A5061982507- Isotope Analysis in Ecology
- Marine animal studies overview
- Avian ecology and behavior
- Turtle Biology and Conservation
- Geology and Paleoclimatology Research
- Wildlife Ecology and Conservation
- Fish Ecology and Management Studies
- Social Acceptance of Renewable Energy
- Animal Behavior and Reproduction
- Marine and coastal ecosystems
- Energy and Environment Impacts
- Amphibian and Reptile Biology
- Groundwater and Isotope Geochemistry
- Bat Biology and Ecology Studies
- Marine and fisheries research
- Radioactive contamination and transfer
- Animal Ecology and Behavior Studies
- Plant and animal studies
- Ecology and biodiversity studies
- Marine Ecology and Invasive Species
- RNA and protein synthesis mechanisms
- Marine Bivalve and Aquaculture Studies
- Morphological variations and asymmetry
- Animal Behavior and Welfare Studies
- Knee injuries and reconstruction techniques
University of Florida
2014-2024
Sea Turtle Conservancy
2010-2024
United States Geological Survey
2018-2024
Forest and Rangeland Ecosystem Science Center
2018
University of Utah
2013-2017
Ecological Society of America
2016
John Wiley & Sons (United States)
2016
Los Alamos National Laboratory
2004
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 31:337-382 (2016) - DOI: https://doi.org/10.3354/esr00801 REVIEW Are we working towards global research priorities for management and conservation of sea turtles? A. F. Rees1, J. Alfaro-Shigueto, P. C. R. Barata, K. Bjorndal, B. Bolten, Bourjea, Broderick1, L. M. Campbell, Cardona, Carreras, Casale, S. Ceriani, H....
Abstract Natural‐abundance stable isotope ratios provide a wealth of ecological information relating to food web structure, trophic level, and location. The correct interpretation data requires an understanding spatial temporal variation in the isotopic compositions at base web. In marine pelagic environments, accurate is hampered by lack reliable, spatio‐temporally distributed measurements baseline compositions. this study, we present relatively simple, process‐based carbon model that...
Individual variation in resource use has often been ignored ecological studies, but closer examination of individual patterns through time may reveal significant intrapopulation differences. Adult loggerhead sea turtles ( Caretta caretta ) are generalist carnivores with a wide geographical range, resulting broad isotopic niche. We microsampled scute, persistent and continuously growing tissue, to examine long-term (up 12 years) 15 nesting turtles. Using stable isotopes nitrogen carbon, we...
The measurement of stable carbon (δ13C) and nitrogen (δ15N) isotopes in tissues organisms has formed the foundation isotopic food web reconstructions, as these values directly reflect assimilated diet. In contrast, hydrogen (δ2H) oxygen (δ18O) isotope measurements have typically been reserved for studies migratory origin paleoclimate reconstruction based on systematic relationships between organismal tissue local environmental water. Recently, innovative applications using δ2H and, to a...
Understanding the ecology and evolution of insect societies requires greater knowledge how sociality affects performance whole colonies. Metabolic scaling theory, based largely on body mass metabolic rate, has successfully predicted many aspects physiology life history individual (or unitary) organisms. Here we show, using a diverse set social species, that this same theory predicts size dependence basic features (i.e., reproductive allocation) survival, growth, reproduction) The similarity...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 476:237-249 (2013) - DOI: https://doi.org/10.3354/meps10185 Trophic ecology of a green turtle breeding population Hannah B. Vander Zanden1,*, Karen E. Arthur2, Alan Bolten1, Brian N. Popp2, Cynthia J. Lagueux3, Emma Harrison4, Cathi L. Campbell5, A. Bjorndal1 1Archie Carr Center for Sea Turtle Research and...
Summary Stable isotope ratios of H and O (δ 2 δ 18 O) are intrinsic properties biological geological materials, can be used to constrain the geographic origin movements such materials. One most widespread uses data in ecology is reconstruct animals by comparing chemically inert tissues predictive models (‘isoscapes’) spatial isotopic variation environmental water. Although analysis for isotope‐based assignment subject ongoing research, a basic framework this work has emerged. Here, we...
Stable isotope analysis is a useful tool to track animal movements in both terrestrial and marine environments. These intrinsic markers are assimilated through the diet may exhibit spatial gradients as result of biogeochemical processes at base food web. In environment, maps predict distribution stable isotopes limited, thus determining geographic origin has been reliant upon integrating satellite telemetry data. Migratory sea turtles regularly move between foraging reproductive areas....
Abstract Methods for inferring geographic origin from the stable isotope composition of animal tissues are widely used in movement ecology, but few computational tools and standards data interpretation available. We introduce assignR r package, which provides a structured, flexible toolkit isotope‐based migration analysis using adopted semi‐parametric Bayesian inversion method. bundles resources functions that support interpretation, hypothesis‐testing quality assessment, allowing end‐to‐end...
We examine inherent variation in carbon and nitrogen stable isotope values of multiple soft tissues from a population captive green turtles Chelonia mydas to determine the extent isotopic due individual differences physiology. compare measured with observed wild juvenile turtles. Additionally, we measure diet-tissue discrimination factors offset that occurs between food source four turtle tissues. Tissue samples (epidermis, dermis, serum, red blood cells) were collected two life stages (40...
Renewable energy production can kill individual birds, but little is known about how it affects avian populations. We assessed the vulnerability of populations for 23 priority bird species killed at wind and solar facilities in California, USA. Bayesian hierarchical models suggested that 48% these were vulnerable to population-level effects from added fatalities caused by renewables other sources. Effects extended far beyond location impact distant regions across continental migration...
Stable isotope data have made pivotal contributions to nearly every discipline of the physical and natural sciences. As generation application stable continues grow exponentially, so does need for a unifying repository improve accessibility promote collaborative engagement. This paper provides an overview design, development, implementation IsoBank (www.isobank.org), community-driven initiative create open-access implemented online in 2021. A central goal is provide web-accessible database...
Differential foraging area use can affect population demographics of highly migratory fauna because differential environmental changes and anthropogenic threats among those areas. Thus, identification areas is vital for the development effective management strategies endangered species. In this study, we assigned 375 loggerhead turtles ( Caretta caretta ) nesting at six locations along east coast United States to their in Northwest Atlantic (NWA) using carbon nitrogen stable isotope values...
Summary As a result of predictable large‐scale continental gradients in the isotopic composition precipitation, stable isotopes hydrogen (δ 2 H) are useful endogenous markers for delineating long‐distance movements animals. Models to predict patterns δ H precipitation p ), and consequently determine likely geographic origin migratory animals, have traditionally used static, amount‐weighted long‐term average values over growing season. However, animal tissues reflect incorporated from food...
Abstract Bird populations are declining globally. Wind and solar energy can reduce emissions of fossil fuels that drive anthropogenic climate change, yet renewable‐energy production represents a potential threat to bird species. Surveys assess effects at facilities exclusively local, the geographic extent encompassed by birds killed these is largely unknown, which creates challenges for minimizing mitigating population‐level cumulative fatalities. We performed geospatial analyses stable...
Assessments of large-scale disasters, such as the Deepwater Horizon oil spill, are problematic because while measurements post-disturbance conditions common, pre-disturbance baselines only rarely available. Without adequate observations pre-disaster organismal and environmental conditions, it is impossible to assess impact catastrophes on animal populations ecological communities. Here, we use long-term biological tissue records provide data for a vulnerable marine organism. Keratin samples...
RATIONALE Stable isotope analysis has been used extensively to provide ecological information about diet and foraging location of many species. The difference in isotopic composition between animal tissue its diet, or the diet-tissue discrimination factor, varies with type. Therefore, direct comparisons values tissues are inaccurate without an appropriate conversion factor. We focus on loggerhead sea turtle (Caretta caretta), for which a variety have examine habitat use, migratory origin...
Abstract Alternative life history strategies are mechanisms by which organisms able to maximize fitness across a range of environmental conditions. Fitness is maximized different depending on context, resulting in trade-offs between strategies. Monarch butterflies (Danaus plexippus) employ both migratory and resident Since residents breed throughout the year, but migrants overwinter reproductive diapause, there two We used stable isotope analysis evaluate geographic origins monarchs...
Assessing environmental changes in Southern Ocean ecosystems is difficult due to its remoteness and data sparsity. Monitoring marine predators that respond rapidly variation may enable us track anthropogenic effects on ecosystems. Yet, many long-term datasets of are incomplete because they spatially constrained and/or already modified by industrial fishing whaling the latter half 20th century. Here, we assess contemporary offshore distribution a wide-ranging predator, southern right whale...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 17:133-138 (2012) - DOI: https://doi.org/10.3354/esr00412 Mother−offspring stable isotope discrimination in loggerhead sea turtles Caretta caretta Nicole S. Frankel1, Hannah B. Vander Zanden1,*, Kimberly J. Reich1, Kris L. Williams2, Karen A. Bjorndal1 1Archie Carr Center for Sea Turtle and Department of Biology,...