کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4379642 1617661 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Water sources for cyanobacteria below desert rocks in the Negev Desert determined by conductivity
ترجمه فارسی عنوان
منابع آب برای سیانو باکتری ها زیر سنگ بیابان در صحرای نقب تعیین شده با رسانائی
کلمات کلیدی
صحرای نقب؛ سیانو باکتری ها؛ اب؛ هدایت؛ Hypoliths؛ باران؛ شبنم
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی

We present year round meteorological and conductivity measurements of colonized hypolithic rocks in the Arava Valley, Negev Desert, Israel. The data indicate that while dew is common in the Negev it is not an important source of moisture for hypolithic organisms at this site. The dominance of cyanobacteria in the hypolithic community is consistent with predictions that cyanobacteria are confined to habitats supplied by rain. To monitor the presence of liquid water under the small Negev rocks we developed and tested a simple field conductivity system based on two wires placed about 0.5 cm apart. Based on 21 replicates recorded for one year in the Negev we conclude that in natural rains (0.25 mm to 6 mm) the variability between sensor readings is between 20 and 60% decreasing with increasing rain amount. We conclude that the simple small electrical conductivity system described here can be used effectively to monitor liquid water levels in lithic habitats. However, the natural variability of these sensors indicates that several replicates should be deployed. The results and method presented have use in arid desert reclamation programs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Global Ecology and Conservation - Volume 6, April 2016, Pages 145–151
نویسندگان
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