{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/98409"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/98409","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Nearshore zooplankton communities of Lake Michigan and implications for invasibility by Asian carp","abstract":"Recent, dramatic shifts have occurred within zooplankton community structure in Lake Michigan. Such changes could alter the ability of invasive species, such as Asian carp, to establish self-sustaining populations. Without knowledge of spatial characteristics of zooplankton communities, it is difficult to assess the potential for Asian carp establishment. We sought to better describe spatial heterogeneity of zooplankton community structure by surveying both large and small-bodied zooplankton at 25 nearshore embayment and open water locations around the lake for two years. With this geographically diverse dataset, we explored variation in zooplankton community structure and attempted to predict bighead and silver carp growth across large spatial scales. Our results indicate decreased total zooplankton biomass in nearshore open-water locations relative to embayments. Higher relative biomass of larger-bodied zooplankton was linked to embayments with higher primary production such as Green Bay and Michigan drowned river mouth lakes, while smaller-bodied zooplankton constituted the majority of biomass in open water and harbor locations with lower primary production. These biomass estimates, in turn, affected predicted Asian carp growth rates. Negative growth was predicted across most locations, with the exception of several drowned river mouth lakes along the Michigan coast and regions of Green Bay, Wisconsin. We suggest that recent declines in primary production related to establishment of quagga mussels throughout the basin and decreased nutrient loading in addition to increased prevalence of predatory zooplankton has led to a decrease in zooplankton biomass, shifted structure towards dominance by smaller-bodied taxa, and created a less hospitable environment for Asian carp survival through most nearshore regions of the lake.","abstract_html":"Recent, dramatic shifts have occurred within zooplankton community structure in Lake Michigan. Such changes could alter the ability of invasive species, such as Asian carp, to establish self-sustaining populations. Without knowledge of spatial characteristics of zooplankton communities, it is difficult to assess the potential for Asian carp establishment. We sought to better describe spatial heterogeneity of zooplankton community structure by surveying both large and small-bodied zooplankton at 25 nearshore embayment and open water locations around the lake for two years. With this geographically diverse dataset, we explored variation in zooplankton community structure and attempted to predict bighead and silver carp growth across large spatial scales. Our results indicate decreased total zooplankton biomass in nearshore open-water locations relative to embayments. Higher relative biomass of larger-bodied zooplankton was linked to embayments with higher primary production such as Green Bay and Michigan drowned river mouth lakes, while smaller-bodied zooplankton constituted the majority of biomass in open water and harbor locations with lower primary production. These biomass estimates, in turn, affected predicted Asian carp growth rates. Negative growth was predicted across most locations, with the exception of several drowned river mouth lakes along the Michigan coast and regions of Green Bay, Wisconsin. We suggest that recent declines in primary production related to establishment of quagga mussels throughout the basin and decreased nutrient loading in addition to increased prevalence of predatory zooplankton has led to a decrease in zooplankton biomass, shifted structure towards dominance by smaller-bodied taxa, and created a less hospitable environment for Asian carp survival through most nearshore regions of the lake.","abstract_has_math":false,"creators":["Reed, Emily M"],"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":["Czesny, Sergiusz J.","Chick, John H.","Larson, Eric R"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-09-29T17:56:59Z","date_published":"2017-09-29T17:56:59Z","updated_at":"2026-07-22T22:24:35Z","subjects":["Lake Michigan","Zooplankton","Community structure","Bioenergetics","Risk assessment","Bighead carp","Silver carp"],"languages":["en"],"rights":["Copyright 2017 Emily Reed"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/98409","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Czesny, Sergiusz J.","Chick, John H.","Larson, Eric R"]},{"key":"dc:creator","label":"Author","values":["Reed, Emily M"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-09-29T17:56:59Z","2017-07-17","2017-08"]},{"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":["Lake Michigan","Zooplankton","Community structure","Bioenergetics","Risk assessment","Bighead carp","Silver carp"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Emily Reed"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/98409"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Recent, dramatic shifts have occurred within zooplankton community structure in Lake Michigan. Such changes could alter the ability of invasive species, such as Asian carp, to establish self-sustaining populations. Without knowledge of spatial characteristics of zooplankton communities, it is difficult to assess the potential for Asian carp establishment. We sought to better describe spatial heterogeneity of zooplankton community structure by surveying both large and small-bodied zooplankton at 25 nearshore embayment and open water locations around the lake for two years. With this geographically diverse dataset, we explored variation in zooplankton community structure and attempted to predict bighead and silver carp growth across large spatial scales. Our results indicate decreased total zooplankton biomass in nearshore open-water locations relative to embayments. Higher relative biomass of larger-bodied zooplankton was linked to embayments with higher primary production such as Green Bay and Michigan drowned river mouth lakes, while smaller-bodied zooplankton constituted the majority of biomass in open water and harbor locations with lower primary production. These biomass estimates, in turn, affected predicted Asian carp growth rates. Negative growth was predicted across most locations, with the exception of several drowned river mouth lakes along the Michigan coast and regions of Green Bay, Wisconsin. We suggest that recent declines in primary production related to establishment of quagga mussels throughout the basin and decreased nutrient loading in addition to increased prevalence of predatory zooplankton has led to a decrease in zooplankton biomass, shifted structure towards dominance by smaller-bodied taxa, and created a less hospitable environment for Asian carp survival through most nearshore regions of the lake.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2017-09-29 without embargo terms","The student, Emily Reed, accepted the attached license on 2017-07-17 at 11:07.","The student, Emily Reed, submitted this Thesis for approval on 2017-07-17 at 11:12.","This Thesis was approved for publication on 2017-07-17 at 16:03.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11488 on 2017-09-29 at 11:31:00","Made available in DSpace on 2017-09-29T17:56:59Z (GMT). No. of bitstreams: 2 REED-THESIS-2017.pdf: 2153564 bytes, checksum: 38e12e20f4ff15c091ae48d9d95a4b77 (MD5) LICENSE.txt: 4207 bytes, checksum: e1a25884e8f68e4b4d2c6085917519e5 (MD5) Previous issue date: 2017-07-17"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Nearshore zooplankton communities of Lake Michigan and implications for invasibility by Asian carp"]}]}],"canonical_facts":{"dc:contributor":["Czesny, Sergiusz J.","Chick, John H.","Larson, Eric R"],"dc:creator":["Reed, Emily M"],"dc:date":["2017-09-29T17:56:59Z","2017-07-17","2017-08"],"dc:description":["Recent, dramatic shifts have occurred within zooplankton community structure in Lake Michigan. Such changes could alter the ability of invasive species, such as Asian carp, to establish self-sustaining populations. Without knowledge of spatial characteristics of zooplankton communities, it is difficult to assess the potential for Asian carp establishment. We sought to better describe spatial heterogeneity of zooplankton community structure by surveying both large and small-bodied zooplankton at 25 nearshore embayment and open water locations around the lake for two years. With this geographically diverse dataset, we explored variation in zooplankton community structure and attempted to predict bighead and silver carp growth across large spatial scales. Our results indicate decreased total zooplankton biomass in nearshore open-water locations relative to embayments. Higher relative biomass of larger-bodied zooplankton was linked to embayments with higher primary production such as Green Bay and Michigan drowned river mouth lakes, while smaller-bodied zooplankton constituted the majority of biomass in open water and harbor locations with lower primary production. These biomass estimates, in turn, affected predicted Asian carp growth rates. Negative growth was predicted across most locations, with the exception of several drowned river mouth lakes along the Michigan coast and regions of Green Bay, Wisconsin. We suggest that recent declines in primary production related to establishment of quagga mussels throughout the basin and decreased nutrient loading in addition to increased prevalence of predatory zooplankton has led to a decrease in zooplankton biomass, shifted structure towards dominance by smaller-bodied taxa, and created a less hospitable environment for Asian carp survival through most nearshore regions of the lake.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2017-09-29 without embargo terms","The student, Emily Reed, accepted the attached license on 2017-07-17 at 11:07.","The student, Emily Reed, submitted this Thesis for approval on 2017-07-17 at 11:12.","This Thesis was approved for publication on 2017-07-17 at 16:03.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11488 on 2017-09-29 at 11:31:00","Made available in DSpace on 2017-09-29T17:56:59Z (GMT). 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