Other toxicant input Unknown No information available Hydrocarbon Range of invertebrates Hydrocarbon show no evidence of contamination from hydrocarbon residues Santos unlikely to impact S. apama Noise pollution No correlation between Uncertain whether current shipping levels offshore shipping traffic (2.4 vessels per and may interrupt potential abundance or biomass of movement and migration unknown how pathways for S. apama; S. apama shipping noise per se may entering and exiting Point impact Lowly spawning grounds S. apama Biotic influences Predators Dolphins, New Zealand Where possible, fur seals, snapper, correlations made Australian salmon, between S. apama yellowtail kingfish (see abundance and annual details below) catch of predators; spikes in abundance of predators may however occur, but difficult to know whether these impact abundance of S. apama Dolphins, Dolphins to feed on No estimates of local Delphinus and dolphin abundance, but delphis Tursiops S. apama anecdotal reports of an aduncus increase in abundance of resident dolphins NZ fur seals, Unlikely to influence Relative abundance & S. abundance; further foraging intensity of Arctocephalus forsteri apama A. research underway in USG unknown forsteri
Other toxicant input Unknown No information available Hydrocarbon Range of invertebrates show no evidence of hydrocarbon residues Hydrocarbon contamination from Santos unlikely to impact S. apama Noise pollution No correlation between current shipping levels (2.4 vessels per and abundance or biomass of S. apama; unknown how shipping noise per se may impact S. apama Uncertain whether offshore shipping traffic may interrupt potential movement and migration pathways for S. apama entering and exiting Point Lowly spawning grounds Biotic influences Predators Dolphins, New Zealand fur seals, snapper, Australian salmon, yellowtail kingfish (see details below) Where possible, correlations made between S. apama abundance and annual catch of predators; spikes in abundance of predators may however occur, but difficult to know whether these impact abundance of S. apama Dolphins, Delphinus delphis and Tursiops aduncus Dolphins to feed on S. apama No estimates of local dolphin abundance, but anecdotal reports of an increase in abundance of resident dolphins NZ fur seals, Arctocephalus forsteri Unlikely to influence S. apama abundance; further research underway Relative abundance & foraging intensity of A. forsteri in USG unknown
impacts-shipping-cuttlefish.docx