کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4381456 1304072 2010 7 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Invasiveness of Galenia pubescens (Aizoaceae): A new threat to Mediterranean-climate coastal ecosystems
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Invasiveness of Galenia pubescens (Aizoaceae): A new threat to Mediterranean-climate coastal ecosystems
چکیده انگلیسی

Blanket weed Galenia pubescens (Aizoaceae) is a prostrate perennial species native to South Africa. The naturalization in other Mediterranean-climate ecosystems has recently been noted in South-western Australia, California, and Southern Spain. In this paper, the invasiveness of G. pubescens was evaluated by testing a variety of stochastic and biological features and by studying the incipient impacts in two well-differentiated coastal ecosystems of Southern Spain- dunes and salty wetlands. Several features of G. pubescens were found as indicators of invasiveness: (i) the genus Galenia was not represented in native flora, and the majority of the species of the family (Aizoaceae) were alien or invasive; (ii) the growth type of G. pubescens (dense prostrate mats) was not found among the native species; (iii) resprouting ability, growth rates and seed production were within the range of well-known invaders such as Carpobrotus spp and Mesembryanthemum crystallinum L.; (iv) the overlapping in flowering periods (73–94%) with those of native flora and the effective shading (99%) of the G. pubescens mats were considerably high. A significant lower native richness and Shannon's diversity index was found in the invaded plant communities. These results demand the consideration of G. pubescens into the management plans of the Mediterranean-climate coastal ecosystems in order to prevent further dispersal and impacts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Oecologica - Volume 36, Issue 1, January–February 2010, Pages 39–45
نویسندگان
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