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1. 

   Variable community responses to herbivory in fire-altered landscapes of northern Patagonia, Argentina

   Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T Kitzberger E Raffaele T Veblen

   Landscapes in northern Patagonia have undergone dramatic changes in fire regimes over the last century. Superimposed on this changing vegetation mosaic are impacts from introduced herbivores. In this paper we identify synergistic interactions developing into positive fire-herbivory feedbacks that maximise...

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2. 

   Joint action toxicity of spent lubrication oil and laundry detergent against Poecilia reticulata (Telostei: Poeciliidae)

   Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AdebayoA Otitoloju

   Single and joint action bioassays using spent lubrication oil, laundry detergent and a mixture of both (based on a 1:1 ratio of their 96h LC50 values) against the guppy Poecilia reticulata were carried out. On the basis of 96h mortality...

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3. 

   Estimation of pesticide mixture interaction in Nile tilapia (Oreochromis niloticus) using survival analysis

   Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: KC Kanu --- , Nigeria NH Amaeze --- , Nigeria AA Otitoloju --- , Nigeria

   The acute toxicity of the pesticides atrazine, mancozeb, chlorpyrifos and lambda-cyhalothrin, acting singly and jointly, was assessed on Nile tilapia (Oreochromis niloticus) fingerlings. Median lethal concentration (LC50), median lethal time (LT50), and mixture interaction were estimated, whereas survival analysis was...

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