Standardizing Estimates of Biomass at Recruitment and Productivity for Fin- and Shellfish in Coastal Habitats

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SPECIAL SECTION: RESTORATION BENEFITS IN GULF OF MEXICO

Standardizing Estimates of Biomass at Recruitment and Productivity for Fin- and Shellfish in Coastal Habitats Just Cebrian 1,2,3 & Hui Liu 4 & Mary Christman 5 & Terill Hollweg 6 & Deborah French McCay 7 & Richard Balouskus 7,8 & Conor McManus 7,8 & Heather Ballestero 9 & Jennifer White 9 & Scott Friedman 9 & Kristopher Benson 10 Received: 29 March 2018 / Revised: 8 October 2019 / Accepted: 18 December 2019 # Coastal and Estuarine Research Federation 2020

Abstract Assessing the biomass and productivity of fin- and shellfish supported by coastal ecosystems is important to develop plans for the conservation and restoration of these ecosystems, but such assessments are not easy to obtain. We developed a protocol that, from density data, quantifies biomass at recruitment for species where information exists to derive life history tables, and productivity where such information does not exist. Our protocol also assesses the variability (i.e., variance) for the calculated biomass and productivity values. For relatively well-reported species, inferences regarding differences among habitats or species can be suggested. For instance, application of our protocol to juvenile pinfish confirms its well-known preference for structured habitats. Mud crabs also seem to reach higher productivity levels in structured than open bottom habitats. For poorly reported species, only a general idea can be gleaned. However, larger data sets of fin- and shellfish density in shallow coastal systems are needed to increase the accuracy, precision, and comprehensiveness of the estimates of biomass at recruitment and productivity generated with our protocol. With such larger data sets and the use of statistical tools such as Bayesian methods, the protocol can significantly help improve our understanding and management of fisheries productivity in coastal systems. Keywords Fish . Invertebrates . Estuaries . Recruitment . Biomass . Productivity

Introduction Coastal ecosystems lie at the interface between the land and ocean, and include estuaries and other types of coasts that are

not at the confluence of rivers and oceans (Valiela 2006). Foundational components, such as marshlands, seagrass beds, biogenic reefs, and sediment flats, form these ecosystems. Coastal ecosystems generate many benefits for humankind

Communicated by Henrique Cabral Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12237-019-00691-2) contains supplementary material, which is available to authorized users. * Just Cebrian [email protected] 1

Dauphin Island Sea Lab, 101 Bienville Boulevard, Dauphin Island, AL 36528, USA

2

Department of Marine Sciences, University of South Alabama, Mobile, AL 36688, USA

3

Present address: Northern Gulf Institute, Mississippi State University, Stennis Space Center, MS 39529, USA

4

Department of Marine Biology, Texas A&M University, Galveston Campus, 200 Seawolf Parkway, Galveston, TX 77554, USA

5

MCC Statistical Consulting LL