{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/90597"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/90597","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The use of right of ways by primary burrowing crayfishes in the Ouachita Mountains Ecoregion of Arkansas","abstract":"Roadside ditches can harbor beneficial and detrimental attributes for animal persistence. I sought to determine if roadside ditches could be preferred by two narrowly endemic primary burrowing crayfish species, Fallicambarus harpi and Procambarus reimeri. To investigate this interaction, I collected habitat data, locality information, and tested computer generated habitat models for these two species in the Ouachita Mountains Ecoregion (OME) of western Arkansas in the spring of 2014 and 2015. My first objective was to determine the fine-scale habitat preferences of F. harpi and P. reimeri in relation to their occurrence in roadside ditches. My analysis revealed these species to be habitat specialists, preferring open habitat with a low-herbaceous, wet microhabitat; similar to habitat found in roadside ditches. My second objective was to determine the ability of habitat models to accurately predict the occurrence of these two crayfishes across the OME. To investigate this objective, I used the locality data gained in the first field season to construct species distribution models using the program Maxent. I then used the species distribution model as a guide to sample for both crayfish species across the OME. My analysis revealed that species distribution models, specifically Maxent, are a suitable tool for analyzing and discovering new populations of both F. harpi and P. reimeri. My concentrated search efforts resulted in a documented range expansion of both species in the OME. My third objective was to assess the conservation status of both F. harpi and P. reimeri. Using the locality data that I collected over the two years of study (2014 and 2015), I was able to determine F. harpi and P. reimeri are constrained geographically but relatively stable throughout their range. I discovered new populations of both species, moderately expanding the range of F. harpi (<100 km2) and P. reimeri by a larger distance (>1000 km2). I conclude that the microhabitat of roadside ditches can be beneficial to the persistence of these two narrowly endemic habitat specialists in the Ouachita Mountains Ecoregion in Arkansas.","abstract_html":"Roadside ditches can harbor beneficial and detrimental attributes for animal persistence. I sought to determine if roadside ditches could be preferred by two narrowly endemic primary burrowing crayfish species, Fallicambarus harpi and Procambarus reimeri. To investigate this interaction, I collected habitat data, locality information, and tested computer generated habitat models for these two species in the Ouachita Mountains Ecoregion (OME) of western Arkansas in the spring of 2014 and 2015. My first objective was to determine the fine-scale habitat preferences of F. harpi and P. reimeri in relation to their occurrence in roadside ditches. My analysis revealed these species to be habitat specialists, preferring open habitat with a low-herbaceous, wet microhabitat; similar to habitat found in roadside ditches. My second objective was to determine the ability of habitat models to accurately predict the occurrence of these two crayfishes across the OME. To investigate this objective, I used the locality data gained in the first field season to construct species distribution models using the program Maxent. I then used the species distribution model as a guide to sample for both crayfish species across the OME. My analysis revealed that species distribution models, specifically Maxent, are a suitable tool for analyzing and discovering new populations of both F. harpi and P. reimeri. My concentrated search efforts resulted in a documented range expansion of both species in the OME. My third objective was to assess the conservation status of both F. harpi and P. reimeri. Using the locality data that I collected over the two years of study (2014 and 2015), I was able to determine F. harpi and P. reimeri are constrained geographically but relatively stable throughout their range. I discovered new populations of both species, moderately expanding the range of F. harpi (&lt;100 km2) and P. reimeri by a larger distance (&gt;1000 km2). I conclude that the microhabitat of roadside ditches can be beneficial to the persistence of these two narrowly endemic habitat specialists in the Ouachita Mountains Ecoregion in Arkansas.","abstract_has_math":false,"creators":["Rhoden, Cody Martin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Natural Res & Env Sciences","degree_department":null,"school":null,"contributors":["Taylor, Christopher A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-07-07T19:54:27Z","date_published":"2016-07-07T19:54:27Z","updated_at":"2026-07-22T22:26:34Z","subjects":["primary burrowing crayfish","Arkansas","Ouachita Mountains","Maxent","Generalized linear mixed model (GLMM)","Fallicambarus harpi","Procambarus reimeri"],"languages":["en"],"rights":["Copyright 2016 Cody Rhoden"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/90597","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Taylor, Christopher A."]},{"key":"dc:creator","label":"Author","values":["Rhoden, Cody Martin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016-07-07T19:54:27Z","2016-04-21","2016-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Res & Env Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["primary burrowing crayfish","Arkansas","Ouachita Mountains","Maxent","Generalized linear mixed model (GLMM)","Fallicambarus harpi","Procambarus reimeri"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2016 Cody Rhoden"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/90597"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Roadside ditches can harbor beneficial and detrimental attributes for animal persistence. I sought to determine if roadside ditches could be preferred by two narrowly endemic primary burrowing crayfish species, Fallicambarus harpi and Procambarus reimeri. To investigate this interaction, I collected habitat data, locality information, and tested computer generated habitat models for these two species in the Ouachita Mountains Ecoregion (OME) of western Arkansas in the spring of 2014 and 2015. My first objective was to determine the fine-scale habitat preferences of F. harpi and P. reimeri in relation to their occurrence in roadside ditches. My analysis revealed these species to be habitat specialists, preferring open habitat with a low-herbaceous, wet microhabitat; similar to habitat found in roadside ditches. My second objective was to determine the ability of habitat models to accurately predict the occurrence of these two crayfishes across the OME. To investigate this objective, I used the locality data gained in the first field season to construct species distribution models using the program Maxent. I then used the species distribution model as a guide to sample for both crayfish species across the OME. My analysis revealed that species distribution models, specifically Maxent, are a suitable tool for analyzing and discovering new populations of both F. harpi and P. reimeri. My concentrated search efforts resulted in a documented range expansion of both species in the OME. My third objective was to assess the conservation status of both F. harpi and P. reimeri. Using the locality data that I collected over the two years of study (2014 and 2015), I was able to determine F. harpi and P. reimeri are constrained geographically but relatively stable throughout their range. I discovered new populations of both species, moderately expanding the range of F. harpi (<100 km2) and P. reimeri by a larger distance (>1000 km2). I conclude that the microhabitat of roadside ditches can be beneficial to the persistence of these two narrowly endemic habitat specialists in the Ouachita Mountains Ecoregion in Arkansas.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms","The student, Cody Rhoden, accepted the attached license on 2016-04-20 at 15:31.","The student, Cody Rhoden, submitted this Thesis for approval on 2016-04-20 at 15:33.","This Thesis was approved for publication on 2016-04-21 at 10:19.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9384 on 2016-07-07 at 13:31:57","Made available in DSpace on 2016-07-07T19:54:27Z (GMT). No. of bitstreams: 2 RHODEN-THESIS-2016.pdf: 5352312 bytes, checksum: 98b4ca6d18ac7b85ac63b214986987a2 (MD5) LICENSE.txt: 4208 bytes, checksum: e7965644f3c8d4d7483bdd12b99989f5 (MD5) Previous issue date: 2016-04-21"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["The use of right of ways by primary burrowing crayfishes in the Ouachita Mountains Ecoregion of Arkansas"]}]}],"canonical_facts":{"dc:contributor":["Taylor, Christopher A."],"dc:creator":["Rhoden, Cody Martin"],"dc:date":["2016-07-07T19:54:27Z","2016-04-21","2016-05"],"dc:description":["Roadside ditches can harbor beneficial and detrimental attributes for animal persistence. I sought to determine if roadside ditches could be preferred by two narrowly endemic primary burrowing crayfish species, Fallicambarus harpi and Procambarus reimeri. To investigate this interaction, I collected habitat data, locality information, and tested computer generated habitat models for these two species in the Ouachita Mountains Ecoregion (OME) of western Arkansas in the spring of 2014 and 2015. My first objective was to determine the fine-scale habitat preferences of F. harpi and P. reimeri in relation to their occurrence in roadside ditches. My analysis revealed these species to be habitat specialists, preferring open habitat with a low-herbaceous, wet microhabitat; similar to habitat found in roadside ditches. My second objective was to determine the ability of habitat models to accurately predict the occurrence of these two crayfishes across the OME. To investigate this objective, I used the locality data gained in the first field season to construct species distribution models using the program Maxent. I then used the species distribution model as a guide to sample for both crayfish species across the OME. My analysis revealed that species distribution models, specifically Maxent, are a suitable tool for analyzing and discovering new populations of both F. harpi and P. reimeri. My concentrated search efforts resulted in a documented range expansion of both species in the OME. My third objective was to assess the conservation status of both F. harpi and P. reimeri. Using the locality data that I collected over the two years of study (2014 and 2015), I was able to determine F. harpi and P. reimeri are constrained geographically but relatively stable throughout their range. I discovered new populations of both species, moderately expanding the range of F. harpi (<100 km2) and P. reimeri by a larger distance (>1000 km2). I conclude that the microhabitat of roadside ditches can be beneficial to the persistence of these two narrowly endemic habitat specialists in the Ouachita Mountains Ecoregion in Arkansas.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms","The student, Cody Rhoden, accepted the attached license on 2016-04-20 at 15:31.","The student, Cody Rhoden, submitted this Thesis for approval on 2016-04-20 at 15:33.","This Thesis was approved for publication on 2016-04-21 at 10:19.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9384 on 2016-07-07 at 13:31:57","Made available in DSpace on 2016-07-07T19:54:27Z (GMT). No. of bitstreams: 2 RHODEN-THESIS-2016.pdf: 5352312 bytes, checksum: 98b4ca6d18ac7b85ac63b214986987a2 (MD5) LICENSE.txt: 4208 bytes, checksum: e7965644f3c8d4d7483bdd12b99989f5 (MD5) Previous issue date: 2016-04-21"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/90597"],"dc:language":["en"],"dc:rights":["Copyright 2016 Cody Rhoden"],"dc:subject":["primary burrowing crayfish","Arkansas","Ouachita Mountains","Maxent","Generalized linear mixed model (GLMM)","Fallicambarus harpi","Procambarus reimeri"],"dc:title":["The use of right of ways by primary burrowing crayfishes in the Ouachita Mountains Ecoregion of Arkansas"],"dc:type":["text"],"thesis:degree_discipline":["Natural Res & Env Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:34Z"}