Biodiversity and Grazing in the Tropical Savannas
On a small scale such as a patch or paddock , this change might be acceptable , but at a property and landscape scale , the consequences are serious . For example , droughts are prolonged periods where property and landscape thresholds are tested and potentially breached . Broad changes in vegetation cover and hydrology occur if the system is not resilient .
The grazing systems become less productive and native plants and animals are seriously affected , creating negative feedback ( more pressure ) on the ecosystem services provided . Consider the following illustration of two pathways .
Resilient Not Resilient
Key
Wet season
Square-tailed Kite Desert Mice
Brown Treecreepers
Rufous Bettong
Crested Pigeon Goannas
Dry season
Grey-crowned Babbler
Termites
Nutrients
Noisy Miner Water infiltration
Fairy-wren
Water run-off
Wet season
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