A5037116623- Ocean Acidification Effects and Responses
- Marine Bivalve and Aquaculture Studies
- Marine and coastal plant biology
- Coral and Marine Ecosystems Studies
- Marine Biology and Ecology Research
- Marine Biology and Environmental Chemistry
- Marine and fisheries research
- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Echinoderm biology and ecology
- Physiological and biochemical adaptations
- Identification and Quantification in Food
- Environmental Toxicology and Ecotoxicology
- Marine and coastal ecosystems
- Marine Ecology and Invasive Species
- Fish Ecology and Management Studies
- Polar Research and Ecology
- Isotope Analysis in Ecology
- Marine animal studies overview
- Biocrusts and Microbial Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Parasite Biology and Host Interactions
- Spaceflight effects on biology
- Algal biology and biofuel production
- Crustacean biology and ecology
University of Otago
2016-2025
University of Washington
2000-2001
While in recent years environmental DNA (eDNA) metabarcoding surveys have shown great promise as an alternative monitoring method, the integration into existing marine programs may be confounded by dispersal of eDNA signal. Currents and tidal influences could transport over distances, inducing false-positive species detection, leading to inaccurate biodiversity assessments and, ultimately, mismanagement environments. In this study, we determined ability distinguish localized signals obtained...
Abstract Coral reefs face a crisis due to local and global anthropogenic stressors. A large proportion of the ~50% coral loss on Great Barrier Reef has been attributed outbreaks crown-of-thorns-seastar (COTS). widely assumed cause primary COTS is increased larval survivorship higher food availability, linked with runoff . Our experiment using range algal concentrations at three temperatures representing present day average predicted future increases, demonstrated strong influence...
Significance Seawater elemental composition, namely Mg:Ca and Sr:Ca ratios are widely used in marine sciences. Our new single-laboratory global dataset, combined with past data of seawater ratios, suggests that modern ocean variability is significant across different environments, being similar to the changes during Neogene Period (20 Ma). Because there large we cannot assume secular derived from fossilized taxa varied ecological niches diverse ecosystems provide an unbiased representation...
Abstract Background The utility of environmental DNA (eDNA) metabarcoding surveys to accurately detect species depends on the degree dispersal. Multiple marine studies have observed only minimal eDNA transport by horizontal water movement across small spatial scales, leading conclusion that spatially specific signals resemble in‐field assemblages along a axis. Marine communities, however, are also structured vertically according depth. In environments displaying permanent stratification,...
DNA extraction from environmental samples (environmental DNA; eDNA) for metabarcoding-based biodiversity studies is gaining popularity as a noninvasive, time-efficient, and cost-effective monitoring tool. The potential benefits are promising marine conservation, the biome frequently under-surveyed due to its inaccessibility consequent high costs involved. With increasing numbers of eDNA-related publications have come wide array capture methods. Without visual species confirmation,...
Aquatic environmental DNA (eDNA) surveys are transforming how marine ecosystems monitored. The time-consuming preprocessing step of active filtration, however, remains a bottleneck. Hence, new approaches that eliminate the need for filtration required. Filter-feeding invertebrates have been proven to collect eDNA, but side-by-side comparative studies investigate similarity between aquatic and filter-feeder eDNA signals essential. Here, we investigated differences among four sources (water;...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 180:197-211 (1999) - doi:10.3354/meps180197 In situ estimates of larval development and mortality in New Zealand sea urchin Evechinus chloroticus (Echinodermata: Echinoidea) Miles D. Lamare*, Michael F. Barker Department Science, University Otago, PO Box 56, Dunedin, *Present address: Friday Harbor...
Stenothermal polar benthic marine invertebrates are highly sensitive to environmental perturbations but little is known about potential synergistic effects of concurrent ocean warming and acidification on development their embryos larvae. We examined the these stressors calcifying larval stage in Antarctic sea urchin Sterechinus neumayeri reared present future (2100+) conditions from fertilization. Embryos were 2 temperature (ambient: -1.0 °C, + °C : 1.0 °C) 3 pH 8.0, -0.2-0.4 units:...
Coral reefs are marine biodiversity hotspots, but their existence is threatened by global change and local pressures such as land-runoff overfishing. Population explosions of coral-eating crown thorns sea stars (COTS) a major contributor to recent decline in coral cover on the Great Barrier Reef. Here, we investigate how projected near-future ocean acidification (OA) conditions can affect early life history stages COTS, investigating important milestones including sperm motility,...
Abstract Coral loss through consumption by corallivorous crown-of-thorns seastars (CoTS, Acanthaster spp. ) is a major contributor to the coral reef crisis in Indo-Pacific region. The fourth wave of cf. solaris outbreaks since 1960s started around 2010 on Australia’s Great Barrier Reef. Ecological monitoring failed detect early outbreak stages, thus preventing timely intervention. Here, we develop digital droplet PCR (ddPCR)-based method environmental DNA (eDNA) CoTS 2-l water samples that...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 473:235-246 (2013) - DOI: https://doi.org/10.3354/meps10058 Effects of ocean warming and acidification on embryos non-calcifying larvae invasive sea star Patiriella regularis Maria Byrne1,*, Gonzalez-Bernat2, Steve Doo3, Shawna Foo3, Natalie Soars3, Miles Lamare2 1Schools Medical Biological Sciences,...
To understand the role of sea temperature on population biology crown-of-thorns star Acanthaster planci, thermal window for embryonic and larval development was investigated. In two experiments, response embryos larvae across 12 temperatures from 19.4 to 36.5 °C quantified as percentage individuals reaching cleavage stage embryos, blastula, gastrula, early-bipinnaria, late-bipinnaria or abnormal. Measurements were made at 7 times up 72 h post-fertilisation, with morphometrics measured in...
Abstract Ocean acidification and decreasing seawater saturation state with respect to calcium carbonate (CaCO 3 ) minerals have raised concerns about the consequences marine organisms that build CaCO structures. A large proportion of benthic calcifiers incorporate Mg 2+ into their skeletons (Mg‐calcite), which, in general, reduces mineral stability. The relative vulnerability some ocean appears linked solubility shell or skeletal mineralogy, although sophisticated mechanisms for constructing...
Rising atmospheric CO2 concentrations will significantly reduce ocean pH during the 21st century (ocean acidification, OA). This may hamper calcification in marine organisms such as corals and echinoderms, shown many laboratory-based experiments. Sea urchins are considered highly vulnerable to OA. We studied an Echinometra species on natural volcanic vents Papua New Guinea, where they -acclimatized also subjected secondary ecological changes from elevated . Near vent site, experienced large...
As the ocean warms, thermal tolerance of developmental stages may be a key driver changes in geographical distributions and abundance marine invertebrates. Additional stressors such as acidification influence windows are therefore important considerations for predicting species under climate change scenarios. The effects reduced seawater pH on fertilization, embryology larval morphology were examined using five echinoderm species: two polar (Sterechinus neumayeri Odontaster validus),...
Abstract Environmental DNA (eDNA) metabarcoding has shown great promise as an effective, non‐invasive monitoring method for marine biomes. However, long filtration times and the need state‐of‐the‐art laboratories are restricting sample replication in situ species detections. Methodological innovations, such passive self‐contained extraction protocols, have potential to alleviate these issues. We explored implementation of sampling a protocol by comparing fish diversity obtained from active...
Abstract Global models predict that Antarctica has little suitable habitat for macroalgae and Antarctic therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), here we report diverse abundant macroalgal assemblages in un-navigated habitats of the Ross Sea from 71.5°–74.5° S. We found extensive living depths >70 m specimens crustose coralline algae as deep 125 m. Using light modelling published...