Tanekaha along the Kaipatiki Creek in Glenfield

This one, standing below Kaipatiki Rd opposite the tennis courts, appears healthy observed with telephoto lens from above the footbridge on the opposite bank
https://inaturalist.nz/observations/24579727

while 10-15m away on the opposite bank this one is dead
https://inaturalist.nz/observations/25153078

[EDIT (observation was mislaid at time of writing this post)]
and this one appears to be dying
https://inaturalist.nz/observations/13880360

and there are some possible dead ones rotting.

The same rotting trunk observed in Dec 18
https://inaturalist.nz/observations/26432413
and June 2019
https://inaturalist.nz/observations/26421081

Old photos suggest several tanekaha of similar size were in this location in 1997-99.

There are several dead and dying beside the path near the upstream entry, while the older one at Rimu Pool further downstream looked vigorous and healthy in winter 2019. In 1997 there were scattered tanakaha along the streambank throughout the site, common in places. Some were observed to be sick in 1999. Most of the ones we have seen so far in this upstream area are dead or dying. Archive observations are being studied for more history.

There is one apparently in reasonable health a few metres from the water's edge and a few metres to the left of the Native Plant Trail going down, leaning slightly over the stream, observed in August 2018

The whole of this tree can be seen in a May 2019 observation from two angles, with telephoto close-ups including the very top, apparently with some small dead lichen-covered branches:
https://inaturalist.nz/observations/24775310

There are two about 30mH, apparently healthy, in dense wild revegetation near the bottom of a steep bank below the road that was rarely if ever accessed for restoration and never by the public (Zone Fb).

This tree

  • https://inaturalist.nz/observations/22876272
    was recently identified from the banktop beside Kaipatiki Rd, using a telephoto lens. It has Madeira vine flowering in its very top, the branches of which are mostly dead, though many green "leaves" and red fruit can be seen.

A repeat observation on May 1 with better images of foliage:
https://inaturalist.nz/observations/24363553

A possible tanekaha beside it, dead:

More about the Madeira infestation:
https://inaturalist.nz/posts/23717-madeira-vine

A significant Tanekaha on the restoration site in 1999 appears healthy at road level, below a retaining wall built to keep the road away from the mature Rimu and Tanekaha on this bank of Rimu Pool:

Just upstream of there is a long high retaining wall built for road construction in 1999, in Zone La, referred to in 1999 as Tanekaha Bank, at the top of Tanekaha Falls. At the lower end of this wall a car was observed upside down in the stream, the result of a recent car accident damaging and bringing down a large kanuka:

Recently declining tanekaha include at least one dead and one dying among a group of Tanekaha under and near the Monterey pine near the entry to the public walkway to Valecrest Place and the Native Plant Trail:

Shortly downstream on the Native Plant Trail, a single tanekaha c.40cmD with a trunk wound about 30cmL, a few metres above the stream and leaning over it, on the opposite, Bayview-side, bank and 2-3m from the Native Plant Trail:

We are unable to assess the health of this one. It has well-spaced foliage on high branches visible only with telephoto lens, and so far the overhead sunlight has prevented a clear image.

A January 1998 observation

  • https://inaturalist.nz/observations/15905326
    showing the trunk of one within a metre of the well-used public footpath from Kaipatiki Rd to Valecrest Place, also used to access the Native Plant Trail which became publicly accessible in 1999 and has been used since, initially by cyclists until it became too rutted, and subsequently by joggers, many of whom who still favour it, enjoying the soft surface (personal communications from joggers June 12018-April 2019).

This tree was observed with sooty-mould like coverage of its trunk in approx 2000-2002, and a few years later had lost all its branchlets.

Recently an iNaturalist member drew our attention to recent Auckland University research suggesting kauri dieback can affect tanekaha. This research was reported here:
https://www.stuff.co.nz/environment/101718676/tanekaha-affected-by-kauri-dieback-study-suggests

Here are all the observations uploaded to date focused on identified or possible tanekaha within the Creek restoration site, including repeat observations of some specimens:
https://inaturalist.nz/observations?order_by=observed_on&place_id=131524&subview=grid&taxon_id=54687&user_id=kaipatiki_naturewatch

That link is to Search results sorted by "Date Observed" to iNat. You can adjust filters to tailor your search and view of observations

One 1998 observation showed a purple discolouration of a leaf, and the photo was titled "tanekaha spray damage". It was taken about a year after a 6 -week 3-man herbicide operation there, targeting massive Elaeagnus bushes lining the streambank on which the tree stood, and shortly after herbicide spraying of kikuyu the entire length of the bank, from the wild revegetation up to the road.

Publicado el abril 22, 2019 09:23 TARDE por kaipatiki_naturewatch kaipatiki_naturewatch

Comentarios

No hay comentarios todavía.

Agregar un comentario

Acceder o Crear una cuenta para agregar comentarios.
SiBColombia
Miembro de la Red iNaturalist   |   Desarrollado por el software de código abierto iNaturalist |   Documentación para desarrolladores