Publications & Contributions

A comprehensive database of Project Seahorse outputs

25 Results for: Thesis

The limitations of bans when conserving species that are incidentally caught : a case study of India’s seahorses

Bans on exploitation and trade are increasingly being used in wildlife conservation. However, their effects on small, incidentally caught marine fishes are rarely examined. For my thesis, I evaluate the impact of one such paired ban in India, across different spatial scales, on the conservation of seahorse species and on the fishers who depend on … Read more The limitations of bans when conserving species that are incidentally caught : a case study of India’s seahorses

Accounting for the other 95% : conservation and assessment of data limited marine invertebrates in the Central Philippines

Intense human pressures require that conservation be nimble and action-oriented even in the face of significant data limitations. In the ocean, invertebrates comprise over 95% of animal biodiversity and are a major component of fisheries catch. Yet, exceedingly little effort is dedicated to supporting conservation of these taxa. The goal of this thesis is to … Read more Accounting for the other 95% : conservation and assessment of data limited marine invertebrates in the Central Philippines

Conservation prioritization and ecology of data-poor marine species under human pressures

Securing a healthy and biodiverse ocean is vital to our human wellbeing. However, marine conservation is challenging, especially for data-poor species, whose habitats and threats are understudied. My dissertation explored how to address such challenges at two large spatial scales (in China and globally), with a focus on the little studied seahorses (Hippocampus spp.). In … Read more Conservation prioritization and ecology of data-poor marine species under human pressures

Habitat use by seahorses and pipefishes (family Syngnathidae) in Biscayne National Park, a marine protected area in southeastern Florida, USA.

Seahorses and their relatives, the pipefishes, (family Syngnathidae) are a group of charismatic marine fishes found in coastal habitats including estuaries, mangroves, seagrasses and coral reefs. Knowledge of habitat use by species of conservation concern is important when evaluating the relative contribution of a marine protected area to recovery efforts. This study presents the results … Read more Habitat use by seahorses and pipefishes (family Syngnathidae) in Biscayne National Park, a marine protected area in southeastern Florida, USA.

Costs and benefits of changing sampling methods in long-term monitoring of marine protected areas

To confirm their effectiveness, long-term monitoring of marine protected areas (MPAs) is critical. Such longitudinal sampling can, however, pose problems of methodology, particularly as more preferred tools may evolve over time. My research sought to understand how two commonly used methods, line intercept transect (LIT) and photoquadrat (PQ), which were used sequentially in MPA monitoring, … Read more Costs and benefits of changing sampling methods in long-term monitoring of marine protected areas

Fisheries and trade of species listed on CITES Appendix II, with a focus on seahorses

International trade regulations are important tools to ensure sustainable use of wildlife, but their effects on marine fishes are rarely examined. In this thesis, I evaluated patterns and changes in international trade of marine fishes whose exports are regulated under the Convention on the International Trade in Endangered Species of Wild Flora and Fauna (CITES). … Read more Fisheries and trade of species listed on CITES Appendix II, with a focus on seahorses

How is a family of sedentary marine fishes shaped by its habitats, prey, and predators?

Overall, this thesis expands on our ecological understanding of a group of biologically diverse marine fishes by investigating how they are shaped by their habitats, prey, and predators. In my first data chapter, I used the seahorse Hippocampus whitei as a case study for investigating the ecological correlates of syngnathid abundance and distributions. Expanding on … Read more How is a family of sedentary marine fishes shaped by its habitats, prey, and predators?

Quantifying the development of small-scale fisheries on coral reefs, and their impact on habitats

Fishing provides an essential source of protein for half a billion people, but many fisheries damage ocean ecosystems including coral reefs. I demonstrated that small-scale fisheries in the Philippines shifted from benign to damaging through several mechanisms and had long-term effects on corals. Fishing effort increased 2.5-fold overall, and over 20-fold in some locations. Increases … Read more Quantifying the development of small-scale fisheries on coral reefs, and their impact on habitats

Developing conservation action for data-poor species using seahorses as a case study

In this thesis I explore how to develop conservation action strategically for data-poor marine fishes. The dearth of information about populations, habitats and threats for many marine fishes makes it difficult to know how or where to initiate conservation strategies. My PhD research explores what type of information is essential for conservation management, and how … Read more Developing conservation action for data-poor species using seahorses as a case study

Diversification and depletion in Vietnamese seahorse fisheries

The development of effective evidence-based management is limited by a lack of long-term records for many vulnerable marine species that are caught in small-scale fisheries. To address this data gap, I studied a small-scale fishery in southern Vietnam with a focus on seahorses (Hippocampus spp.), globally traded, cryptic fishes that are notably vulnerable to overexploitation. … Read more Diversification and depletion in Vietnamese seahorse fisheries