In 2023, the gold / Asian clam ( Corbicula fluminea ) was first recorded in Aotearoa New Zealand (Aotearoa‐NZ). This non‐native species (NNS) could impact Aotearoa‐NZ freshwater ecosystems more than any previous invader. It could alter food webs, physical habitats and water clarity, disrupt nutrient cycling and restructure plankton / macroinvertebrate / fish assemblages. I have reviewed clam impacts on trophic ecology, water c...

The gold clam ( Corbicula fluminea) is a highly invasive freshwater mollusc, which was detected in Aotearoa New Zealand in 2023. Currently, C. fluminea has only been observed in the Waikato catchment, but there is significant concern it will spread across the country. There is an urgent need to identify suitable habitat for the species beyond the Waikato, given the high probability of spread. Here, we used a Maximum Entropy (M...

With field, laboratory, and modeling approaches, we examined the interplay among habitat structure, intraguild predation (IGP), and parasitism in an ongoing species invasion. Native Gammarus duebeni celticus (Crustacea: Amphipoda) are often, but not always, replaced by the invader Gammarus pulex through differential IGP. The muscle‐wasting microsporidian parasite Pleistophora mulleri infects the native but not the invader. We...