{"id":{"repo_id":"vcu","oai_identifier":"oai:scholarscompass.vcu.edu:etd-1078"},"canonical_url":"https://search.dev.ndltd.org/etd/vcu/oai:scholarscompass.vcu.edu:etd-1078","repository":{"repo_id":"vcu","name":"Virginia Commonwealth University","base_url":"https://scholarscompass.vcu.edu/do/oai/"},"display":{"title":"Spatial and temporal distribution of larval fishes in a large tidal river.","abstract":"There are few published studies of larval fish assemblages from unregulated, tidal freshwater rivers. Patterns in the spatial and temporal distribution of larval fishes in the Mattaponi River were examined. Sampling took place on a weekly basis from February through August, 2006 and 2007. Larval fishes were categorized by taxa, reproductive guild, and residency guild. Group comparisons using multi-response permutation procedures (MRPP) indicated significant spatial and temporal differences in assemblage composition on multiple scales. Differences in assemblage composition were analyzed using non-metric multidimensional scaling (NMS). Interannual differences were attributable to anadromous and semi-migratory species. Seasonal differences were attributable to herrings, perches, and minnows. Both interannual and seasonal differences in assemblage composition may have been a result of changes in discharge. Spatial (i.e. longitudinal) variation of the larval fish assemblage differed by tidal regime. NMS and MRPP identified a distinct tidal freshwater larval fish assemblage. Tidal freshwater habitats may act as ecotones between marine and riverine ecosystems.","abstract_html":"There are few published studies of larval fish assemblages from unregulated, tidal freshwater rivers. Patterns in the spatial and temporal distribution of larval fishes in the Mattaponi River were examined. Sampling took place on a weekly basis from February through August, 2006 and 2007. Larval fishes were categorized by taxa, reproductive guild, and residency guild. Group comparisons using multi-response permutation procedures (MRPP) indicated significant spatial and temporal differences in assemblage composition on multiple scales. Differences in assemblage composition were analyzed using non-metric multidimensional scaling (NMS). Interannual differences were attributable to anadromous and semi-migratory species. Seasonal differences were attributable to herrings, perches, and minnows. Both interannual and seasonal differences in assemblage composition may have been a result of changes in discharge. Spatial (i.e. longitudinal) variation of the larval fish assemblage differed by tidal regime. NMS and MRPP identified a distinct tidal freshwater larval fish assemblage. Tidal freshwater habitats may act as ecotones between marine and riverine ecosystems.","abstract_has_math":false,"creators":["Seelig, Harold"],"institution":null,"degree_name":"Master of Science","degree_level":"Thesis","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Greg Garman"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-04-30T07:00:00Z","date_published":"2010-04-30T07:00:00Z","updated_at":"2026-07-24T05:53:18Z","subjects":["Biology","Life Sciences"],"languages":[],"rights":["© The Author"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarscompass.vcu.edu/etd/79"],"render_values":[{"text":"https://scholarscompass.vcu.edu/etd/79","href":"https://scholarscompass.vcu.edu/etd/79","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.25772/SMDW-GZ51","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Greg Garman"]},{"key":"dc:creator","label":"Author","values":["Seelig, Harold"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2015-05-14T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology","Life Sciences"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© The Author"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://doi.org/10.25772/SMDW-GZ51","https://scholarscompass.vcu.edu/etd/79"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["There are few published studies of larval fish assemblages from unregulated, tidal freshwater rivers. Patterns in the spatial and temporal distribution of larval fishes in the Mattaponi River were examined. Sampling took place on a weekly basis from February through August, 2006 and 2007. Larval fishes were categorized by taxa, reproductive guild, and residency guild. Group comparisons using multi-response permutation procedures (MRPP) indicated significant spatial and temporal differences in assemblage composition on multiple scales. Differences in assemblage composition were analyzed using non-metric multidimensional scaling (NMS). Interannual differences were attributable to anadromous and semi-migratory species. Seasonal differences were attributable to herrings, perches, and minnows. Both interannual and seasonal differences in assemblage composition may have been a result of changes in discharge. Spatial (i.e. longitudinal) variation of the larval fish assemblage differed by tidal regime. NMS and MRPP identified a distinct tidal freshwater larval fish assemblage. Tidal freshwater habitats may act as ecotones between marine and riverine ecosystems."]},{"key":"dc:title","label":"Title","values":["Spatial and temporal distribution of larval fishes in a large tidal river."]}]}],"canonical_facts":{"dc:contributor":["Greg Garman"],"dc:creator":["Seelig, Harold"],"dc:date.available":["2015-05-14T07:00:00Z"],"dc:description.abstract":["There are few published studies of larval fish assemblages from unregulated, tidal freshwater rivers. Patterns in the spatial and temporal distribution of larval fishes in the Mattaponi River were examined. Sampling took place on a weekly basis from February through August, 2006 and 2007. Larval fishes were categorized by taxa, reproductive guild, and residency guild. Group comparisons using multi-response permutation procedures (MRPP) indicated significant spatial and temporal differences in assemblage composition on multiple scales. Differences in assemblage composition were analyzed using non-metric multidimensional scaling (NMS). Interannual differences were attributable to anadromous and semi-migratory species. Seasonal differences were attributable to herrings, perches, and minnows. Both interannual and seasonal differences in assemblage composition may have been a result of changes in discharge. Spatial (i.e. longitudinal) variation of the larval fish assemblage differed by tidal regime. NMS and MRPP identified a distinct tidal freshwater larval fish assemblage. Tidal freshwater habitats may act as ecotones between marine and riverine ecosystems."],"dc:identifier":["https://doi.org/10.25772/SMDW-GZ51","https://scholarscompass.vcu.edu/etd/79"],"dc:rights":["© The Author"],"dc:subject":["Biology","Life Sciences"],"dc:title":["Spatial and temporal distribution of larval fishes in a large tidal river."],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science"]},"updated_at":"2026-07-24T05:53:18Z"}