1,720,977 research outputs found
First record of the cirripede Anelasma squalicola Darwin, 1852 (Pollicipedidae) in the Mediterranean Sea
No full textMartín-Lázaro, Alba, Isbert, Wolf, Repullés-Albeda, Aigües, García-Ruiz, Cristina, Montero, Francisco E. (2023): First record of the cirripede Anelasma squalicola Darwin, 1852 (Pollicipedidae) in the Mediterranean Sea. Zootaxa 5230 (3): 381-390, DOI: 10.11646/zootaxa.5230.3.7, URL: http://dx.doi.org/10.11646/zootaxa.5230.3.
FIGURE 1 in First record of the cirripede Anelasma squalicola Darwin, 1852 (Pollicipedidae) in the Mediterranean Sea
No full textFIGURE 1. Distribution map of A. squalicola. Dots represent records infecting the host E. spinax (Hickling, 1963; FernándezOvies, 1995; Rees et al. 2014; Bergum, 2016; Eliassen, 2016; Ommundsen et al. 2016; Maques, 2019; Rees et al. 2019) and squares are of other host species cited (Causey, 1957; Long & Waggoner, 1993; Yano & Musick, 2000; Ommundsen et al. 2016; Espínola-Novelo et al. 2018; Rees et al. 2019; Angulo & Sibaja-Cordero, 2021). The red dot corresponds to the present study.Published as part of Martín-Lázaro, Alba, Isbert, Wolf, Repullés-Albeda, Aigües, García-Ruiz, Cristina & Montero, Francisco E., 2023, First record of the cirripede Anelasma squalicola Darwin, 1852 (Pollicipedidae) in the Mediterranean Sea, pp. 381-390 in Zootaxa 5230 (3) on page 384, DOI: 10.11646/zootaxa.5230.3.7, http://zenodo.org/record/756153
Raw data of physical oceanography during RV HEINCKE cruise HE648
No full textRaw physical oceanography data was acquired by a ship-based Seabird SBE911plus CTD-Rosette system onboard RV HEINCKE . The CTD was equipped with duplicate sensors for temperature (SBE3plus) and conductivity (SBE4) as well as one sensor for oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer (FLRTD) and an altimeter (Teledyne Benthos PSA-916) were mounted to the CTD. The data was recorded using pre-cruise calibration coefficients. No correction, post-cruise calibration or quality control was applied. Processed profile data are available via the link below
Developing artificial collectors for growth monitoring of biofouling communities in the southern German Bight – North Sea
Get PDFWith regard to the current climate crisis, offshore wind energy in particular is developing
into an increasingly important sustainable resource for energy production in order to
replace fossil fuels in the future. The foundations of the individual wind turbines create a
reef effect and provide a habitat for organisms that would not naturally occur on the
predominantly sandy seabed of the southern North Sea. Through artificial hard
substrates, settlement and development processes of so-called biofouling organisms
can be observed and documented. During the construction of such plants, load
coefficients caused by fouling organisms have to be taken into account. Until now, these
load coefficients have always been estimated, since no suitable studies exist to calculate
the values accurately. Therefore, within the EnviSim4Mare project, a seawater wave and
flow channel is constructed for the first time in Germany to perform measurements on
suitable test bodies with fouling. To ensure standardized sampling for the evaluation of
fouling communities, two artificial hard substrates were developed and deposited at an
exposed offshore (Nordergründe wind farm) and sheltered site (north-east harbour of
Helgoland).
This bachelor thesis presents and discusses the compiled results of the development
(with consideration of different environmental conditions) deployment, handling during
sampling as well as the developed emergent communities of the two systems. A
sampling period of two years (May to December 2021 and April to October 2022) was
considered. Monitoring under real conditions of biofouling communities will provide
information on the seasonal and spatial settlement processes as well as composition of
individual taxa and show which organisms exhibit dominant characteristics. Three
habitats were distinguished between the two sites: Nordergründe sublittoral
(underwater), Helgoland eulittoral (intertidal) and Helgoland sublittoral. Through morpho taxonomic analyses three biofouling communities were identified, which differ mainly in
their location and are characterized by specific abiotic factors
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
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
- …
