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Type (a) Kahikatea·: forest - totara, .riikau, r~arew·a With occasional puriri, pukatea, northern rata, 'lacebark and nmu.

Type (b) TarAire-totara forest - putaputaweta, kahlkatea, towai, mamangi .with occasional hinau, miro, matai and northern rata. ·

Type (c) Puciri-kow.hai ·forest ·- kah1katca with oc£asiooal to tara and kanuka.

Fauna Not surveyed, but being conii~ous with Puketl Forest, may share many of the faunal values assodated with the parent block.

Sl.gidfl.cunce Comprises a c~mtinuous environinental gradient from Puketl EcolOgical District

in~o Kaikohe Ecological District.

Its. geomor.J?})Ological base inc hides rock types of limited extent iO the Kaikohe Ecological District, whkh contributes .to this site being representative of the ecological units present.

~(a) and (c) ar~ uncommon vegetation·types in the E<;ological District and . RegH)n, wlth typ,c (c) being the only example of its type in the Ecological 'District.

Performs' a mid-catchmein/ripari.an·protection function and helps Unk forest· remnants to the· south, to the large block of Pu.keti.

. DONALDSONS ROAD BUSH

Survey no.· P05/010

Survey date 1 June 1994

.Grid reference . P05 755 545

Area

· Altitude·

7l.6 ha

40-240 m asl

Bcologlcul umt (a) T.otara·kahikatea forest on hillslope .

(b) Tarai~puriri-kahik~tea forest on hillslope

Landform/geology Steeply sloping d'issected hill country in the upper catchment and more gently ·sloping h~IIsides in the lower catchment of Mangakahla Complex sandstone and · m'udstone, with a small area of Akarana Group calcareous mudstone with

s.andstone beds in the eastern catchment.

Vegetation. A cluster of fragmtnted forest remnants ranging in size from 5 ha io 20 ha, some of which are linked by manukaJkanuka shrubland. Associated canopy species · Include:

67

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· MIHI ROAD BUSH

Su~ey no. P05/0ll

SurVey date . 1 June 1994 .

Grid reference P05 775.535 ·

Area 159.3 ha '•

Altitude 80-257 m ~~

Ecological unit (a) Ka.raka~taraire forest on hillslope

(b) Totara:kahikatea forest onhillslope

. ·Landform/geology This moderate sl~ed secondary forest remnant is situated on steeply dissected hill country of Te Kuiti Group. plus Akarana Group calcareous mudstone and sandstone lithofacies in' the north and Mangakahia Complex sandstone in the . . . . .. south.

~~~ . .

The karaka-taraire forest type (a) has frequent purirt, totara. and occasional · towai.

Flg~re 24: Mihl Road Bush, P05/011

Elich' grid J8 1000 m ll 1000 m and tq'Uals 100 ha.

f,;. forest.

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Stg;llflcance ~ . . . . . . Habitat for threatened f•una: ·

A linkage, upper ·catc~m~nt and riparian p~otection func tion is implied ..

Figure: 25. Okoro Stream BU$h, POS/012 . B:tch grid I_& 1000 m x 1000 m and equals .IOOha.

f .• forest.

FOREST ROAD BUSH ..

Survey no. P05/013

Survey date · 2 June 1994

Grid reference · P05 .733·577

Area 27._1 ha (forest 25.1 ha; shrubland 2 ha)

Altitude ·2o-4o m asl

Ecological unit (a) Manuka-totara-kahikatea forest on gentle hillslope

(b) Kahikatea forest on gentle hillslope

Landform/geology · The low relief hills are underlain by Akarana Supergroup alternating sandstone and mudstone non.h of Forest Road and Mangakahla Complex sheared ·.

' mudstones. to the south.

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TE TOKE STREAM SHRUBLAND

Survey no .. . P05/014

Survey date · 2 June 1994

Grid reference P05 715 535 . . .

Area 743.2 ha (forest 107.8 ha; shrubland 635.4 ha)

Altitude 40-26o m asl

Bcologtcat unit .. (a) Manuka·totara-tan,ekaha shrubland on hillslope (35%)

(b) Totara-kahi.katea forest on alluvium (2%)

(c) To_wai·taraire forest on hillslope(5%)

(d) .Totara-taralre forest on hillslope (2%)

(e) Totara-manuka-towai forest on hillslope (5%)

(f) Kauri forest on ridge (<1%) .

(g) Manuka shrubland on hillslope (50%)

' . . Landform/geology In the east a Kerikeri Volcanic basalt plateau remnant dominates with basalt talus d·ownslope. The remainder is underlain by deeply dissected and weathered . Mangakahia Complex siliceous mudstone with a small area of alluvium adjaceht · to· White Road.

Vegetation A mosaic of vegetation types produced by past · land clea ranee patterns and

' . . . '"' . . strongly dominated. by shrubland.

Asso~iated canopy species include:

Type (a). Manuka-totara-tanekaha shrubland· with oc·c~sionai pockets containing towai,· puriri, c:tbbage tree, kahikatea, taraire, matal, rimu; rewarewa, northern

rata, tawa and miro. . . Type (b) Totara.kaWkatea forest. Very uncommon alluvial forest which includes · cabbage tree, kauri, kanuka, pukatea, karaka, tanekaha, r.imu, towa:i, kohuhu

. and s~mp maire . · .

Type (c) Towai-taraire forest with tanckaha, totara, puriri, mamaku tree fern and nik:lu and occasiopal e.merg~nt rimu, kauri and northern rata occu~ in the

. . . upper catdunent.

Type (d) Totara-taraire for~st with occasional puriri

Type (e) .Totara-manuka-towai fo~st with·. puriri

Type (f) Kauri forest

. Type (g) Manuka shrubland with occasional towaL

Fauna Further survey work is required, especially regarding faunal· values, but NI

brown kiwi (Category ~ threatened _spe~ies), known from forest Ies~ than 3 km · to the east, are likely to be present;

Significance The site may perform a linking function between Pukewharariki Forest to ·the south ·and Puketi Forest to the north. An upper catchment and· riparian prot~ction function is implied.

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COOKS. TV BLOCK

Survey no.

Survey date

· Grid· reference

Area

Altitude

P05/015

. lJune ·1994

_' P05 7i5 535.

27 ha

160;..274 m asl

Ecological unit . (a) Totara·taraire forest ·o~ h~Uslo.pe ( 40%)

(b) Kahikatea-tanekaha~totar:a.. forest ·cin ·hillslope (6()%) . . . . . . . . La.tidform/geology

·'•

Underlain by Kerikeri volcaniCs . forming a basalt plateau remnant on the, . western margin W'ith basalt talus dQwnslope.' Mangakahla Complex siliceous mudstone underlies steep hillslopes to the east.

Vegett~tlon

Cuto~er and secondary forest , It is unfenced and the understorey/regenei"ation

has been suppressed as a result.

Canopy species associated with type (~) above include puriri and towai, With occuional northern rata, .rimu , tanekaha, tawa, kohekobe and pukatea>

. . .

Figure 28. Cooks TV Block, P05/0l5

·Each grid is 1000 in x 1000 m and cquaJs 100 ha.

· f = forest.

·· ...

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Vegetation Tall ;Seco~dary and cutover forest. . .

· Canopy species associated with forest type (a) above include nikau, kahikatea, totara, Griselinfa Iucida and occasional ·tawa, northern rata, pukatea, emergent rimu ·and matai, ·kowhai; t~~kaha; titoki and towai.. .

. . . . .

Associated with the ~kahikatea dominant type (b) are occasional puriri and

nikau . .

Possum and stock damage to this unfenced remnant are severe and may result in

canopy collapse if not addressed.

Fauna : Kukupa . (Category ·B threatened spedcs) and NI brown kiwi (Category A

threatened speCies).

Significance· Habitat for threatt!ned ·fauna.

· . A: linkage. upper c~tchment ~d ripa~an protection function is implied.

· · F~rc i9. Cooks Road Bush No. B, POS/016

Bac,h grid is 1000 rn )( 1000 m·and ~uals 100 h~.

.f• forest.

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Significance A representative site with a diyersity of veget~tion types, including th~ only site for type (f), and exhibiting a diverse matrix of canopy species.

Contains an excellent old growth podocarp element (very large totara present) which is uncommon in the Ecological District and Region.

Habitat for threatened species.

A, linkage, upper catchment and riparian protection function is implied.

Figure 30. Cooks Airstrip Block, POS/017

Each grid Js 1000 m )( 1000 01 and equals 100 ha.

s = ahrubland; t = fon:st.

.. . .

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'Jicolo~lcal unit · (a) Puriri-taraire-totara forest on volcanic flats (9,%)

(b) Kahikatea forest on hillslope (5%)

.. La,ndf_orm/geology Ke:rikeri Volcanic basalt flow remnant, with basalt talus towar.ds the vaUcy of the Waiharakeke Stream and dissected . MingakahJa Complex sandsto.ne in the · . . . . , .. valley. ·:

. ·Vegetation s·cattered · secondary pod9carp/br<;>adleaf forest strongly dominated. by the

· p~riri, taraire and to.tara. ·rn about ~5% ot'the area, totara is co~ple.tely replaced hy ihe · btoadleaf species ·suggestive of the more pure volc;anic' broadieaf forest

to the east of Lake Omaperc. .

:The canopy of type (a) has very few oth~r associated species, but northern rata, towai, rimu and rewarewa occur infrequently.

Associated Wi~h type (b) are frcquen~ rimu, to tara, and . occasion_al rewa rewa and p.uriri:

·Fauna High numbers ofkukupa (Category 8 threatened speci~s) ..

Significance . . ~abitat for threatened species.

The site contains mature hroadleaf and podocarp/broadleaf forest on volcanic.· flats · two u'ncommon assemblages in 'the Ecological District and· nationally a

. . I

.lowland forest type much reduced from its former extent. ·

Some riparian protection and linkage functions are implied.

QKAKA ROAD WETLAND

Survey no.

Survey date.

Grid reference

Area

Altitude

P05/019

2ju.ne 199~

~5 .. 1'12 517

6.9ha

·20 ni asl

Ecological unl~ .

(a) Maouka-cabbage tree-carex association in swamp

(b) Raupo-Carex association in swamp

Landform/geology ·A small freshwater wetland on Holocen~ Valley alluvium.

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HOREKE ROAD SWAMP

Survey no.

Survey date

·Grid refer.ence

Area

Altitude

POS/020 .

19 May ~994

P05 703 512

·s ha

<20m ·.

Ecological unit (a) Raupo-Baumea association in swamp

Landfo·rm/geology A small mineralised freshwater wetland occurring on Holocene Valley alluvium. . : . . .

Vegetation . . .

This small swamp remnant als9 contains frequent cabbage tree; Carex sp. and occasional crack willow and flax·.

Fau~a . . Not surveyed.

Significance . . ... · Further survey work is required for this ' site before its full significance can be · determine.d,· · but much of its .signific~cc lies i~ its· representa,tion , of. an ecosystem which has largely been removed from this Ecologial! District; and

this 1s. ~e of only two ex:unples of this type .In. the. Ecoioglcai Dutnct.

Plgure 33. Horeke Rotd Swamp, P05/Ql0

l!ach grid is 1000 m )( 1000 oi. and equals 100 hll. w .. wetland.

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Vegetation As.~pciated canopy species . of type (a) above Include frequent i:anekaha with occasional puriri, · rimu, rewarcwa, taraire and ~be regionaJir uncommon kawaka ..

Frequent ·gorse is associated with the manuka . dominant shrub land, approximately 10 ha of which was.cieared in 1997.

Sjgnjficant flora ·

Kawaka · (rcgio_naily significant).

·Fauna Not surveyed.

Significance· Representative example of.type (a), arisia:~g from its size and the diversity of other species present. . -

: Th~ significance of the site also. lies in its role as a· forest lin.kage. ~etwccn the highly valued forest of Pukewharariki arid the large PUketi tract to ·the north.

F~rther survey work will help to further define its. significance.

. WAIHOAN.G~ BUSH

Sutvey no~ POS/023

S~rvey dat~ . 18 May 1994

Grid reference · ·P05 785 490 .

Area 100.4 ha (forest 84.5 ha; shrubland 15.9 ha)

Altitude 110-220 m asi ·

· Ecolog,calunit· (a) Taraire-puriri forest on steep hUlslopc

(b) Kah.ikatea 'forest on toeslope

(c) Manuka·totara shrubland on hillslope

Landform/geology A Kerikeri volcanic basalt escarpment with bo.ulder talus overlying Mangakahia Complex siliceous mudstone hillsides and Mangakahia Complex sandstone valley..

Vegetation . A moderately large broadleaf dominant forest remnant.

Associ~tted can<?PY species: · .. ..

Trye (a) . includes. frequent · to.tara, kohekohe and towai, with occasional kahikatea, rewarewa, rimu and emergent kaufii:

Type (b) includes'totara and occasimial puriri. . .

Type (c) Includes frequent mamaku and locally frequent mahoe. Gorse is locally · c'omnion. · Mapq·u, maman~i. hahg.ehange and pate are also present.

·Possums, stock and . goats are · severely impacting upon the site's biological. integrity with ;~t least ane species, northern rata, reported present in 1978, now

·. ' . apparently gone.

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·· -. . PUKEWHARARIKI FOREST

Survey no.

Survey date

Grid referenc~

P05/024

18.May 1994

P05 740 460 . .

Area 2292.4 ba (forest 1525.6; shrubland 758.6 ha; wetland 8.2 ha) ..

Altitude 30-359 m asl

Ecological unit (a). Towai-rewarewa forest on hillslope.

. . (b) Cabbage tree-manuka forest on· hillslope

. . (c) Kahikatea forest on alluvium·

(d) Towai·taraire forest on hillslope . .

(e) Totara-manuka forest on hillslope

(f) Taraire forest on hillslope . . .

(g) Kauri-kawaka forest on ridge · ·

. (h).IUmu-totara .. mlro-kahikatea forest on ridge and hillslope

~l) Raupo reedland in swamp ·

Latulfo1*m/geology The niost extensive ··forest w.ithin the .Kaik.ohe Ecological District, Pukewharariki is al~ost exclusively underlain by Mangakahia . Complex sandstone.

Vegetation Th~ site . contains areas of low-altitude ·unmodified podocarp/broadleaf forest which is suffering· from the effects of browsing ·animals such as goats, pigs, possums and stock.

Associated canopy species include: . . . . . .

Type (a) Towai-rewarewa forest includes frequent kahikatea with occasional pukatea, northern rata, puriri, tawa, k3fluka and taraire.

_Type (b) Cabbage tree"manuka forest includes -frequent towai and nikau.

Type (c) Kahikateil forest constitutes <5% of $e site and includes· occasional· pukatea and totara. ·

Type (d) Towal-taralre forest includes kanuka, purif;'it' kohekohe; emergent northern rata and · rimu, tanekah!l, totara, kabikatea, rcwarewa, and the regionally significa!lt kawaka and monoao.

Tn)e (e) Totar;t-inanuka forest indqdes kahikatea.

Type (f) Taraire forest includes totara, tawa, rewarewa and tanekaha ·with occasional towai, rimu, puriri, kohekohe, kahikatea and nikau.

Type (g) Kauri-kawaka forest - only a small area but some large trees including kawaka >25 m tall of'l m diameter and totara >2 m 4iameter.

Type (h) Riniu-totara-mlro-kahikatea 'forest- rimu is abundant with .totara, miro and kahikatea common, all emergent over taraire and towai. Kauri, kawaka, mat~i, monoao, north~fn rata, tawa, rewarcwa and puriri are occasional.

Type (i) Raupo reedland includes occasional manuka.

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· Significant flora

Within the least modified portions, species uncommon in the Ecological ·District such as black maire, kotukutuku (Fuchsia excorticata), Mett·ostaet·os carwllnea, as well as the rare yellow-flowered form of Metrostderos fulgens survive under a canopy containing ten sp~cies of gymnosperm including ka~aka and monoao (regionally significant).

Fauna Nl brown kiwi (Category A threatened species), .kukupa (Category B threatened species) ·and ·kauri snail (Cat-egory C threatened species), the· regionally signifi~ant pied tit, the Northland endemic snails L~area turrlculata watpoua, and Ryttaa aunntae,as well as the uncommon Pertpatus sp. The ornate skin~ ( Cyclodtna ornata) (regionally significant) is also present.

. Sigtllficance Outstanding. representative· values containing the best example of matur~ podocarp forest in Northland outside of Puketi Forest, with some of the largest and most dense stands of kawaka in Northland. It is the only site in the Ecological District for types ~) and (h), as well as one of only two examples of type (a) and one of only three examples of··type (b), as weH as including examples of alluvial podoca:rp forest and mineralised freshwater wetland.

Habitat for several threatened; endemic and regionally significant fauna.

Site of botanical diversity.

The largest forest area ·remaining with the Kaikohe · Ecological -District, Pukewharariki is centCC~:l to any flow of species which may occur between the iarge forests ofWairna/Mataraua and Puketi. Its .large sizc.and upper catchmt:nt/ riparian protection functions also a~d to its significance.

It is a regionally important soil site, containing uncommon e~amples ofWatkare ·and Whirlnaki yellow-brown earths (Arand c~ at. 1993).

The site includes approximately 25 ha of stewardship land of the Mangatoa Block arid 79'i.' ha of the Pukewharariki Forest, comprising 3-separate blocks .

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Figure 37. Guth,des Blcx:k, P05/0l5'

Each grid Is 1000 m x 1000 m and equ'als 100 ha.

s = shrublznd; f "' forest.

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Ecological unit (a) Towai forest on hlllslope

(b) Totara-tanckaha-manuka forest on hillslope

(c) Taraire forest on hillslope

Landform/geology . The site i~ underlain· by Ke!ikeri volcanic basalt flow on the western side· of th~ ·valley; Mangakahia Compfex sandstone on the east.ern side of the val1ey:, and

: some alluvium in .the ~lley floor.

· · Vegetation A sec·ondary and cutover f~rest remnant in a sttep.y dissected valley catchment

· of. the Punakitere River . . ·

Associated canopy·specles of forest type (a) include frequent taraire, rewarewa, kahikatea and tanekaha ~ith occasional totara;puriri, tawa and manuka. Kauri

. is locally common .

In type (b), Haltea saltcljolia is l9cally common.

Associated with typo( c) are frequent puriri and ~OWal with occasional emerge~t ~orthern rata, ·with k~hekohe, nikau and rimu. Emergent kauri Is. l~all:y common.

Fauna . Not surveyed,. but Nl brown kiwi are known from ~thee forest rcnmants in. the area.·

Significance A representative site for types (a) and (c) due to the conspicuous kauri component,· uncommon in this Ecological District.·

A mid-catchment and .riparian protection-function is implied. Further survey work is required before the full significance of this site can be assessed. . .

This site is part of ~he Mangatoa Stewardship Block administered by the

· Department of Conservation.

MONUMENT 8USH

Survey no.

Survey date

Grid reference

Area

Altitude

POS/027

18 May 1994

POS 809 435.

62.2 ha (forest 45 ha; shrubland 17.2 ha) . .

180-260 m asl

·. Ecological unit (a) .Towai ~orest on hillslope (25%)

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{b) Taraire forest on hillslope (30%)

(c) Manuka shrubland on hill~lope (20%)

(d) Kahikatea forest on alluvium (15%)

(e) Cabbage trcc-manuka forest on alluvium (5%)

(i) Totara_shrubland on gentle slope (5%)

Landfo·rm/geology . . The site Is underlain by Mangakahia Complex sandstone with pockets of · alluvium on the eastern edge.

Vegetation A diverse mosaic of cutover and· secondary forest with shrubland linking the forest remnants.

Type (a) Towai forest includes frequent taraire,' totara, tanekaha and rewarewa . . .

with occasional rimu, purirl, tawa; pukatca and northern rata. Kauri is locally common ort the ridge.

Type (b) Taraire -forest incl_udes frequent towai, rewarewa, tanekaha with occ~sional tawa, kahikatea, ememerit kauri and rimu .

Type · (c) Manuka shrubla~d ~nc.iude.s oc~asional }!racopbyllum, and· links riparian vegetation in two catchments.

'Ty~- (d) Kahikatea forest includes frequent p.ukatea with occasio~al to tara and puriri.

Type (e) Cabbage tree-manuka forest includes fre_queilt putaputawcta and occasional swamp maire.

Type (o Totara shrubland . manuka is Lo~ally common, and towai and mamaku frequent:

Mamaku, gorse and tobacco weed are abundant on the margins.

Fauna Not surveyed.

Significance Type (a) is a representative site due to _ the conspicuous kauri. component, a representative site for types (c) · and (d), and type (f) is one of only tliree examples recorded in the Ecological- District.

This site requires funper survey work before Its full value can be assessed, but itS . diversity of forcst/shrubland types and presence of alluvial forest in dose

. . . . .. proximity to the h~ghly . valued· Pukewharariki Forest makes it pf considerable ·

repreSentative ratue.

Upper catchment and riparian protection values are implied.

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Panna Not surveyed ..

Significance A representative site due to its· conspicuous· kauri component which is. . . . . ' . uncommon i~ the Ecological District.

· Ar{ :upper catchment/riparian protection function is implie.d.

RESERVOIR BUSH . . ...

Survey no. · P05/029

SuiYey date · 17 ·May 1994

Grid reference P05 826 457

Area ·t 12.6 ha (forest 66.6 ha; shrub land 46 ha)

Altitude 210-373 m asl.

Ecological urdt · · (a) Towai·taraire· forest on hillslope (90%)

(b) Totara-kahikatea-towai forest on hlllslope (10%)

La:1!dform/geology Situated on the eroded. remnatlt of an old Kerikeri volcanic (Horeke) basaltic volcano. ·

Vegetation A .mode~ate siz~d secondary forest remnant.

c~·riopy spcci~~·. ass()ciated with forest type (a) include puriri, rew~rewa and .

occasional totilta~

Pu~iri .is ass<>eiated with type (b),

· Threats·to the site include possums, goats, ~tock .and. weed invasion.

SiBnlficant flora

Coprosma rotuntfifolia is common in the understorey. Although it is a wide~ spread species; it i~ not common l~ Northland. . . ·

Fauna Kukupa (Category 8 threatened species), kauri sn.ail (Category C threatened species), and probably NI brown kiwi (Category A threatened species).

97

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HOW ROAD. BUSH

Survey no.

Survey d~tte

. Grid reference ·

Area

Altitude

POS/030 . . . .

17 May 1994

P05 840 410

30;2-ha . . .

· 160-180 nt asl

Ecologlctil unit -(a) Totara forest on volcanic fiats ·

. . (b) Kahikatea-totara forest on volcanic fiats

Landform/geology .. Surface of an old Kerikeri volcanic basalt fiow dissected by streams.

Vegetation·. . . Four small secondary podocarp do-minant forest remnants.

Canopy species associilted wiih forest typ.e (a) include . frequent taraire, . rewa.reWa and occasional rimu, kahikatea, northern rata, kauii andtitoki. .

~- . .

·P4Un4

Kauri snail (Category c threatened species)._

Significance Representative of an uncommon association of podocarp dominance on . volcanic fiats, with type (a) exhibiting a variety of canopy species. ·. . . . Habitat for threaten_ed fauna.

. Some riparian buffering functions.

. Figure 4~. How Road Buh, POS'i030.

Eac:h grid Is 1000 m x 1000 m and equals loO ha. f"' fon:st.

99