7 Works

Data from: Network analysis of sea turtle movements and connectivity: a tool for conservation prioritization

Connie Y. Kot, Susanne Åkesson, Joanna Alfaro-Shigueto, Diego Fernando Amorocho Llanos, Marina Antonopoulou, George H. Balazs, Warren R. Baverstock, Janice M. Blumenthal, Annette C. Broderick, Ignacio Bruno, Ali Fuat Canbolat, Paolo Casale, Daniel Cejudo, Michael S. Coyne, Corrie Curtice, Sarah DeLand, Andrew DiMatteo, Kara Dodge, Daniel C. Dunn, Nicole Esteban, Angela Formia, Mariana M. P. B. Fuentes, Ei Fujioka, Julie Garnier, Matthew H. Godfrey … & Patrick N. Halpin
Aim: Understanding the spatial ecology of animal movements is a critical element in conserving long-lived, highly mobile marine species. Analysing networks developed from movements of six sea turtle species reveals marine connectivity and can help prioritize conservation efforts. Location: Global. Methods: We collated telemetry data from 1,235 individuals and reviewed the literature to determine our dataset’s representativeness. We used the telemetry data to develop spatial networks at different scales to examine areas, connections, and their...

Data from: The impact of autotrophic versus heterotrophic nutritional pathways on colony health and wound recovery in corals

Elizabeth M. Burmester, Adrienne Breef-Pilz, Nicholas F. Lawrence, Les Kaufman, John R. Finnerty & Randi D. Rotjan
For animals that harbor photosynthetic symbionts within their tissues, such as corals, the different relative contributions of autotrophy versus heterotrophy to organismal energetic requirements have direct impacts on fitness. This is especially true for facultatively symbiotic corals, where the balance between host-caught and symbiont-produced energy can be altered substantially to meet the variable demands of a shifting environment. In this study, we utilized a temperate coral-algal system (the northern star coral, Astrangia poculata, and its...

Data from: A connection between colony biomass and death in Caribbean reef-building corals

Daniel J. Thornhill, Randi D. Rotjan, Brian D. Todd, Geoff C. Chilcoat, Roberto Iglesias-Prieto, Todd C. LaJeunesse, Dustin W. Kemp, Jennifer McCabe Reynolds, Gregory W. Schmidt, Thomas Shannon, Mark E. Warner & William K. Fitt
Increased sea-surface temperatures linked to warming climate threaten coral reef ecosystems globally. To better understand how corals and their endosymbiotic dinoflagellates (Symbiodinium spp.) respond to environmental change, tissue biomass and Symbiodinium density of seven coral species were measured on various reefs approximately every four months for up to thirteen years in the Upper Florida Keys, United States (1994–2007), eleven years in the Exuma Cays, Bahamas (1995–2006), and four years in Puerto Morelos, Mexico (2003–2007). For...

Data from: Influence of environmental parameters on movements and habitat utilization of humpback whales (Megaptera novaeangliae) in the Madagascar breeding ground

Laurène Trudelle, Salvatore Cerchio, Alexandre N. Zerbini, Ygor Geyer, Francois-Xavier Mayer, Jean-Luc Jung, Maxime R. Hervé, Stéphane Pous, Jean-Baptiste Sallée, Howard C. Rosenbaum, Olivier Adam & Jean-Benoit Charrassin
Assessing the movement patterns and key habitat features of breeding humpback whales is a prerequisite for the conservation management of this philopatric species. To investigate the interactions between humpback whale movements and environmental conditions off Madagascar, we deployed 25 satellite tags in the northeast and southwest coast of Madagascar. For each recorded position, we collated estimates of environmental variables and computed two behavioural metrics: behavioural state of ‘transiting’ (consistent/directional) versus ‘localized’ (variable/non-directional), and active swimming...

Data from: A worldwide perspective on the population structure and genetic diversity of bottlenose dolphins (Tursiops truncatus) in New Zealand

Gabriela Tezanos-Pinto, Charles S Baker, Kirsty Russell, Karen Martien, Robin Baird, Alistair Hutt, Gregory Stone, Antonio A Mignucci-Giannoni, Susana Caballero, Tetsuya Endo, Shane Lavery, Marc Oremus, Carlos Olavarria & Claire Garrigue
Bottlenose dolphins (Tursiops truncatus) occupy a wide range of coastal and pelagic habitats throughout tropical and temperate waters worldwide. In some regions, "inshore" and "offshore" forms or ecotypes differ genetically and morphologically, despite no obvious boundaries to interchange. Around New Zealand, bottlenose dolphins inhabit 3 coastal regions: Northland, Marlborough Sounds, and Fiordland. Previous demographic studies showed no interchange of individuals among these populations. Here, we describe the genetic structure and diversity of these populations using...

Investigating thermal physiology in large whales via aerial infrared thermography

Gina Lonati, Daniel Zitterbart, Carolyn A. Miller, Peter Corkeron, Christin Murphy & Michael J. Moore
The critically endangered status of North Atlantic right whales (NARWs, Eubalaena glacialis) warrants the development of new, less invasive technology to monitor the health of individuals. Combined with advancements in remotely piloted aircraft systems (RPAS, commonly “drones”), infrared thermography (IRT) is being increasingly used to detect and count marine mammals and study their physiology. We conducted RPAS-based IRT over NARWs in Cape Cod Bay, Massachusetts, USA in 2017 and 2018. Observations demonstrated three particularly useful...

Data from: Patterns, dynamics and consequences of microplastic ingestion by the temperate coral, Astrangia poculata

Randi D. Rotjan, Koty H. Sharp, Anna E. Gauthier, Rowan Yelton, Eliya M Baron Lopez, Jessica Carilli, Jonathan C. Kagan & Juanita Urban-Rich
Microplastics (less than 5 mm) are a recognized threat to aquatic food webs because they are ingested at multiple trophic levels and may bioaccumulate. In urban coastal environments, high densities of microplastics may disrupt nutritional intake. However, behavioural dynamics and consequences of microparticle ingestion are still poorly understood. As filter or suspension feeders, benthic marine invertebrates are vulnerable to microplastic ingestion. We explored microplastic ingestion by the temperate coral Astrangia poculata. We detected an average...

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