Posts categorized as Biodiversity

Would you mine a rare population?

The umbrella fern Sticherus tener at a site within the planned Escarpment Mine on the Denniston Plateau. Photo Leon Perrie. © Te Papa.

The Escarpment Mine on the Denniston Plateau has been tentatively approved by the Environment Court, subject to suitable mitigation plans. One of the issues that may be under consideration is what to do about the site’s population of the Sticherus tener umbrella fern. Scoop news report: “…tentative nod for Denniston mine plan”. Sticherus tener has… Read more »

The amazing longfin eel

A longfin eel.  This female hasn't bred yet, and she will do so only once, after swimming to somewhere between New Caledonia and Fiji.  Photo (c) Alton Perrie.

This week the Parliamentary Commissioner for the Environment released a report on the status and management of the longfin eel. It was entitled “On a pathway to extinction?” The report found that the management of longfin eels by New Zealand government agencies was inadequate and failing. It further recommended the cessation of commercial fishing of… Read more »

Three Kings Expedition collects yellow weever, a new record for the area

Three Kings Expedition collects yellow weever, Parapercis gilliesi (family Pinguipedidae), a new record for the area, 13 April 2013. Te Papa

By Clive Roberts The Te Papa fish team currently has two members participating in the Three Kings Islands Marine Expedition. Skilled in fieldwork techniques, collecting, photographing and preserving fishes, Vincent Zintzen and Jeremy Barker are busy underwater surveying and sampling fishes, invertebrates and algae with colleagues during the day, and are up late at night… Read more »

How to learn ferns

  • Close up of the scales of Cyathea (left) and the hairs of Dicksonia (right). Photos Leon Perrie, © Te Papa.
  • Trichomanes venosum. In Trichomanes, the reproductive structures are enclosed by a tubular, often trumpet-like structure. Photo Leon Perrie. © Te Papa.
  • Cardiomanes reniforme, kidney fern. More closely related to Hymenophyllum than Trichomanes, although the reproductive structures are at least superficially more similar to the latter. Photo Leon Perrie. © Leon Perrie.
  • Tmesipteris elongata, a fork fern. More closely related to ferns than to seed plants or lycophytes. Nevertheless, the relationship is a distant one, and it doesn’t look very fern like. There are at least five species in New Zealand, and they are usually epiphytic on tree ferns. Photo Leon Perrie. © Te Papa.

Last weekend I was out with the Kapiti-Mana branch of Forest and Bird, giving them an introduction to ferns. A few weeks back, I gave a similar walking-talk at Otari-Wilton’s Bush in Wellington. Many people find ferns an appealing group to learn. Aside from their iconic status in New Zealand, good learning resources are available, and… Read more »

A few more botanical highlights from the Foxton fieldtrip….and a katipo spider!

  • Taking a break from botanizing Viv McGlynn managed to locate this female Katipo spider under a piece of driftwood in the dunes.
  • Sand coprosma (Coprosma acerosa). The fruit colour of this species can vary but the plants we saw in the dunes near Foxton had striking blue fruit.
  • The keen eyes of Bot Soc member Bev Abbott spotted the tiny fruit of sand gunnera (Gunnera arenaria).
  • The distinctive asymmetric flower of Selliera rotundifolia.

I also spent an enjoyable few days over Easter on the Wellington Botanical Society fieldtrip (see Leon’s blog about the trip). Here are a few more photos from the trip. It is difficult to believe that this tiny native species is in the same genus as the huge Chilean rhubarb. The leaves of this weedy… Read more »

The small and the weedy: Foxton field trip

  • A huddle of prostrate people peering intently at the ground; can only mean a botanical society has fixated on some small plant. Photo © Leon Perrie.
  • The botanical society did not progress far through the tangled swamp forest vegetation of Round Bush/Omarupapako Scenic Reserve. However, we went far enough to encounter karaka (Corynocarpus laevigatus) and to debate its merits in the southern North Island, where some people consider it to be weedy. The large trunk at centre is a podocarp, while the trunk to the immediate left is a tall and reproducing but not particularly old karaka. Karaka seedlings are evident in the foreground. Photo © Leon Perrie.
  • Arrowgrass, Triglochin striata, is not actually a grass, and belongs to the unusual monocot family Juncaginaceae. The arrangement of the flowers and the narrow leaves are distinctive. Photo © Leon Perrie.
  • Intermixed Selliera rotundifolia, with the round leaves, and Lilaeopsis novae-zelandiae, with the jointed linear leaves. Selliera rotundifolia is only found in the south-west of the North Island. Photo © Leon Perrie.

I spent a couple of days of the long weekend with the Wellington Botanical Society, exploring the Foxton area, between Whanganui and Palmerston North. Much of the first and second days were spent in the sand dunes between Himatangi and Foxton Beach, and at Koitiata near Turakina.  Some surprising things can become weedy in the… Read more »

A name change for strap ferns

Reproductive structures on the frond underside of Notogrammitis billardierei. Photo Leon Perrie. (c) Te Papa.

I recently co-authored a paper with Barbara Parris that investigated the scientific classification and naming of New Zealand’s strap ferns. If you’ve spent any time in New Zealand’s forests, you will have almost certainly seen the common strap fern. It has simple, undivided fronds up to 20 cm long, but usually much less. It is… Read more »

Burgess Island – a recovering seabird island

  • Bottlenose dolphins (Tursiops truncatus) accompanied us as we approached the Mokohinau Islands. Photo Alan Tennyson, Te Papa
  • Fig. 1. Team members Jo Peace, Megan Friesen and Derek Bettesworth head towards the Burgess Island lighthouse. Little Barrier Island Hauturu can be seen in the background. Photo Alan Tennyson, Te Papa
  • Fig. 2. Old lighthouse accommodation provided a comfortable base with spectacular views. Photo Alan Tennyson, Te Papa
  • Fig. 5. Black-winged petrels displaying over Burgess Island at night. . Photo Alan Tennyson, Te Papa

By Alan Tennyson, Curator of Vertebrates I was invited by Chris Gaskin (Forest & Bird) and Matt Rayner (Auckland University) to join a party in February 2013 on the Mokohinau Islands to hunt for the nesting grounds of the recently rediscovered New Zealand storm petrel (Fregetta maoriana). This island group lies more than 50 km… Read more »

Learn ferns in Wellington

Loxsoma cunninghamii, in cultivation at Otari-Wilton's Bush.  This is the only species in the genus Loxsoma, and it is only found in New Zealand, where it grows naturally in the northern North Island.  Photo Leon Perrie.

Are you interested in learning more about ferns, and in the Wellington region? Te Papa’s Curator of Botany Leon Perrie is leading a walk through the fernery at the wonderful Otari-Wilton’s Bush: Sunday 24th March 2013, beginning 2pm from the Otari Information Centre.