Marine Biology Commons^™

Pluredecadal Patterns Of The Harmful Algal Blooms In The Highly Dynamic Marine Ecosystem Of Alexandria (Egypt): A Review, Samia K. Mikhail, Wagdy Labib

Blue Economy

The long-term study of phytoplankton variability in the coastal waters of Alexandria encounters significant challenges due to several factors such as inconsistency in sampling efforts conducted across various spatial and temporal scales, limitations of short-term monitoring methods, rapid urbanization and economic expansion, and their diverse eco-environmental impacts. The article analyzes a quantitative and qualitative dataset on algal bloom variabilities in Alexandria marine ecosystem from 1992 to 2023, highlighting changes in bloom patterns and trends such as annual cycles, short-term trends, rapid turnover rates of bloom structures, recurrent blooms of various classes, escalation in the frequency and magnitude, unusual episodic events, …

Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Nicholas Burchett, David Kerstetter, Derek Burkholder

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

No abstract provided.

Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Neurocranium, Michelle Bassali, David Kerstetter, Ema Nagel

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

No abstract provided.

Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Michelle Bassali, David Kerstetter, Ema Nagel

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

No abstract provided.

Metabolic Transitions In Embryos Of Artemia Franciscana: Regulation And Consequences For Oxidative Stress, Daniel Anthony Arabie

LSU Doctoral Dissertations

Embryos of Artemia franciscana survive harsh conditions in diapause and anoxia-induced quiescence for years by undergoing deep metabolic transitions. I investigated the relationship between phosphorylation of pyruvate dehydrogenase (PDH) and carbon flux to the tricarboxylic acid (TCA) cycle during metabolic depression. The difference in catalytic activity of the PDH complex (PDC) in maximally phosphorylated and dephosphorylated samples was 16.5-fold. Western blot analysis confirmed the changes in phosphorylation of PDH. Analysis of PDH expression in diapause and post-diapause embryos via phospho-PDH showed no significant differences. Investigation of post-diapause embryos under anoxia showed that phosphorylation of PDH decreased and activated the enzyme. …

Fisheries Management Paper No.286: Western Australian Octopus Resource Harvest Strategy, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Management Papers

Harvest strategies for Western Australia’s (WA) aquatic resources are formal documents developed to support decision-making processes that ensure the outcomes are consistent with the principles of Ecologically Sustainable Development (ESD; Fletcher 2002a) and Ecosystem Based Fisheries Management (EBFM; Fletcher et al. 2012). Harvest strategies are a key component of all contemporary fishery management systems and a requirement for certification under the Marine Stewardship Council (MSC). The objectives of ESD are reflected in the objectives of the Fish Resources Management Act 1994 (FRMA).

This Octopus Resource Harvest Strategy (Harvest Strategy) has been developed and revised in line with the Harvest Strategy …

Wrack Lines Spring-Summer 2025, Volume 25, Number 1, Megan Bard, Ronald Goldberg, Clayton Mcgoldrick, Judy Benson

Wrack Lines

Spring-Summer 2025 issue of CT Sea Grant's biannual magazine focuses on the theme of, "Finding their niche: Unique ways of serving people and the environment," with profiles of six standouts in various environmental fields.

Female Beluga Behavior During Breeding Season - It's All About The Males, Alondra-Sophia Martinez, Heather Manitzas Hill, Katie Kolodziej

Posters - 2025

This poster was created for the 5th annual Research Showcase. From the poster:

The current study examined the behavior of adult female belugas during courtship/breeding.

Seasonal Changes In Gene Expression Of The Three Estrogen Receptor Subtypes In The Atlantic Croaker, Micropogonias Undulatus, Elena Mares

Posters - 2025

Vertebrates have multiple estrogen receptor (ER) subtypes which facilitate transcriptional activity of genes when activated by estrogenic ligands. Teleost fish have 3 distinct estrogen receptor subtypes, including ERα, ERβ, and a unique type, ERγ. Each subtype has a different binding affinities to many estrogenic compounds, but their subsequent transcriptional regulatory mechanisms are not wellknown1. The focused species of the project is Micropogonias undulatus, the Atlantic Croaker.

Is Less More, Or More Better? Behavioral Insights From Bottlenose Dolphins During Dolphin Interaction Programs, Megan E. Davis, Alicia Virthe, Heather Manitzas Hill, Kathleen Dudzinski, Michelle Samm, Buck Lyman, Kelly Flaherty Clark, Todd Robeck

Posters - 2025

This poster was created for the 5th annual Research Showcase. From the poster:

Using video recordings collected during randomly selected human-dolphin interaction programs (2022-2023), 19 target dolphins were assessed for their behavioral repertoire, correct and incorrect responses to trainer/guest-given cues, and the total number of unique requested behaviors.

Obstacles And Opportunities In Marine Mammals Care And Welfare: Insights From Trainers, Alicia Virthe, Heather Manitzas Hill, Sabrina Brando

Posters - 2025

This poster was created for the 5th annual Research Showcase. From the poster:

The aims of the study included:

Identifying obstacles faced by caregivers

Exploring beliefs hindering the promotion of animal care and welfare

Highlighting the opportunities that caregivers perceive to maintain and enhance animal welfare and care

Do Otters Remember What They Solved? Manyotters - Collaborative Science, Manyotters, Heather Manitzas Hill, Deirdre Yeater, Caroline M. Delong, Catina Wright, Emily Langdon, Lisa Halstead

Posters - 2025

This poster was created for the 5th annual Research Showcase. From the Poster:

The ManyOtters group seeks to promote studies with larger sample sizes and a variety of species of otters, while developing a collaborative network of scientists. ...

Our initial project focuses on long term memory in otters.

For more information about ManyOtters please visit

https://manyotters.github.io/

Many Otters Project - Coding Analysis Of Otter Behavior With Foraged Puzzles, Isaiah Charles, Andres Vega

Posters - 2025

The study of long-term memory and the cognitive abilities of otters is not extensively documented. This research consisted of the use of foraging puzzles, which are different containers with food inside such as fish, squid, and oysters. This research project, named ManyOtters, takes inspiration from the foraging puzzle techniques exhibited in separate studies (e.g., Saliveros et al., 2022; Ladds et al. 2017). Based on the studies, foraging puzzles have shown to draw engagement for several otter species. The species focused on in this study were Asian small-clawed otters (Aonyx cinereus) and African spotted-necked otters (Hydrictis maculicollis) housed at SeaWorld San …

Nitrogen Processes Within Tropical Mangroves In Australia, M. F. Adame, N. Iram, J. N. Gamboa-Cutz, P. Masque

Research outputs 2022 to 2026

Coastal wetlands have long been identified as ecosystems that can ameliorate N inputs into the ocean. The processes associated with N uptake, transformation, and losses are relatively well understood for temperate wetlands; however, information on tropical wetlands is scarce. In this study, we conducted a whole ecosystem approach to measure N processes within tropical mangroves in the Moresby estuary in northeast Australia. We measured N stocks (trees and soils), inputs from sedimentation, fixation, and accumulation as woody biomass, and outputs through denitrification, anammox, and soil respiration (N2O emissions). Potential denitrification was detected along anammox (average, min-max) at 883 (485–1,450) gN …

Drivers Of Seagrass Decline In Perth Waters And Actions To Halt Decline, Kathryn Mcmahon, Simone Strydom, Natasha Dunham, John Whale, Chanelle Webster, Nicole Said

Research outputs 2022 to 2026

Executive summary:

• Experts from consulting, government and research including individuals with up to 50 years’ experience in Perth coastal waters discussed potential drivers of seagrass decline based on trends from the long-term seagrass monitoring program in Cockburn and Warnbro Sound and Owen Anchorage (27 sites from 2003-2020) and their personal knowledge and expertise.

• The collation of seagrass monitoring data demonstrated that of the 27 sites monitored, only six had a significant decline over time, and these sites were both within and outside of Cockburn Sound (Warnbro Sound, Southern Flats, Jervoise Bay, Garden Island and Woodman Point).

• For …

Marine Heatwave Conditions In Western Australia Marine Waters - 26th March 2025, Department Of Primary Industries And Regional Development, Western Australia

Marine Heatwave Notification Reports

Marine heatwave (MHW) conditions across the state have persisted. Category 1 – Moderate conditions continue for the Gascoyne and South Coast Bioregions. The North Coast Bioregion has returned to Category 1 – Moderate conditions. The West Coast Bioregion remains warm but is not categorised as experiencing MHW conditions.

Western Australia’S Marine Heatwave Update - 27 March 2025, Department Of Primary Industries And Regional Development, Western Australia, Arani Chandrapavan

Marine Heatwave Notification Reports

No abstract provided.

Recommendations For Strengthening Blue Carbon Science, Martin Dahl, Paul S. Lavery, Inés Mazarrasa, Jimena Samper-Villarreal, Maria F. Adame, Stephen Crooks, Carlos M. Duarte, Daniel A. Friess, Dorte Krause-Jensen, Carmen Leiva-Dueñas, Catherine E. Lovelock, Peter I. Macreadie, Pere Masqué, Miguel Angel Mateo, Oscar Serrano

Research outputs 2022 to 2026

Blue carbon (BC) habitats (e.g., mangroves, tidal marshes, and seagrasses) are important CO2 sinks but are among the most threatened ecosystems on Earth. Substantial research over the last decade has quantified BC to evaluate the climate benefits associated with habitat conservation and restoration. However, the exponential growth in BC science has resulted in differing approaches that hinder comparison across studies and increase uncertainty. Here, we synthesized existing data to depict the range of uncertainty associated to different BC methodologies and argue that cumulative biases linked to multiple methodologies can result in BC estimates differing by up to 10-fold. We identified …

Atlantic Sharpnose (Rhizoprionodon Terraenovae) Jaw, Rileigh Gonzalez, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

No abstract provided.

Linking Water Quality And Climate Change To Long-Term Trends In Species Abundance In Norwalk Harbor, Viktoria Savatorova, Aidan Kieft, Nicole C. Spiller, Kasey Burns

Spora: A Journal of Biomathematics

This study examines the effects of environmental changes on fish populations in Norwalk Harbor, focusing on winter flounder (Pseudopleuronectes americanus), cunner (Tautogolabrus adspersus), northern pipefish (Syngnathus fuscus), and naked goby (Gobiosoma bosci) as examples of species responding to climate-related shifts. We analyze how water temperature, salinity, and dissolved oxygen correlate with fish abundance. To assess statistically significant differences in catch per unit effort (CPUE) across harbor regions, we applied the Kruskal-Wallis test followed by Dunn's post-hoc test. Seasonal variations in CPUE were examined by comparing monthly catch data for each species. K-means …