{"id":"https://openalex.org/W2363548987","doi":null,"title":"Aquatic plants in the rice fields of the Tagus Valley, Portugal","display_name":"Aquatic plants in the rice fields of the Tagus Valley, Portugal","publication_year":1999,"publication_date":"1999-01-01","ids":{"openalex":"https://openalex.org/W2363548987","mag":"2363548987"},"language":"en","primary_location":{"id":"mag:2363548987","doi":null,"is_oa":false,"landing_page_url":"https://link.springer.com/content/pdf/10.1007%2F978-94-017-0922-4_10.pdf","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},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5112192223","display_name":"Escola Superior","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Escola Superior","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032846524","display_name":"Agraria de Santa","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Agraria de Santa","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5112211643","display_name":"Silvia R. M. Pedro","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Silvia Regina de Menezes Pedro","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"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/T10774","display_name":"Weed Control and Herbicide Applications","score":0.41530001163482666,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10774","display_name":"Weed Control and Herbicide Applications","score":0.41530001163482666,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10005","display_name":"Ecology and Vegetation Dynamics Studies","score":0.2831999957561493,"subfield":{"id":"https://openalex.org/subfields/2309","display_name":"Nature and Landscape Conservation"},"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/T12618","display_name":"Botany and Plant Ecology Studies","score":0.1876000016927719,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/aquatic-plants","display_name":"aquatic plants","score":0.9430000185966492},{"id":"https://openalex.org/keywords/paddy-fields","display_name":"paddy fields","score":0.8600000143051147},{"id":"https://openalex.org/keywords/irrigated-rice","display_name":"irrigated rice","score":0.7509999871253967},{"id":"https://openalex.org/keywords/weed-flora","display_name":"weed flora","score":0.5559999942779541},{"id":"https://openalex.org/keywords/vascular-plants","display_name":"vascular plants","score":0.7480000257492065},{"id":"https://openalex.org/keywords/algae","display_name":"algae","score":0.9290000200271606},{"id":"https://openalex.org/keywords/hydrodictyon-reticulatum","display_name":"Hydrodictyon reticulatum","score":0.9929999709129333},{"id":"https://openalex.org/keywords/chara-vulgaris","display_name":"Chara vulgaris","score":0.9990000128746033},{"id":"https://openalex.org/keywords/barnyard-grass","display_name":"Echinochloa crus-galli","score":0.9700000286102295},{"id":"https://openalex.org/keywords/introduced-species","display_name":"introduced species","score":0.7919999957084656},{"id":"https://openalex.org/keywords/neophytes","display_name":"neophytes","score":0.9129999876022339},{"id":"https://openalex.org/keywords/heteranthera-limosa","display_name":"Heteranthera limosa","score":0.9010000228881836},{"id":"https://openalex.org/keywords/heteranthera-reniformis","display_name":"Heteranthera reniformis","score":0.9990000128746033},{"id":"https://openalex.org/keywords/red-rice","display_name":"red rice","score":0.9649999737739563},{"id":"https://openalex.org/keywords/weed-distribution","display_name":"weed distribution","score":0.6110000014305115},{"id":"https://openalex.org/keywords/tagus-valley","display_name":"Tagus Valley","score":0.9490000009536743}],"concepts":[{"id":"https://openalex.org/C2778556696","wikidata":"https://www.wikidata.org/wiki/Q155843","display_name":"Cyperaceae","level":3,"score":0.8157727718353271},{"id":"https://openalex.org/C2775891814","wikidata":"https://www.wikidata.org/wiki/Q101879","display_name":"Weed","level":2,"score":0.7250033617019653},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.7104645371437073},{"id":"https://openalex.org/C2779357833","wikidata":"https://www.wikidata.org/wiki/Q163965","display_name":"Echinochloa","level":3,"score":0.7043619155883789},{"id":"https://openalex.org/C2778543611","wikidata":"https://www.wikidata.org/wiki/Q161426","display_name":"Oryza sativa","level":3,"score":0.6852620244026184},{"id":"https://openalex.org/C46757340","wikidata":"https://www.wikidata.org/wiki/Q43238","display_name":"Poaceae","level":2,"score":0.6765249371528625},{"id":"https://openalex.org/C2777988379","wikidata":"https://www.wikidata.org/wiki/Q2333069","display_name":"Paspalum","level":2,"score":0.6014145612716675},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.5306289196014404},{"id":"https://openalex.org/C85582077","wikidata":"https://www.wikidata.org/wiki/Q842623","display_name":"Paddy field","level":2,"score":0.49998021125793457},{"id":"https://openalex.org/C200724805","wikidata":"https://www.wikidata.org/wiki/Q1990792","display_name":"Alien","level":4,"score":0.4780588448047638},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.4680015444755554},{"id":"https://openalex.org/C2776161486","wikidata":"https://www.wikidata.org/wiki/Q7305375","display_name":"Red rice","level":2,"score":0.4196872115135193},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.06579503417015076},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.0},{"id":"https://openalex.org/C52130261","wikidata":"https://www.wikidata.org/wiki/Q39825","display_name":"Census","level":3,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2363548987","doi":null,"is_oa":false,"landing_page_url":"https://link.springer.com/content/pdf/10.1007%2F978-94-017-0922-4_10.pdf","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":null,"sustainable_development_goals":[{"score":0.7142999768257141,"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W58430248","https://openalex.org/W287237619","https://openalex.org/W1497786184","https://openalex.org/W2492762618"],"related_works":["https://openalex.org/W6987026705","https://openalex.org/W2022508981","https://openalex.org/W2078026744","https://openalex.org/W3006119985","https://openalex.org/W4225398734","https://openalex.org/W2281142336","https://openalex.org/W2477638344","https://openalex.org/W4377108070","https://openalex.org/W1887722910","https://openalex.org/W2750467640"],"abstract_inverted_index":{"In":[0],"1997,":[1],"in":[2,20],"50":[3],"surveys":[4],"of":[5,15,24,36,57,64,88,111],"irrigated":[6],"rice":[7,94,113,121],"fields":[8,95],"(0":[9],"ryza":[10],"sativa":[11],"L.),":[12],"47":[13],"species":[14,26,35,84],"vascular":[16],"plants":[17],"were":[18,38,78],"recorded":[19],"19":[21],"families.":[22,33],"Most":[23],"the":[25,29,65,74,85,108],"belonged":[27],"to":[28,120],"Gramineae":[30],"and":[31,44,50,59,92,104,107],"Cyperaceae":[32],"Seven":[34],"algae":[37],"found,":[39],"mostly":[40],"Hydrodictyon":[41],"reticulatum":[42],"(42%)":[43],"Chara":[45],"vulgaris":[46],"(38%).":[47],"Echinochloa":[48],"crus-galli":[49],"Paspalum":[51],"paspalodes":[52],"showed":[53],"a":[54,117],"relative":[55],"frequency":[56],"98%":[58],"82%,":[60],"respectively.":[61],"An":[62],"interpretation":[63],"major":[66],"factors":[67],"is":[68],"presented":[69],"influencing":[70],"weed":[71],"distribution.":[72],"Amongst":[73],"weeds":[75],"recorded,":[76],"13":[77],"alien":[79,83],"species.":[80],"For":[81],"these":[82],"probable":[86],"date":[87],"introduction":[89],"into":[90,93],"Portugal":[91],"was":[96],"determined.":[97],"The":[98],"recently":[99],"introduced":[100],"neophytes":[101],"Heteranthera":[102,105],"limosa":[103],"reniformis":[106],"increasing":[109],"presence":[110],"red":[112],"(Oryza":[114],"sativa),":[115],"represent":[116],"potential":[118],"danger":[119],"culture.":[122]},"counts_by_year":[],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2016-06-24T00:00:00"}