| Abstract | Invasive bivalves continue to spread and negatively impact freshwater ecosystems worldwide. As different metrics for body size and biomass are frequently used within the literature to standardise bivalve-related ecological impacts (e.g. respiration and filtration rates), the lack of broadly applicable conversion equations currently hinders reliable comparison across bivalve populations. To facilitate improved comparative assessment among studies originating from disparate geographical locations, we report body size and biomass conversion equations for six invasive freshwater bivalves (or species complex members) worldwide: Corbicula fluminea, C. largillierti, Dreissena bugensis, D. polymorpha, Limnoperna fortunei and Sinanodonta woodiana, and tested the reliability (i.e. precision and accuracy) of these equations. Body size (length, width and height) and biomass metrics of living-weight (LW), wet-weight (WW), dry-weight (DW), dry shell-weight (SW), shell free dry-weight (SFDW) and ash-free dry-weight (AFDW) were collected from a total of 44 bivalve populations located in Asia, the Americas and Europe. Relationships between body size and individual biomass metrics, as well as proportional weight-to-weight conversion factors, were determined. For most species, although inherent variation existed between sampled populations, body size directional measurements were found to be good predictors of all biomass metrics (e.g. length to LW, WW, SW or DW: R = 0.82-0.96), with moderate to high accuracy for mean absolute error (MAE): ±9.14%-24.19%. Similarly, narrow 95% confidence limits and low MAE were observed for most proportional biomass relationships, indicating high reliability for the calculated conversion factors (e.g. LW to AFDW; CI range: 0.7-2.0, MAE: ±0.7%-2.0%). Synthesis and applications. Our derived biomass prediction equations can be used to rapidly estimate the biologically active biomass of the assessed species, based on simpler biomass or body size measurements for a wide range of situations globally. This allows for the calculation of approximate average indicators that, when combined with density data, can be used to estimate biomass per geographical unit-area and contribute to quantification of population-level effects. These general equations will support meta-analyses, and allow for comparative assessment of historic and contemporary data. Overall, these equations will enable conservation managers to better understand and predict ecological impacts of these bivalves. |
| Text | 465165 2021 10.1111/1365 2664.13941 Scopus 2 s2.0 85109383839 Allometric relationships Corbicula Dreissena Limnoperna Sinanodonta biomass and body size measurements weight conversion equations Biometric conversion factors as a unifying platform for comparative assessment of invasive freshwater bivalves Coughlan N.E.; Cunningham E.M.; Cuthbert R.N.; Joyce P.W.S.; Anastacio P.; Banha F.; Bonel N.; Bradbeer S.J.; Briski E.; Butitta V.L.; Cadkova Z.; Dick J.T.A.; Douda K.; Eagling L.E.; Ferreira Rodriguez N.; Hunicken L.A.; Johansson M.L.; Kregting L.; Labecka A.M.; Li D.; Liquin F.; Marescaux J.; Morris T.J.; Nowakowska P.; Ozgo M.; Paolucci E.M.; Peribanez M.A.; Riccardi N.; Smith E.R.C.; Spear M.J.; Steffen G.T.; Tiemann J.S.; Urbanska M.; Van Doninck K.; Vastrade M.; Vong G.Y.W.; Wawrzyniak Wydrowska B.; Xia Z.; Zeng C.; Zhan A.; Sylvester F. School of Biological, Earth Environmental Sciences, University College Cork, Cork, Ireland; School of Biological Sciences, Queen s University Belfast, Belfast, UK, United Kingdom; Queen s Marine Laboratory, Queen s University Belfast, Portaferry, UK, United Kingdom; GEOMAR Helmholtz Zentrum fur Ozeanforschung Kiel, Kiel, Germany; MARE Marine and Environmental Sciences Centre, Departamento de Paisagem, Ambiente e Ordenamento. Universidade de Évora, Évora, Portugal; Centro de Recursos Naturales Renovables de la Zona Semiarida CERZOS CCT CONICET Bahia Blanca , Bahia Blanca, Argentina; Centre d Ecologie Fonctionnelle et Evolutive, UMR 5175, CNRS Universite de Montpellier, Universite Paul Valery Montpellier Ecole Pratique des Hautes Etudes IRD, Montpellier, France; School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK, United Kingdom; Center for Limnology, University of Wisconsin Madison, Madison, WI, USA, United States; Department of Zoology and Fisheries, Czech University of Life Sciences Prague, Prague, Czech Republic; Departamento de Ecoloxia e Bioloxia Animal, Facultade de Bioloxia, Universidade de Vigo, Vigo, Spain; Museo Argentino de Ciencias Naturales Bernardino Rivadavia , Buenos Aires, Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas CONICET , Buenos Aires, Argentina; Department of Biology, University of North Georgia, Oakwood, GA, USA, United States; School of Natural and Built Environment, Queen s University Belfast, Belfast, UK, United Kingdom; Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Krakow, Poland; Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, College of Animal Science and Technology, Hunan Agricultural University, Changsha, P. R. China, China; Instituto para el Estudio de la Biodiversidad de Invertebrados IEBI , Facultad de Ciencias Naturales, Universidad Nacional de Salta, Salta, Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas CONICET , Salta, Argentina; e biom SA, Namur, Belgium; Laboratory of Evolutionary Genetics and Ecology; Research Unit in Environmental and Evolutionary Biology, Institute of Life, Earth and Environment ILEE , University of Namur, Namur, Belgium; Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, ON, Canada; Faculty of Oceanography and Geography, University of Gda sk, Gda sk, Poland; Department of Evolutionary Biology, Kazimierz Wielki University, Bydgoszcz, Poland; Grupo Reproduccion Asistida y Sanidad Animal, Facultad de Veterinaria, Departamento de Patologia Animal, Universidad de Zaragoza, Zaragoza, Spain; CNR Water Research Institute, Verbania Pallanza, Italy; Environmental Change Research Centre, Department of Geography, University College London, London, UK, United Kingdom; Illinois Natural History Survey, Prairie Research Institute at the University of Illinois at Urbana Champaign, Champaign, IL, USA, United States; Department of Zoology, Pozna University of Life Sciences, Pozna , Poland; Institute of Marine and Environmental Sciences, University of Szczecin, Szczecin, Poland; Great Lakes Institute for Environmental Research, University of Windsor, Windsor, ON, Canada; School of Oceanography, Shanghai Jiao Tong University, Shanghai, China; Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China Invasive bivalves continue to spread and negatively impact freshwater ecosystems worldwide. As different metrics for body size and biomass are frequently used within the literature to standardise bivalve related ecological impacts e.g. respiration and filtration rates , the lack of broadly applicable conversion equations currently hinders reliable comparison across bivalve populations. To facilitate improved comparative assessment among studies originating from disparate geographical locations, we report body size and biomass conversion equations for six invasive freshwater bivalves or species complex members worldwide Corbicula fluminea, C. largillierti, Dreissena bugensis, D. polymorpha, Limnoperna fortunei and Sinanodonta woodiana, and tested the reliability i.e. precision and accuracy of these equations. Body size length, width and height and biomass metrics of living weight LW , wet weight WW , dry weight DW , dry shell weight SW , shell free dry weight SFDW and ash free dry weight AFDW were collected from a total of 44 bivalve populations located in Asia, the Americas and Europe. Relationships between body size and individual biomass metrics, as well as proportional weight to weight conversion factors, were determined. For most species, although inherent variation existed between sampled populations, body size directional measurements were found to be good predictors of all biomass metrics e.g. length to LW, WW, SW or DW R = 0.82 0.96 , with moderate to high accuracy for mean absolute error MAE ±9.14% 24.19%. Similarly, narrow 95% confidence limits and low MAE were observed for most proportional biomass relationships, indicating high reliability for the calculated conversion factors e.g. LW to AFDW; CI range 0.7 2.0, MAE ±0.7% 2.0% . Synthesis and applications. Our derived biomass prediction equations can be used to rapidly estimate the biologically active biomass of the assessed species, based on simpler biomass or body size measurements for a wide range of situations globally. This allows for the calculation of approximate average indicators that, when combined with density data, can be used to estimate biomass per geographical unit area and contribute to quantification of population level effects. These general equations will support meta analyses, and allow for comparative assessment of historic and contemporary data. Overall, these equations will enable conservation managers to better understand and predict ecological impacts of these bivalves. 58 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85109383839 origin=inward Biometric conversion factors as a unifying platform for comparative assessment of invasive freshwater bivalves pdf Coughlan et al 2021.pdf Articolo in rivista Blackwell, 0021 8901 Journal of applied ecology Print Journal of applied ecology Print J. appl. ecol. Print Journal of applied ecology. Print nicolettarita.riccardi RICCARDI NICOLETTA RITA |
