Read more about the article Impact of floods on fish in headwater streams
Eastern Cape redfin minnows (Pseudobarbus afer) (Photo credits: Bruce Ellender)

Impact of floods on fish in headwater streams

Human impacts such as pollution, habitat degradation and invasive alien species threaten freshwater fishes, and as a result of these impacts, fishes in headwater streams are often cut off from larger populations in the river.

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No time to waste in dealing with a biodiversity-debt crisis

Recently there have been a series of debt crises in economies around the world, from Greece to Argentina to the U.S.A.  Unfortunately we also have a global biodiversity-debt crisis. These debt crises share one important feature in common—managers need to respond to the emergency.

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Read more about the article Climate change detected in our National Parks
Flood damage to the Skukuza golf course following an extreme period of rainfall in 2012. Events like this one are predicted to increase in future with more variable and extreme rainfall. (Photo credit: Nicola van Wilgen)

Climate change detected in our National Parks

Most of us have heard that climate change is likely to impact our lives in the next few decades, but in many instances the reality of climate change has not been made apparent. One of the key questions is what will happen to our national parks and the biodiversity that they conserve?

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Read more about the article Movement mysteries of largemouth bass
Surgical insertion of acoustic transmitters into largemouth bass (Photo credit: Olaf Weyl)

Movement mysteries of largemouth bass

Largemouth bass (Micropterus salmoides) are a popular and valuable sport-fish for anglers. They were introduced into South Africa in 1928, and have since been widely distributed across southern Africa.

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Read more about the article Finding the right enemy to control an invasive mealybug
The mealybug Delottococcus aberiae De Lotto (Photo credit: Cristina Navarro-Campos)

Finding the right enemy to control an invasive mealybug

A mealybug (Delottococcus aberiae De Lotto) of southern African origin has recently been noticed in Spain where it causes severe distortions on young citrus fruit.  Since the local natural enemies are ineffective in controlling the mealybug, and farmers rely on chemicals to protect their fruit.

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