The influence of phylogenetic relatedness on species interactions among freshwater green algae in a mesocosm experiment
نویسندگان
چکیده
Patrick A. Venail*†, Anita Narwani, Keith Fritschie‡, Markos A. Alexandrou, Todd H. Oakley and Bradley J. Cardinale School of Natural Resources and Environment, University of Michigan, Ann Arbor, MI 48109-1041, USA; Section of Earth and Environmental Sciences, Institut F.-A. Forel, University of Geneva, 10 Route de Suisse, CP 416, 1290 Versoix, Switzerland; and Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106-9620, USA
منابع مشابه
Phylogenetic distance does not predict competition in green algal communities
Biologists have held the tenet that closely related species compete more strongly with each other than with distant relatives since 1859, when Darwin observed that close relatives seldom co-occur in nature and suggested it was because they competitively exclude one another. The expectation that close relatives experience greater competition than distant relatives has become known as the ‘‘compe...
متن کاملExperimental evidence that evolutionary relatedness does not affect the ecological mechanisms of coexistence in freshwater green algae.
The coexistence of competing species depends on the balance between their fitness differences, which determine their competitive inequalities, and their niche differences, which stabilise their competitive interactions. Darwin proposed that evolution causes species' niches to diverge, but the influence of evolution on relative fitness differences, and the importance of both niche and fitness di...
متن کاملEvolutionary relatedness does not predict competition and co-occurrence in natural or experimental communities of green algae.
The competition-relatedness hypothesis (CRH) predicts that the strength of competition is the strongest among closely related species and decreases as species become less related. This hypothesis is based on the assumption that common ancestry causes close relatives to share biological traits that lead to greater ecological similarity. Although intuitively appealing, the extent to which phyloge...
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The present study investigates the influence of an organophosphorus pesticide, namely Dimethoate, and cadmium on biomarkers of the green alga, Spirogyra sp., in a 14-day experiment. For so doing, it has exposed Spirogyra sp. to 0.0, 100, 200, and 400 mg L-1 of Dimethoate and/or 1 mg L-1 of cadmium chloride (CdCl2) to observe a reduction in chlorophyll a and b level in Spirogyra sp., exposed to ...
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The present study investigates the influence of an organophosphorus pesticide, namely Dimethoate, and cadmium on biomarkers of the green alga, Spirogyra sp., in a 14-day experiment. For so doing, it has exposed Spirogyra sp. to 0.0, 100, 200, and 400 mg L-1 of Dimethoate and/or 1 mg L-1 of cadmium chloride (CdCl2) to observe a reduction in chlorophyll a and b level in Spirogyra sp., exposed to ...
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تاریخ انتشار 2014