Quantifying Climatological Ranges and Anomalies for Pacific Coral Reef Ecosystems

Gove, Jamison M.; Williams, Gareth J.; McManus, Margaret A.; Heron, Scott F.; Sandin, Stuart A.; Vetter, Oliver J.; Foley, David G.

doi:10.1371/journal.pone.0061974

Cited by 100 publications

(132 citation statements)

References 65 publications

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“…As such, these longer-distance movements by mature female sharks from the NWHI to the MHI are likely to represent skipped-breeding partial migrations (Chapman et al 2012a). Why preferred nursery areas would be in the MHI is unclear, but it may be related to habitat differences such as the greater seasonal range of water temperatures and, more significantly, wave energy, in the NWHI (Gove et al 2013). However, it should be noted that year-round fishing was only conducted around Oahu; hence, there may be additional pupping areas of which we are unaware.…”

Section: Discussionmentioning

confidence: 99%

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Telemetry and random‐walk models reveal complex patterns of partial migration in a large marine predator

Papastamatiou

Meyer

Carvalho

et al. 2013

Ecology

148

163

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Abstract. Animals are often faced with complex movement decisions, particularly those that involve long-distance dispersal. Partial migrations, ubiquitous among all groups of vertebrates, are a form of long-distance movement that occurs when only some of the animals in a population migrate. The decision to migrate or to be a resident can be dependent on many factors, but these factors are rarely quantified in fishes, particularly top predators, even though partial migrations may have important implications for ecosystem dynamics and conservation. We utilized passive acoustic telemetry, with a Brownian bridge movement model and generalized additive mixed models, to explore the factors regulating partial migration in a large marine predator, the tiger shark, throughout the Hawaiian Islands. Although sharks tended to utilize a particular ''core'' island, they also demonstrated inter-island movements, particularly mature females that would swim from the northwestern Hawaiian Islands to the main Hawaiian Islands (MHI). Immigration to another island was a function of season, sea surface temperature (SST), and chlorophyll a concentration. Our results predict that 25% of mature females moved from remote French Frigate Shoals atoll to the MHI during late summer/early fall, potentially to give birth. Females with core home ranges within the MHI showed limited movements to the NWHI, and immigration to an island was better explained by SST and chlorophyll a concentration, suggesting a foraging function. Dispersal patterns in tiger sharks are complex but can be considered a mix of skipped-breeding partial migration by mature females and individual-based inter-island movements potentially linked to foraging. Therefore, sharks appear to use a conditional strategy based on fixed intrinsic and flexible extrinsic states. The application of Brownian bridge movement models to electronic presence/ absence data provides a new technique for assessing the influence of habitat and environmental conditions on patterns of movement for fish populations.

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Section: Discussionmentioning

confidence: 99%

“…We obtained daily island-specific data for sea surface temperature (SST), chlorophyll a concentration, and wave energy, using the newly derived metrics described by Gove et al (2013). This metric combines bathymetric information with remotely sensed data and modeled wave data to produce spatially constrained, islandspecific measures.…”

Section: Environmental Datamentioning

confidence: 99%

Telemetry and random‐walk models reveal complex patterns of partial migration in a large marine predator

Papastamatiou

Meyer

Carvalho

et al. 2013

Ecology

148

163

View full text Add to dashboard Cite

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“…In addition, seawater aragonite saturation state values calculated from fCO 2 and pH during July 2012 reveal a decrease in nearshore waters as well as a latitudinal decrease in the surrounding open ocean. In addition to the lower X ar values observed in this study, coral reefs of the northern atolls are subject to conditions less favorable for reef accretion due to higher wave energy during the winters, extreme seasonal variability in water temperatures, and lower solar insolation (Grigg 1982;Andersson and Mackenzie 2004;Andersson et al 2005;Orr et al 2005;Rooney et al 2008;Doney et al 2009;Gove et al 2013), relative to the southern reefs. Although we do not have winter carbon data in the NWHI, the environmental conditions of the North Pacific subtropical ocean would likely drive X ar approximately one unit lower than the summer values observed in this study.…”

Section: Discussionmentioning

confidence: 63%

Latitudinal Trends and Drivers in the CO2–Carbonic Acid System of Papahānaumokuākea Marine National Monument

et al. 2015

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Emissions of anthropogenic carbon dioxide (CO 2 ) to the atmosphere and the consequent effects of climate change and ocean acidification on coral reef ecosystems have motivated significant interest in describing and understanding the CO 2 -carbonic acid system of diverse coral reef environments. Although numerous studies have been successful in monitoring reef metabolism both in the field and in the laboratory, physical and biological forcings produce distinct conditions among environments. Due to the geographic isolation and associated difficulties with measuring marine carbon chemistry in waters of the Papahānaumokuākea Marine National Monument (PMNM), relatively few studies have described the CO 2 -carbonic acid system and carbonate saturation state gradients of these waters. Yet, PMNM remains one of the largest conservation areas in the world with extensive and diverse coral reef ecosystems that could offer valuable insight into our current and future understanding about regional and global impacts of ocean acidification. In order to provide a broad overview of latitudinal trends and features of the marine carbon system in PMNM waters, continuous measurements for surface seawater fugacity of CO 2 (fCO 2 ) and pH were collected during August 2011 and July 2012 cruises of the NOAA Ship Hi'ialakai. These 123Aquat Geochem (2015) 21:535-553 DOI 10.1007/s10498-015-9273-z measurements indicate that pH and fCO 2 are three times more variable in nearshore monument waters relative to open ocean transect measurements. This variability can be observed up to 50 km away from the nearest reef and is likely the result of the direct and significant impact of coral reef metabolism on marine carbon chemistry around the islands and atolls. The relationship between total alkalinity and dissolved inorganic carbon is consistent with net calcification which creates an alkalinity sink throughout PMNM waters. Additionally, our measurements show clear latitudinal trends in fCO 2 , pH, and aragonite saturation state that are influenced by environmental forcings, including temperature, wind speed, and residence time of the water. Collectively, our results suggest that coral reefs located at the northernmost atolls of PMNM may be the most susceptible to the adverse impacts of climate change and ocean acidification.

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“…Pacific reef systems spanning a wide range of pH, wave energy, and flow conditions (Gove et al, 2013). There are several potential mechanisms by which OA can cause increased macrobioerosion of live corals.…”

Section: Discussionmentioning

confidence: 99%

A scientific framework for evaluating coral reef resilience to climate change

Barkley¹

2016

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The 21 century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. In this thesis, I develop a scientific framework for identifying climate change resilience in coral communities and, using Palau's coral reefs as a case study, demonstrate the application of this approach. First, I use coral skeletal records to evaluate the sensitivity of coral communities to episodes of severe thermal stress. This information reveals coral reef communities that consistently exhibit weak responses to multiple high temperature events. Second, I evaluate coral reef community structure across a strong, natural pH gradient using metrics informed by laboratory ocean acidification studies. The coral communities of Palau's Rock Island reefs show a level of pH tolerance that is unique amongst reefs studied to date. Third, I conduct laboratory and field experiments to constrain the pH thresholds of these resilient corals and investigate potential mechanisms for pH tolerance. Finally, I combine archipelago-wide coral temperature and pH sensitivity data to construct climate change resilience indices. My study succeeds in identifying a small number of coral communities that have the potential to withstand 21 century climate change and highlights the spatial variability in community responses to ocean warming and acidification. Critically, I present a set of scientific tools and approaches for identifying resilient coral reef communities that has applicability to coral reefs worldwide. I thank all of the members of the Cohen Lab past and present -Katie Shamberger, Liz Drenkard, Alice Alpert, Tom DeCarlo, Sara Bosshart, Hanny Rivera, Nathan Mollica, Michael Holcomb, and Neal Cantin -for their scientific knowledge, assistance in the field, camaraderie in research, and friendship. I am grateful to Kathryn Pietro and Pat Lohmann for their help in collecting field samples; Liz Bonk, Katherine Hoering, Dave Wellwood, and Paul Henderson for assistance in carbonate chemistry, salinity, and nutrient analyses; Julie Arruda and Scott Cramer for CT-scanning my coral cores; and Ed O'Brien and the WHOI Diving Program for helping with SCUBA diving operations. In addition, I thank the WHOI Academic Programs Office for their tireless assistance, support, and guidance.My extensive field research was made possible by the scientists and staff of the Palau International Coral Reef Center, who provided me with essential logistical aid during six field expeditions to Palau, drove me all over the archipelago to sample water and coral, helped me set up my laboratory experiments, and taught me about Palau's coral reefs. Sulang! The completion of this five-year journey is very much a result of the amazing love and endless support of my incredible family and friends. In particular, I thank my parents, Ron and Barbara, and my brother, Ben, who have celebra...

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Quantifying Climatological Ranges and Anomalies for Pacific Coral Reef Ecosystems

Cited by 100 publications

References 65 publications

Telemetry and random‐walk models reveal complex patterns of partial migration in a large marine predator

Telemetry and random‐walk models reveal complex patterns of partial migration in a large marine predator

Latitudinal Trends and Drivers in the CO2–Carbonic Acid System of Papahānaumokuākea Marine National Monument

A scientific framework for evaluating coral reef resilience to climate change

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