{"id":"https://openalex.org/W2044685607","doi":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","title":"Comparison of crown cover estimates for woody vegetation in arid rangelands","display_name":"Comparison of crown cover estimates for woody vegetation in arid rangelands","publication_year":1988,"publication_date":"1988-12-01","ids":{"openalex":"https://openalex.org/W2044685607","doi":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","mag":"2044685607"},"language":"en","primary_location":{"id":"doi:10.1111/j.1442-9993.1988.tb00994.x","doi":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","pdf_url":null,"source":{"id":"https://openalex.org/S4210240342","display_name":"Australian Journal of Ecology","issn_l":"0307-692X","issn":["0307-692X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Australian Journal of Ecology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"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/A5076307243","display_name":"Margaret H. Friedel","orcid":"https://orcid.org/0000-0002-8350-636X","observed_orcids":["https://orcid.org/0000-0002-8350-636X"]},"institutions":[{"id":"https://openalex.org/I1292875679","display_name":"Commonwealth Scientific and Industrial Research Organisation","ror":"https://ror.org/03qn8fb07","country_code":"AU","type":"government","lineage":["https://openalex.org/I1292875679","https://openalex.org/I2801453606","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"M. H. FRIEDEL","raw_affiliation_strings":["CSIRO Division of Wildlife and Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","CSIRO Division of Wildlife & Ecology, PO Box 2111, Alice Springs, NT 0871, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CSIRO Division of Wildlife and Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","institution_ids":["https://openalex.org/I1292875679"]},{"raw_affiliation_string":"CSIRO Division of Wildlife & Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","institution_ids":["https://openalex.org/I1292875679"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111871909","display_name":"V. H. Chewings","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1292875679","display_name":"Commonwealth Scientific and Industrial Research Organisation","ror":"https://ror.org/03qn8fb07","country_code":"AU","type":"government","lineage":["https://openalex.org/I1292875679","https://openalex.org/I2801453606","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"V. H. CHEWINGS","raw_affiliation_strings":["CSIRO Division of Wildlife and Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","CSIRO Division of Wildlife & Ecology, PO Box 2111, Alice Springs, NT 0871, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CSIRO Division of Wildlife and Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","institution_ids":["https://openalex.org/I1292875679"]},{"raw_affiliation_string":"CSIRO Division of Wildlife & Ecology, PO Box 2111, Alice Springs, NT 0871, Australia","institution_ids":["https://openalex.org/I1292875679"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I1292875679"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":26,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"13","issue":"4","first_page":"463","last_page":"468"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11880","display_name":"Forest ecology and management","score":0.39820000529289246,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"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/T11880","display_name":"Forest ecology and management","score":0.39820000529289246,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"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/T13388","display_name":"Rangeland and Wildlife Management","score":0.3075999915599823,"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/T10005","display_name":"Ecology and Vegetation Dynamics Studies","score":0.1662999987602234,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/woody-vegetation","display_name":"woody vegetation","score":0.9789999723434448},{"id":"https://openalex.org/keywords/arid-rangelands","display_name":"arid rangelands","score":0.9940000176429749},{"id":"https://openalex.org/keywords/line-intercept-sampling","display_name":"line intercept sampling","score":0.890999972820282},{"id":"https://openalex.org/keywords/point-sampling","display_name":"point sampling","score":0.9350000023841858},{"id":"https://openalex.org/keywords/plant-size","display_name":"plant size","score":0.6069999933242798},{"id":"https://openalex.org/keywords/plant-aggregation","display_name":"plant aggregation","score":0.9190000295639038},{"id":"https://openalex.org/keywords/sampling-variability","display_name":"sampling variability","score":0.4230000078678131},{"id":"https://openalex.org/keywords/rangeland-monitoring","display_name":"rangeland monitoring","score":0.6510000228881836}],"concepts":[{"id":"https://openalex.org/C2778400979","wikidata":"https://www.wikidata.org/wiki/Q143720","display_name":"Crown (dentistry)","level":2,"score":0.7019096612930298},{"id":"https://openalex.org/C150772632","wikidata":"https://www.wikidata.org/wiki/Q1330709","display_name":"Arid","level":2,"score":0.6455599665641785},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.6119725108146667},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.6070541143417358},{"id":"https://openalex.org/C130989795","wikidata":"https://www.wikidata.org/wiki/Q3364870","display_name":"Rangeland","level":2,"score":0.5948503017425537},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.47293806076049805},{"id":"https://openalex.org/C167651023","wikidata":"https://www.wikidata.org/wiki/Q1474611","display_name":"Plot (graphics)","level":2,"score":0.4668116569519043},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.43662065267562866},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.43357905745506287},{"id":"https://openalex.org/C2780428219","wikidata":"https://www.wikidata.org/wiki/Q16952335","display_name":"Cover (algebra)","level":2,"score":0.4163115322589874},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3914761543273926},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.3560802936553955},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.32084810733795166},{"id":"https://openalex.org/C54286561","wikidata":"https://www.wikidata.org/wiki/Q397350","display_name":"Agroforestry","level":1,"score":0.18170490860939026},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.16885748505592346},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.14208871126174927},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09895426034927368},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.0},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","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/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1111/j.1442-9993.1988.tb00994.x","doi":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","is_oa":false,"landing_page_url":"https://doi.org/10.1111/j.1442-9993.1988.tb00994.x","pdf_url":null,"source":{"id":"https://openalex.org/S4210240342","display_name":"Australian Journal of Ecology","issn_l":"0307-692X","issn":["0307-692X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Australian Journal of Ecology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":1.0,"display_name":"Life on land"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W7485448","https://openalex.org/W174794665","https://openalex.org/W1544206333","https://openalex.org/W1637858510","https://openalex.org/W2033634671","https://openalex.org/W2072931520","https://openalex.org/W2166355329","https://openalex.org/W2336586726","https://openalex.org/W2410246834","https://openalex.org/W2461958526","https://openalex.org/W2494084875","https://openalex.org/W2516857391","https://openalex.org/W2594422466","https://openalex.org/W4285719527","https://openalex.org/W4404730787"],"related_works":["https://openalex.org/W2325729642","https://openalex.org/W2547104302","https://openalex.org/W2180945554","https://openalex.org/W341547218","https://openalex.org/W1999682510","https://openalex.org/W7485448","https://openalex.org/W1975816832","https://openalex.org/W2336586726","https://openalex.org/W2104327043","https://openalex.org/W1981925508"],"abstract_inverted_index":{"Abstract":[0],"Three":[1],"methods":[2,39],"for":[3,177,212],"estimating":[4],"crown":[5,64,87],"cover":[6,65,88],"of":[7,21,31,37,46,66,89,93,161,186,199],"woody":[8,213],"vegetation":[9,214],"were":[10,126,129,145,156],"compared,":[11],"in":[12,48,197,215],"three":[13],"mapped":[14],"field":[15],"sites":[16],"and":[17,55,71,91,117,174,201,204],"one":[18,114],"theoretical":[19,50],"map":[20],"randomly":[22],"distributed":[23],"individuals,":[24,90],"by":[25,42,158,168],"computer":[26],"simulated":[27],"sampling.":[28],"The":[29,77,141,164,184],"effect":[30],"plant":[32,136,162,182],"size":[33,45],"on":[34],"the":[35,38,44,49,53,62,85,159,178,187,192],"performance":[36],"was":[40],"investigated":[41],"varying":[43],"individuals":[47,110],"map.":[51],"Using":[52],"line\u2010intercept":[54],"point\u2010sampling":[56,118],"techniques":[57,119],"according":[58],"to":[59,132],"standard":[60],"procedures,":[61],"net":[63],"a":[67,170,175,209],"species":[68],"is":[69,166,206],"estimated":[70],"overlapping":[72],"areas":[73,92],"are":[74,95,195],"not":[75,130],"recognized.":[76],"variable":[78,122,148,188],"plot":[79,189],"or":[80,112],"Bitterlich":[81,102,142],"gauge":[82,103,143,179],"technique":[83,211],"estimates":[84,104,123,144],"total":[86],"overlap":[94],"thus":[96],"recorded":[97],"more":[98,147],"than":[99,151],"once.":[100],"Consequently,":[101],"will":[105],"always":[106],"be":[107],"greater":[108,133],"whenever":[109],"intermingle":[111],"overtop":[113],"another.":[115],"Line\u2010intercept":[116],"produced":[120],"highly":[121],"when":[124,135],"plants":[125],"small,":[127],"but":[128,155],"prone":[131],"variability":[134],"distribution":[137],"departed":[138],"from":[139],"randomness.":[140],"no":[146],"with":[149,152],"small":[150],"large":[153],"plants,":[154],"affected":[157],"degree":[160],"aggregation.":[163],"problem":[165],"overcome":[167],"selecting":[169],"sample":[171],"point":[172],"spacing":[173],"half\u2010angle":[176],"that":[180],"optimizes":[181],"counting.":[183],"advantages":[185],"method":[190],"over":[191],"other":[193],"two":[194],"discussed":[196],"terms":[198],"speed":[200],"operator":[202],"differences,":[203],"it":[205],"recommended":[207],"as":[208],"monitoring":[210],"arid":[216],"rangelands.":[217]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
