Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 06:29 AM NZDT

Descripción

Common along roadside on clay soils usually in open ground that is subjected to frequent flooding.

Fotos / Sonidos

Qué

Vida Vida

Observ.

pjd1

Fecha

Enero 29, 2020 08:09 AM NZDT

Descripción

Noted on Poa aff. chathamica. Associated with marram (Ammophila arenaria) that was also rust-infected. Specimens collected.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:09 AM NZDT

Descripción

Not the best images - I took these off my voucher specimen later in the day when the host tissue had dried up and curled inward.

Locally common on marram grass (Ammophila arenaria) in sand dunes.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:16 AM NZDT

Descripción

Locally common on embergeria (Sonchus grandifolius). A new population and the largest one I have yet seen on the islands - this rust is now extinct at the type locality.

Voucher: P.J. de Lange CH3065, UNITEC 11507 (Duplicate: PDD).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:23 AM NZDT

Descripción

Common in swales within dunes. These plants mostly setting seed of with mature seed. A few still flowering. Many plants infected by endemic rust Puccinia embergeriae

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

Scattered plants, some planted, some self-established from these - all derived from the formerly extensive and now nearly extinct natural Euphorbia glauca population at Kaiangaroa.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

Common shrub at back of dunes and on occasion extending into active dunes as a low sprawling shrub.

Fotos / Sonidos

Qué

Moscarda Calliphora vicina

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

Best images I could get of a blowfly - body dull blue-black, very hairy, that was commonly seen visiting the flowers of Hebe (Veronica) dieffenbachii.

Probably Calliphora vicina as seen in this observation visiting the flowers of the same Hebe species https://inaturalist.nz/observations/9666298

Fotos / Sonidos

Qué

Percebe Ganso Lepas anatifera

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

Numerous long dead specimens encrusting a large log washed up on beach.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

= Poa aff. chathamica

This is a distinct sand-binding race of Poa chathamica that probably merits formal taxonomic recognition at the rank of species. Confined to actively moving sand, through which it spreads via stolons. The inflorescences are contracted in a spike-like panicle rather the broadly branched and pyramidal (which is seen in P. chathamica s.s. - see https://inaturalist.nz/observations/18819007, https://inaturalist.nz/observations/1551377, https://inaturalist.nz/observations/18763524, https://inaturalist.nz/observations/18984199). This 'sand dune race' is probably what Leonard Cockayne - who wrote the first vegetation account of the Chatham Islands called Poa billardierei (or rather a name that now applies to that species). Poa billardierei is known from the Chatham Islands only from a single historic collection made by Felix Cox. Assuming he did collect it from there it was evidently already rather scarce. I have never seen that species on the islands and all recent records of it that I have chased up are instead Poa aff. chathamica.

At Kaiangaroa this grass is common in te actively moving sand, often with pingao (Ficinia spiralis).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:36 AM NZDT

Descripción

Locally common in slowly flowing water at outlet of Lake Te Wapu. Formerly common on Rekohu, particularly in Te Whanga now rather scarce - we are not sure why this has happened either.

Branching pattern 'zig-zagged', leaf apices obtuse, inflorescences with 3-4 carpels.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 08:39 AM NZDT

Descripción

Uncommon - as indeed it is on the Chatham Islands. Scattered patches growing on damp sand flats adjacent outlet from Lake Te Wapu.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:07 AM NZDT

Descripción

Common near ecotone of saltmarsh and dune field. Growing amongst Samolus repens var repens, Selliera radicans, Apium prostratum subsp. denticulatum, Triglochin striata and Ficinia nodosa.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:07 AM NZDT

Descripción

Abundant near high tide mark on cobbles lodged between Chatham Schist outcrops - site would be wave swept in storms. Heavily flowering.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:07 AM NZDT

Descripción

Abundant on schist cobbles, gravel and sand at high tide mark. A seasonally abundant species on the Chatham Islands but now becoming scarce over large parts of the North Island. As yet we have no idea why this decline is happening.

Fotos / Sonidos

Square

Observ.

pjd1

Fecha

Enero 29, 2020 09:07 AM NZDT

Descripción

One of many plants seen seriously damaged by the caterpillars of Epyaxa rosearia, an indigenous moth which although common in the main islands of New Zealand is scarce on Rekohu and there (of course) it exclusively feeds on Lepidium rekohuense. Browse pressure such as this cannot be sustained by the Lepidium population which is tethering on the brink of extinction. Control measures were being undertaken to prevent most plants from being browsed but these had ceased for a few weeks over the Christmas break resulting in severe damage on many plants. Hopefully control can now continue as without it we will loose vital adult, flowering and fruiting plants from this population.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:21 AM NZDT

Descripción

One of the few plants that made it through winter to flowering and fruiting. However, even this plant is being browsed by the caterpillars of Epyaxa rosearia. This plant growing in schist sand and gravel deposited by autumnal storms (2019) overlying schist rock within saltmarsh. Saltmarsh dominated by Triglochin striata, Samolus repens var. repens, Oxybasis ambigua and Apium prostratum subsp. denticulatum.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:36 AM NZDT

Descripción

A mature flowering and fruiting plant - images show flowers and developing fruits - note that the flowers have two stamens.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:36 AM NZDT

Descripción

Dead specimen one of several large plants that had been thriving in mid November 2019 and which have now died for , as yet unclear reasons.

Drought may be a factor, or changing vegetation succession, may be an pathogen of some sort - what is clear is that this species cannot sustain losses like this when the population is so low.

Fotos / Sonidos

Square

Observ.

pjd1

Fecha

Enero 29, 2020 09:36 AM NZDT

Descripción

A young plant - one of several seen in open areas of schist sand in an area where previously healthy flowering mature plants have suddenly died (see https://inaturalist.nz/observations/38185378).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:42 AM NZDT

Descripción

Scattered young plants (just starting to flower) growing along strandline on schist sand. These images show a plant with male flowers (female flowers not yet developed on this plant).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 09:43 AM NZDT

Descripción

Unexplained collapse of mature plants that were thriving - see https://inaturalist.nz/observations/31838978. Similar pattern of death as observed in nearby Lepidium rekohuense - see https://inaturalist.nz/observations/38185378. Not sure if this being caused by drought or some other problem. Eitherway numerous formerly healthy plants at this location are now dead.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Common in dune swales. Plants mostly in full fruit (a few still flowering) - so resembling (from a distance) a field of cotton.

Fotos / Sonidos

Square

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

A large specimen growing in dune swale.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Same plant as https://inaturalist.nz/observations/18604485 now in heavy fruit. This specimen, though impressive is not at risk of being swamped by marram grass (Ammophila arenaria).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Thriving amongst pingao (Ficinia spiralis) within dunes - both species derive from past successful plantings. However, this location is slowly being swamped by marram grass (Ammophila arenaria).

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Thriving, alongside Euphorbia glauca in active dune system. These plants stem from past plantings that have taken, self-sown etc. A joy to behold but unless the surrounding mass of marram grass (Ammopila arenaria) is eradicated, this will be a short-lived joy.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Abundant in sand dunes. Probably the largest viable populations of this species in New Zealand now occur on Rekohu (Chatham Island). Sadly even there this species is increasingly under threat from the unchecked spread of marram grass (Ammophila arenaria).

Images of a male plant.

Fotos / Sonidos

Square

Observ.

pjd1

Fecha

Enero 29, 2020 10:58 AM NZDT

Descripción

Locally common in sandy ground being over run by pasture grasses. Fruiting capitula 30 mm diameter.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 11:57 AM NZDT

Descripción

Abundant on beach and along strandline. Fruits without 'horns'.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 11:57 AM NZDT

Descripción

Small plants mostly bearing just male flowers (so early season still). Growing along strand line. Uncommon.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 11:57 AM NZDT

Descripción

Dominant species of coastal turf over lying basalt pillow lava sequence known to locals as 'Splatter Rock'.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 11:57 AM NZDT

Descripción

An impressive population that stems for past attempts to restore dune vegetation and associated forest at this location. Now there are many 100's of plants, all doing exceptionally well.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 12:15 PM NZDT

Descripción

Six plants noted in coastal turf (mostly Selliera radicans) overlying basalt. These plants may or may not have stemmed from the scattering of seed of this species at this location 6 or more years ago. Lepidium rekohuense had been seen once at nearby Cape Young (2006) and there are unconfirmed reports of it being present there at that time. So it is possible that this occurrence of this critically endangered plant is a natural extension of that site. Eitherway delighted as this species is very close to extinction, so any find is a bonus. Also if this population did derived from a past attempted translocation, then it is the first such attempt that sees to have worked for this species (a bonus).

Most of the plants seen fruiting and flowering. The largest severely damaged by moth (Epyaxa rosearia) browse - a frequent problem in the management of this threatened plant.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

Common on Plagianthus regius subsp. chathamicus.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

Commonly seen on the young shoots and foliage of rust infected (Phragmidium violaceum) Rubus polyanthemus.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

A population that stems from past deliberate plantings in 'open' ground and fernland that connects the lower and upper portions of Nikau Bush. These plantings have done exceptional well, including the fact that seedlings, saplings and second generation plants are now being seen at this site, this is good news for this species which is mostly in serious decline on Rekohu (Chatham Island).

Images show a few late season flowering specimens.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

Common on Rubus polyanthemus. Both uredia and telia present. Host plant rather 'unwell' but from experience it always recovers to continue being a cursed weed in this reserve.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

Well past it but you never know. I had though this might be a slime mold, and it reminded me initially of Stemonitis but the 'fuzzy' nature of the fruiting structures seems closer to Arcyria, perhaps A. obvelata. Noted on rotting kopi (Corynocarpus laevigatus) log, forming circular patches (several colonies seen all in this state) up to 20 mm diameter.

Fotos / Sonidos

Observ.

pjd1

Fecha

Enero 29, 2020 05:55 PM NZDT

Descripción

Common in more disturbed portions of reserve. Often trailing up through Plagianthus regius subsp. chathamicus.