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Marine Biology

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Articles 91 - 120 of 535

Full-Text Articles in Terrestrial and Aquatic Ecology

Eavesdropping On Animals: Can Bioacoustics Help Save Species?, Zoe Grueskin Dec 2022

Eavesdropping On Animals: Can Bioacoustics Help Save Species?, Zoe Grueskin

Capstones

Around the world, scientists are using sound to study the natural world in a growing field called bioacoustics. Researchers are eavesdropping on frogs and fish, elephants and earthworms, and many hope what they hear can inform and inspire conservation action around the world. From the field’s auspicious beginning with accidentally-recorded whales, to researchers today listening to locations as diverse as the Arctic seafloor and India’s Western Ghats mountain range, this capstone project explores the potential — and limitations — of conservation bioacoustics. Read the story, see photos and listen to audio pieces featuring three bioacousticians and their field recordings here: …

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Microplastic Accumulation In The Digestive Tract Of Young-Of-Year Atlantic Sharpnose Sharks (Rhizoprionodon Terraenovae) In The Grand Strand, Sc, Andrew Curtis Sitlinger Dec 2022

Microplastic Accumulation In The Digestive Tract Of Young-Of-Year Atlantic Sharpnose Sharks (Rhizoprionodon Terraenovae) In The Grand Strand, Sc, Andrew Curtis Sitlinger

Electronic Theses and Dissertations

This study focused on the presence and accumulation of microplastic fibers in the digestive tract and livers of young-of-year Atlantic Sharpnose Sharks (Rhizopriondon terraenovae) from two sampling locations along the Grand Strand of South Carolina. R. terraenovae is a small, mesopredatory elasmobranch found abundantly along northwestern Atlantic Ocean coastlines. Thirty specimens of R. terraenovae were collected from May through August of 2020. Microplastics were found in all specimens. A total of 672 plastic particles were identified over the course of the study, with an average of 22.4 ± 10.5 (SD) plastics per specimen. The majority of the plastics were classified …

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Crustacean Assemblage Structure Over The Charlie-Gibbs Fracture Zone Of The Mid-Atlantic Ridge Collected During The 2009 Henry B. Bigelow Expedition, Kathryn Medina Dec 2022

Crustacean Assemblage Structure Over The Charlie-Gibbs Fracture Zone Of The Mid-Atlantic Ridge Collected During The 2009 Henry B. Bigelow Expedition, Kathryn Medina

All HCAS Student Capstones, Theses, and Dissertations

The Charlie Gibbs Fracture Zone (CGFZ) consists of two nearly parallel fracture transform faults that intersect the Mid-Atlantic Ridge (MAR) axis. This area has high primary productivity and biomass levels due to the topography and water. A predominant hydrographic feature of the MAR is the Sub-Polar Front (SPF) which runs along the southern edge of the CGFZ and is known as a biogeographical boundary for multiple species. As part of The Census of Marine Life project Patterns and Processes of the Ecosystem of the northern Mid-Atlantic (MAR-ECO), this study analyzed the abundance and distribution patterns of the CGFZ crustacean community …

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Internal Vertebral Morphology Of Bony Fishes Matches The Mechanical Demands Of Different Environments, Dana Baxter, Karly E. Cohen, Cassandra M. Donatelli, Eric D. Tytell Nov 2022

Internal Vertebral Morphology Of Bony Fishes Matches The Mechanical Demands Of Different Environments, Dana Baxter, Karly E. Cohen, Cassandra M. Donatelli, Eric D. Tytell

Engineering Faculty Articles and Research

Fishes have repeatedly evolved characteristic body shapes depending on how close they live to the substrate. Pelagic fishes live in open water and typically have narrow, streamlined body shapes; benthic and demersal fishes live close to the substrate; and demersal fishes often have deeper bodies. These shape differences are often associated with behavioral differences: pelagic fishes swim nearly constantly, demersal fishes tend to maneuver near the substrate, and benthic fishes often lie in wait on the substrate. We hypothesized that these morphological and behavioral differences would be reflected in the mechanical properties of the body, and specifically in vertebral column …

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Impacts Of Algal Morphology And Water Flow On Macroalgal Microplastic Capture, Cheyenne M. Adams Nov 2022

Impacts Of Algal Morphology And Water Flow On Macroalgal Microplastic Capture, Cheyenne M. Adams

Honors College Theses

Microplastic pollution is a major area of concern in marine environments, especially as microplastics enter the food web. This study used pipe cleaners and two lichen species as algal mimics, and Chaetomorpha sp. and Chondrus crispus as model algal species to test the effects of morphology and biomass on microbead and foam capture. This study also utilized two different water flow methods: vortices and waves. Results suggest that water flow, as well as biomass and morphology, play a role in microplastic capture in macroalgae. For all mimics and algal species, except Cladonia lichens, turfs with increased biomass and length showed …

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Variation In Coastal Macroinvertebrate Species Diversity On Intertidal Boulders In Trinidad, California., Louis Antonelli, Alexandra Winkler, Theron Taylor, Natalie Greenleaf Oct 2022

Variation In Coastal Macroinvertebrate Species Diversity On Intertidal Boulders In Trinidad, California., Louis Antonelli, Alexandra Winkler, Theron Taylor, Natalie Greenleaf

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt

Coastal environments of Humboldt County provide an optimal habitat for a diversity of macroinvertebrates. This study’s focus is to determine the differences in diversity of coastal macroinvertebrate (CM) species on intertidal boulders. Eleven CM species were visually counted within a one-square-meter quadrat along two height strata of five intertidal boulders. Based upon the Shannon-Wiener diversity index, diversity was measured between the CM species in the lower region (0-1 meter from base of boulder) and the upper region (1-2 meters from base of boulder). The resulting data showed the lower regions of the boulders had a higher average diversity rating, as …

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Relationships Between Mercury And Trophic Level In Nine Coastal Pelagic Fishes Off Southeastern Florida, Emily Akins Aug 2022

Relationships Between Mercury And Trophic Level In Nine Coastal Pelagic Fishes Off Southeastern Florida, Emily Akins

All HCAS Student Capstones, Theses, and Dissertations

State and federal agencies have issued consumption advisories for various fish species for many years, including in Florida. Upper-level predatory fish, such as tunas and mackerels, are especially popular with anglers but are susceptible to high levels of mercury through bioaccumulation and biomagnification. This study used two data sets over two time periods, 2010-2012 and 2020-2021, to compare mercury and trophic level relationships in nine coastal pelagic fishes is Southeastern Florida. As these species are popular in recreational fisheries, charter and tournament catches formed the base of the samples that were analyzed for total mercury along with carbon and nitrogen …

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Abundance, Site-Fidelity, And Association Patterns Of Coastal Bottlenose Dolphins (Tursiops Truncatus) Off Southeast Florida, Graysen D. Boehning Jul 2022

Abundance, Site-Fidelity, And Association Patterns Of Coastal Bottlenose Dolphins (Tursiops Truncatus) Off Southeast Florida, Graysen D. Boehning

All HCAS Student Capstones, Theses, and Dissertations

The coastal bottlenose dolphin is well studied throughout its natural range, however, most of the study areas comprised wide, well-protected habitats such as bays and estuaries, and not narrow coastal sandbanks. This study identifies a residential group of coastal bottlenose dolphins utilizing the narrow sandbanks within the Northwestern Atlantic waters off the coast of Palm Beach County, Florida, USA. From 2014-2020, 313 boat surveys were conducted, and 585 individual dolphins were identified using photo-ID. Twenty-four animals were determined to be full-time and 66 animals were determined to be part-time residents. Full-time and part-time residents associated in three social tribes, with …

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Impacts Of Nitrogen Enrichment On Corals – A Remote Sensing Approach, David E. Carrasco May 2022

Impacts Of Nitrogen Enrichment On Corals – A Remote Sensing Approach, David E. Carrasco

Master's Projects and Capstones

Anthropogenic activities have resulted in ever-increasing threats to coral reefs globally, wherein the rate of environmental changes have exceeded the historical capacity of corals to adapt. This has threatened the persistence of coral ecosystems and their associated ecosystem services, which billions of people rely on for their livelihoods. The most prevalent stressor is nitrogen enrichment, which while present naturally, is exacerbated by the anthropogenic input of nutrients via the discharge of agricultural and urban waste waters. The focus is to answer the central research question of how nitrogen enrichment impacts corals, and how it interacts with other stressors with particular …

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Site Fidelity Of Bottlenose Dolphins (Tursiops Truncatus) Using Elemental Analyses And Photo-Identification, Lauren R. Clance May 2022

Site Fidelity Of Bottlenose Dolphins (Tursiops Truncatus) Using Elemental Analyses And Photo-Identification, Lauren R. Clance

Graduate Theses and Dissertations (2019 - present)

The objective of this study was to determine if bottlenose dolphins (Tursiops truncatus) in Alabama waters acquire location-specific elemental signatures indicative of site fidelity. I measured trace metal concentrations (Chapter II) and stable isotope ratios (Chapter III) in skin from free-ranging dolphins remotely biopsied in Mobile Bay, the northern Gulf of Mexico (Gulf) and eastern Mississippi Sound (EMSS). Elemental findings were corroborated with photo-identification data. I found that dolphins acquired some location-specific elements indicative of site fidelity, with the greatest differences at geographic extremes, particularly relative to salinity. For trace metals, highest concentrations were found in winter, consistent with higher …

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Accumulation Of Persistent Organic Pollutants In Marine Mammals: A Case Study On Cetaceans, Pinnipeds, And Sirenians, Alydia Moorhead Apr 2022

Accumulation Of Persistent Organic Pollutants In Marine Mammals: A Case Study On Cetaceans, Pinnipeds, And Sirenians, Alydia Moorhead

All HCAS Student Capstones, Theses, and Dissertations

Persistent organic pollutants (POPs) are lipophilic semi-volatile organic chemicals that present a range of challenges to marine biota, specifically marine mammals that often occupy a high trophic position in the food web. POPs have become a global problem since they have been shown to cause immunologic, teratogenic, carcinogenic, neurological, and reproductive complications in living organisms due to their resistance to biodegradation and their lipophilic nature. Marine mammals can accumulate these toxic substances through direct ingestion, trophic transfer, adsorption, and maternal offloading. They are susceptible to both bioaccumulation and biomagnification of POPs. Accumulation of POPs is affected by many variables, including …

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Movement Patterns Of The Shovelnose Guitarfish (Pseudobatos Productus) And California Bat Ray (Myliobatis Californica) In The Southern California Bight, Annabel Gong Apr 2022

Movement Patterns Of The Shovelnose Guitarfish (Pseudobatos Productus) And California Bat Ray (Myliobatis Californica) In The Southern California Bight, Annabel Gong

Theses

While the movement patterns of large elasmobranch species have been studied extensively, those of smaller, mesopredatory species remain understudied. The shovelnose guitarfish (Pseudobatos productus) and the California bat ray (Myliobatis californica) are among the least studied elasmobranchs in the Southern California Bight. This study quantified the broad- and fine-scale movement patterns of these species using passive acoustic telemetry. Twelve guitarfish were surgically implanted with coded acoustic transmitters at a known aggregation site off La Jolla (San Diego County), California, USA and tracked for 849.5 days each, on average. Six bat rays were also implanted here and tracked for …

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Global And Regional Sea Level Rise Scenarios For The United States: Updated Mean Projections And Extreme Weather Level Probabilities Along U.S. Coastlines, William V. Sweet, Benjamin D. Hamlington, Robert E. Kopp, Christopher P. Weaver, Patrick L. Barnard, David Bekaert, William Brooks, Michael Craghan, Gregory Dusek, Thomas Frederikse, Gregory Garner, Ayesha S. Genz, John P. Krasting, Eric Larour, Doug Marcy, John J. Marra, Jayantha Obeysekera, Mark Osler, Matthew Pendleton, Daniel Roman, Lauren Schmied, Will Veatch, Kathleen D. White, Casey Zuzak Feb 2022

Global And Regional Sea Level Rise Scenarios For The United States: Updated Mean Projections And Extreme Weather Level Probabilities Along U.S. Coastlines, William V. Sweet, Benjamin D. Hamlington, Robert E. Kopp, Christopher P. Weaver, Patrick L. Barnard, David Bekaert, William Brooks, Michael Craghan, Gregory Dusek, Thomas Frederikse, Gregory Garner, Ayesha S. Genz, John P. Krasting, Eric Larour, Doug Marcy, John J. Marra, Jayantha Obeysekera, Mark Osler, Matthew Pendleton, Daniel Roman, Lauren Schmied, Will Veatch, Kathleen D. White, Casey Zuzak

National Oceanographic and Atmospheric Administration: Technical Reports and Related Materials

This report and accompanying datasets from the U.S. Sea Level Rise and Coastal Flood Hazard Scenarios and Tools Interagency Task Force provide 1) sea level rise scenarios to 2150 by decade that include estimates of vertical land motion and 2) a set of extreme water level probabilities for various heights along the U.S. coastline. These data are available at 1-degree grids along the U.S. coastline and downscaled specifically at NOAA tide-gauge locations. Estimates of flood exposure are assessed using contemporary U.S. coastal flood-severity thresholds for current conditions (e.g., sea levels and infrastructure footprint) and for the next 30 years (out …

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Underwater Video As A Tool To Quantify Fish Density In Complex Coastal Habitats, Ronald Baker, Dakota Bilbrey, Aaron Bland, Frank D’Alonzo Iii, Hannah Ehrmann, Sharon Havard, Zoe Porter, Sarah Ramsden, Alexandra Rodriquez Jan 2022

Underwater Video As A Tool To Quantify Fish Density In Complex Coastal Habitats, Ronald Baker, Dakota Bilbrey, Aaron Bland, Frank D’Alonzo Iii, Hannah Ehrmann, Sharon Havard, Zoe Porter, Sarah Ramsden, Alexandra Rodriquez

University Faculty and Staff Publications

Habitat loss is a serious issue threatening biodiversity across the planet, including coastal habitats that support important fish populations. Many coastal areas have been extensively modified by the construction of infrastructure such as ports, seawalls, docks, and armored shorelines. In addition, habitat restoration and enhancement projects often include constructed breakwaters or reefs. Such infrastructure may have incidental or intended habitat values for fish, yet their physical complexity makes quantitatively sampling these habitats with traditional gears challenging. We used a fleet of unbaited underwater video cameras to quantify fish communities across a variety of constructed and natural habitats in Perdido and …

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Fish And Invertebrate Use Of Restored Vs. Natural Oyster Reefs In A Shallow Temperate Latitude Estuary, Jonathan H. Grabowski, Christopher J. Baillie, Adam Baukus, Rachael Carlyle, F. Joel Fodrie, Rachel K. Gittman, A. Randall Hughes, David L. Kimbro, Juhyung Lee, Hunter S. Lenihan, Sean P. Powers, Kevin Sullivan Jan 2022

Fish And Invertebrate Use Of Restored Vs. Natural Oyster Reefs In A Shallow Temperate Latitude Estuary, Jonathan H. Grabowski, Christopher J. Baillie, Adam Baukus, Rachael Carlyle, F. Joel Fodrie, Rachel K. Gittman, A. Randall Hughes, David L. Kimbro, Juhyung Lee, Hunter S. Lenihan, Sean P. Powers, Kevin Sullivan

University Faculty and Staff Publications

Coastal marine habitats continue to be degraded, thereby compelling largescale restoration in many parts of the world. Whether restored habitats function similarly to natural habitats and fully recover lost ecosystem services is unclear. In estuaries, oyster reefs have been degraded by multiple anthropogenic activities including destructive fishing practices and reduced water quality, motivating restoration to maintain oyster fisheries and other ecosystem services, often at relatively high cost. We compared fish and invertebrate communities on recently restored (0–1 year post-restoration), older restored (3–4 years post-restoration), and natural oyster reefs to determine if and when restored reefs support functionally similar faunal communities. …

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Population Dynamics, Relative Abundance, And Habitat Suitability Of Adult Red Drum (Sciaenops Ocellatus) In Nearshore Waters Of The North-Central Gulf Of Mexico, Crystal Hightower, J. Marcus Drymon, Amanda E. Jefferson, Matthew B. Jargowsky, Emily A. Seubert, Simon Dedman, John Mareska, Sean P. Powers Jan 2022

Population Dynamics, Relative Abundance, And Habitat Suitability Of Adult Red Drum (Sciaenops Ocellatus) In Nearshore Waters Of The North-Central Gulf Of Mexico, Crystal Hightower, J. Marcus Drymon, Amanda E. Jefferson, Matthew B. Jargowsky, Emily A. Seubert, Simon Dedman, John Mareska, Sean P. Powers

University Faculty and Staff Publications

In the Gulf of Mexico, the red drum (Sciaenops ocellatus) is an immensely popular sportfish, yet the Gulf of Mexico stock is currently managed as data-limited in federal waters. The results of the federal stock assessment conducted in 2016 for Gulf of Mexico red drum were not recommended for providing management advice. Consequently, we sought to address data gaps highlighted in the assessment by producing up-to- date overall and sex-specific growth models, standardized indices of relative abundance, and predictions of habitat suitability and by updating estimates of natural mortality. Using a time series for the period of 2006–2018, we assigned …

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Ms Environmental Biology Capstone Project, Catherine Shapiro Jan 2022

Ms Environmental Biology Capstone Project, Catherine Shapiro

Regis University Student Publications (comprehensive collection)

Chapter 1: Artificial light at night disrupts the biology of fishes. Chapter 2: Grant proposal to determine how artificial light at night affects Pumpkinseed fish. Chapter 3: Management of pinyon-juniper woodland impacts the occupancy of Pinyon Jays. Chapter 4: Stakeholder analysis of horseshoe crab fishing and its impacts on the Red Knot and biomedical industry.

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Ecological Risk Assessment For The Western Rock Lobster Resource : Workshop Procedure And Outcomes, R Stoklosa Jan 2022

Ecological Risk Assessment For The Western Rock Lobster Resource : Workshop Procedure And Outcomes, R Stoklosa

Fisheries Occasional Publications

No abstract provided.

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Sentience In Decapods: Difficulties To Surmount, Michael L. Woodruff Jan 2022

Sentience In Decapods: Difficulties To Surmount, Michael L. Woodruff

Animal Sentience

In the target article Crump et al. present 8 criteria to assess whether decapods experience pain. Four of these -- sensory integration, motivational trade-offs, flexible self-protection, and associative learning -- could be used to assess sentience in general. In this commentary I discuss difficulties with using these criteria to provide evidence of sentience in decapods, particularly if this evidence is to change public opinion and policies. These difficulties are lack of evidence, the potential to eventually explain the neurobiological basis of the behaviors chosen as criteria, thereby eliminating any explanatory work for sentience, and the reluctance to bring animals that …

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Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett Jan 2022

Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett

Fisheries Occasional Publications

A Floating Upwelling System or FLUPSY is a mechanical system for the culture of seed stock during the nursery stage of commercial bivalve production.

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A Subsurface Eddy Associated With A Submarine Canyon Increases Availability And Delivery Of Simulated Antarctic Krill To Penguin Foraging Regions, K. Hudson, M. J. Oliver, J. Kohut, Michael S. Dinniman, John M. Klinck, M. A. Cimino, K. S. Bernard, H. Statscewich, W. Fraser Jan 2022

A Subsurface Eddy Associated With A Submarine Canyon Increases Availability And Delivery Of Simulated Antarctic Krill To Penguin Foraging Regions, K. Hudson, M. J. Oliver, J. Kohut, Michael S. Dinniman, John M. Klinck, M. A. Cimino, K. S. Bernard, H. Statscewich, W. Fraser

OES Faculty Publications

The distribution of marine zooplankton depends on both ocean currents and swimming behavior. Many zooplankton perform diel vertical migration (DVM) between the surface and subsurface, which can have different current regimes. If concentration mechanisms, such as fronts or eddies, are present in the subsurface, they may impact zooplankton near-surface distributions when they migrate to near-surface waters. A subsurface, retentive eddy within Palmer Deep Canyon (PDC), a submarine canyon along the West Antarctic Peninsula (WAP), retains diurnal vertically migrating zooplankton in previous model simulations. Here, we tested the hypothesis that the presence of the PDC and its associated subsurface eddy increases …

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Evaluating Muskellunge (Esox Masquinongy) Catch-And-Release Mortality At Elevated Summer Water Temperature, Ian Taylor Booth Jan 2022

Evaluating Muskellunge (Esox Masquinongy) Catch-And-Release Mortality At Elevated Summer Water Temperature, Ian Taylor Booth

Graduate Theses, Dissertations, and Problem Reports (ETD)

Angling for Muskellunge (Esox masquinongy) has become widespread and increasingly popular throughout the fish’s range. Current management strategies for Muskellunge include high minimum harvest lengths (>1016mm), closed seasons, and catch-and-release regulations. Due to these strategies and angler sentiments, up to 97% of Muskellunge caught today are released by anglers assuming they will live and be caught again in the future. Previous research on catchand-release mortality in Muskellunge has suggested relatively low mortality rates (0%-5%). However, these studies were all conducted within the fish’s thermal optimum and generally at water temperatures25°C during the summer months, representing a need to evaluate …

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Histological Comparison Of Shark Dermis Across Various Ecomorphologies, Olivia Schuitema Jan 2022

Histological Comparison Of Shark Dermis Across Various Ecomorphologies, Olivia Schuitema

UNF Graduate Theses and Dissertations

The integument plays essential roles in the structural support, protection, and hydrodynamic capability among fishes. Most shark skin research has been done on the external epidermal layer containing the dermal denticles, while the larger dermis layer has been mostly ignored. The dermis layer in sharks is composed of two layers, the upper stratum laxum and the lower stratum compactum, holding supportive collagen and elastin fibers. There may be morphological and compositional differences in the dermis layers across various species of sharks, although the extent of such is unknown. These potential differences may be represented by various dermal thicknesses and different …

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Radon (222rn) As Tracer For Submarine Groundwater Discharge Investigation—Limitations Of The Approach At Shallow Wind-Exposed Coastal Settings, Michael Schubert, Jan Scholten, Matthias Kreuzburg, Eric Petermann, Mariele Lopes De Paiva, Dennis Kohler, V. Liebetrau, John Rapaglia, Michael Schlüter Jan 2022

Radon (222rn) As Tracer For Submarine Groundwater Discharge Investigation—Limitations Of The Approach At Shallow Wind-Exposed Coastal Settings, Michael Schubert, Jan Scholten, Matthias Kreuzburg, Eric Petermann, Mariele Lopes De Paiva, Dennis Kohler, V. Liebetrau, John Rapaglia, Michael Schlüter

Biology Faculty Publications

Mapping radon (222Rn) distribution patterns in the coastal sea is a widely applied method for localizing and quantifying submarine groundwater discharge (SGD). While the literature reports a wide range of successful case studies, methodical problems that might occur in shallow wind-exposed coastal settings are generally neglected. This paper evaluates causes and effects that resulted in a failure of the radon approach at a distinct shallow wind-exposed location in the Baltic Sea. Based on a simple radon mass balance model, we discuss the effect of both wind speed and wind direction as causal for this failure. We show that at coastal …

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Who Are We? Highlighting Nuances In Asian American Experiences In Ecology And Evolutionary Biology, K. H. Nguyen, A. K. Akiona, C. C. Chang, V. B. Chaudhary, S. J. Cheng, S. M. Johnson, S. S. Kahanamoku, A. Lee, E. E. Deleon Sanchez, L. M. Segui, Richelle L. Tanner Nov 2021

Who Are We? Highlighting Nuances In Asian American Experiences In Ecology And Evolutionary Biology, K. H. Nguyen, A. K. Akiona, C. C. Chang, V. B. Chaudhary, S. J. Cheng, S. M. Johnson, S. S. Kahanamoku, A. Lee, E. E. Deleon Sanchez, L. M. Segui, Richelle L. Tanner

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

"As ecologists and evolutionary biologists, it is important to recognize that issues surrounding AAPI do not exist in a vacuum and that these issues affect some of our students and colleagues in and outside of the classroom and lab. Recently, anti-Asian racism has been brought to the forefront of US society. Though media attention has primarily focused on how COVID-19 fears motivated both violent and nonviolent racist incidents against East Asians in 2020 (e.g., Chinese and Taiwanese Americans) (Tessler et al. 2020), attacks on other AAPI groups, such as South and Southeast Asians (e.g., Filipino, Pakistani, and Vietnamese Americans) (Truong …

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Wrack Lines Volume 21, Number 2, Fall/Winter 2021-22, Nancy C. Balcom, Judy Benson, Syma A. Ebbin, Kira Goldenberg, Judy Preston, Howard "Mickey" Weiss Nov 2021

Wrack Lines Volume 21, Number 2, Fall/Winter 2021-22, Nancy C. Balcom, Judy Benson, Syma A. Ebbin, Kira Goldenberg, Judy Preston, Howard "Mickey" Weiss

Wrack Lines

"Discovery, Rediscovery and Rebirth: new eyes, new understanding of familiar places" is the theme for the Fall-Winter 2021-22 issue. The main article package consists of five stories about the lands and waters that will comprise the Connecticut National Estuarine Research Reserve (CT NERR). These are: overview and introduction; Great Island; lower Thames River; Bluff Point State Park; and Haley Farm State Park. Other articles include one on research into the cause of invasive Cladophora seaweed dominating Little Narragansett Bay; and another on the transformation of the Yale Peabody Museum of Natural History.

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Fisheries Science Update – October 2021: West Coast Demersal Scalefish Resource, Department Of Primary Industries And Regional Development, Western Australia Oct 2021

Fisheries Science Update – October 2021: West Coast Demersal Scalefish Resource, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Occasional Publications

Key points: 2021 stock assessment outcomes • The West Coast Demersal Scalefish Resource (WCDSR) is halfway into a 20-year recovery plan following a period of overfishing in the 1990s and 2000s. • This latest assessment provides an important “health check” on the recovery status. • The recovery plan is based on maintaining recreational (including charter) and commercial sector’s total fishing mortality below catch limits and protecting key spawning aggregations to recover the WCDSR by 2030. • The Department of Primary Industries and Regional Development (DPIRD) tracks recovery progress by undertaking weight of evidence stock assessments of WCDSR indicator species dhufish …

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Kelp Morphology And Herbivory Are Maintained Across Latitude Despite Geographic Shift In Kelp-Wounding Herbivores, Nicholas P. Burnett, Eric J. Armstrong, Rosemary Romero, Charlotte C. Runzel, Richelle L. Tanner Sep 2021

Kelp Morphology And Herbivory Are Maintained Across Latitude Despite Geographic Shift In Kelp-Wounding Herbivores, Nicholas P. Burnett, Eric J. Armstrong, Rosemary Romero, Charlotte C. Runzel, Richelle L. Tanner

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Wounds can result in large amounts of tissue breaking away from macroalgae, amplifying the damage initially caused by herbivores. Herbivores that commonly wound macroalgae often occur over only a portion of a macroalga’s lifespan or geographic range. However, we know little about the influence of these periodic or regional occurrences of herbivores on the large-scale seasonal and geographical patterns of macroalgal morphology. We used the intertidal kelp Egregia menziesii to investigate how the kelp’s morphology and the prevalence of two prominent kelp-wounding herbivores …

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Blue Carbon In South Florida's Mangroves: The Role Of Large Roots And Necromass, Zoë I. Shribman Sep 2021

Blue Carbon In South Florida's Mangroves: The Role Of Large Roots And Necromass, Zoë I. Shribman

LSU Master's Theses

Blue carbon sequestration and storage in mangroves largely result from belowground biomass allocation in response to flooded anaerobic soil conditions and nutrient availability. Biomass allocation to belowground roots is a major driver of mangrove soil formation and organic matter accumulation leading to blue carbon storage potential. Belowground biomass sampling in mangroves is labor intensive, limiting data availability on biomass stocks, particularly for large roots (>20 mm diameter) and necromass (dead roots). The mangrove nutrient model (NUMAN) uses mostly literature values to parameterize a soil cohort approach to simulate depth distribution of root mass and organic carbon concentration. We evaluated …

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Otoliths Of South-Western Australian Fish: A Photographic Catalogue, Chris Dowling, Kim Smith, Elaine Lek, Joshua Brown Sep 2021

Otoliths Of South-Western Australian Fish: A Photographic Catalogue, Chris Dowling, Kim Smith, Elaine Lek, Joshua Brown

Fisheries Research Reports

Due to the species-specific nature of otoliths and given they are often the only part of the fish preserved when fish die, otolith catalogues can be used in numerous applications, such as diet studies in fish eating animals, including pinnipeds, fish and sea birds; archaeological purposes such as reconstructing indigenous people’s diets from otoliths found in middens or evolutionary history of fish species by comparing fossilized otoliths. Given the unique mixture of subtropical and temperate fish, including many endemic species that occur off the southwest corner of WA having a catalogue for this area is extremely important for people working …

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