1,720,959 research outputs found
Figure 1 in Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFigure 1. Stephanolepas muricata oblique latero-carinal view. Diameter at apical margin = 5 mm.Published as part of Frick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos & Sosa-Cornejo, Ingmar, 2011, Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles, pp. 629-640 in Journal of Natural History 45 (11-12) on page 630, DOI: 10.1080/00222933.2010.534563, http://zenodo.org/record/520333
Figure 3 in Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFigure 3. Scanning electron micrograph of radius between lateral plates of Stephanolepas muricata.Published as part of Frick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos & Sosa-Cornejo, Ingmar, 2011, Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles, pp. 629-640 in Journal of Natural History 45 (11-12) on page 635, DOI: 10.1080/00222933.2010.534563, http://zenodo.org/record/520333
A framework and review for using life cycle assessment to inform eco-labeling of wild caught fisheries
Get PDFabstract: Our objectives are to: (1) review the LCA literature to determine the dominant environmental impact categories in wild-caught fisheries in order to evaluate which phases are causing the greatest impacts; and (2) determine how these impacts can best be mitigated and develop a framework that seeks to incorporates LCA into sustainable seafood guides so that consumers can make better-informed decisions. This framework will include developing meaningful LCA impact categories for sustainable seafood guides. Despite their importance, we considered social factors beyond the scope of this paper
Novel records and observations of the barnacle<i>Stephanolepas muricata</i>(Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles
No full textFrick, Michael G., Zardus, John D., Ross, Arnold, Senko, Jesse, Montano-Valdez, Dulce, Bucio-Pacheco, Marcos, Sosa-Cornejo, Ingmar (2011): Novel records and observations of the barnacle Stephanolepas muricata (Cirripedia: Balanomorpha: Coronuloidea); including a case for chemical mediation in turtle and whale barnacles. Journal of Natural History 45 (11-12): 629-640, DOI: 10.1080/00222933.2010.534563, URL: http://dx.doi.org/10.1080/00222933.2010.53456
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Compensatory Effects Drive Human Harvest-Natural Predation Dynamics of Sea Turtle Nests in Costa Rica
No full textabstract: Human consumption of sea turtle eggs, meat, and other products is considered to be a major threat to sea turtle populations worldwide. Declining populations are often attributed to anthropogenic pressures despite evident additional pressure from natural processes; however, depredation by natural or feral species such as raccoons, crabs, and dogs are often unknown. A popular tool for the conservation of marine turtle eggs is hatcheries, but their protection is limited by factors such as carrying capacity and timing or location of nests. The Rescue Center for Endangered Marine Species (CREMA) runs four sea turtle conservation projects on the nesting beaches of the Southern Nicoya Peninsula in Costa Rica, where the predominant nesting activity is from Olive Ridley turtles (Lepidochelys olivacea), followed by sporadic Green (Chelonia mydas), Leatherback (Dermochelys coriacea), and Hawksbill turtles (Eretmochelys imbricata). Two of these nesting projects are based in Costa de Oro and San Miguel, which are adjacent beaches divided by an estuary. Both projects use a hatchery where nests are usually relocated; however, when the hatchery is not available, nests are either relocated or left in situ at the beach. The aim of this study is to: 1) compare human harvest and depredation rates of nests relocated and left in situ. We reviewed data collected from 2012 to 2018 of nests relocated to a hatchery and left in situ at both nesting sites, and these data represent nesting conditions prior to relocation to a hatchery. We found that the nesting beach at Costa de Oro exhibits high rates of human harvest, which has decreased since the conservation project was established, while San Miguel exhibits comparatively low egg harvest but much higher depredation. Egg harvest in Costa de Oro decreases from approximately 50% of all nests in 2013 to 15% in 2018 while depredation on both beaches fluctuates year to year. Our results demonstrate that different pressures impact nesting beach success in the Southern Nicoya Peninsula along with natural threats, possibly due to contrasting community values and human populations. San Miguel has been protecting nests for over 20 years, whereas the Costa de Oro project only began in 2012. It also important to consider that depredation on the San Miguel nesting beach may be increased by human pressure such as in the case of domesticated animals, especially when the human population in San Miguel is consistently higher than in Costa de Oro. Persistence of depredation and human egg harvest alongside conservation efforts exhibit the prevalence of these pressures and suggest increased pressure if measures such as nightly patrols and hatchery protection were not utilized. We suggest a continuation of hatchery and patrol based conservation efforts as well as community outreach to attempt to merge cultural values with sea turtle conservation
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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