کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10615351 | 987233 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of light regimes on the microstructure of the reef-building coral Fungia simplex
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We studied the effect of light availability on the skeletal aragonite microstructure of the reef-building coral Fungia simplex. Scanning electron microscopy (SEM) of samples transplanted from light to shade conditions showed that the latter promoted a well-defined crystal alignment and dense packing. An X-ray diffraction (XRD) study of newly formed coral skeleton tissue showed a twofold increase in coherence length along the c-axis under shade conditions, while coherence length along the perpendicular direction remained essentially unchanged. These findings indicate that under shade conditions controlled calcification occurred by extension of the crystalline domains along the c-axis of the prismatic aragonite crystals. The reduced calcification rate under shade conditions was in keeping with the lower algal densities and the higher chlorophyll a content of the zooxanthellae that mediate the calcification process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 25, Issue 1, January 2005, Pages 81-85
Journal: Materials Science and Engineering: C - Volume 25, Issue 1, January 2005, Pages 81-85
نویسندگان
Liat Abramovitch-Gottlib, David Dahan, Yuval Golan, Razi Vago,