Joseph E. Serafy's research while affiliated with Intelligent Hearing Systems, Miami, FL USA and other places

Publications (87)

Article
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We developed and tested a microwave in situ salinity sensor (MiSSo) to simultaneously measure salinity and temperature within the same water sample over broad ranges of salinity (S) (3–50 psu) and temperature (T) (3–30 °C). Modern aquatic S sensors rely on measurements of conductivity (C) between a set of electrodes contained within a small volume...
Article
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Habitat fragmentation of submerged aquatic vegetation (SAV) transforms the spatial pattern of seascapes by changing both the total area and spatial configuration of the habitat patches. The ecological effects of SAV seascapes are most often assessed using metrics of biological community composition (e.g., species and assemblage changes). We know co...
Article
Comprehensive Everglades Restoration Plan (CERP) objectives include the return of more natural salinity regimes to the bays and estuaries of southern Florida (USA). We examined for spatiotemporal patterns in rainwater killifish (Lucania parva) density and size with emphasis on relations with salinity, salinity variation, submerged aquatic vegetatio...
Article
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Bluefin tuna (Thunnus thynnus) of the western Atlantic Ocean are often incidentally caught in the pelagic longline fishery that targets swordfish (Xiphias gladius) and yellowfin tuna (Thunnus alba-cares) in the Gulf of Mexico. Data on at-vessel and postrelease mortality are lacking. Using the database of the NOAA Southeast Fisheries Science Center'...
Data
Histograms depicting size frequencies (mm CL) of A) all farfantepenaeid shrimps collected, B) those collected north of Black Point, and C), those collected south of Black Point, D) those collected in the dry season, and E) those collected in the wet season. Vertical dashed line in A) separates smaller sizes (to left of line) that were removed from...
Article
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The Biscayne Bay Coastal Wetlands (BBCW) project of the Comprehensive Everglades Restoration Plan (CERP) aims to reduce point-source freshwater discharges and spread freshwater flow along the mainland shoreline of southern Biscayne Bay. These actions will be taken to approximate conditions in the coastal wetlands and bay that existed prior to const...
Data
Salinity distributional trends of A) mean salinity (ppt) and B) standard deviation of salinity (ppt) across sampling sites across all year-seasons sampled while C) depicts the scatter of salinity mean and standard deviation values as well as the significant correlation trend line between them (TIF)
Preprint
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The Biscayne Bay Coastal Wetlands (BBCW) project of the Comprehensive Everglades Restoration Plan (CERP) aims to reduce point-source freshwater discharges and spread freshwater flow along the mainland shoreline of southern Biscayne Bay to approximate conditions in the coastal wetlands and bay that existed prior to construction of canals and water c...
Article
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We conducted a meta-analysis of literature reporting on the use of circle hooks and J-hooks in pelagic longline fisheries. Our study included more data than previous meta-analyses of the effects of hook type, due to both a larger number of relevant studies available in recent years and a more general modelling approach. Data from 42 empirical studi...
Article
The pink shrimp (Farfantepenaeus duorarum) has been selected as an ecological indicator to assess ecological effects on estuaries of implementation of the Comprehensive Everglades Restoration Plan that seeks to restore historical freshwater flows and nearshore salinity regimes in southern Florida. Concern over altered freshwater delivery impacts on...
Article
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A significant obstacle to evaluating the importance of mangrove habitat to coral reef fishes has been the difficulty of disentangling its effects from other subtidal/nearshore habitats or human population pressures. Florida's seascape, unlike most others, has been extensively surveyed and mapped, and there are reliable estimates of human population...
Article
The Gulf Menhaden Brevoortia patronus is frequently cited as playing a predominant role in the trophic structure and function of the northern Gulf of Mexico (GOM) marine ecosystem, yet much work remains in quantifying its ecological importance. We performed a meta-analysis of diet studies to quantify the trophic role of Gulf Menhaden within this ec...
Article
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Several studies conducted at the scale of islands, or small sections of continental coastlines, have suggested that mangrove habitats serve to enhance fish abundances on coral reefs, mainly by providing nursery grounds for several ontogenetically-migrating species. However, evidence of such enhancement at a regional scale has not been reported, and...
Article
While juvenile Atlantic goliath grouper, Epinephelus itajara (Lichtenstein, 1822), are known to depend on mangrove root structure, relationships with water properties (e.g., salinity) and depth remain unclear or understudied. Because availability of suitable mangrove habitat has been suggested as the primary bottleneck to the recovery of this threa...
Article
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The Florida Bay ecosystem supports a number of economically important ecosystem services, including several recreational fisheries, which may be affected by changing salinity and temperature due to climate change. In this paper, we use a combination of physical models and habitat suitability index models to quantify the effects of potential climate...
Conference Paper
An expansion is underway of a nuclear power plant on the shoreline of Biscayne Bay, Florida, USA; the effects of its construction and operation on surrounding marine habitats and fishes are unknown. Consideration of spatial and temporal aspects of monitoring design their influence on statistical power are critical to the design of meaningful enviro...
Article
In many fisheries, some component of the catch is usually released. Quantifying the effects of capture and release on fish survival is critical for determining which practices are sustainable, particularly for threatened species. Using a standardized fishing technique, we studied sublethal (blood physiology and reflex impairment assessment) and let...
Data
The Florida Bay ecosystem supports a number of economically important ecosystem services, including several recreational fisheries, which may be affected by changing salinity and temperature due to climate change. In this paper, we use a combination of physical models and habitat suitability index models to quantify the effects of potential climate...
Article
Live juvenile cobia (Rachycentron canadum) transport methods were examined to determine opportunities for increasing packing density in closed containers for durations up to 24 h. Juvenile cobia (27 to 46 days post-hatch (dph)) were tested for salinity tolerance via abrupt transfer from 35 ppt salinity water to salinities ranging from 0 ppt to 55 p...
Article
To evaluate the effect of elevated pCO(2) exposure on the juvenile growth of the sea urchin Lytechinus variegatus, we reared individuals for three months in one of three target pCO(2) levels: ambient seawater (380 µatm) and two scenarios that are projected to occur by the middle (560 µatm) and end (800 µatm) of this century. At the end of 89 days,...
Article
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Industry standard fishing hooks used prior to 2004 during Us commercial pelagic longline (Pll) fishing were the 8/0–10/0 J-hooks with a 20°–25° offset—a lateral deviation of the hook point relative to the hook shaft. However, federal regulations enacted in 2004 require the Us Pll industry to employ circle hooks allowing up to 10° offset during fish...
Article
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We examine the impact on pelagic fish hooking survival rates (defined as the proportion of fish alive upon gear retrieval) of the rapid switch from J-hooks to circle hooks that was required of the US pelagic longline fishery operating in the Atlantic Ocean and Gulf of Mexico after August 2004. Our focus was on 12 fish taxa that are commonly caught...
Article
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The intent of convening the international symposium on circle hooks in research, management, and conservation was to yield a contemporary, science-based assessment of the management and conservation utility of circle hooks in commercial, recreational, and artisanal fisheries around the globe. The symposium objective was to provide a forum for indiv...
Article
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Although many uncertainties surround the status of western Atlantic sailfish, Istiophorus platypterus (Shaw, 1792), stock size (B) is considered below and fishing mortality rate (F) above the targets that would allow maximum sustainable yield (MSY). One means of improving status is to implement live-release policies and to employ circle hooks to in...
Article
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Rainbow parrotfish Scarus guacamaia is a coral-reef herbivore that requires both mangrove and coral-reef habitat to complete its life cycle. This species is listed as 'vulnerable' by the International Union for Conservation of Nature. The present study used a long-term visual survey of mangrove fishes to develop a predictive habitat model for juven...
Conference Paper
The Florida Keys reef tract contains a suite of important communities, but there are indications that human activity has dramatically altered these communities. Historical data have documented declines in trophy fish size and live coral cover, but these datasets often lack spatial and temporal resolution. As the management focus in marine systems s...
Article
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We investigated the osmoregulatory responses (plasma osmolality and blood hematocrit) displayed by the gray snapper 6–192 h after abrupt changes in ambient salinity. Fish were challenged with six different salinity treatments including a control (0, 5, 30, 50, 60, and 70 ppt) and blood samples were collected at various time points post-transfer. Gr...
Article
The morphometric characteristics that separate white marlin Kajikia albida (Poey, 1860) from roundscale spearfish Tetrapturus georgii Lowe, 1841 can be difficult for non-experts to distinguish, particularly when the animals are in the water. Using the measurements of the lower jaw tip to the longest branchiostegal ray (LJBR) and the opercle (LJOP),...
Article
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Oxygen minimum zones (OMZs) below near-surface optimums in the eastern tropical seas are among the largest contiguous areas of naturally occurring hypoxia in the world oceans, and are predicted to expand and shoal with global warming. In the eastern tropical Pacific (ETP), the surface mixed layer is defined by a shallow thermocline above a barrier...
Article
Whereas diel fish migration between mangrove and seagrass habitats has been recognized for decades, quantitative studies have focused mainly on diurnal patterns of fish distribution and abundance. In general, previous studies have shown that fish abundances decline with increasing distance from mangroves; however, evidence for such a pattern at nig...
Article
Many fishes shelter in mangrove habitats by day and forage mostly in seagrass beds by night. This pattern of diel habitat use has been attributed to a predator avoidance strategy, whereby predation risk is reduced by alternating between the cover afforded by prop-roots during the day and darkness at night. We employed a series of diel tethering exp...
Article
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The white marlin Tetrapturus albidus (Istiophoridae) is considered to be among the most overexploited species under international management jurisdiction in the Atlantic Ocean, resulting in diverse stakeholder concerns. Efforts have been made to add it to the US Endangered Species List. Its population status has become uncertain with the realizatio...
Article
We performed a quantitative review to evaluate circle hook use in recreational and commercial hook-and-line fisheries that interact with billfishes (Family: Istiophoridae). Specifically, we scrutinized the findings of 11 recent empirical studies that reported, on a species-specific basis, side-by-side measures of circle vs. J-hook fishing performan...
Article
Over the last three decades, the California sea hare, Aplysia californica, has played an increasingly important role as a model organism in the neurosciences. Since 1995, the National Resource for Aplysia has supported a growing research community by providing a consistent supply of laboratory-reared individuals of known age, reproductive status, a...
Article
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We characterized Atlantic blue marlin Makaira nigricans temperature–depth vertical habitat utilization from data collected using 51 electronic pop-up satellite archival tags (PSATs) attached to fish released by recreational and commercial fishers. Most source data were in the form of 3 or 6 h, temperature- and depth-frequency histograms transmitted...
Article
Hierarchical data frameworks have been proposed to determine the relative value of fish habitats. Although conceptually accurate, judgments as to which habitat is more “essential” are limited by a lack of available information. This work provides much needed growth and production rates for gray snapper (Lutjanus griseus), an ontogenetic habitat shi...
Article
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LIRMAN, D.; DEANGELO, G.; SERAFY, J.E.; HAZRA, A.; HAZRA, D.S.; and BROWN, A., 2008. Geospatial video monitoring of nearshore benthic habitats of western Biscayne Bay (Florida) using the shallow-water positioning sys- tem (SWaPS). Journal of Coastal Research, 24(1A), 135-145. West Palm Beach (Florida), ISSN 0749-0208. The nearshore habitats of west...
Article
Challenges associated with species identification, live collection and laboratory maintenance of billfish larvae have hindered research on their physiology and behavior. In the present study, short-duration neuston net tows in the Straits of Florida yielded 19 live istiophorid billfish larvae, which were immediately placed in a shipboard vertical s...
Data
Management and conservation of many highly migratory fish species are based on population assessments that rely heavily on catch and effort data from the pelagic longline fishing industry. In 2003, we monitored hook time at depth for shallow-set commercial longlines (i.e., four hooks between surface buoys) targeting swordfish Xiphias gladius in the...
Article
Full-text available
Management and conservation of many highly migratory fish species are based on population assessments that rely heavily on catch and effort data from the pelagic longline fishing industry. In 2003, we monitored hook time at depth for shallow-set commercial longlines (i.e., four hooks between surface buoys) targeting swordfish Xiphias gladius in the...
Article
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Fringing mangrove forests and seagrass beds harbor high densities of juvenile snappers and grunts compared to bare substrates, but their occupancy of these habitats is not homogeneous at ecologically meaningful scales, thus limiting our ability to compare habitat value. Here, density and size information were used to determine how gray snapper, Lut...
Article
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From 1998 to 2005, 537 visual fish surveys were conducted along a 50-km stretch of mangrove-lined shoreline in the vicinity of Biscayne Bay (southeastern Florida, USA). The shoreline lies directly downstream of a major wetlands restoration project that aims to return more natural salinity regimes to the western margin of the region's coastal bays....
Article
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Full Article Access here: http://independent.academia.edu/SarahFriasTorres/Papers/
Article
Field studies were conducted in Johnson Key Basin, Florida Bay, USA from September 2002 through September 2004 to examine physiological, ecological, and behavioral characteristics of the gulf toadfish, Opsanus beta (Goode and Bean in Proc US Natl Mes 3:333–345, 1880), in relation to nitrogen metabolism, habitat usage, and spawning. Fish collected 5...
Article
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The sailfish, Istiophorus platypterus (Shaw in Shaw and Nodder, 1792), is one of the most frequently caught istiophorids along the Pacific coast of Central America. Although conventional constituent-based tagging of sailfish in this region has been ongoing for several decades, little insight has emerged regarding their movements among multinational...
Article
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The roundscale spearfish, Tetrapturus georgii Lowe, 1840, is known only from four specimens from the Mediterranean and eastern North Atlantic. Additional specimens have not been identified since 1961, making the validity and distribution of this species unclear. Analysis of 16 billfish specimens from the western North Atlantic on the basis of scale...
Article
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During the 1960s, water management practices resulted in the conversion of the wetlands that fringe northeastern Florida Bay (USA) from freshwater/oligohaline herbaceous marshes to dwarf red mangrove forests. Coincident with this conversion were several ecological changes to Florida Bay’s fauna, including reductions in the abundances of top trophic...
Article
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Similar to nearshore systems in temperate latitudes, the nursery paradigm for tropical back-reef systems is that they provide a habitat for juveniles of species that subsequently make ontogenetic shifts to adult populations on coral reefs (we refer to this as the nursery function of back-reef systems). Nevertheless, we lack a full understanding of...
Article
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Mangroves dominate undisturbed natural shorelines of many sub-tropical and tropical regions, yet their utilization by fishes is poorly understood. To provide the first comprehensive list of empirical field studies for comparative and reference purposes, we assembled and quantified aspects of 111 mangrove-fish surveys published between 1955 and 2005...
Article
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A quantitative framework and numerical methodology were developed to characterize vertical habitat utilization by large pelagic animals and to estimate the probability of their capture by certain types of fishing gear. Described are the steps involved to build ‘vertical habitat envelopes’ from data recovered from an electronically tagged blue marli...
Article
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We evaluated data from electronic popup satellite archival tags (PSATs) collected via Argos transmissions as well as high resolution data from recovered tags to characterize the depth distributions of blue marlin in relation, ultimately, to their exposure to hooks fished from longline gear. Our tagged fish spent most of their time in the near surfa...
Article
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We monitored hook time at depth for experimental longlines set in the Windward Passage in 2003 using time depth recorders (TDRs) attached at regular intervals along the mainline. The TDRs were placed on every 13th hook (~43 TDRs per set) resulting in a 7-9% coverage at the deepest point in the corresponding basket and once in every section of the s...
Article
The identification of larval istiophorid billfishes from the western North Atlantic Ocean has long been problematic. In the present study, a molecular technique was used to positively identify 27 larval white marlin (Tetrapturus albidus), 96 larval blue marlin (Makaira nigricans), and 591 larval sailfish (Istiophorus platypterus) from the Straits o...
Article
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With a focus on white marlin (Tetrapturus albidus), a concurrent electronic tagging and larval sampling effort was conducted in the vicinity of Mona Passage (off southeast Hispaniola), Dominican Republic, during April and May 2003. Objectives were 1) to characterize the horizontal and vertical movement of adults captured from the area by using pop-...
Data
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White marlin (Tetrapturus albidus) and blue marlin (Makaira nigricans) are widely distributed throughout the tropical and temperate waters of the Atlantic Ocean and adjacent seas; the former species is endemic only to the Atlantic Ocean (Mather et al., 1975). Genetic analyses and tag recapture data have indicated that each spe-cies has a single Atl...
Article
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Fringe mangroves associated with islands of the subtropical Atlantic/Caribbean region create extensive subtidal mangrove epibiont communities. While increasingly recognized as an important habitat, few studies have focused on the trophic structure of communities associated with mangrove prop-roots. We examined trophic linkages among primary produce...
Article
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The Comprehensive Everglades Restoration Plan aims to make considerable changes to the quantity, quality, and timing of freshwater delivery to the southeastern saline Everglades (SESE), a mangrove ecosystem located between the freshwater Everglades and downstream estuarine embayments. Whereas fishes inhabiting seasonally-inundated areas of the SESE...
Article
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Postmetamorphic growth and metabolism measurements were obtained on two cohorts of laboratory-reared Diadema antillarum. The cohorts grew linearly from less than 1 mm to over 43 mm. Daily growth averaged 0.097 and 0.11 mm d−1, respectively, for the two cohorts, and was found to differ significantly. Urchin metabolism was examined by a series of sim...
Article
Exuma Sound is a semi-enclosed body of water bounded by islands of the Bahamas. During July 2000, sampling for larval billfish was carried out throughout the Sound's surface waters as well as in adjacent open waters of the Atlantic Ocean. A total of 99 larval billfish (Istiophoridae) was collected. Ninety of the larvae were identifiable as blue mar...
Technical Report
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An update of the historical tag release and recapture files from western Atlantic tagging programs for Atlantic white marlin (Tetrapturus albidus) are presented. The primary sources of data are the Southeast Fisheries Science Center’s Cooperative Tagging Center (CTC) and The Billfish Foundation (TBF). Limited information was also obtained from the...
Article
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Biscayne Bay is a shallow subtropical lagoon on Florida's southeastern coast that is bordered to the west by the mainland and to the east by barrier islands and keys. Fish assemblages inhabiting two types of mangrove-lined shoreline that encompass the Bay were examined using a visual 'belt-transect' census method over four consecutive seasons. Seve...
Article
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We developed robust allometric relationships for pink shrimp Farfantepenaeus (=Penaeus) duorarum by focusing on appropriate mathematical models and statistical procedures for parameter estimation. We utilized fishery-independent data on the abundance and size of juvenile and subadult pink shrimp from an efficient sampling program in Biscayne Bay, F...