scholarly journals Peer Review #2 of "Image based quantitative comparisons indicate heightened megabenthos diversity and abundance at a site of weak hydrocarbon seepage in the southwestern Barents Sea (v0.1)"

Author(s):  
E Cordes
Keyword(s):  
2014 ◽  
Vol 35 (2) ◽  
pp. 291-310 ◽  
Author(s):  
Christiane Todt ◽  
Kevin M Kocot

Abstract During August–September 2011, scientists aboard the R/V Meteor sampled marine animals around Iceland for the IceAGE project (Icelandic marine Animals: Genetics and Ecology). The last sample was taken at a site known as “The Rose Garden” off northeastern Iceland and yielded a large number of two species of Proneomenia (Mollusca, Aplacophora, Solenogastres, Cavibelonia, Proneomeniidae). We examined isolated sclerites, radulae, and histological section series for both species. The first, Proneomenia sluiteri Hubrecht, 1880, was originally described from the Barents Sea. This is the first record of this species in Icelandic waters. However, examination of aplacophoran lots collected during the earlier BIOICE campaign revealed additional Icelandic localities from which this species was collected previously. The second represents a new species of Proneomenia, which, unlike other known representatives of the genus, broods juveniles in the mantle cavity. We provide a formal description, proposing the name Proneomenia custodiens sp. n. Interestingly, the sclerites of brooded juveniles are scales like those found in the putatively plesiomorphic order Pholidoskepia rather than hollow needles like those of the adults of this species. Cytochrome c oxidase subunit I (COI) DNA barcode sequences are provided for both species of Proneomenia.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7398 ◽  
Author(s):  
Arunima Sen ◽  
Cheshtaa Chitkara ◽  
Wei-Li Hong ◽  
Aivo Lepland ◽  
Sabine Cochrane ◽  
...  

Background High primary productivity in the midst of high toxicity defines hydrocarbon seeps; this feature usually results in significantly higher biomass, but in lower diversity communities at seeps rather than in the surrounding non-seep benthos. Qualitative estimates indicate that this dichotomy does not necessarily hold true in high latitude regions with respect to megafauna. Instead, high latitude seeps appear to function as local hotspots of both megafaunal diversity and abundance, although quantitative studies do not exist. In this study, we tested this hypothesis quantitatively by comparing georeferenced seafloor mosaics of a seep in the southwestern Barents Sea with the adjacent non-seep seafloor. Methods Seafloor images of the Svanefjell seep site and the adjacent non seep-influenced background seabed in the southwestern Barents Sea were used to construct georeferenced mosaics. All megafauna were enumerated and mapped on these mosaics and comparisons of the communities at the seep site and the non-seep background site were compared. Sediment push cores were taken in order to assess the sediment geochemical environment. Results Taxonomic richness and abundance were both considerably higher at the seep site than the non-seep location. However, taxa were fewer at the seep site compared to other seeps in the Barents Sea or the Arctic, which is likely due to the Svanefjell seep site exhibiting relatively low seepage rates (and correspondingly less chemosynthesis based primary production). Crusts of seep carbonates account for the higher diversity of the seep site compared to the background site, since most animals were either colonizing crust surfaces or using them for shelter or coverage. Our results indicate that seeps in northern latitudes can enhance local benthic diversity and this effect can take place even with weak seepage. Since crusts of seep carbonates account for most of the aggregating effect of sites experiencing moderate/weak seepage such as the study site, this means that the ability of seep sites to attract benthic species extends well beyond the life cycle of the seep itself, which has important implications for the larger marine ecosystem and its management policies.


2017 ◽  
Vol 15 (3-4) ◽  
pp. 1-11
Author(s):  
Jaime A. Teixeira da Silva ◽  
Aceil Al-Khatib

Without peer reviewers, the entire scholarly publishing system as we currently know it would collapse. However, as it currently stands, publishing is an extremely exploitative system, relative to other business models, in which trained and specialized labor is exploited, in the form of editors and peer reviewers, primarily by for-profit publishers, in return for a pat on the back, and a public nod of thanks. This is the “standardized” and “accepted” form for deriving mainstream peer reviewed literature. However, except for open peer review, where reports are open and identities are known, traditional peer review is closed, and the content of peer reports is known only to the authors and editors involved. Publons launched in 2012 as a platform that would offer recognition to peer reviewers for their work. In 2016, Publons rewarded the most productive reviewers with a “Sentinels of Science” award, accompanied by a dismal monetary reward (38 US cents/review) for their efforts. A site aimed at registering pre- and post-publication peer efforts, Publons was perceived as a positive step towards a more transparent peer review system. However, the continued presence of fake peer reviews and a spike in retractions, even among publishers that were Publons sponsors, suggests that perhaps peers may be exploiting Publons to get recognition for superficial or poor peer review. Since all reviews are not public, their content and quality cannot be verified. On 1 June 2017, ClarivateTM Analytics, which owns the journal impact factor—most likely the most gamed non-academic factor in academic publishing—which is a measure of the number of citations of papers in journals, many of which are published by the for-profit publishers—including Publons sponsors—that “employ” free peer reviewers to quality check the literature they then sell for profit, purchased Publons. Touting the purchase as a way to increase transparency, and stamp out fake peer review, some who had supported Publons felt betrayed, even cancelling their Publons accounts immediately when learning of this purchase. Their concerns included the possible “gaming” of peer review as had taken place with the journal impact factor. This commentary examines possible positive and negative aspects of this business transaction, and what it might mean to academics and publishers.


2015 ◽  
Vol 04 (01) ◽  
pp. 53-55 ◽  
Author(s):  
Abhimanyu Pallavi Sudhir ◽  
Rahel Knöpfel

PhysicsOverflow is a high-level physics site intended to facilitate real-time discussion between academics and professional researchers in physics. It contains a graduate-level Q&A forum and an open peer review system for discussing and reviewing pre-prints. The Q&A forum is a physics counterpart of MathOverflow, accepting graduate-level physics questions, while the Reviews section is an open peer review system that intends to complement peer reviewing in conventional journals. There is also an "Open Problems" section to allow researchers to communicate and collaborate on their research problems, and a "Chat" section for more informal discussions relating to physics. Content may be commented and voted on to discuss the accuracy of posts. Moderation and policy discussions are done by the community, which can, through voting, decide on issues like closing questions and deleting posts. The site generally receives about 50,000 page views a month, and has received the attention of professional physicists, including string theorists, condensed matter theorists, experimentalists and mathematical physicists from around the globe.


Author(s):  
O.L. Krivanek ◽  
J. TaftØ

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.


Author(s):  
Fred Eiserling ◽  
A. H. Doermann ◽  
Linde Boehner

The control of form or shape inheritance can be approached by studying the morphogenesis of bacterial viruses. Shape variants of bacteriophage T4 with altered protein shell (capsid) size and nucleic acid (DNA) content have been found by electron microscopy, and a mutant (E920g in gene 66) controlling head size has been described. This mutant produces short-headed particles which contain 2/3 the normal DNA content and which are non-viable when only one particle infects a cell (Fig. 1).We report here the isolation of a new mutant (191c) which also appears to be in gene 66 but at a site distinct from E920g. The most striking phenotype of the mutant is the production of about 10% of the phage yield as “giant” virus particles, from 3 to 8 times longer than normal phage (Fig. 2).


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