{"id":"https://openalex.org/W2053559641","doi":"https://doi.org/10.4236/jep.2013.46a004","title":"Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes","display_name":"Integrated Assessment of the Ecological Status of Bulgarian Lowland and Semi-Mountain Natural Lakes","publication_year":2013,"publication_date":"2013-01-01","ids":{"openalex":"https://openalex.org/W2053559641","doi":"https://doi.org/10.4236/jep.2013.46a004","mag":"2053559641"},"language":"en","primary_location":{"id":"doi:10.4236/jep.2013.46a004","doi":"https://doi.org/10.4236/jep.2013.46a004","is_oa":true,"landing_page_url":"https://doi.org/10.4236/jep.2013.46a004","pdf_url":"http://www.scirp.org/journal/PaperDownload.aspx?paperID=33562","source":{"id":"https://openalex.org/S115225164","display_name":"Journal of Environmental Protection","issn_l":"2152-2197","issn":["2152-2197","2152-2219"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Environmental Protection","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"http://www.scirp.org/journal/PaperDownload.aspx?paperID=33562","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5015385601","display_name":"Gana Gecheva","orcid":"https://orcid.org/0000-0001-5747-255X","observed_orcids":["https://orcid.org/0000-0001-5747-255X"]},"institutions":[{"id":"https://openalex.org/I192878625","display_name":"Plovdiv University","ror":"https://ror.org/0545p3742","country_code":"BG","type":"education","lineage":["https://openalex.org/I192878625"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Gana Gecheva","raw_affiliation_strings":["Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;","institution_ids":["https://openalex.org/I192878625"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110326431","display_name":"Lilyana D. Yurukova","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210127464","display_name":"Institute of Biodiversity and Ecosystem Research","ror":"https://ror.org/03eywck07","country_code":"BG","type":"facility","lineage":["https://openalex.org/I24768866","https://openalex.org/I4210127464"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Lilyana Yurukova","raw_affiliation_strings":["Institute of Biodiversity and Ecosystem Research , Bulgarian Academy of Sciences , Sofia , Bulgaria","#TAB#Bulgarian Academy of Sciences"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biodiversity and Ecosystem Research , Bulgarian Academy of Sciences , Sofia , Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210127464"]},{"raw_affiliation_string":"#TAB#Bulgarian Academy of Sciences","institution_ids":["https://openalex.org/I24768866"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057537544","display_name":"Svetoslav D. Cheshmedjiev","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I192878625","display_name":"Plovdiv University","ror":"https://ror.org/0545p3742","country_code":"BG","type":"education","lineage":["https://openalex.org/I192878625"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Svetoslav Cheshmedjiev","raw_affiliation_strings":["Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;","institution_ids":["https://openalex.org/I192878625"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012821763","display_name":"Emilia D. Varadinova","orcid":"https://orcid.org/0000-0002-2382-9191","observed_orcids":["https://orcid.org/0000-0002-2382-9191"]},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210127464","display_name":"Institute of Biodiversity and Ecosystem Research","ror":"https://ror.org/03eywck07","country_code":"BG","type":"facility","lineage":["https://openalex.org/I24768866","https://openalex.org/I4210127464"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Emilia Varadinova","raw_affiliation_strings":["Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria","institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210127464"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036029594","display_name":"Detelina Belkinova","orcid":"https://orcid.org/0000-0003-0738-4871","observed_orcids":["https://orcid.org/0000-0003-0738-4871"]},"institutions":[{"id":"https://openalex.org/I192878625","display_name":"Plovdiv University","ror":"https://ror.org/0545p3742","country_code":"BG","type":"education","lineage":["https://openalex.org/I192878625"]}],"countries":["BG"],"is_corresponding":false,"raw_author_name":"Detelina Belkinova","raw_affiliation_strings":["Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Biology, Plovdiv University \"P. Hilendarski\", Plovdiv, Bulgaria;","institution_ids":["https://openalex.org/I192878625"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.2103,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.48539216,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"04","issue":"06","first_page":"29","last_page":"37"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10236","display_name":"Aquatic Ecosystems and Phytoplankton Dynamics","score":0.7279999852180481,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10236","display_name":"Aquatic Ecosystems and Phytoplankton Dynamics","score":0.7279999852180481,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10669","display_name":"Freshwater macroinvertebrate diversity and ecology","score":0.09790000319480896,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14106","display_name":"Environmental and Sediment Control","score":0.09669999778270721,"subfield":{"id":"https://openalex.org/subfields/2308","display_name":"Management, Monitoring, Policy and Law"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/lake-ecological-status","display_name":"lake ecological status","score":0.8650000095367432},{"id":"https://openalex.org/keywords/water-framework-directive","display_name":"Water Framework Directive","score":0.8059999942779541},{"id":"https://openalex.org/keywords/reference-conditions","display_name":"reference conditions","score":0.8830000162124634},{"id":"https://openalex.org/keywords/lowland-lakes","display_name":"lowland lakes","score":0.847000002861023},{"id":"https://openalex.org/keywords/phytoplankton","display_name":"phytoplankton","score":0.8790000081062317},{"id":"https://openalex.org/keywords/aquatic-plants","display_name":"aquatic plants","score":0.8920000195503235},{"id":"https://openalex.org/keywords/benthic-macroinvertebrates","display_name":"benthic macroinvertebrates","score":1.0},{"id":"https://openalex.org/keywords/physicochemical-parameters","display_name":"physicochemical parameters","score":0.871999979019165},{"id":"https://openalex.org/keywords/lake-classification","display_name":"lake classification","score":0.6499999761581421},{"id":"https://openalex.org/keywords/baseline-assessment","display_name":"baseline assessment","score":0.47699999809265137}],"concepts":[{"id":"https://openalex.org/C132000320","wikidata":"https://www.wikidata.org/wiki/Q186101","display_name":"Macrophyte","level":2,"score":0.856745719909668},{"id":"https://openalex.org/C2777610350","wikidata":"https://www.wikidata.org/wiki/Q1462895","display_name":"Water Framework Directive","level":3,"score":0.8566501140594482},{"id":"https://openalex.org/C2780343019","wikidata":"https://www.wikidata.org/wiki/Q7918","display_name":"Bulgarian","level":2,"score":0.5430741310119629},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5005323886871338},{"id":"https://openalex.org/C83042747","wikidata":"https://www.wikidata.org/wiki/Q686881","display_name":"Benthic zone","level":2,"score":0.49554359912872314},{"id":"https://openalex.org/C13474642","wikidata":"https://www.wikidata.org/wiki/Q43806","display_name":"Invertebrate","level":2,"score":0.4713938534259796},{"id":"https://openalex.org/C2776608160","wikidata":"https://www.wikidata.org/wiki/Q4785462","display_name":"Natural (archaeology)","level":2,"score":0.46993571519851685},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.4666585624217987},{"id":"https://openalex.org/C2780393702","wikidata":"https://www.wikidata.org/wiki/Q5333223","display_name":"Ecological assessment","level":2,"score":0.45475685596466064},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.38620129227638245},{"id":"https://openalex.org/C107826830","wikidata":"https://www.wikidata.org/wiki/Q929380","display_name":"Environmental resource management","level":1,"score":0.3462744355201721},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.32595306634902954},{"id":"https://openalex.org/C2780797713","wikidata":"https://www.wikidata.org/wiki/Q625376","display_name":"Water quality","level":2,"score":0.2397308349609375},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09046167135238647},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.07515990734100342},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4236/jep.2013.46a004","doi":"https://doi.org/10.4236/jep.2013.46a004","is_oa":true,"landing_page_url":"https://doi.org/10.4236/jep.2013.46a004","pdf_url":"http://www.scirp.org/journal/PaperDownload.aspx?paperID=33562","source":{"id":"https://openalex.org/S115225164","display_name":"Journal of Environmental Protection","issn_l":"2152-2197","issn":["2152-2197","2152-2219"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Environmental Protection","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.4236/jep.2013.46a004","doi":"https://doi.org/10.4236/jep.2013.46a004","is_oa":true,"landing_page_url":"https://doi.org/10.4236/jep.2013.46a004","pdf_url":"http://www.scirp.org/journal/PaperDownload.aspx?paperID=33562","source":{"id":"https://openalex.org/S115225164","display_name":"Journal of Environmental Protection","issn_l":"2152-2197","issn":["2152-2197","2152-2219"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Environmental Protection","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Clean water and sanitation","id":"https://metadata.un.org/sdg/6","score":0.965499997138977}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2053559641.pdf","grobid_xml":"https://content.openalex.org/works/W2053559641.grobid-xml"},"referenced_works_count":21,"referenced_works":["https://openalex.org/W621328678","https://openalex.org/W1568561814","https://openalex.org/W1574810993","https://openalex.org/W1973761662","https://openalex.org/W1974514456","https://openalex.org/W1990688317","https://openalex.org/W2001200569","https://openalex.org/W2007881441","https://openalex.org/W2042960419","https://openalex.org/W2053015593","https://openalex.org/W2080321309","https://openalex.org/W2095988172","https://openalex.org/W2109167739","https://openalex.org/W2114628556","https://openalex.org/W2150761052","https://openalex.org/W2155061600","https://openalex.org/W2328111766","https://openalex.org/W2772505496","https://openalex.org/W3145717764","https://openalex.org/W4248441992","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2154311399","https://openalex.org/W2053015593","https://openalex.org/W2159833957","https://openalex.org/W7100096084","https://openalex.org/W2124680197","https://openalex.org/W7098449857","https://openalex.org/W2991278990","https://openalex.org/W7223391740","https://openalex.org/W6922102476","https://openalex.org/W1510523891"],"abstract_inverted_index":{"This":[0,98],"work":[1],"focuses":[2],"on":[3],"an":[4,44],"integrated":[5,45],"approach":[6],"for":[7,43],"lake":[8,107],"ecological":[9,64],"status":[10,65],"assessment,":[11],"elaborated":[12],"according":[13],"to":[14,59],"the":[15,18,41,48,106,123],"requirements":[16,124],"of":[17,50,68,92,125],"European":[19],"Water":[20],"Framework":[21],"Directive":[22],"(WFD).":[23],"Data":[24],"from":[25,36],"five":[26,63],"lowland":[27],"and":[28,47,73],"semi-mountain":[29],"lakes":[30,61,94],"in":[31,57,113,120],"Bulgaria":[32],"(Southeast":[33],"Europe)":[34],"collected":[35],"two":[37],"years":[38],"(2011-2012)":[39],"form":[40],"basis":[42],"assessment":[46],"definition":[49],"reference":[51,90],"conditions.":[52],"Several":[53],"metrics":[54],"were":[55,82],"applied":[56],"combination,":[58],"classify":[60],"into":[62],"classes.":[66],"Assemblages":[67],"aquatic":[69],"organisms:":[70],"phytoplankton,":[71],"macrophytes":[72],"benthic":[74],"macroinvertebrates,":[75],"together":[76],"with":[77,122],"11":[78],"supporting":[79],"physico-chemical":[80],"parameters":[81],"studied.":[83],"The":[84],"assessed":[85,112],"unique":[86],"conditions":[87,91],"suggested":[88],"that":[89,109],"Bulgarian":[93],"have":[95],"natural":[96],"variability.":[97],"first":[99],"baseline":[100],"study":[101],"illustrated":[102],"specific":[103],"cases":[104],"within":[105],"types":[108],"should":[110],"be":[111],"details":[114],"before":[115],"providing":[116],"standardized":[117],"classification":[118],"systems":[119],"compliance":[121],"WFD.":[126]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}