The Economic Value Of Sea Otters And Recreational Tourism In A California Estuary,
2023
Monterey Bay Aquarium
The Economic Value Of Sea Otters And Recreational Tourism In A California Estuary, Jessica A. Fujii, Charles S. Colgan, Anthony Castelletto, Michelle M. Staedler, Amy G. Wolfrum, Kyle S. Van Houtan
Journal of Ocean and Coastal Economics
The recovery of marine megafauna can lead to improved ecosystem function and services, but not all stakeholders may benefit equally. Quantifying the local economic value of a species’ presence may appeal to broader range of stakeholders when developing conservation strategies. This study aims to examine the economic effect recreational activities can have on a local region, and to determine what role the presence of southern sea otters (Enhydra lutris nereis) had on the value visitors placed on the visit and the area’s preservation. We surveyed visitors to Elkhorn Slough, a small estuary in California known for diverse wildlife, …
On The Edge Of The "Er-Ocean" State,
2023
Rhode Island School of Design
On The Edge Of The "Er-Ocean" State, Mariesa Travers
Masters Theses
This thesis will explore how hard coastal infrastructure methods can be redesigned by softening the coastal edge to support the ecosystem and enhance public access to the beach. By referencing and arguing against techniques used by the U.S. Army Corps of Engineers (USACE) as a solution to deal with coastal erosion, this process will propose a regenerated design system. Through a series of material experiments, this research works with natural processes and flows, to create transitory systems that erode and ebb with the coast.
Spatial Variation And Antecedent Sea Surface Temperature Conditions Influence Hawaiian Intertidal Community Structure,
2023
University of Hawaii, Hilo
Spatial Variation And Antecedent Sea Surface Temperature Conditions Influence Hawaiian Intertidal Community Structure, Rebecca J. Ward, T. Erin Cox, Anuschka Faucci, Florybeth Flores La Valle, Joanna Philippoff, Jessica L. B. Shaefer, Ian M. Ware, Matthew L. Knope
All Faculty Open Access Publications
Global sea surface temperatures (SSTs) are increasing, and in Hawaiʻi, rates of ocean warming are projected to double by the end of the 21st century. However, current nearshore warming trends and their possible impacts on intertidal communities are not well understood. This study represents the first investigation into the possible effects of rising SST on intertidal algal and invertebrate communities across the Main Hawaiian Islands (MHI). By utilizing citizen-science data coupled with high-resolution, daily SST satellite measurements from 12 intertidal sites across the MHI from 2004–2019, the response of intertidal algal and invertebrate abundance and community diversity to changes in …
Heightened Heart Rate But Similar Flight Responses To Evolved Versus Recent Predators In An Arctic Seabird,
2023
Great Lakes Institute for Environmental Research
Heightened Heart Rate But Similar Flight Responses To Evolved Versus Recent Predators In An Arctic Seabird, Erica A. Geldart, Oliver P. Love, H. Grant Gilchrist, Andrew F. Barnas, Christopher M. Harris, Christina A.D. Semeniuk
Great Lakes Institute for Environmental Research Publications
Predator-prey dynamics in the Arctic are being altered with changing sea ice phenology. The increasing frequency of predation on colonial nesting seabirds and their eggs by the polar bear (Ursus maritimus) is a consequence of bears shifting to terrestrial food resources through a shortened seal-hunting season. We examined antipredator responses in a colony of nesting Common Eiders (Somateria mollissima) on East Bay Island, Nunavut, Canada, which is exposed to established nest predators, such as arctic fox (Vulpes lagopus), but also to recent increases in polar bear nest predation due to the bears’ lost on-ice hunting opportunities. Given eiders’ limited eco-evolutionary …
Effects Of Intertidal Position On The Response To Oxygen And Desiccation Stress In The Common Acorn Barnacle, Balanus Glandula,
2023
California Polytechnic State University, San Luis Obispo
Effects Of Intertidal Position On The Response To Oxygen And Desiccation Stress In The Common Acorn Barnacle, Balanus Glandula, Megan M. Dotterweich
Master's Theses
Sessile invertebrates in the rocky intertidal experience intermittent periods of air exposure due to tidal flux, presenting risks of temperature extremes, hypoxia, nutrient limitation, and most dangerously, desiccation. Microscale variation in severity and frequency of these risks is widely dependent on vertical position within the intertidal zone. Common acorn barnacles (Balanus glandula) have a wide vertical distribution in the intertidal, creating large differences in microhabitat between the highest and lowest individuals in the population. This study set out to explore whether tidal position dependent differences exist in the response to oxygen and desiccation stress in B. glandula. …
Reproduction, Early Development, And Larval Rearing Of The Climbing Perch Anabas Testudineus (Teleostei: Anabantidae) In Captivity,
2023
Aquaculture Department, Southeast Asian Fisheries Development Center, Binangonan Freshwater Station, Binangonan, Rizal 1940, Philippines
Reproduction, Early Development, And Larval Rearing Of The Climbing Perch Anabas Testudineus (Teleostei: Anabantidae) In Captivity, Frolan A. Aya, Reylan C. Gutierrez, Luis Maria B. Garcia
The Philippine Agricultural Scientist
Induced spawning, early development, and larval rearing of the climbing perch Anabas testudineus were examined under captive conditions. Five female climbing perch [125.33 ± 3.27 mm SL; 70.67 ± 5.59 g BW] were paired with apparently mature males (108.50 ± 3.97 mm SL; 39.27 ± 4.70 g BW) and induced to spawn with 5,000 IU human chorionic gonadotropin (hCG) + 0.5 mL Ovaprim kg BW-1. All hCG + Ovaprim-injected fish spawned 9 – 11 h after hormone administration but saline-injected fish (control group) failed to spawn. Mean egg production per female, fertilization and hatching rates, and larval production …
Behavior Changes And Lc50 Of Dried Garlic (Allium Sativum) Acute Toxicity In Nile Tilapia (Oreochromis Niloticus) Juvenile [Research Note],
2023
Aquaculture Department, Southeast Asian Fisheries Development Center (SEAFDEC/AQD), 5021 Tigbauan, Iloilo, Philippines
Behavior Changes And Lc50 Of Dried Garlic (Allium Sativum) Acute Toxicity In Nile Tilapia (Oreochromis Niloticus) Juvenile [Research Note], Gregoria Erazo Pagador, Haydee Rose Dumaran Paciente, Blan Jericho Caloyloy
The Philippine Agricultural Scientist
Plant-based compounds are emerging substitutes for chemical treatments in aquaculture since they are known to cause less harm to both the environment and its organisms. Garlic (Allium sativum) is a popular herb that has a broad range of uses, especially in the control and treatment of bacterial and parasitic diseases. However, its toxicity to tilapia is not well-studied. Hence, this study was conducted to test the toxicity levels of garlic powder in juvenile Nile tilapia (Oreochromis niloticus) by determining the cumulative mortality and median lethal concentration (LC50). Test fish were exposed through immersion in …
Recreational Fishing Location Guide,
2023
Department of Primary Industries and Regional Development, Western Australia
Recreational Fishing Location Guide, Department Of Primary Industries And Regional Development, Western Australia
Fisheries occasional publications
This guide has been developed to help you identify the fishing locations that you may visit. The purpose of this guide is to enhance consistent and accurate identification of fishing locations and block numbers within each Bioregion. If you are unsure about a particular location, please discuss it with a representative of the Department of Primary Industries and Regional Development, Western Australia.
Marginal Reef Systems: Resilience In A Rapidly Changing World,
2023
University of Queensland; Curtin University
Marginal Reef Systems: Resilience In A Rapidly Changing World, Nicola K. Browne, Andrew G. Bauman
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Practical Solutions To The Invasion Of Lionfish In Utila, Honduras: Science, Education, Food, And Jewelry,
2023
University of San Diego
Practical Solutions To The Invasion Of Lionfish In Utila, Honduras: Science, Education, Food, And Jewelry, Carolyn Corley
Undergraduate Honors Theses
Lionfish (Pterois sp.) are invasive species capable of devastating coral reef ecosystems due to their lack of predators, large appetites, generalist diet, high fecundity, and rapid spawning rates. As lionfish have expanded their distribution across the Caribbean, many conservation groups have taken it upon themselves to systematically remove these predators from environments where they are threatening native species. However, few have involved the community the way I observed while interning with the Whale Shark and Oceanic Research Center in Utila, Honduras. Protecting coral reefs is extremely important, especially in small communities like Utila, where the majority of people’s …
Does Artificial Lighting Cause Sea Turtle Hatchling Disorientations?,
2023
Providence College
Does Artificial Lighting Cause Sea Turtle Hatchling Disorientations?, Kate Hickey
Biology Student Scholarship
Sea turtle hatchlings run into obstacles from the minute they emerge from their shell. They have a 1 in 1,000 survival rate and new obstacles are on the horizon. Coastal development is increasing and is not planning on slowing down. It supports and funds tourism, but has some negative implications on the wildlife that uses this area, like sea turtles. A particular problem with development is the artificial lighting it emits which is effecting sea turtles nesting. When the hatchlings emerge from the nest, they use the horizon and moon to guide them in the direction of the sea. The …
Interactions Between Marine Megafauna And Plastic Pollution In Southeast Asia,
2023
University of Exeter
Interactions Between Marine Megafauna And Plastic Pollution In Southeast Asia, Lucy C.M. Omeyer, Emily Duncan, Neil Angelo S. Abreo, Jo Marie V. Acebes, Lea A. Angsinco-Jimenez, Sabiqah T. Anuar, Lemnuel V. Aragones, Gonzalo Araujo, Luis R. Carrasco, Emilyn Q. Espiritu
Environmental Science Faculty Publications
Southeast (SE) Asia is a highly biodiverse region, yet it is also estimated to cumulatively contribute a third of the total global marine plastic pollution. This threat is known to have adverse impacts on marine megafauna, however, understanding of its impacts has recently been highlighted as a priority for research in the region. To address this knowledge gap, a structured literature review was conducted for species of cartilaginous fishes, marine mammals, marine reptiles, and seabirds present in SE Asia, collating cases on a global scale to allow for comparison, coupled with a regional expert elicitation to gather additional published and …
The Effect Of Water Temperature On Tiger Shark Location,
2023
Providence College
The Effect Of Water Temperature On Tiger Shark Location, Philip Gelso
Biology Student Scholarship
The tiger shark is a keystone species in its ecosystem. As an apex predator, the tiger shark keeps the entire ecosystem in balance such as maintaining seagrass and coral reef habitats. The rise of ocean surface temperatures have become an issue over the past decades due to the increase in energy from the sun trapped by greenhouse grasses. This change in ocean surface temperature can have detrimental impacts on the ocean environment and the life cycles of many species including the tiger shark. Therefore, this project evaluates the change in location of tiger sharks in relation to water temperature.BIO …
Estimation Of Mortality Rates For The Gulf Menhaden Stock And Reference Point Implementation For The Fishery,
2023
The University of Southern Mississippi
Estimation Of Mortality Rates For The Gulf Menhaden Stock And Reference Point Implementation For The Fishery, Catherine Wilhelm
Master's Theses
The Gulf menhaden stock is the target of a large commercial fishery in the Gulf of Mexico. To address the needs of both the stock and fishery, I performed two studies. I first addressed the natural mortality rates currently used in the Gulf menhaden stock assessment. To update these rates, I used data from a tagging study conducted from 1970 to 1988. Adult and juvenile menhaden were tagged, released, and recovered in fish processing plants. To evaluate the data, I built a Bayesian model using the negative binomial distribution to estimate natural mortality, catchability, and the overdispersion factor parameters. I …
A Mathematical Model For Wound Healing In Reef-Building Coral Pocillopora Damicornis,
2023
Virginia Commonwealth University
A Mathematical Model For Wound Healing In Reef-Building Coral Pocillopora Damicornis, Quintessa Hay, Luke Gardner, Eunice Pak, Liza M. Roger, Rebecca A. Segal, Anna Shaw, Nastassja A. Lewinski, Angela M. Reynolds
Biology and Medicine Through Mathematics Conference
No abstract provided.
Connecting Social And Ecological Systems In Small-Scale Fisheries In The Philippines,
2023
University of Southern Mississippi
Connecting Social And Ecological Systems In Small-Scale Fisheries In The Philippines, Sara Eisler Marriott
Dissertations
Nearly 50% of all marine fish capture in the Philippines is from artisanal fisheries, most of which is un- or under-reported. As in many emerging nations around the world, the Philippines cannot fully address overfishing by managing only half of the catch that comes from commercial fisheries. Marine reserves are a popular governance strategy for conservation and of growing interest for fisheries management. Many marine reserves in the Philippines, however, are not considered effective. In 2014, Rare, an international NGO, implemented a community-based management program to increase the effectiveness of the marine reserves, and while it found biomass increased, there …
Du Undergraduate Showcase: Research, Scholarship, And Creative Works,
2023
University of Denver
Du Undergraduate Showcase: Research, Scholarship, And Creative Works, Caitlyn Aldersea, Justin Bravo, Sam Allen, Anna Block, Connor Block, Emma Buechler, Maria De Los Angeles Bustillos, Arianna Carlson, William Christensen, Olivia Kachulis, Noah Craver, Kate Dillon, Muskan Fatima, Angel Fernandes, Emma Finch, Colleen Cassidy, Amy Fishman, Andrea Francis, Stacia Fritz, Simran Gill, Emma Gries, Rylie Hansen, Shannon Powers, Jacqueline Martinez, Zachary Harker, Ashley Hasty, Mykaela Tanino-Springsteen, Kathleen Hopps, Adelaide Kerenick, Colin Kleckner, Ci Koehring, Elijah Kruger, Braden Krumholz, Maddie Leake, Lyneé Alves, Seraphina Loukas, Yatzari Lozano Vazquez, Haley Maki, Emily Martinez, Sierra Mckinney, Mykaela Tanino-Springsteen, Audrey Mitchell, Kipling Newman, Audrey Ng, Megan Lucyshyn, Andrew Nguyen, Stevie Ostman, Casandra Pearson, Alexandra Penney, Julia Gielczynski, Tyler Ball, Anna Rini, Christina Rorres, Simon Ruland, Helayna Schafer, Emma Sellers, Sarah Schuller, Claire Shaver, Kevin Summers, Isabella Shaw, Madison Sinar, Claudia Pena, Apshara Siwakoti, Carter Sorensen, Madi Sousa, Anna Sparling, Alexandra Revier, Brandon Thierry, Dylan Tyree, Maggie Williams, Lauren Wols
DU Undergraduate Research Journal Archive
DU Undergraduate Showcase: Research, Scholarship, and Creative Works
A Deeper Understanding Of Noise Effects On Cetaceans,
2023
Stephen F Austin State University
A Deeper Understanding Of Noise Effects On Cetaceans, Jason N. Bruck
Faculty Publications
Recent research with cetaceans under human care is illuminating just how dolphins are affected by human-made noise both in terms of their ability to cooperate as well as their ability to habituate to such noise. This research is providing granular detail to regulators assessing the problems associated with anthropogenic effects and is highlighting a role for behavior/cognition research in conservation.
Ecomorphology Of A Predatory Deep-Sea Fish Family: Does Trophic Specialization Drive Hyperspeciation?,
2023
Nova Southeastern University
Ecomorphology Of A Predatory Deep-Sea Fish Family: Does Trophic Specialization Drive Hyperspeciation?, Ryan P. Mcgonagle, David Kerstetter, Danté Fenolio, Tracey Sutton
Marine & Environmental Sciences Faculty Articles
Two of the main drivers of speciation among aquatic vertebrates are physical isolation (e.g., lakes and streams) and micro-niche availability (e.g., tropical reefs). In both regards, the mesopelagic domain of the open ocean, Earth’s second largest cumulative ecosystem (behind only the bathypelagic domain), would seem retardant. Ocean circulation makes isolation rare on both contemporary and geological time/space scales, and the lack of substrate precludes stable micro-niches. Paradoxically, some pelagic taxa demonstrate much higher-than-expected species richness on regional scales. A prime example is the dragonfish family Stomiidae, the most speciose family of mesopelagic fishes, owing largely to the subfamily Melanostomiinae (scaleless …
Rapidly Changing Range Limits In A Warming World: Critical Data Limitations And Knowledge Gaps For Advancing Understanding Of Mangrove Range Dynamics In The Southeastern Usa,
2023
The University of Texas Rio Grande Valley
Rapidly Changing Range Limits In A Warming World: Critical Data Limitations And Knowledge Gaps For Advancing Understanding Of Mangrove Range Dynamics In The Southeastern Usa, Rémi Bardou, Michael J. Osland, Steven Scyphers, Christine Shepard, Karen E. Aerni, Jahson B. Alemu I, Robert Crimian, Richard H. Day, Nicholas M. Enwright, Christopher A. Gabler
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
Climate change is altering species’ range limits and transforming ecosystems. For example, warming temperatures are leading to the range expansion of tropical, cold-sensitive species at the expense of their cold-tolerant counterparts. In some temperate and subtropical coastal wetlands, warming winters are enabling mangrove forest encroachment into salt marsh, which is a major regime shift that has significant ecological and societal ramifications. Here, we synthesized existing data and expert knowledge to assess the distribution of mangroves near rapidly changing range limits in the southeastern USA. We used expert elicitation to identify data limitations and highlight knowledge gaps for advancing understanding of …
