Výsledky vyhledávání

Akademický článek

Quantification of the photosynthetic performance of phosphorus-deficient Sorghum by means of chlorophyll-a fluorescence kinetics

Autor: Ripley, B S, Redfern, S P, Dames, J F

Chlorophyll fluorescence induction curves have been used as a sensitive tool for screening the photosynthetic performance of plants. Experimental treatments involving nitrate supply and chilling stress have been shown to affect fluorescence induction

Externí odkaz: http://hdl.handle.net/10962/d1005978

Zobrazit plný text záznamu

Akademický článek

Pollination biology of Bergeranthus multiceps (Aizoaceae) with preliminary observations of repeated flower opening and closure

Autor: Peter, C I, Dold, A P, Barker, Nigel P, Ripley, B S

Little is known about pollination of the Aizoaceae (Mesembryanthemaceae). There are sparse reports of generalist pollination in the family by a variety of insects (predominantly bees). Furthermore, most species are self-incompatible in cultivation. I

Externí odkaz: http://hdl.handle.net/10962/d1005970

Zobrazit plný text záznamu

Akademický článek

Comparing models for predicting species' potential distributions : a case study using correlative and mechanistic predictive modelling techniques

Autor: Robertson, M P, Peter, C I, Villet, Martin Herrer, Ripley, B S

Models used to predict species’ potential distributions have been described as either correlative or mechanistic. We attempted to determine whether correlative models could perform as well as mechanistic models for predicting species potential dist

Externí odkaz: http://hdl.handle.net/10962/d1011879

Zobrazit plný text záznamu

Akademický článek

Environmental limits to the distribution of Scaevola plumieri along the South African coast

Autor: Peter, C I, Ripley, B S, Robertson, M P

Scaevola plumieri is an important pioneer on many tropical and subtropical sand dunes, forming a large perennial subterranean plant with only the tips of the branches emerging above accreting sand. In South Africa it is the dominant pioneer on sandy

Externí odkaz: http://hdl.handle.net/10962/d1011617

Zobrazit plný text záznamu

Akademický článek

An empirical formula for estimating the water use of Scaevola plumieri

Autor: Peter, C I, Ripley, B S

Transpirational water loss of Scaevola plumieri (L) Vahl. (= Scaevola thunbergii Eckl. & Zeyh.) (Goodeniaceae), a dune pioneer plant along the eastern and southern coasts of South Africa, was measured over a wide range of atmospheric conditions and r

Externí odkaz: http://hdl.handle.net/10962/d1005971

Zobrazit plný text záznamu

Dissertation/ Thesis

The ecophysiology of selected coastal dune pioneer plants of the Eastern Cape

Autor: Ripley, B S

Understanding the mechanisms and adaptations that allow only certain species to thrive in the potentially stressful foredune environment requires a knowledge of the basic ecophysiology of foredune species. Ecophysiological measurements were conducted

Externí odkaz: http://hdl.handle.net/10962/d1003791

Zobrazit plný text záznamu