{"id":"https://openalex.org/W203516263","doi":null,"title":"Baseline Study for the restoration of a formerly oligotrophic, presently eutrophicated lake in northern Germany","display_name":"Baseline Study for the restoration of a formerly oligotrophic, presently eutrophicated lake in northern Germany","publication_year":2009,"publication_date":"2009-08-01","ids":{"openalex":"https://openalex.org/W203516263","mag":"203516263"},"language":"en","primary_location":{"id":"pmh:oai:epic.awi.de:26124","doi":null,"is_oa":true,"landing_page_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","pdf_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","source":{"id":"https://openalex.org/S4306400378","display_name":"Helmholtz-Zentrum f\u00fcr Polar-und Meeresforschung (Alfred-Wegener-Institut)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I2799732068","host_organization_name":"Royal Prince Alfred Hospital","host_organization_lineage":["https://openalex.org/I2799732068"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101537193","display_name":"Zahidul Islam","orcid":"https://orcid.org/0000-0002-9702-9103","observed_orcids":["https://orcid.org/0000-0002-9702-9103"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Zahidul Islam","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-9702-9103","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5101537193"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10236","display_name":"Aquatic Ecosystems and Phytoplankton Dynamics","score":0.9990000128746033,"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":0.9990000128746033,"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/T11311","display_name":"Soil and Water Nutrient Dynamics","score":0.00019999999494757503,"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/T14106","display_name":"Environmental and Sediment Control","score":0.00019999999494757503,"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/silver-lake","display_name":"Silver Lake","score":0.722000002861023},{"id":"https://openalex.org/keywords/lake-eutrophication","display_name":"lake eutrophication","score":0.8460000157356262},{"id":"https://openalex.org/keywords/lake-restoration","display_name":"lake restoration","score":0.6970000267028809},{"id":"https://openalex.org/keywords/oligotrophic-lakes","display_name":"oligotrophic lakes","score":0.7549999952316284},{"id":"https://openalex.org/keywords/phosphorus","display_name":"phosphorus","score":0.6769999861717224},{"id":"https://openalex.org/keywords/nitrogen","display_name":"nitrogen","score":0.9390000104904175},{"id":"https://openalex.org/keywords/sediment-phosphorus","display_name":"sediment phosphorus","score":0.6930000185966492},{"id":"https://openalex.org/keywords/thermocline","display_name":"thermocline","score":0.7059999704360962},{"id":"https://openalex.org/keywords/dissolved-oxygen-depletion","display_name":"dissolved oxygen depletion","score":0.6430000066757202},{"id":"https://openalex.org/keywords/turbidity","display_name":"turbidity","score":0.6660000085830688},{"id":"https://openalex.org/keywords/filamentous-algae","display_name":"filamentous algae","score":0.7179999947547913},{"id":"https://openalex.org/keywords/isoetes-lacustris","display_name":"Isoetes lacustris","score":0.8429999947547913},{"id":"https://openalex.org/keywords/emergent-vegetation","display_name":"emergent vegetation","score":0.5740000009536743},{"id":"https://openalex.org/keywords/anodonta-cygnea","display_name":"Anodonta cygnea","score":0.828000009059906},{"id":"https://openalex.org/keywords/filter-feeding-bivalves","display_name":"filter-feeding bivalves","score":0.9120000004768372},{"id":"https://openalex.org/keywords/respiration-rate","display_name":"respiration rate","score":0.7919999957084656},{"id":"https://openalex.org/keywords/intake-rate","display_name":"ingestion rate","score":0.871999979019165}],"concepts":[{"id":"https://openalex.org/C186699998","wikidata":"https://www.wikidata.org/wiki/Q156698","display_name":"Eutrophication","level":3,"score":0.7650543451309204},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5633399486541748},{"id":"https://openalex.org/C2780892065","wikidata":"https://www.wikidata.org/wiki/Q184755","display_name":"Phytoplankton","level":3,"score":0.558489978313446},{"id":"https://openalex.org/C64016661","wikidata":"https://www.wikidata.org/wiki/Q898574","display_name":"Turbidity","level":2,"score":0.5415875911712646},{"id":"https://openalex.org/C105859001","wikidata":"https://www.wikidata.org/wiki/Q932011","display_name":"Hypolimnion","level":4,"score":0.5214171409606934},{"id":"https://openalex.org/C42088612","wikidata":"https://www.wikidata.org/wiki/Q3229532","display_name":"Lake ecosystem","level":3,"score":0.5117623805999756},{"id":"https://openalex.org/C152913119","wikidata":"https://www.wikidata.org/wiki/Q30599066","display_name":"Trophic state index","level":4,"score":0.5100529789924622},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.505748987197876},{"id":"https://openalex.org/C8625798","wikidata":"https://www.wikidata.org/wiki/Q752112","display_name":"Surface water","level":2,"score":0.4761381447315216},{"id":"https://openalex.org/C2816523","wikidata":"https://www.wikidata.org/wiki/Q180184","display_name":"Sediment","level":2,"score":0.4682501554489136},{"id":"https://openalex.org/C107054158","wikidata":"https://www.wikidata.org/wiki/Q25257","display_name":"Precipitation","level":2,"score":0.4457312226295471},{"id":"https://openalex.org/C132000320","wikidata":"https://www.wikidata.org/wiki/Q186101","display_name":"Macrophyte","level":2,"score":0.43963199853897095},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.3723730444908142},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.33723509311676025},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.3070424199104309},{"id":"https://openalex.org/C110872660","wikidata":"https://www.wikidata.org/wiki/Q37813","display_name":"Ecosystem","level":2,"score":0.22574764490127563},{"id":"https://openalex.org/C142796444","wikidata":"https://www.wikidata.org/wiki/Q181394","display_name":"Nutrient","level":2,"score":0.1820131242275238},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.17714205384254456},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.10858753323554993},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.09530487656593323},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.0},{"id":"https://openalex.org/C87717796","wikidata":"https://www.wikidata.org/wiki/Q146326","display_name":"Environmental engineering","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}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:epic.awi.de:26124","doi":null,"is_oa":true,"landing_page_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","pdf_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","source":{"id":"https://openalex.org/S4306400378","display_name":"Helmholtz-Zentrum f\u00fcr Polar-und Meeresforschung (Alfred-Wegener-Institut)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I2799732068","host_organization_name":"Royal Prince Alfred Hospital","host_organization_lineage":["https://openalex.org/I2799732068"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},{"id":"mag:203516263","doi":null,"is_oa":false,"landing_page_url":"https://epic.awi.de/26124/","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:epic.awi.de:26124","doi":null,"is_oa":true,"landing_page_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","pdf_url":"https://epic.awi.de/id/eprint/26124/1/Final_thesis_Zahid.pdf","source":{"id":"https://openalex.org/S4306400378","display_name":"Helmholtz-Zentrum f\u00fcr Polar-und Meeresforschung (Alfred-Wegener-Institut)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I2799732068","host_organization_name":"Royal Prince Alfred Hospital","host_organization_lineage":["https://openalex.org/I2799732068"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"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/W203516263.pdf","grobid_xml":"https://content.openalex.org/works/W203516263.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1498061822","https://openalex.org/W2292322169","https://openalex.org/W2991977910","https://openalex.org/W2946601096","https://openalex.org/W2787769442","https://openalex.org/W7099531948","https://openalex.org/W2955470426","https://openalex.org/W234025315","https://openalex.org/W7055841410","https://openalex.org/W3158856912"],"abstract_inverted_index":{"Silver":[0,305,355,381],"Lake":[1,382,384],"(\u2015Silbersee\u2016)":[2],"is":[3,16,28,35,86,99,125,145,155,301,358,507],"situated":[4],"in":[5,121,132,168,203,219,253,304,354,472],"the":[6,46,52,74,79,82,89,114,129,133,142,153,165,171,175,194,197,214,220,224,229,247,254,269,276,289,295,310,349,363,372,380,423,427,438,455,459,473,475,489,494],"sandy":[7],"Saalian":[8],"moraine":[9],"landscape":[10],"east":[11],"\\nof":[12,309],"Bremerhaven":[13],"(Northern":[14],"Germany),":[15],"about":[17,320],"8.0":[18],"m":[19],"deep,":[20],"and":[21,40,48,106,158,177,241,291,333,392,396,430,446,479,498],"covers":[22],"\\napproximately":[23],"6.5":[24],"hectares.":[25],"The":[26,139,150,256,307],"lake":[27,53,115,143,460],"a":[29,33,93,315,329,503],"nature":[30],"reserve":[31],"but,":[32],"part":[34],"\\nnevertheless":[36],"used":[37],"for":[38,268,375,444],"bathing":[39,445],"angling.":[41],"In":[42],"order":[43],"to":[44,112,189,259,287,388,403,411,420,431,469],"understand":[45],"water":[47,54,85,135,144,154,161,176,270,282,390,439,457],"\\nsediment":[49],"chemistry":[50],"of":[51,78,141,152,174,193,200,223,266,278,294,331,348,413,458,477,481],"samples":[55,65],"were":[56,66,285,336],"collected":[57,67],"monthly":[58],"from":[59,69,163,379,415,426,437,493],"three":[60,70],"\\ndifferent":[61],"sites,":[62],"while":[63],"sediment":[64],"once":[68],"other":[71],"sites":[72],"\\nin":[73,246],"central":[75],"deep":[76,134,456],"area":[77,429],"lake.":[80,166],"During":[81],"summer,":[83],"surface":[84],"warmer":[87],"\\nthan":[88],"bottom":[90],"water,":[91],"thus":[92],"thermocline":[94],"with":[95,196],"steep":[96],"temperature":[97,330],"changes":[98],"\\ncreated.":[100],"Water":[101],"analysis":[102],"indicated":[103],"that":[104,186,238,366],"P":[105,242,267],"N":[107,240],"concentrations":[108],"are":[109,187,210,244,258,386],"too":[110],"high":[111,245],"\\nclassify":[113],"as":[116,118,227,262,449,451,486,488],"\u2015oligotrophic\u2016":[117],"it":[119],"was":[120],"former":[122],"times.":[123],"This":[124,399],"further":[126,211],"\\nsupported":[127],"by":[128,181,213,232,484],"oxygen":[130],"depletion":[131],"body":[136],"during":[137],"summer.":[138,462],"\\npH":[140],"weakly":[146],"acidic":[147],"(about":[148],"6.5).":[149],"source":[151],"only":[156,346],"\\nprecipitation,":[157],"almost":[159],"no":[160],"comes":[162],"outside":[164],"Even":[167],"shallow":[169],"\\nwaters":[170],"brownish":[172],"colorations":[173],"its":[178],"increased":[179,221],"turbidity":[180],"\\nphytoplankton":[182],"provide":[183],"light":[184],"conditions":[185],"disadvantageous":[188],"rare":[190],"primary":[191],"\\nplants":[192],"Littorelletea-community":[195],"exclusive":[198],"occurrence":[199],"Isoetes":[201],"\\nlacustris":[202],"Lower":[204],"Saxonia":[205],"(northwestern":[206],"Germany).":[207],"These":[208],"plants":[209],"\\nendangered":[212],"accelerated":[215],"eutrophication":[216],"process":[217],"reflected":[218],"\\ncompetition":[222],"emergent":[225,500],"vegetation":[226,501],"well":[228,450],"coverage":[230],"(overgrowth)":[231],"\\nfilamentous":[233],"algae.":[234],"Sediment":[235],"analyses":[236],"indicate":[237],"C,":[239],"contents":[243],"near-the-surface":[248],"layer":[249],"but":[250],"decline":[251],"downwards":[252],"sediment.":[255],"sediments":[257],"be":[260,467],"regarded":[261],"potential":[263,374],"sources":[264],"especially":[265],"\\nnutrient":[271],"regime.":[272],"\\n":[273,383],"To":[274],"evaluate":[275],"effect":[277],"filter-feeding":[279],"bivalves":[280],"on":[281],"quality,":[283],"\\nmeasurements":[284],"taken":[286],"estimate":[288],"respiration":[290,311],"ingestion":[292,334],"rates":[293,335],"\\nswan":[296],"mussel":[297],"Anodonta":[298],"cygnea,":[299],"which":[300,357],"now":[302],"abundant":[303],"Lake.":[306],"result":[308],"rate":[312,318],"experiment":[313],"had":[314],"low,":[316],"stable":[317],"at":[319,328,338],"3.07":[321],"mg":[322],"O2":[323],"d-1":[324],"\\nper":[325],"average":[326],"individual":[327],"10\u00b0C":[332],"\\ncalculated":[337],"47.5":[339],"\u03bcg":[340],"Chl-a":[341,378],"d-1.":[342],"They":[343],"can":[344],"ingest":[345],"1.9%":[347],"assumed":[350],"total":[351],"\\nChl-a":[352],"present":[353],"Lake,":[356],"not":[359,371],"significant":[360],"amount.":[361],"So,":[362],"study":[364,400],"\\npresumes":[365],"filter":[367],"feeding":[368],"effects":[369],"have":[370],"sufficient":[373],"reducing":[376],"\\nthe":[377,499],"restorations":[385],"attempted":[387],"improve":[389],"quality":[391],"life":[393],"\\nconditions,":[394],"aesthetic":[395],"recreational":[397],"needs.":[398],"advises":[401],"i)":[402],"remove":[404,432],"\\nmacrophytes,":[405],"ii)":[406],"taking":[407],"out":[408],"sediments,":[409],"iii)":[410],"control":[412,483],"runoff":[414],"adjacent":[416,495],"farm":[417],"\\nland,":[418],"iv)":[419],"cut":[421],"down":[422],"deciduous":[424],"trees":[425],"bank":[428],"live":[433],"\\nand":[434],"dead":[435],"material":[436],"edge":[440],"v)":[441],"some":[442],"regulations":[443],"\\nangling":[447],"people":[448],"vi)":[452],"mechanically":[453],"ventilate":[454],"\\nduring":[461],"\\nFuture":[463],"research":[464],"should":[465],"however":[466],"undertaken":[468],"get":[470],"insights":[471],"\\nproduction,":[474],"fluxes":[476],"nutrients":[478],"practibality":[480],"production":[482],"fish":[485],"\\nwell":[487],"possible":[490],"dystrophication":[491],"influences":[492],"raised":[496],"bog":[497],"before":[502],"very":[504],"strong":[505],"effort":[506],"put":[508],"into":[509],"restoration":[510],"\\nmeasures.":[511]},"counts_by_year":[],"updated_date":"2026-08-31T07:19:18.363097","created_date":"2016-06-24T00:00:00"}
