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Auckland, New Zealand

Wilson K.-J.,Lincoln University at Christchurch | Rayner M.J.,Auckland Museum
Global Ecology and Conservation | Year: 2015

Conservation of gadfly petrels, some of the most threatened seabirds, is frequently dependent on long-term research and management. We review 20 years of a program preventing the extinction of the Chatham petrel (Pterodroma axillaris), a New Zealand endemic once declining due to intense burrow competition from another native seabird. Breeding success in the early 1990s was unsustainably low (10-30%). Recovery measures started in 1992 when Chatham petrel burrows were converted and artificial entrances blockaded to exclude broad-billed prions (Pachyptila vittata). Pair and burrow fidelity were enhanced, though prions still posed a threat during Chatham petrel chick-rearing. Breeding success improved when prions were culled, however a less intensive and contentious solution was to introduce burrow flaps in 2001 which reduced interference from prospecting prions. Subsequently, breeding success increased to a mean 80% per annum. Finding burrows, primarily using radio-telemetry, increased those under management from eight in 1990 to 217 in 2010 when spotlight surveys indicated 72% of juvenile birds had fledged from managed burrows. Chick translocations to two other islands and increasing population size (from 200-400 birds in 1990 to an estimated 1400 birds by 2010) has improved the species IUCN status from Critically Endangered in 1990 to Endangered in 2013. © 2014 The Authors.

The yellow-green algae Vaucheria velutina and Vaucheria longicaulis are identified using morphological characters of fertile material from the eastern coastline of Auckland. The former species occurs in extensive low intertidal beds on sheltered, muddy shores. The latter species was found in Orakei Basin, and is a new record for New Zealand. © 2012 The Royal Society of New Zealand.

Derraik J.G.B.,University of Otago | Derraik J.G.B.,Massey University | Early J.W.,Auckland Museum | Closs G.P.,University of Otago | Dickinson K.J.M.,University of Otago
Journal of Insect Science | Year: 2010

The use of morphospecies as surrogates for taxonomic species has been proposed as an alternative to overcome the identification difficulties associated with many invertebrate studies, such as biodiversity surveys. Hymenoptera specimens were collected by beating and pitfall traps, and were separated into morphospecies by a non-specialist with no prior training, and later identified by an expert taxonomist. The number of Hymenoptera morphospecies and taxonomic species was 37 and 42, respectively, representing an underestimation error of 12%. Different families presented varying levels of difficulty, and although the species estimation provided by the use of morphospecies initially appeared to have a relatively minor error rate, this was actually an artefact. Splitting and lumping errors balanced each other out, wrongly suggesting that morphospecies were reasonable surrogates for taxonomic species in the Hymenoptera. The use of morphospecies should be adopted only for selected target groups, which have been assessed as reliable surrogates for taxonomic species beforehand, and some prior training to the non-specialist is likely to be of primary importance.

Ward D.F.,Landcare Research | Early J.W.,Auckland Museum | Schnitzler F.-R.,Landcare Research
New Zealand Entomologist | Year: 2012

Two species of New Zealand Hymenoptera, a colletid bee Leioproctus nunui and a gasteruptiid Gasteruption scintillans, are considered Threatened: Both are ranked Nationally Critical. Twenty taxa are At Risk, comprising two taxa that are Declining with the remainder classified as Naturally Uncommon. A further 47 taxa are Data Deficient, and 669 known species are either Not Threatened or Introduced and Naturalised. © 2012 The Entomological Society of New Zealand.

Nelson W.A.,NIWA - National Institute of Water and Atmospheric Research | Wilcox M.D.,Auckland Museum
New Zealand Journal of Botany | Year: 2010

The brown alga Rosenvingea sanctae-crucis (Ectocarpales, Scytosiphonaceae) is recorded from New Zealand for the first time. It was found in the Tamaki Estuary, Auckland in May 2009, and is considered to be a very recent introduction to the New Zealand region. © 2010 The Royal Society of New Zealand.

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