Invertebrate communities in adjacent Douglas fir and native beech forests in New Zealand

Non-native trees profoundly alter the structure and resilience of native forest ecosystems through direct or indirect effects on ecosystem processes, e.g. by altering invertebrate communities, but such effects are poorly understood in New Zealand. We sampled adjacent stands of the non-native tree Douglas fir (Pseudotsuga menziesii) and native beech (Nothofagaceae) forests and tested whether the overall invertebrate communities varied across forest types.

The spread and distribution of terrestrial planarians (Turbellaria: Tricladida: Geoplanidae) within New Zealand

The New Zealand flatworm, Arthurdendyus triangulatus (formerly Artioposthia triangulata) has become established in the British Isles and the Faroe Islands and its human-mediated spread within Northern Ireland and Scotland is well documented. The geographical distributions within New Zealand of it and two related species, A. australis and A. testacea have always been assumed to reflect the natural distribution patterns.