Writing the First Draft of Your Science Paper

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Six things to do before writing your manuscriptHow to Prepare a Manuscript for International Journals Part 1In this monthly series, Dr. Angel Borja draws on his extensive background as an author, reviewer and editor togive advice on preparing the manuscript (author's view), the evaluation process (reviewer's view) and what thereis to hate or love in a paper (editor's view).

This article is the first in the series.

In 2005, Elsevier asked me to give a course on scientific writing. The course was very successful, and since then,I have organized similar courses at least once a year. Why? I think that sometimes researchers are not trained bytheir supervisors in writing scientific papers during the PhD period, which is the best time to learn the principlesand discipline of publishing.

The AuthorAngel Borja, PhDDr. Angel Borja (@AngelBorjaYerro) is Head of Projects at AZTI-Tecnalia, a research center in the BasqueCountry in Spain specializing in marine research and food technologies. Formerly he was also Head of theDepartment of Oceanography and Head of the Marine Management Area. His main topic of investigation ismarine ecology, and has published more than 270 contributions, from which 150 are in over 40 peer-reviewedjournals, through his long career of 32 years of research. During this time he has investigated in multiple topicsand ecosystem components, having an ample and multidisciplinary view of marine research.

Dr. Borja is the Editor of several journals, including Frontiers in Marine Ecosystem Ecology, Revista deInvestigacin Marina, Elsevier's Journal of Sea Research and Continental Shelf Research. In addition, he is amember of the editorial boards of Elsevier's Marine Pollution Bulletin, Ecological Indicators and Ocean & CoastalManagement.

Read more about his work on ResearchGate, ORCID and LinkedIn.

During these courses, I try to give my triple vision of the publishing process: as author, reviewer and editor. I haveworked at universities and at a research center since 1979. Since 1981, when I published my first paper, I havewritten more than 270 scientific contributions, 150 of which are in more than 40 different peer-reviewed journals.

For any author, it is also important to review papers from colleagues (I review an average of 45 to 50 papers peryear, and I have reviewed for more than 65 different scientific journals), because this gives a broader view of thehot topics for publication. I'm also the editor of several journals.For these reasons, I think I can provide myparticular view of how to increase your chances of having a paper accepted.

1. Think about why you want to publish your work and whether it's publishable.Writing a paper starts well in advance of the actual writing. In fact, you must to think about why you want topublish your work at the beginning of your research, when you question your hypothesis. You need to check thenif the hypothesis and the survey/experiment design are publishable. Ask yourself:

Have I done something new and interesting?Is there anything challenging in my work?Is my work related directly to a current hot topic?Have I provided solutions to some difficult problems?

If all answers are "yes," then you can start preparations for your manuscript. If any of the responses are "no," youcan probably submit your paper to a local journal or one with lower Impact Factor.

When responding to these questions, you should keep in mind that reviewers are using questionnaires in whichthey must respond to questions such as:

Does the paper contain sufficient new material?Is the topic within the scope of the journal?Is it presented concisely and well organized?Are the methods and experiments presented in the way that they can be replicated again?Are the results presented adequately?Is the discussion relevant, concise and well documented?Are the conclusions supported by the data presented?Is the language acceptable?Are figures and tables adequate and well designed?, are there information duplicated? Are they too many?Are all references cited in the text included in the references list?

2. Decide what type of the manuscript to write.You have at least three options on the type of manuscript:

1. Full articles, or original articles, are the most important papers. Often they are substantial completedpieces of research that are of significance as original research.

2. Letters/rapid communications/short communications are usually published for the quick and earlycommunication of significant and original advances. They are much shorter than full articles (usually strictlylimited in size, depending on each journal).

3. Review papers or perspectives summarize recent developments on a specific hot topic, highlightingimportant points that have previously been reported and introduce no new information. Normally they aresubmitted on invitation by the editor of the journal.

When looking at your available information, you must self-evaluate your work: Is it sufficient for a full article, or areyour results so thrilling that they should be shown as soon as possible?

You should ask your supervisor (if you are a PhD student) or a colleague for advice on the manuscript type to besubmitted. Remember also that sometimes outsiders i.e., colleagues not involved in your research can seethings more clearly than you.

Whatever type of article you write, plan to submit only one manuscript, not a series of manuscripts. (Normallyeditors hate this practice, since they have limited space in the journals and series of manuscripts consume toomany pages for a single topic or an author/group of authors)

3. Choose the target journal.A common question is how to select the right journal for your work. Do not gamble by scattering your manuscriptto many journals at the same time. Only submit once and wait for the response of the editor and the reviewers.

The most common way of selecting the right journal is to look at the articles you have consulted to prepare yourmanuscript. Probably most of them are concentrated in one or two journals. Read very recent publications in eachcandidate journal (even in press), and find out the hot topics and the types of articles accepted.

Also consider the high rejection rates of the journals (e.g., Nature, Science, The Lancet and Cell are >90percent), and if your research is not very challenging, focus in more humble journals with lower Impact Factors.

You can find a journal's Impact Factor on its webpage or via Science Gateway.

4. Pay attention to journal requirements in the Guide for Authors.After selecting the journal for submission, go to the web page and download the Guide for Authors, print out it andread the guidelines again and again!

They generally include detailed editorial guidelines, submission procedures, fees for publishing open access, andcopyright and ethical guidelines. You must apply the Guide for Authors to your manuscript, even the first draft,using the proper text layout, references citation, nomenclature, figures and tables, etc. Following this simple tipwill save your time and the editor's time. You must know that all editors hate wasting time on poorly preparedmanuscripts. They may well think that the author shows no respect.

5. Pay attention to the structure of the paper.More and more journals have new types of structure for their articles, so it's crucial to consult the Guide forAuthors. However, in general, most of them follow the same structure:

A section that enables indexing and searching the topics, making the paper informative, attractive andeffective. It consists of the Title, the Authors (and affiliations), the Abstract and the Keywords.A section that includes the main text, which is usually divided into: Introduction, Methods, Results,Discussion and Conclusions.A section that includes the Acknowledgements, References, and Supplementary Materials or annexes.

The general structure of a full article follows the IMRAD format, introduced as a standard by the AmericanNational Standards Institute in 1979, which responds to the questions below:

Introduction: What did you/others do? Why did you do it?Methods: How did you do it?Results: What did you find?AndDiscussion: What does it all mean?

I will discuss structure in more detail in a subsequent article.

6. Understand publication ethics to avoid violations.One of the worst things in science is plagiarism. Plagiarism and stealing work from colleagues can lead to seriousconsequences, both professionally and legally. Violations include data fabrication and falsification, improper use ofhuman subjects and animals in research, and using another author's ideas or wording without proper attribution.It's also possible to commit ethics violations without intending to. Educational resources include the PublishingEthics Resource Kit (PERK) from the Committee on Publication Ethics (COPE) and Elsevier's Ethics inPublication & Research website.

Closing adviceAs you prepare your manuscript, there are some basic principles you should always keep in mind:

Cherish your own work if you do not take care, why should the journal?There is no secret recipe for success just some simple rules, dedication and hard work.Editors and reviewers are all busy scientists, just like you. Make things easy to save them time.

Hence, if you are ready to learn more about preparing a manuscript, look for the next articles in this series and

have good luck!

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11 steps to structuring a science paper editors will takeseriouslyHow to Prepare a Manuscript for International Journals Part 2In this monthly series, Dr. Angel Borja draws on his extensive background as an author, reviewer and editor to giveadvice on preparing the manuscript (author's view), the evaluation process (reviewer's view) and what there is tohate or love in a paper (editor's view).

This article is the second in the series. The first article was: "Six things to do before writing your manuscript."

The AuthorAngel Borja, PhDDr. Angel Borja is Head of Projects at AZTI-Tecnalia, a research center inthe Basque Country in Spain specializing in marine research and foodtechnologies. Formerly he was also Head of the Department ofOceanography and Head of the Marine Management Area. His main topicof investigation is marine ecology, and has published more than 270contributions, from which 150 are in over 40 peer-reviewed journals,through his long career of 32 years of research. During this time he hasinvestigated in multiple topics and ecosystem components, having anample and multidisciplinary view of marine research.

Dr. Borja is the Editor of several journals, including Frontiers in MarineEcosystem Ecology, Revista de Investigacin Marina , Elsevier's Journal ofSea Research and Continental Shelf Research. In addition, he is amember of the editorial boards of Elsevier's Marine Pollution Bulletin, Ecological Indicators and Ocean & CoastalManagement.

Read more about his work on ResearchGate, ORCID and LinkedIn, and follow him on Twitter(@AngelBorjaYerro).

When you organize your manuscript, the first thing to consider is that the order of sections will be very differentthan the order of items on you checklist.

An article begins with the Title, Abstract and Keywords.

Watch a related tutorial by PublishingConnect.The article text follows the IMRAD format,which responds to the questions below:

Introduction: What did you/others do?Why did you do it?Methods: How did you do it?Results: What did you find?AndDiscussion: What does it all mean?

The main text is followed by the Conclusion,Acknowledgements, References andSupporting Materials.

While this is the published structure, however,we often use a different order when writing.

Steps to organizing your manuscriptNext, I'll review each step in more detail. But before you set out to write a paper, there are two important things youshould do that will set the groundwork for the entire process.

The topic to be studied should be the first issue to be solved. Define your hypothesis and objectives (Thesewill go in the Introduction.)Review the literature related to the topic and select some papers (about 30) that can be cited in your paper(These will be listed in the References.)

Finally, keep in mind that each publisher has its own style guidelines and preferences, so always consult thepublisher's Guide for Authors.

Step 1: Prepare the figures and tablesRemember that "a figure is worth a thousand words." Hence, illustrations, including figures and tables, are themost efficient way to present your results. Your data are the driving force of the paper, so your illustrations arecritical!

How do you decide between presenting your data as tables or figures? Generally, tables give the actualexperimental results, while figures are often used for comparisons of experimental results with those of previousworks, or with calculated/theoretical values (Figure 1).

Figure 1. An example of the samedata presented as table or as figure.Depending in your objectives, youcan show your data either as table (ifyou wish to stress numbers) or asfigure (if you wish to comparegradients). Note: Never includevertical lines in a table.

Whatever your choice is, noillustrations should duplicate theinformation described elsewhere inthe manuscript.

Another important factor: figure andtable legends must be self-explanatory (Figure 2).

Figure 2. In a figure or table, all the information must be there to understand the contents, including the spellingout of each abbreviation, the locations mentioned in the text and coordinates.

When presenting your tables and figures, appearances count! To this end:

Avoid crowded plots (Figure 3), using only three or four data sets per figure; use well-selected scales.

Think about appropriate axis label sizeInclude clear symbols and data sets that are easy to distinguish.Never include long boring tables (e.g., chemical compositions of emulsion systems or lists of species andabundances). You can include them as supplementary material.

Figure 3. This is an example of how to best present your data. In the first figure (left), data are crowded with toomany plots. In the second figure (right), data are separated into two datasets, and plots show gradients, which canbe useful for discussion.

If you are using photographs, each must have a scale marker, or scale bar, of professional quality in one corner.

In photographs and figures, use color only when necessary when submitting to a print publication. If different linestyles can clarify the meaning, never use colors or other thrilling effects or you will be charged with expensive fees.Of course, this does not apply to online journals. For many journals, you can submit duplicate figures: one in colorfor the online version of the journal and pdfs, and another in black and white for the hardcopy journal (Figure 4).

Figure 4. An example of the use of color and black and white, for the same data, using the dataset in Figure 1.

Another common problem is the misuse of lines and histograms. Lines joining data only can be used whenpresenting time series or consecutive samples data (e.g., in a transect from coast to offshore in Figure 5).However, when there is no connection between samples or there is not a gradient, you must use histograms(Figure 5).

Figure 5. Example on the use of lines (top left, for time series; lower left for gradients) and histograms (right).Figures on the lower left and right are presenting the same data: the left should be used in the case of gradients(e.g., a latitudinal transect), and the bar format if there is no gradient.

Sometimes, fonts are too small for the journal. You must take this into account, or they may be illegible to readers(Figure 6).

Figure 6. Example of the small fonts used when preparing a draft. The first figure shows charts where the numbersare illegible, compared to the second figure, where they are large enough to read.

Finally, you must pay attention to the use of decimals, lines, etc. (Figure 7)

Figure 7. Inadequate use of lines, number of decimals, decimal separators (use always dots, not commas) andposition of units (above) and its adequate use (below) for a more clear table.

Step 2: Write the MethodsThis section responds to the question of how the problem was studied. If your paper is proposing a new method,you need to include detailed information so a knowledgeable reader can reproduce the experiment.

However, do not repeat the details of established methods; use References and Supporting Materials to indicatethe previously published procedures. Broad summaries or key references are sufficient.

Length of the manuscriptAgain, look at the journal's Guide for Authors, but an ideal length for a manuscript is 25 to 40 pages, doublespaced, including essential data only. Here are some general guidelines:

Title: Short and informative

sub-sections for the convenience of internal cross-referencing, but always taking into account the publisher'sGuide for Authors.

For the data, decide on a logical order that tells a clear story and makes it and easy to understand. Generally, thiswill be in the same order as presented in the methods section.

An important issue is that you must not include references in this section; you are presenting your results, so youcannot refer to others here. If you refer to others, is because you are discussing your results, and this must beincluded in the Discussion section.

Step 4: Write the DiscussionHere you must respond to what the results mean. Probably it is the easiest section to write, but the hardest sectionto get right. This is because it is the most important section of your article. Here you get the chance to sell yourdata. Take into account that a huge numbers of manuscripts are rejected because the Discussion is weak.

You need to make the Discussion corresponding to the Results, but do not reiterate the results. Here you need tocompare the published results by your colleagues with yours (using some of the references included in theIntroduction). Never ignore work in disagreement with yours, in turn, you must confront it and convince the readerthat you are correct or better.

Take into account the following tips:

1. Avoid statements that go beyond what the results can support.

2. Avoid unspecific expressions such as "higher temperature", "at a lower rate", "highly significant". Quantitativedescriptions are always preferred (35C, 0.5%, p

your results are unacceptable in this section.

You should provide a clear scientific justification for your work in this section, and indicate uses and extensions ifappropriate. Moreover, you can suggest future experiments and point out those that are underway.

You can propose present global and specific conclusions, in relation to the objectives included in the introduction.

Step 6: Write a compelling IntroductionThis is your opportunity to convince readers that you clearly know why your work is useful.

A good introduction should answer the following questions:

What is the problem to be solved?Are there any existing solutions?Which is the best?What is its main limitation?What do you hope to achieve?

Editors like to see that you have provided a perspective consistent with the nature of the journal. You need tointroduce the main scientific publications on which your work is based, citing a couple of original and importantworks, including recent review articles.

However, editors hate improper citations of too many references irrelevant to the work, or inappropriate judgmentson your own achievements. They will think you have no sense of purpose.

Here are some additional tips for the introduction:

Never use more words than necessary (be concise and to-the-point). Don't make this section into a historylesson. Long introductions put readers off.We all know that you are keen to present your new data. But do not forget that you need to give the wholepicture at first.The introduction must be organized from the global to the particular point of view, guiding the readers toyour objectives when writing this paper.State the purpose of the paper and research strategy adopted to answer the question, but do not mixintroduction with results, discussion and conclusion. Always keep them separate to ensure that themanuscript flows logically from one section to the next.Hypothesis and objectives must be clearly remarked at the end of the introduction.Expressions such as "novel," "first time," "first ever," and "paradigm-changing" are not preferred. Use themsparingly.

Step 7: Write the AbstractThe abstract tells prospective readers what you did and what the important findings in your research were.Together with the title, it's the advertisement of your article. Make it interesting and easily understood withoutreading the whole article. Avoid using jargon, uncommon abbreviations and references.

You must be accurate, using the words that convey the precise meaning of your research. The abstract provides ashort description of the perspective and purpose of your paper. It gives key results but minimizes experimentaldetails. It is very important to remind that the abstract offers a short description of the interpretation/conclusion inthe last sentence.

A clear abstract will strongly influence whether or not your work is further considered.

However, the abstracts must be keep as brief as possible. Just check the 'Guide for authors' of the journal, butnormally they have less than 250 words. Here's a good example on a short abstract .

In an abstract, the two whats are essential. Here's an example from an article I co-authored in EcologicalIndicators:

1. What has been done? "In recent years, several benthic biotic indices have been proposed to be used asecological indicators in estuarine and coastal waters. One such indicator, the AMBI (AZTI Marine BioticIndex), was designed to establish the ecological quality of European coasts. The AMBI has been used alsofor the determination of the ecological quality status within the context of the European Water FrameworkDirective. In this contribution, 38 different applications including six new case studies (hypoxia processes,sand extraction, oil platform impacts, engineering works, dredging and fish aquaculture) are presented."

2. What are the main findings? "The results show the response of the benthic communities to differentdisturbance sources in a simple way. Those communities act as ecological indicators of the 'health' of thesystem, indicating clearly the gradient associated with the disturbance."

Step 8: Compose a concise and descriptive titleThe title must explain what the paper is broadly about. It is your first (and probably only) opportunity to attract thereader's attention. In this way, remember that the first readers are the Editor and the referees. Also, readers arethe potential authors who will cite your article, so the first impression is powerful!

We are all flooded by publications, and readers don't have time to read all scientific production. They must beselective, and this selection often comes from the title.

Reviewers will check whether the title is specific and whether it reflects the content of the manuscript. Editors hatetitles that make no sense or fail to represent the subject matter adequately. Hence, keep the title informative andconcise (clear, descriptive, and not too long). You must avoid technical jargon and abbreviations, if possible. Thisis because you need to attract a readership as large as possible. Dedicate some time to think about the title anddiscuss it with your co-authors.

Here you can see some examples of original titles, and how they were changed after reviews and comments tothem:

Example 1Original title: Preliminary observations on the effect of salinity on benthic community distribution within aestuarine system, in the North SeaRevised title: Effect of salinity on benthic distribution within the Scheldt estuary (North Sea)Comments: Long title distracts readers. Remove all redundancies such as "studies on," "the nature of,"etc. Never use expressions such as "preliminary." Be precise.

Example 2Original title: Action of antibiotics on bacteriaRevised title: Inhibition of growth of Mycobacterium tuberculosis by streptomycinComments: Titles should be specific. Think about "how will I search for this piece of information" when youdesign the title.

Example 3Original title: Fabrication of carbon/CdS coaxial nanofibers displaying optical and electrical properties viaelectrospinning carbon

Revised title: Electrospinning of carbon/CdS coaxial nanofibers with optical and electrical propertiesComments: "English needs help. The title is nonsense. All materials have properties of all varieties. Youcould examine my hair for its electrical and optical properties! You MUST be specific. I haven't read thepaper but I suspect there is something special about these properties, otherwise why would you bereporting them?" the Editor-in-Chief.

Try to avoid this kind of response!

Step 9: Select keywords for indexingKeywords are used for indexing your paper. They are the label of your manuscript. It is true that now they are lessused by journals because you can search the whole text. However, when looking for keywords, avoid words with abroad meaning and words already included in the title.

Some journals require that the keywords are not those from the journal name, because it is implicit that the topic isthat. For example, the journal Soil Biology & Biochemistry requires that the word "soil" not be selected as akeyword.

Only abbreviations firmly established in the field are eligible (e.g., TOC, CTD), avoiding those which are notbroadly used (e.g., EBA, MMI).

Again, check the Guide for Authors and look at the number of keywords admitted, label, definitions, thesaurus,range, and other special requests.

Step 10: Write the AcknowledgementsHere, you can thank people who have contributed to the manuscript but not to the extent where that would justifyauthorship. For example, here you can include technical help and assistance with writing and proofreading.Probably, the most important thing is to thank your funding agency or the agency giving you a grant or fellowship.

In the case of European projects, do not forget to include the grant number or reference. Also, some institutesinclude the number of publications of the organization, e.g., "This is publication number 657 from AZTI-Tecnalia."

Step 11: Write up the ReferencesTypically, there are more mistakes in the references than in any other part of the manuscript. It is one of the mostannoying problems, and causes great headaches among editors. Now, it is easier since to avoid these problem,because there are many available tools.

In the text, you must cite all the scientific publications on which your work is based. But do not over-inflate themanuscript with too many references it doesn't make a better manuscript! Avoid excessive self-citations andexcessive citations of publications from the same region.

Minimize personal communications, do not include unpublished observations, manuscripts submitted but not yetaccepted for publication, publications that are not peer reviewed, grey literature, or articles not published inEnglish.

You can use any software, such as EndNote or Mendeley, to format and include your references in the paper. Mostjournals have now the possibility to download small files with the format of the references, allowing you to change itautomatically. Also, Elsevier's Your Paper Your Way program waves strict formatting requirements for the initialsubmission of a manuscript as long as it contains all the essential elements being presented here.

Make the reference list and the in-text citation conform strictly to the style given in the Guide for Authors.Remember that presentation of the references in the correct format is the responsibility of the author, not theeditor. Checking the format is normally a large job for the editors. Make their work easier and they will appreciate

the effort.

Finally, check the following:

Spelling of author namesYear of publicationsUsages of "et al."PunctuationWhether all references are included

In my next article, I will give tips for writing the manuscript, authorship, and how to write a compelling cover letter.Stay tuned!

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Writing the first draft of your science paper some dos anddontsHow to Prepare a Manuscript for International Journals Part 3Angel Borja, PhDIn this series, Dr. Angel Borja draws on his extensive background as an author, reviewer and editor to give adviceon preparing the manuscript (author's view), the evaluation process (reviewer's view) and what there is to hate orlove in a paper (editor's view).

This article is the third in the series. Previous articles were:

Six things to do before writing your manuscript11 steps to structuring a science paper editors will take seriously

Four steps to preparing your first draftHere is the process I use:

1. Think about the topic you want to present, for some days or weeks.2. Make figures and tables.3. Then write as quickly as possible, as if thinking out loud. Get everything down, ignoring spelling, grammar,

style and troublesome words.4. Correct and rewrite only when the whole text is on paper.

Do not split the manuscript among the co-authors. It is better to write a first complete draft, and then the co-authors can amend and add new text. In this way, the internal coherence of the paper is ensured. Ask eachreviewer to track their changes.

Polishing your manuscriptUse good English

Unfortunately for non-native English speakers, language is an important problem. If the language preventsreviewers from understanding the scientific content of your work, the possibility of acceptance will be loweredgreatly.

At the minimum, you should use the best English you can manage in presenting your high-quality science. Get askilled writer or someone fluent in English to check your manuscript before submission. Now, most publishershave a service of English correction with a cost around 250 ($285) per paper. (For example, Elsevier has anEnglish Language Editing service.)

You must save your readers the trouble of guessing what you mean. Look at this complaint from an editor:

(This) paper fell well below my threshold. I refuse to spend time trying to understand what theauthor is trying to say. Besides, I really want to send a message that they can't submit garbage tous and expect us to fix it. My rule of thumb is that if there are more than 6 grammatical errors inthe abstract, then I don't waste my time carefully reading the rest.

Write with clarity, objectivity, accuracy and brevity, presenting your scientific research in a way that is logical andunderstandable. To improve your language skills, you can practice reading and writing English in other parts ofyour work, for example, by keeping records in English during your research and reading as many papers as youcan in English.

Avoid these common problems:

Sentences that don't follow each other logicallySentences that are difficult to understand by non-initiated readers (e.g., "The Annex IV of the MSFDincludes the definition of GES to be applied by MS."Grammatical errorsSpelling mistakes and typos

Simplify your language

Original: "Numerous studies in recent years, such as those by Miller (1995) and Smith (1998), haveshown that low salinities enhance oyster recruitment."Suggested: "Low salinities enhance oyster recruitment (Miller, 1995; Smith 1998)."

Avoid long sentences

Direct and short sentences are preferred!Long sentences do not make the writing more professional; they only confuse readers.Nowadays, the average length of sentences in scientific writing is about 12 to 17 words.It is said that we read one sentence in one breath. Long sentences choke readers.

Some languages (e.g., Spanish) tend to have long and complicated sentences, which can be expressed withfewer words in English. You have to change your style when writing in English. One idea or piece of informationper sentence is sufficient. Avoid multiple statements in one sentence. In writing the following passage some yearsago, I understood my science well but with 78 words in a single sentence, it's unlikely that anyone would haveunderstood it.

Conversely, applying M-AMBI the explained variability reaches until 43.4%, for linearregression, and 53.8% for logarithmic regression, and the highest explained variability was foundin high and low mesohaline and polyhaline areas (53-63%), whilst the lowest explained variabilitywas in the oligohaline area (6%), being the mismatch in the comparison of both methods in termsof degraded-undegraded equivalences was of 16.4% of the cases in M-AMBI, and 12.7% in B-IBI,with a high spatial level of agreement.

After the reviewers recommended using shorter sentences, I modified it to the following:

Conversely, applying M-AMBI the explained variability reaches until 43.4%, for linearregression, and 53.8% for logarithmic regression. The highest explained variability was found inhigh and low mesohaline and polyhaline areas (53-63%). In turn, the lowest explained variabilitywas in the oligohaline area (6%). The mismatch in the comparison of both methods in terms ofdegraded-undegraded equivalences was of 16.4% of the cases in M-AMBI, and 12.7% in B-IBI,with a high spatial level of agreement.

Problems with long sentences:

Length of the manuscriptAgain, look at the journal's Guide for Authors, but an ideal length for a manuscript is 25 to 40 pages, doublespaced, including essential data only. Here are some general guidelines:

Title: Short and informativeAbstract: 1 paragraph (

Dangling modifiers, in which the subject of the main clause is not the doer (e.g., "To improve theresults, the experiment was done again." The experiment cannot improve the results itself. It should be"We did the experiment again to improve the results.")Don't use spoken abbreviations: "it's," "weren't," "hasn't."Never begin a sentence with a numeral: "5 mg of sediment were analysed " Use: "Sediment (5 mg)was analysed "Single-digit numbers should be spelled out; numbers of two or more digits should be expressed asnumerals (you can write "four samples" or "25 samples"). In a sentence containing a series of numbers, atleast one of which is more than one digit, all of the numbers should be expressed as numerals. (Of the 21samples, 1 was muddy, 6 gravel, and 14 sandy.)

To make the reviewer's life easier Keep the text and layout style consistent throughout the manuscript by using the same font (usuallyTimes New Roman) and font size in the text, figures and tables. Double line spacing and 12-point font ispreferred; this makes more convenient for reviewers to make annotations. Margins of 3 cm are also usefulfor reviewers.Number all pages! This is very important because it helps reviewers show you the parts to be amended.Number each row in the text (it is easier to identify the position of the comments from the reviewers).Pay attention to the abbreviations; they should be defined on the first use in both abstract and the maintext (also in the legends of figures and tables). Some journals even forbid the usage of abbreviations in theabstract. Refer to the journal's Guide for Authors to see the requirements for abbreviations.

The AuthorDr. Angel Borja is Head of Projects at AZTI-Tecnalia, a research center in the Basque Country in Spainspecializing in marine research and food technologies. Formerly he was also Head of the Department ofOceanography and Head of the Marine Management Area. His main topic of investigation is marine ecology, andhas published more than 270 contributions, from which 150 are in over 40 peer-reviewed journals, through hislong career of 32 years of research. During this time he has investigated in multiple topics and ecosystemcomponents, having an ample and multidisciplinary view of marine research.

Dr. Borja is the Editor of several journals, including Frontiers in Marine Ecosystem Ecology, Revista deInvestigacin Marina, Elsevier's Journal of Sea Research and Continental Shelf Research. In addition, he is amember of the editorial boards of Elsevier's Marine Pollution Bulletin, Ecological Indicators and Ocean & CoastalManagement.

Read more about his work on ResearchGate, ORCID and LinkedIn, and follow him on Twitter(@AngelBorjaYerro).