Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

عدد واقعی جلبکهای شناسایی شده و مورد تایید جهان

با سلام

عدد واقعی جلبکهای شناسایی شده و مورد تایید جهان بر حسب پاسخ پروفسور مایکل گوئیری مدیریت سایت Algaebase به گونه ای واضح بیان شده است که در پاسخ به برخی تقاضاها از جانب بازدیدکنندگان بلاگ بشرح زیر در اختیارتان قرار میگیرد.

Dear Colleagues

Somebody asked me to make some estimates of macroalgal numbers and I thought that the list might be interested in the answer. There are of course a
number of conceptual difficulties: what's a macroalgal; indeed, what's an alga?

Here are the current numbers according to Kingdom
: Phylum and Class


 Ochrophyta [Phaeophyceae: 1745;

 Xanthophyceae (Vaucheria and Bothrydium only): 406]: 2151


 Rhodophyta: 5900 (not including unicellular species)
Charophyta [Charophyceae 282 and Klebsormidium 42]: 324
Chlorophyta [Bryopsidophyceae 501; Ulvophyceae 887; Trebouxiophyceae (Prasiolales only) 31; Chlorophyceae (Oedogoniales only):
179] 1597

There are thus about 10,000 species of eukaryote macroalgae amongst the 23,500 or so species of eukaryotes in AlgaeBase, of which 3,000 or so
belong in the kingdom Protozoa
(dinoflagellates and euglenoids).

To generalise, chromistan and green-plant-line algae number about 20,000 of which half are macroalgae. Of these 10,000 macroalgae about 8,700 are marine and the remainder are freshwater and/or terrestrial. As a matter of interest, the microalgae seem more even distributed: about half are marine and the other half freshwater.

These numbers are from AlgaeBase, which is of course a work in progress. The numbers for each taxon, or indeed any currently used taxon, can be
checked on:


نویسنده : رضا رمضان نژاد قادی ; ساعت ۳:۳٢ ‎ق.ظ روز پنجشنبه ٢ مهر ۱۳۸۸