کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4536360 1626439 2014 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Margalef's mandala and phytoplankton bloom strategies
ترجمه فارسی عنوان
ماندالا مارلبف و استراتژی های فیتوپلانکتون پر رنگ است؟
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی

Margalef's mandala maps phytoplankton species into a phase space defined by turbulence (A) and nutrient concentrations (Ni); these are the hard axes. The permutations of high and low A and high and low Ni divide the space into four domains. Soft axes indicate some ecological dynamics. A main sequence shows the normal course of phytoplankton succession; the r–K axis of MacArthur and Wilson runs parallel to it. An alternative successional sequence leads to the low A-high Ni domain into which many red tide species are mapped. Astronomical and biological time are implicit. A mathematical transformation of the mandala (rotation) links it to the classical bloom models of Sverdrup (time) and Kierstead and Slobodkin (space).Both rarity and the propensity to form red tides are considered to be species characters, meaning that maximum population abundance can be a target of natural selection. Equally, both the unpredictable appearance of bloom species and their short-lived appearances may be species characters. There may be a correlation too between these features and long-lived dormant stages in the life-cycle; then the vegetative planktonic phase is the ‘weak link’ in the life-cycle. Red tides are thus due to species which have evolved suites of traits which result in specific demographic strategies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part II: Topical Studies in Oceanography - Volume 101, March 2014, Pages 32–49
نویسندگان
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