Harmful algal bloom

Quality:

Harmful algal bloom - bloom of algae that causes harm to the nearby ecosystem. Article “Harmful algal bloom” in English Wikipedia has 99.1 points for quality (as of July 1, 2025). The article contains 384 references and 33 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

In June 2025 the article “Harmful algal bloom” was edited by 2 authors in English Wikipedia and written by 3 authors in all languages.

Since the creation of article “Harmful algal bloom”, its content was written by 511 registered users of English Wikipedia and edited by 584 registered Wikipedia users in all languages.

The article is cited 503 times in English Wikipedia and cited 660 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #417 in August 2018
• Global: #2933 in August 2018

The highest popularity rank from 2008:

• Local (English): #449 in August 2018
• Global: #1838 in August 2018

There are 8 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Harmful algal bloom		99.1166
2	Greek (el) Επιβλαβής άνθιση φυκών		54.8613
3	Portuguese (pt) Proliferação de algas nocivas		25.4623
4	Serbian (sr) Црвена плима		23.1192
5	Galician (gl) Floración de algas nocivas		20.4365
6	Arabic (ar) انتشار الطحالب الضار		19.4378
7	Persian (fa) شکوفایی جلبکی زیان‌بار		16.3232
8	Korean (ko) 유해조류		1.0633

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) Harmful algal bloom		6 298 350
2	Portuguese (pt) Proliferação de algas nocivas		573 285
3	Korean (ko) 유해조류		3 057
4	Arabic (ar) انتشار الطحالب الضار		1 417
5	Persian (fa) شکوفایی جلبکی زیان‌بار		950
6	Galician (gl) Floración de algas nocivas		684
7	Serbian (sr) Црвена плима		629
8	Greek (el) Επιβλαβής άνθιση φυκών		546

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Harmful algal bloom		11 988
2	Portuguese (pt) Proliferação de algas nocivas		82
3	Arabic (ar) انتشار الطحالب الضار		51
4	Korean (ko) 유해조류		31
5	Serbian (sr) Црвена плима		19
6	Persian (fa) شکوفایی جلبکی زیان‌بار		18
7	Greek (el) Επιβλαβής άνθιση φυκών		15
8	Galician (gl) Floración de algas nocivas		12

The following table shows the language versions of the article with the highest Authors’ Interest.

#	Language	AI award	Relative AI
1	English (en) Harmful algal bloom		511
2	Portuguese (pt) Proliferação de algas nocivas		49
3	Greek (el) Επιβλαβής άνθιση φυκών		6
4	Galician (gl) Floración de algas nocivas		6
5	Persian (fa) شکوفایی جلبکی زیان‌بار		4
6	Serbian (sr) Црвена плима		4
7	Arabic (ar) انتشار الطحالب الضار		2
8	Korean (ko) 유해조류		2

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

#	Language	AI award	Relative AI
1	English (en) Harmful algal bloom		2
2	Greek (el) Επιβλαβής άνθιση φυκών		1
3	Arabic (ar) انتشار الطحالب الضار		0
4	Persian (fa) شکوفایی جلبکی زیان‌بار		0
5	Galician (gl) Floración de algas nocivas		0
6	Korean (ko) 유해조류		0
7	Portuguese (pt) Proliferação de algas nocivas		0
8	Serbian (sr) Црвена плима		0

The following table shows the language versions of the article with the highest number of citations.

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In English Wikipedia the most popular articles on that day were: 98th Academy Awards, Michael B. Jordan, Paul Thomas Anderson, Jessie Buckley, Sinners (2025 film), Amy Madigan, Autumn Durald Arkapaw, Maya Rudolph, Sean Penn, Academy Awards.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information