کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4400975 1307040 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Negative biotic soil-effects enhance biodiversity by restricting potentially dominant plant species in grasslands
ترجمه فارسی عنوان
اثرات خنثی بیولوژیکی منفی باعث محدود کردن تنوع زیستی توسط محدود کردن گونه های گیاهی بالقوه غالب در مراتع می شود
کلمات کلیدی
مکانیسم همزیستی، بازخورد گیاهی و خاک، اندازه فردی، فراوانی گیاهی محلی، تنوع گندم، شدت استفاده از زمین
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


• We tested plant size and local abundance in relation to biotic soil-effects.
• Large but non-dominant plants experienced the most negative biotic soil-effects.
• Biotic-soil effects especially restrict potentially highly competitive grasses.
• Biotic soil effects are especially pronounced in less intensively managed grasslands.
• Negative biotic soil-effects enhance biodiversity in grassland.

Interactions between soil microorganisms and plants can play a vital role for plant fitness and therefore also for plant–community composition and biodiversity. However, little is known about how biotic plant–soil interactions influence the local dominance and abundance of plant species and whether specific taxonomic or functional groups of plants are differentially affected by such biotic soil-effects. In two greenhouse experiments, we tested the biotic soil-effects of 33 grassland species differing in individual size and local abundance. We hypothesized that large plants that are not locally dominant (despite their size-related competitive advantage enabling them to potentially outshade competitors) are most strongly limited by negative biotic soil-effects. We sampled soils at the opposite ends of a gradient in land-use intensity in temperate grasslands to account for putative modulating effects of land-use intensity on biotic soil-effects.As hypothesized, large, but non-dominant species (especially grasses) experienced more negative biotic soil-effects compared with small and abundant plant species. Land-use intensity had contrasting effects on grasses and herbs resulting in more negative biotic soil-effects for grasses in less intensively managed grasslands. We conclude that biotic soil-effects contribute to the control of potentially dominant plants and hence enable species coexistence and biodiversity especially in species-rich less intensively managed grasslands.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Perspectives in Plant Ecology, Evolution and Systematics - Volume 17, Issue 3, 20 May 2015, Pages 227–235
نویسندگان
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