>
                    </gmd:contactInfo>
                    <gmd:role>
                        <gmd:CI_RoleCode codeListValue="pointOfContact" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode">pointOfContact</gmd:CI_RoleCode>
                    </gmd:role>
                </gmd:CI_ResponsibleParty>
            </gmd:contact>
            <gmd:dateStamp>
                <gco:DateTime>2021-12-08T16:00:04+01:00</gco:DateTime>
            </gmd:dateStamp>
            <gmd:metadataStandardName>
                <gco:CharacterString>ISO 19115:2003 NOKIS-Profil</gco:CharacterString>
            </gmd:metadataStandardName>
            <gmd:metadataStandardVersion>
                <gco:CharacterString>1.0</gco:CharacterString>
            </gmd:metadataStandardVersion>
            <gmd:identificationInfo>
                <gmd:MD_DataIdentification uuid="8ab590a216a086960116e8b2f55e0861">
                    <gmd:citation>
                        <gmd:CI_Citation uuid="ff8081812efb5803012f007a8235125c">
                            <gmd:title>
                                <gco:CharacterString>Bericht: "Makrozoobenthos: Methodische Studie Wesermündung (1995)"</gco:CharacterString>
                            </gmd:title>
                            <gmd:alternateTitle>
                                <gco:CharacterString>MZB_MethW</gco:CharacterString>
                            </gmd:alternateTitle>
                            <gmd:date>
                                <gmd:CI_Date uuid="4028478a1b45c9e2011b45da55ca0898">
                                    <gmd:date>
                                        <gco:Date>1995-01-01</gco:Date>
                                    </gmd:date>
                                    <gmd:dateType>
                                        <gmd:CI_DateTypeCode codeListValue="publication" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_DateTypeCode">publication</gmd:CI_DateTypeCode>
                                    </gmd:dateType>
                                </gmd:CI_Date>
                            </gmd:date>
                            <gmd:identifier>
                                <gmd:MD_Identifier uuid="ff8081812efb5803012f007a8237125d">
                                    <gmd:code>
                                        <gco:CharacterString>https://registry.gdi-de.org/id/de.ni.mu.nlwkn.csw/8ab590a216a086960116e8b2f55e0861</gco:CharacterString>
                                    </gmd:code>
                                </gmd:MD_Identifier>
                            </gmd:identifier>
                            <gmd:presentationForm>
                                <gmd:CI_PresentationFormCode codeListValue="documentDigital" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_PresentationFormCode">documentDigital</gmd:CI_PresentationFormCode>
                            </gmd:presentationForm>
                            <gmd:series>
                                <gmd:CI_Series uuid="8ab590a216a086960116e8b2f55e0867">
                                    <gmd:name>
                                        <gco:CharacterString>Kolbe, K. (1995): Methodische Studie zum erforderlichen Probenumfang beim Benthosmonitoring in den Brackwasserwatten der Wesermündung. Berichte der Forschungsstelle Küste. Band 40. Norderney: 97-100.</gco:CharacterString>
                                    </gmd:name>
                                    <gmd:page>
                                        <gco:CharacterString>97-100</gco:CharacterString>
                                    </gmd:page>
                                </gmd:CI_Series>
                            </gmd:series>
                            <gmd:otherCitationDetails>
                                <gco:CharacterString>Bericht liegt schriftlich vor</gco:CharacterString>
                            </gmd:otherCitationDetails>
                        </gmd:CI_Citation>
                    </gmd:citation>
                    <gmd:abstract>
                        <gco:CharacterString>Um die Qualität der im Zuge eines Benthosmonitoring im Eulitoral der Wesermündung gewonnenen Abundanz-Werte zu überprüfen, wurde an einer der Stationen eine exemplarische Beprobung mit großem Stichprobenumfang (n=50) durchgeführt. Die aus dieser Untersuchung gewonnenen Mittelwerte und Varianzen der Abundanzen von sechs Arten wurden in eine von ELLIOT (1971) vorgeschlagene Formel eingesetzt. Aus den Berechnungen geht hervor, dass die bisherige Beprobungspraxis (n=3) bei der Abundanzberechung je nach Art zu einem Fehler von 38-286% führt. Eine Erhöhung des Stichprobenumfanges auf n=8 verringert bei vie der sechs Arten den Fehler auf &lt;50%. Erst mit 11-46 Einzelproben kann der Fehler bei diesen Arten auf 20 % gedrückt werden. To test the quality of data from a monitoring programme on macrozoobenthos abundance, a survey with a large number of sampling units (n=50) has been carried out at a permanent station in the eulitoral of the Weser estuary. Arithmetic mean and variance of the abundances of six species were put into a formula proposed by ELLIOT (1971). The calculations indicate that the current sampling strategy (N=3) to estimate the abundances leads to an error of 30-286% of the mean, depending on the species. The enhancement oft the number of sampling units to n=8 reduces the error for four of the six species to 50%. For these species the error can be forced down to 20% with 11-46 sampling units.</gco:CharacterString>
                    </gmd:abstract>
                    <gmd:purpose>
                        <gco:CharacterString>Methodische Studie Makrozoobentosbeprobung</gco:CharacterString>
                    </gmd:purpose>
                    <gmd:status>
                        <gmd:MD_ProgressCode codeListValue="completed" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_ProgressCode">completed</gmd:MD_ProgressCode>
                    </gmd:status>
                    <gmd:pointOfContact>
                        <gmd:CI_ResponsibleParty uuid="ff8081812efb5803012efd273f020001">
                            <gmd:individualName>
                                <gco:CharacterString>Jürgen Knaack</gco:CharacterString>
                            </gmd:individualName>
                            <gmd:organisationName>
                                <gco:CharacterString>Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz</gco:CharacterString>
                            </gmd:organisationName>
                            <gmd:contactInfo>
                                <gmd:CI_Contact uuid="ff8081812efb5803012efd29ecf70002">
                                    <gmd:phone>
                                        <gmd:CI_Telephone uuid="ff8081812efb5803012efd29ecf80003">
                                            <gmd:voice>
                                                <gco:CharacterString>+49 441 95069-171</gco:CharacterString>
                                            </gmd:voice>
                                        </gmd:CI_Telephone>
                                    </gmd:phone>
                                    <gmd:address>
                                        <gmd:CI_Address uuid="ff8081812efb5803012efd29ecf80004">
                                            <gmd:deliveryPoint>
                                                <gco:CharacterString>Im Dreieck 12</gco:CharacterString>
                                            </gmd:deliveryPoint>
                                            <gmd:city>
                                                <gco:CharacterString>Oldenburg</gco:CharacterString>
                                            </gmd:city>
                                            <gmd:postalCode>
                                                <gco:CharacterString>26127</gco:CharacterString>
                                            </gmd:postalCode>
                                            <gmd:country>
                                                <gco:CharacterString>Germany</gco:CharacterString>
                                            </gmd:country>
                                            <gmd:electronicMailAddress>
                                                <gco:CharacterString>juergen.knaack@nlwkn.niedersachsen.de</gco:CharacterString>
                                            </gmd:electronicMailAddress>
                                        </gmd:CI_Address>
                                    </gmd:address>
                                    <gmd:onlineResource>
                                        <gmd:CI_OnlineResource uuid="ff8081812efb5803012f00d2915f16bb">
                                            <gmd:linkage>
                                                <gmd:URL>https://www.nlwkn.niedersachsen.de</gmd:URL>
                                            </gmd:linkage>
                                            <gmd:description>
                                                <gco:CharacterString>Homepage des NLWKN</gco:CharacterString>
                                            </gmd:description>
                                            <gmd:function>
                                                <gmd:CI_OnLineFunctionCode codeListValue="information" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_OnLineFunctionCode">information</gmd:CI_OnLineFunctionCode>
                                            </gmd:function>
                                        </gmd:CI_OnlineResource>
                                    </gmd:onlineResource>
                                </gmd:CI_Contact>
                            </gmd:contactInfo>
                            <gmd:role>
                                <gmd:CI_RoleCode codeListValue="pointOfContact" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode">pointOfContact</gmd:CI_RoleCode>
                            </gmd:role>
                        </gmd:CI_ResponsibleParty>
                    </gmd:pointOfContact>
                    <gmd:resourceMaintenance>
                        <gmd:MD_MaintenanceInformation uuid="8ab590a216a086960116e8b2f55e087d">
                            <gmd:maintenanceAndUpdateFrequency>
                                <gmd:MD_MaintenanceFrequencyCode codeListValue="notPlanned" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_MaintenanceFrequencyCode">notPlanned</gmd:MD_MaintenanceFrequencyCode>
                            </gmd:maintenanceAndUpdateFrequency>
                        </gmd:MD_MaintenanceInformation>
                    </gmd:resourceMaintenance>
                    <gmd:descriptiveKeywords>
                        <gmd:MD_Keywords uuid="8ab590a216a086960116e8b2f55e086f">
                            <gmd:keyword>
                                <gco:CharacterString>Makrozoobenthos Abundanz Makrofauna Methodik NLWKN Studie Benthosmonitoring Probenumfang Beprobung</gco:CharacterString>
                            </gmd:keyword>
                            <gmd:type>
                                <gmd:MD_KeywordTypeCode codeListValue="theme" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode">theme</gmd:MD_KeywordTypeCode>
                            </gmd:type>
                        </gmd:MD_Keywords>
                    </gmd:descriptiveKeywords>
                    <gmd:descriptiveKeywords>
                        <gmd:MD_Keywords uuid="8ab590a216a086960116e8b2f55e0879">
                            <gmd:keyword>
                                <gco:CharacterString>Wesermündung Weser Lunewatt</gco:CharacterString>
                            </gmd:keyword>
                            <gmd:type>
                                <gmd:MD_KeywordTypeCode codeListValue="place" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_KeywordTypeCode">place</gmd:MD_KeywordTypeCode>
                            </gmd:type>
                        </gmd:MD_Keywords>
                    </gmd:descriptiveKeywords>
                    <gmd:resourceConstraints>
                        <gmd:MD_LegalConstraints uuid="ff8081812efb5803012f007a8235125b">
                            <gmd:accessConstraints>
                                <gmd:MD_RestrictionCode codeListValue="copyright" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_RestrictionCode">copyright</gmd:MD_RestrictionCode>
                            </gmd:accessConstraints>
                            <gmd:useConstraints>
                                <gmd:MD_RestrictionCode codeListValue="copyright" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_RestrictionCode">copyright</gmd:MD_RestrictionCode>
                            </gmd:useConstraints>
                        </gmd:MD_LegalConstraints>
                    </gmd:resourceConstraints>
                    <gmd:spatialRepresentationType>
                        <gmd:MD_SpatialRepresentationTypeCode codeListValue="textTable" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_SpatialRepresentationTypeCode">textTable</gmd:MD_SpatialRepresentationTypeCode>
                    </gmd:spatialRepresentationType>
                    <gmd:language>
                        <gmd:LanguageCode codeListValue="ger" codeList="http://www.loc.gov/standards/iso639-2/">ger</gmd:LanguageCode>
                    </gmd:language>
                    <gmd:language>
                        <gmd:LanguageCode codeListValue="ger" codeList="http://www.loc.gov/standards/iso639-2/">ger</gmd:LanguageCode>
                    </gmd:language>
                    <gmd:characterSet>
                        <gmd:MD_CharacterSetCode codeListValue="8859part1" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_CharacterSetCode">8859part1</gmd:MD_CharacterSetCode>
                    </gmd:characterSet>
                    <gmd:topicCategory>
                        <gmd:MD_TopicCategoryCode>biota</gmd:MD_TopicCategoryCode>
                    </gmd:topicCategory>
                    <gmd:topicCategory>
                        <gmd:MD_TopicCategoryCode>oceans</gmd:MD_TopicCategoryCode>
                    </gmd:topicCategory>
                    <gmd:topicCategory>
                        <gmd:MD_TopicCategoryCode>environment</gmd:MD_TopicCategoryCode>
                    </gmd:topicCategory>
                    <gmd:extent>
                        <gmd:EX_Extent uuid="8ab590a216a086960116e8b2f55e087e">
                            <gmd:geographicElement>
                                <gmd:EX_GeographicBoundingBox uuid="8ab590a216a086960116e8b2f55e087f">
                                    <gmd:westBoundLongitude>
                                        <gco:Decimal>8.5255069630</gco:Decimal>
                                    </gmd:westBoundLongitude>
                                    <gmd:eastBoundLongitude>
                                        <gco:Decimal>8.5876462222</gco:Decimal>
                                    </gmd:eastBoundLongitude>
                                    <gmd:southBoundLatitude>
                                        <gco:Decimal>53.5023164444</gco:Decimal>
                                    </gmd:southBoundLatitude>
                                    <gmd:northBoundLatitude>
                                        <gco:Decimal>53.5644557037</gco:Decimal>
                                    </gmd:northBoundLatitude>
                                </gmd:EX_GeographicBoundingBox>
                            </gmd:geographicElement>
                        </gmd:EX_Extent>
                    </gmd:extent>
                </gmd:MD_DataIdentification>
            </gmd:identificationInfo>
            <gmd:distributionInfo>
                <gmd:MD_Distribution uuid="8ab590a216a086960116e8b2f54e085c">
                    <gmd:distributor>
                        <gmd:MD_Distributor uuid="8ab590a216a086960116e8b2f54e085d">
                            <gmd:distributorContact>
                                <gmd:CI_ResponsibleParty uuid="ff8081812efb5803012efd273f020001">
                                    <gmd:individualName>
                                        <gco:CharacterString>Jürgen Knaack</gco:CharacterString>
                                    </gmd:individualName>
                                    <gmd:organisationName>
                                        <gco:CharacterString>Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz</gco:CharacterString>
                                    </gmd:organisationName>
                                    <gmd:contactInfo>
                                        <gmd:CI_Contact uuid="ff8081812efb5803012efd29ecf70002">
                                            <gmd:phone>
                                                <gmd:CI_Telephone uuid="ff8081812efb5803012efd29ecf80003">
                                                    <gmd:voice>
                                                        <gco:CharacterString>+49 441 95069-171</gco:CharacterString>
                                                    </gmd:voice>
                                                </gmd:CI_Telephone>
                                            </gmd:phone>
                                            <gmd:address>
                                                <gmd:CI_Address uuid="ff8081812efb5803012efd29ecf80004">
                                                    <gmd:deliveryPoint>
                                                        <gco:CharacterString>Im Dreieck 12</gco:CharacterString>
                                                    </gmd:deliveryPoint>
                                                    <gmd:city>
                                                        <gco:CharacterString>Oldenburg</gco:CharacterString>
                                                    </gmd:city>
                                                    <gmd:postalCode>
                                                        <gco:CharacterString>26127</gco:CharacterString>
                                                    </gmd:postalCode>
                                                    <gmd:country>
                                                        <gco:CharacterString>Germany</gco:CharacterString>
                                                    </gmd:country>
                                                    <gmd:electronicMailAddress>
                                                        <gco:CharacterString>juergen.knaack@nlwkn.niedersachsen.de</gco:CharacterString>
                                                    </gmd:electronicMailAddress>
                                                </gmd:CI_Address>
                                            </gmd:address>
                                            <gmd:onlineResource>
                                                <gmd:CI_OnlineResource uuid="ff8081812efb5803012f00d2915f16bb">
                                                    <gmd:linkage>
                                                        <gmd:URL>https://www.nlwkn.niedersachsen.de</gmd:URL>
                                                    </gmd:linkage>
                                                    <gmd:description>
                                                        <gco:CharacterString>Homepage des NLWKN</gco:CharacterString>
                                                    </gmd:description>
                                                    <gmd:function>
                                                        <gmd:CI_OnLineFunctionCode codeListValue="information" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_OnLineFunctionCode">information</gmd:CI_OnLineFunctionCode>
                                                    </gmd:function>
                                                </gmd:CI_OnlineResource>
                                            </gmd:onlineResource>
                                        </gmd:CI_Contact>
                                    </gmd:contactInfo>
                                    <gmd:role>
                                        <gmd:CI_RoleCode codeListValue="pointOfContact" codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode">pointOfContact</gmd:CI_RoleCode>
                                    </gmd:role>
                                </gmd:CI_ResponsibleParty>
                            </gmd:distributorContact>
                        </gmd:MD_Distributor>
                    </gmd:distributor>
                </gmd:MD_Distribution>
            </gmd:distributionInfo>
            <gmd:metadataMaintenance>
                <gmd:MD_MaintenanceInformation uuid="8ab590a216a086960116e8b2f54e085b">
                    <gmd:maintenanceAndUpdateFrequency>
                        <gmd:MD_MaintenanceFrequencyCode codeListValue="asNeeded" codeList="http://www.isotc211.org/2005/resources/codeList.xml#MD_MaintenanceFrequencyCode">asNeeded</gmd:MD_MaintenanceFrequencyCode>
                    </gmd:maintenanceAndUpdateFrequency>
                </gmd:MD_MaintenanceInformation>
            </gmd:metadataMaintenance>
        </gmd:MD_Metadata>
    </SearchResults>
</GetRecordsResponse>

