ECOlOGICAL. ASSESSMENT...ghost shrimp Callinanassa fliholi are generally characteristic of the lower...

$: ECOlOGICAL. ASSESSMENT...ghost shrimp Callinanassa fliholi are generally characteristic of the lower beach. ... —86 I fr (\ 4(Wharekaho IBeach / 85 Ohuka Beach - r ( U 1 — ...$
ATTACHMENT 1

ECOlOGICAL. ASSESSMENT

Land Development, Resource Consent and Planning Specialists.

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'91 1.0. Summary

II A survey o f inacro-benthos in the surrounds of an existing seawall at Buffalo Beach, Mercury Bay, Whitianga, was conducted on 17 October 2001.

Beach nourishment is proposed along the seaward side of this wall.

The Study Area was typical o f an exposed sand beach in northern New Zealand which is typically low in biodiversity. There are a limited number o f animals which are adapted to cope with the mobile substrate associated with wave action (and at times strong winds) which constantly resort sand - shell deposits along such shorelines. Infauna must continually re-embed themselves or at least repair their temporary burrows. De-watered intertidal substrate is typically difficult for larger animals to burrow into because o f the low water content and large size of the particles; but such firmness makes it easy to crawl on. Little organic

. matter is present in de-watered intertidal sediments and water (and oxygen) circulation is high. As a result the anoxic layer is usually deep and a low organic content means that larger deposit feeders are rare

The profile o f open sandy beaches changes quite markedly on a seasonal basis in response to exposure conditions with high rates of sand removal

p b e i n g associated with storm events.

The following zonation o f New Zealand's open sandy beaches which is based on small burrowing crustaceans (Morton and Miller, 1968) was consistent with the zonation present within the study area.

* Two small crustaceans are the primary colonisers o f the upper shore: a sandhopper Talorchestia quoyana and a sea slater (isopod) Scyphax ornat us.

* Eurydicid isopods and Haustoriid amphipods are generally characteristic o f the middle beach.

* Haustoriid amphipods, the paddle crab Ovalipes catharus and the ghost shrimp Callinanassa fliholi are generally characteristic o f the lower beach.

A harvestable bed of tuatua (Paphies subiriangulala) was present in shallow subtidal sediments o f the study area and the nut shell (Nuclea hartvigiana) and morning star shell (Tawera spissa) was present in offshore sediments at a depth of 3 - 4 metres.

Whilst relatively intact shell material of other bivalves (Mactra discors, Panopea zelandica, Myadora striata, Angulus gainiardi, Zenalia acinaces, Resania lanceolata Spisula aequilatera, Bassina yatei, Dosinia anus, Paphies australis, Perna canaliculus and Austrovenus stütchburyi) and univalves (Zethalia zelandica, Calliostoma selectum, Stuthiolaria spp., Ausirofucus glans, Xymene ambiguous, Phenatoma rosea, Cirsotre,na zelebori, Sigapatella sp. and Se,nicassis pyrun2) were present on the beach, no live specimens of these taxa were collected within the study area.

Brian T, Coffey and Associates Limited, Whangamata.

It appears likely (from a comparison of dune vegetation in the vicinity of

I the Study Area) that the residential dwellings between Buffalo Beach Road and the existing seawall have been developed on an area of foredunes (although it may have included a range o f sand-fixing shrubs such as Coprosma acerosa, Pimelea arenaria, Cassinia spp. and Lupinus arboreus behind dune grasses).

It is not immediately obvious where the most likely zone for dune shrub (pohuehue, mingimingi, manuka, flax and cabbage trees) was before the area was developed but the true sanddune forest community with pohutukawa (Meterosideros excelsa) as the dominant tree species almost certainly existed westward of the present Buffalo Beach Road alignment.

No fatal flaws are anticipated with the beach nourishment proposal in ! terms o f the recolonisation o f the low diversity and low abundance of

open beach communities currently present in the intertidal zone of the Study Area. Most intertidal species present in the Study Area are

! expected to survive burial with up to 0.6 in depth o f coarse clean sand or to rapidly recolonise the area (within 3 - 4 months) from adjacent undisturbed habitat following a beach nourishment event.

The development o f residential properties between Buffalo Beach Road and the existing seawall appears to have displaced an area o f foredune grasses and possibly the Cassinia zone of a natural sand dune community.

I T h e existing seawall has been constructed within that zone where fore dunes and their associated sand dune grasses would normally migrate in

I r e s p o n s e to medium to long term erosion and accretion events.

At this time, as the constructed seawall is seaward o f the undisturbed foredune communities to the south, it is clearly a physical obstacle to the

I n a t u r a l inland migration o f foredune communities within the Study Area.

It is more difficult to speculate on the effect(s) o f the constructed seawall

I during any future period o f general accretion (seaward migration of foredune communities in the area). One hypothesis is that foredune communities may form to seaward of the constructed seawall at the time such communities to the south o f the constructed seawall migrate seaward

I p a s t the position o f the constructed seawall.

I

Brian T. Coffey and Associates Limited, Whangamata.

2

C o l o u r Plates (cover plate: eroded foreshore dunes to the south o f the seawall as of October 2001).

KWI

F r Plate 1: View from southern end of the seawall to the north showing contoured sand up

to the top of the wall as o f October 2001MOW

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Plate 2: View from north to south along the wall showing 'wetter (muddier) intertidal zone in front o f the northern section o f wall as o f October 2001

Brian T. Coffey and Associates Limited. Whangamata.

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Plate 3: Rip rap in front of the middle and northern section of the sea wall.

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Plate 4: Flocculent organic matter sourced from a freshwater stream discharging into Mercury Bay on the northern side of the seawall.


I 3

I 2 . 0 . Introduction

The Meritec Group Limited is currently preparing a consent application for an existing seawall

I and for a beach nourishment regime (initial beach nourishment o f I 0 ,000m) to provide for the protection o f residential properties on the foreshore of Buffalo Beach, Mercury Bay, Whitianga (see Figures 1 and 2). We understand sand for the beach nourishment programme will be sourced

I f r o m the Whitianga Waterways Project.

Our subcontracting brief from Meritec was to provide:

I . a footprint survey o f area where beach nourishment is proposed and comment on what may have been in the area now occupied by the existing seawall erected by property owners.

I . advise on the ability of the organisms identified to withstand burial.

• comment on recolonisation o f the area following the beach nourishment action(s)

- I . a description o f the existing ecological environment of the study area and a commentary of the effects o f beach nourishment and the placement o f the seawall.

I 3.0 Methods and Approach

IQuantitative survey work was undertaken on 17 October 2001.

Methodology used for surveying beach and subtidal sites was generally consistent with guidelines j r e c o m m e n d e d by the Department o f Conservation for 3rd order Coastal Resource Inventories1.

A sketch map o f the study area (see Figure 3) was overlain by the NZ map grid projection2 to

I enable position fixing with a 12 channel GPS receiver3 and / or triangulation from surrounding landmarks.

I A chart-recording echo-sounder (Furuno 450) mounted in a power boat was used to produce a plot o f water depth along each of echo-sounding profiles A, B and C. Water depths were corrected for water level at 1200 hours on 17 October 2001.

On the basis o f a constant boat speed along each echo-sounding profile, each echo-sounding profile was scaled to the distance covered to provide a scaled depth profile.

Benthos (both surface dwelling organisms and infauna) were described at each of the 16 sampling sites shown in Figure 3 on the basis o f 5 randomised Cofkyd scoop samples. The Cofkyd scoop takes a 40 cm long box-section sample o f surficial sediments where the box section is 12 cm x 12 cm (surface area o f 0.048 m2). Subtidal Sampling Sites AS2, AS3, BS2, BS3, CS2, and CS3 were sampled by a SCUBA diver. Subtidal sampling Sites ASI, BS1 and CSJ and intertidal Sampling Sites Al l , Al2, A13, B1 I, B12, B13, CI I, C12 and C13 were sampled at low tide on the afternoon o f 17 October 2001.

Biological taxa were separated from each sample using a 0.5 mm sorting tray. Specimens recovered from each quadrat were preserved in isopropyl alcohol in Labelled containers of an appropriate size and returned to the laboratory for identification and counting.

2 Geodetic Datum 1949. International Spheroid. EagleTM Explorer


1 Figure 1: Locality Sketch for Study Area.

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IBeach /

85

Ohuka Beach -

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1 U — Existing Seawall (see Figure 2) N

Buffalo Beach Mercury

84 Bay / /

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Whitianga CcK)ks Beach

itianga

I I I I I 51 52 53 54 55 56 57

Map refs. per NZMS 260: TI I, Whitianga.

Field staff also recorded the presence o f macrobiota present on the surface of the seabed in the vicinity o f each sampling site. In the case o f the swimming crab Ovalipes catharus, a diver reported disturbance o f these animals when using the CofKyd scoop at each subtidal sampling site.

Line transect analysis was used to describe surficial features c f the intertidal zone from the seawall to the low tide mark at the three localities shown in Figure 3.

4.0 Results and Discussion

Rip rap associated with the sea wall extends 30 m northward from residential property boundaries to front a reserve area to the south o f the mouth of the Te Wait[ Stream. The northern boundary o f this rip rap is 376 m from the southern tow of the constructed sea wall. The form of the precast blocks used for the primary construction of the seawall is shown in Plate 3 and the Cover Plate.

Brian 1'. Coffey and Associates Limited, Whanganiala.

1 IFigure 2 Inset for Figure 1 showing position of beach nourishment area proposed

I ¼ 1 r a p o n k i \ .

Stream )

I ' 1 Cenennial - 85

Dri VC

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- , •1 .-

• / State Highway 26 ( (Bufflo Beach Road

- Boat Ramp

• N

Ti,Waifl Stream I

Kawakawa Road

/

Proposed Nourishment Area / ( - 50 m width from exisiting sea wall

Tapuupuatea / \ S o a m ( I

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The central and northern sections o f the existing seawall are 1.5 m above the level o f the upper beach. They have a 4 m wide lining of rip rap (up to im diameter rocks - see Plates 2 and 3) on their seaward side and local residents have used a variety of material such as hay bales to support this structure on its landward side.

The southern section of the seawall is not supported by rip rap on its seaward side and the upper beach profile has contoured up to the top o f the wall (see Plate 1).

Dune erosion to the south of the existing wall is shown in the Cover Plate.

Brian T. Coffey and Associates Limited. Whangarnata.

I 6

Figure 3: Location o f Echo-sounding Profiles (A, B and C), Intertidal Line Transects (A, B

I and C) low tide mark as o f 17/10101 and the 16 benthic sampling sites used for a footprint survey of the Study Area

•1 / I — 6 4 8 4 4 0 0 N

I "a i 1 w tide mark as of 17/10/01 -

Echo - I I_-----_ t d i n g

Profile C —6484200 N

{Efl

I Echo sounding Profile B

All t j FAST] 1 A T - 648400 o N

I - •—.-- Trans f A T ] Echo sounding Profile A

I / - I I I

2751300E 2751500E 2751700E

U A scaled depth profile for each o f echo sounding profiles A, 13 and C, offshore of the Study Area is presented in Figure 4.

Line transect data for each o f intertidal transects A, B and C are summarised in Appendix A.

Cofkyd scoop data for each o f the 16 sampling sites shown in Figure 3 are summarised in Appendix B.

There was a relatively uniform fall across the middle and lower intertidal zones to low water level at each of Transects A, B and C (see Colour Plates I and 2).

Below the low water mark offshore of the Study Area there was a rapid drop off to a relatively flat seabed at 3 - 4m depth offshore of Transect A (see echo sounding profile A, Figure 4) and 3m

Brian T. Coffey and Associates Limited. Whangamata.

1 depth offshore o f Transect C (see echo sounding profile C, Figure 4) with an intermediate depth

Ioffshore o f Transect B (see echo sounding profile B, Figure 4).

Figure 4: A scaled depth profile for each of echo sounding profiles A, B and C, offshore of the Study Area showing depth o f Subtidal Sampling Sites AS2, AS3, BS2, BS3, CS2 and CS3 which were sampled by a SCUBA diver. Sampling Sites AS3, BS3 and CS3 were

I 2 9 0 - 310 in offshore of the existing seawall.

0— Echo sounding Profile A

AS!:]

I Water 2 Depth (m)

:___

C 300 in

I 0 Echo sounding Profile B

IS2 Water W a r 2 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ F

B-93 _____________

Depth (m) 3

I 0

Echo sounding Profile C

Water 2 I Depth I S1

(m) p

4

300


I This reflected the proximity o f Transect C and echo sounding profile C to Ohuka Beach relative to Transect A and echo sounding profile A (see Figure 1).

No visually obvious macrobiota were recorded along Transects A, B and C (see Appendix A) or at

ISampling sites Al l , Al2, A13, BI 1, B12, B13, CI 1, C12 or C13.

The paddle crab Ovalipes caiharus was observed (disturbed) by divers at Sampling Sites BS2, CS2,

I A S 3 , BS3 and CS3 (see Appendix B).

A low density o f the polychaete Aglaophamus rnacroura, the sea lice Cirolana arcuata and Isocladus amartus, the aniphipod Haustorius sp., the burrowing amphipod Paracocophium excuvatum, the sea slater Scyphax arnatus, the pill bug Sphaeroma quoyana and the sand hopper Talorchestia chiliensis were sieved from sediment samples at upper intertidal sampling sites (Sampling Sites Al l , BI I and CI - see Appendix B).

I A low density o f Aglaophamus macroura, Cirolana arcuata the polychaete Glycera americana and Orbinia papillosa, Haustorius sp., Isocladus amartus, the worms Pseudonerine sp. and

I Traveria olens, Scyphax ornatus, the nemertean Sipunculus sp. Sphaeroma quoyana and Talorchestia chiliensis were sieved from sediment samples at mid intertidal sampling sites (Sampling Sites Al2, B12 and C12 - see Appendix B)

I A low density o f Aglaophamus macro ura, Cirolana arcuata, Glycera americana, Haustorius sp., 77 Orbinia papillosa, the common shrimp Palaemon affinis, the tuatua Paphies subtriangulara,

Pseudonerine sp., the ghost shrimp Callinanassa fl/ho/i, and the worm Traveria olens were sieved from sediment samples at low intertidal sampling sites (Sampling Sites A13, B13 and C13 - see Appendix B).

A larva o f a freshwater beetle (Elmid) was also present at Sampling Site B13. This was almost certainly sourced from freshwater inflows from Te Waiti / Taraporiki Streams and divers also reported freshwater on the seabed at subtidal sampling sites. Similar material was present within the intertidal zone o f the Study Area (see Plate 4).

A low density o f Aglaophamus macro ura, Cirolana arcuata, Glycera americana, the nut shell Nuclea hartigiana, Orbinia papillosa, the hermit crab Pagurus novaezelandiae, Palaemon affinis, the tuatua Paphies sub triangulara and Traveria olens were sieved from sediment samples at shallow subtidal sampling sites (Sampling Sites AS], BSI and CSI - see Appendix B).

A low density o f Aglaophamus macro ura, Glycera americana, Nuclea hartvigiana, Orbinia papillosa, Pagurus novaezelandiae, Palaemon affinis, Paphies subtriangulata, Ovalipes catharu, the morning star shell Tawera spissa and Traveria olens were sieved from subtidal sediment samples 300 m offshore o f the Study Area (Sampling Sites AS3, BS3 and CS3 - see Appendix B)..

h 5 . 0 Discussion

The Study Area was typical of an exposed sand beach in northern New Zealand which is typically low in biodiversity. There are a limited number o f animals which are adapted to cope with the mobile substrate associated with wave action (and at times strong winds) which constantly resort sand - shell deposits along such shorelines. Infauna must continually re-embed themselves or at least repair their temporary burrows. Dc-watered intertidal substrate is typically difficult for larger animals to burrow into because of the low water content and large size o f the particles; but such firmness makes it easy to crawl on. Little organic matter is present in dc-watered intertidal sediments and water (and oxygen) circulation is high. As a result the anoxic layer is usually deep and a low organic content means that larger deposit feeders are rare

The profile of open sandy beaches changes quite markedly on a seasonal basis in response to exposure conditions with high rates of sand removal being associated with storm events.

Brian T. Cafley and Associates Limited, Whangamata.

I The following zonation o f New Zealand's open sandy beaches which is based on small burrowing crustaceans (Morton and Miller, 1968) was consistent with the zonation present within the study area.

S . Two small crustaceans are the primary colonisers of the upper shore: a sandhopper Talorchestia quoyana and a sea slater (isopod) Scyphax ornatus.

S . Eurydicid isopods and Haustoriid amphipods are generally characteristic of the middle beach.

Haustoriid amphipods, the paddle crab Ovalipes catharus and the ghost shrimp Callinanassa

I fliholi are generally characteristic o f the lower beach.

A harvestable bed o f tuatua (Paphies subtriangulata) was present in shallow subtidal sediments of the study area and the nut shell (Nuclea hartvigiana) and morning star shell (Tawera spissa) were

5 present in offshore sediments at a depth o f 3 - 4 metres,

Whilst relatively intact shell material of other bivalves (Mactra discors, Panopea zelandica,

I Myadora striata, Angulus gairnardi, Zenatia acinaces, Resania lanceolata Spisula aequilatera, Bassina yatei, Dosinia anus, Paphies australis, Perna canaliculus and Austrovenus s:utchbu,yi) and univalves (Zeihalia zelandica, Calliostoma selectum, Stuthiolaria spp., Austrofucu.s glans, Xymene ambiguous, Phenatoma rosea, Cirsotrema zelébori Sigapatella sp. and Semicassis

4 pyrurn) were present on the beach, no live specimens o f these taxa were collected within the study area.

I It appears likely (from a comparison o f dune vegetation in the vicinity o f the Study Area) that the residential dwellings between Buffalo Beach Road and the existing seawall have been developed on an area o f foredunes (although it may have included a range o f sand-fixing shrubs such as

d Coprosma acerosa, Pimelea arenaria, Ca.ssinia spp. and Lupinus arboreus behind dune grasses).

It is not immediately obvious where the most likely zone for dune shrub (pohuehue, mingimingi, manuka, flax and cabbage trees) was before the area was developed but the true sanddune forest community with pohutukawa (Meterosideros excelsa) as the dominant tree species almost certainly existed westward o f the present Buffalo Beach Road alignment.

No fatal flaws are anticipated with the beach nourishment proposal in terms o f the recolonisation o f the low diversity and low abundance o f open beach communities currently present in the

• intertidal zone o f the Study Area. Most intertidal species present in the Study Area are expected to survive burial with up to 0.6 m depth o f coarse clean sand or to rapidly recolonise the area (within 3 - 4 months) from adjacent undisturbed habitat following a beach nourishment event.

The development o f residential properties between Buffalo Beach Road and the existing seawall appears to have displaced an area o f foredune grasses and possibly the Cassinia zone o f a natural sand dune community.

The existing seawall has been constructed within that zone where fore dunes and their associated sand dune grasses would normally migrate in response to medium to long term erosion and accretion events.

At this time, as the constructed seawall is seaward of the undisturbed foredune communities to the south, it is clearly a physical obstacle to the natural inland migration o f foredune communities within the Study Area.

It is more difficult to speculate on the effect(s) of the constructed seawall during any future period of general accretion (seaward migration of foredune communities in the area). One hypothesis is that foredune communities may form to seaward of the constructed seawall at the time such communities to the south of the constructed seawall migrate seaward past the position of the constructed seawall.


I 10

I I

4 4 p I

I

6.0 References

Department o f Conservation, 1991: Second and Third Order Marine Survey Guidelines.

- unpublished adaptation from C. Battershill's and C. Hay's Protocols for Marine Community and Ecological Surveys (in press). File Reference COA 026 CMR-001, Department o f Conservation. P.O. Box 10 420 Wellington.

Morton, J. and Miller M., 1968: The New Zealand Sea Shore. Collins (Pub),London-Auckland.


Appendix A: Line Transect Data

Location -. Date: Recorder: Buffalo Beach, Whitianga 17 October, 2001 Bit

Aerial Photograph refs.: Map refs.: Grid ref.:

- see Figures 1 and 3 -

sec Figures 1 and 3 Transect No.: Transect Bearing: Length of Transect:

Line Transect A 7 V magnetic/-teie 60m Site description (photograph refs) to re-locate transect marker on shoreline

Eastern end of property protection wall at Buffalo Beach as of 17/10/01 (see Figure 3)

CC= Cover Class -

Substrate A —Abundance(m2) 1aTiik 1- 5610 r I = bedrock/ type v = ve,yabund.ant ( > 500 2=a 6- 30% b = tudde,y ( >256mn) a = abunda,u (20-500) 3=,iasriyk4f 31- 509b c=cobbles -pebbles (2-256nun) c=cairarr (6 - 19) 4=morethoizha 51- 75% s-ait I ( <21rrn) o=cxxszsjcn.zl ( <5 5=aimasrall 76-I00% ,n= mud -silt (no vtsib(egrams)

sh = dead shell debris

Distance Water Substrate Vegetation Macroscopic Plants Macroscopic Animals (m) along Depth Cover Class height CC Transect (m) taxa (m) taxa A

0 - top of 0 no visually obvious no visually obvious concrete maroflora macrofauna

wall

0 -5 - sand wedge 0 no visually obvious no visually obvious to top o f maroflora macrofauna concrete

wall (no rip rap) drift line

with wood and shell over dry

sand 5-15 - firm dry 0 no visually obvious no visually obvious

sand and maroflora macrofauna 10% shell

cover 15-44 60% shell 0 no visually obvious no visually obvious

cover over maroflora macrofauna firm dry

j sand ________ 44 - 60 80% shell 0 no visually obvious no visually obvious

cover over maroflora macrofauna firm dry

sand 60m low 40% shell 0 no visually obvious no visually obvious

tide cover over maroflora macrofauna mark firm sand

I



ILocation 1)atc: Recorder: BuffaloBeach, Whitianga 17 October, 2001 fflt

I Aerial Photograph refs.: Map refs.: Grid ref.:

- - - - see Figures 1 and 3

- seeFiguresIand3

Transect No.: Transect Bearing: Length of Transect: LineTransectB 80'_ magnetic / - t a e 65 m

I Site description (photograph refs) to re-locate transect marker on shoreline Middleofproperty protection wall at Buffalo Beach asof17/10/01 (see Figure 3)

- CC=Cover Class S u b s t r a t e - A = Abuiidi.mce (rn2)

/ = a l i 1 - 5 % r / = bed rock / t y p e - v = very abwidant(>5(X) 2 = s . m 6 - 3 0 % b I z , u k k s s ( > 2 5 6 r n 4 a = abundant (20- 500) 3 = , i e a r l y h a 3 1 - 5 0 % c _ cobbles . pebbles (2 - 256 mm) c=a.,inz(6-19)

q 4 = m o r e t h a n / i a ( 5 1 - 7 5 % s = . i r j i r i ( < 2 m n ) o=cxxsu*ml(<.5) 5=a&msst all 76- JW% rn=mud - s i l t ( n o visible grains)

- - _________________________ sh= dead shell debris

Distance Water Substrate Vegetation Macroscopic Plants Macroscopic Animals (m) along Depth Cover Class height CC Transect (m)

- - taxa (m) taxa A


wall 0 - 4 - b 0 no visually obvious no visually obvious

1.5 m coarse maroflora macrofauna d rop rip rap from

I top of wall to upper each

4 -11 - firm sand 0 no visually obvious no visually obvious and 5% shell maroflora macrofauna

cover drift line

with wood and shell

over firm dry

I sand

II - 40 wet sand 0 no visually obvious no visually obvious

- ____________ maroflora

— macrofauna

I 4 5 - 6 5 20% shell 0 no visually obvious no visually obvious

cover over maroflora macrofauna uniform

relatively soft wet

sand 65 m low 40% shell 0 no visually obvious no visually obvious

tide cover over maroflora macrofauna mark sand

I


1


IRLocation Date: Recorder: Buffalo Beach, Whitianga 17 October, 2001 Bit

q Aerial Photograph refs.: Map refs.: Grid ref.:

- see Figures 1 and 3 see Figures 1 and 3

Transect No.: Transect Bearing: Length o f Transect: Line Transect C 85 magnetic / 4 e

- 100 ni

Site description (photograph refs) to re-locate transect marker on shoreline Western end of property protection wall at Buffalo Beach as of 17110101 (sec Figure 3)

CC = Cover Class Substrate A = Abundance (.m2)

1=a&zk 1- 5% r / = bed rock/type v = very abundant ( > 500 2 =an 6- Y b =botdden ( >256,n'n) a = abundant (20-500) 3= ,iearly/s-.sf 31- 50110 c = cobbles -pebbles (2- 256 mm) c =amaai (6- 19) 4 = more than half 51- 75% s =irzrl ( <21rin) o = arn4ai1 ( <5 ) 5=afrnaiuill 76-100010 m=nud - siLt (no visible grains)

sh = dead shell debris

Distance Water Substrate Vegetation Macroscopic Plants Macroscopic Animals (m) along Depth Cover Class height CC Transect (m) - taxa (m) taxa A


wall 0 - 5 - 0 no visually obvious no visually obvious

15 m b maroflora macrofauna drop coarse from rip rap

• top of wall to upper beach

5 - 11 - firm fine 0 no visually obvious no visually obvious sand and maroflora macrofauna 10% shell

cover drift line

with wood and shell

P over dry sand

11 - 100 uniform 0 no visually obvious no visually obvious relatively maroflora macrofauna soft wet

sand 100 5% shell 0 no visually obvious no visually obvious

P cover over maroflora macrofauna uniform

relatively soft wet

sand

I


U

Appendix B: Quadrat Data

Sampling Site All (upper intertidal, Site A)

I Animals common names rcp#1 rep#2 rep#3 repff4 r e p 5 average stdev Aglaophwnus macroura polychaete Cirolana arcuata sea louse Hauscorius sp. amphipod isocladus amarws sea louse Paracocophiwn excuvacuin burrowing amphipod 0 0 0 0 2 0.4 0.89

q Scyphax ornatus sea slater 2 0 0 2 0 0.8 1.10 Sphaerotna quoyana pill bug 3 0 0 0 1 0.8 1.30 Talorchestia chiliensis sand hopper 6 9 4 II 5 7.0 2.92

Sampling Site B I (upper intertidal, Site B) Animals common names rcp#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaopharnus macroura polychaete ! Cirolana arcuara sea louse 0 0 0 0 2 0,4 0.89

Haustorius sp. amphipod 0 I 0 0 0 0.2 0.45 Isocladu.s amartus sea louse 0 0 0 2 0 0.4 0.89

! Paracocophiurn excuvarwn burrowing amphipod 1 0 0 0 0 0.2 0.45 Scyphax ornatus sea slater 0 2 0 2 0 0.8 1.10 Sphaerorna quoyana pill bug Thiorchestia chiliensis sand hopper It) 3 7 2 6 5.6 3.21

I' Sampling Site CI (upper intertidal, Site C)

fl Animals common names rep#1 rep#2 rep#3 rep#4 repl45 average stdev

Aglaophamu .s macroura pot ychaete 0 1 0 0 0 0.2 0.45 Cirolana arcuata sea louse 0 0 0 2 0 0.4 0.89 Haustorius sp. amphipod Isocladus amartus sea louse 0 0 0 0 I 0.2 0.45 Paracocophiwn excuvacum burrowing amphipod () 4 0 0 I 1.0 1.73 Scyphax ornatus sea slater 1 3 0 0 2 1.2 1.30 Sphaeroma quoyana pill bug

_____ _ _ _ Talorchestia chilierisis sand hopper 7 3 8 J 11 6 7.0 2.92

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Brian T. Coffey and Asaoc:ates Limited, Whangarnata.

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Sampling Site Al2 (mid intertidal, Site A)

I Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev Aginophanius macroura polychaete 0 0 0 1 0 0.2 0.45 Cfrolonaarcuata sea louse 0 4 0 2 0 1.2 1.79

I Glycera wnerrcana polychaete 0 0 1 0 0 0 2 04 Haustorius sp. ainphipod Isocladus amarl us sea louse 3 3 0 0 3 1,8 1,64 Orbinia papillosa polychaete Pseudonerine sp. worm Scyphax ornatus sea slater 0 0 0 0 I 0.2 0,45 Sipunculus sp. nemertean 0 1 0 I 0 0.4 0.55 Sphaeroma quoyana pill bug 0 0 0 2 0 0.4 0.89 Talorchestia chiliensis sand hopper

______ Traveria olens worm 0 0 0 1 1 0.4 0.55

Sampling Site B12 (mid intertidal, Site B)

q Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev Aglaophamus macroura polychaete 0 1 0 0 0 0.2 0.45 Cirolana arcuata sea louse 2 0 0 2 3 1.4 1.34 Glycera americana polychaete 1 1 0 o o 0.4 0.5

q Haustorius sp. ainphipod Isocladus amartus sea louse 2 0 0 3 0 1.0 1.4/ Orbinia papillosa polychaete

I Pseudonerine sp. worm 1 0 2 1 0 0.8 0.84 Scyphax ornatu.s sea slater Sipunculus sp. nemertean C) 0 I I 0 0.4 055 Sphaeroma quoyana pill bug 3 4 2 4 2 3.0 1.00 Talorchestia chiliensis sand hopper 4 0 2 3 0 1.8 1.79 Traveria olens worm 0 I 1 0 0 0 0.55

Sampling Site C12 (mid intertidal, Site C) Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

I Aglaophainus macroura polychaete 0 1 0 0 1 0.4 0.55 Cirolana arcuata sea louse 0 2 0 3 0 1.0 1.41 Glycera americana polychaete 0 1 1 0 1 0.6 0.55 Hausoriussp. amphipod 3 0 2 2 0 1.4 1.34

I Isocladusa,nartus sea louse 0 3 0 4 0 1.4 1,95 Orbinia papillosa polychaete 0 0 0 1 0 0.2 0.45 Pseudonerine sp. worm 0 3 C) 2 0 LO 1,41

p Scyphax ornazus sea slater 0 0 1 0 0 0.2 0.45 Sipunculussp. nemertean 0 1 0 0 2 0.6 0.89 Sphaeroma quo yana pill bug 0 2 3 0 0 1.0 1.41 Talorchestia chilienses sand hopper 0 1 2 6 0 1.8 2.49 Traveria olens worm 0 I 0 0 1 0.4 0.55

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Sampling Site A13 (lower intertidal, Site A)______ Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaoplzamos macroura polychaete 0 2 0 2 0 0.8 /10 Cirolana arcuata sea louse Elrnidae (larvae) f.w. beetle larvae

UGlycera americana polychacte i 0 i 0 2 0.8 0.84 Haustorius sp. amphipod 0 0 0 I 0 U i o.s Orbinia papillosa polychaete 2 i 0 1 0 0.8 0.84 Palaemon affinis common shrimp Paphies subrriangulaia tuatua Pseudonerine sp. worm CallinanassajUholi = g h o s t shrimp Traveria olens worm I 0 I 0 0 0 4 0.55

Sampling Site B13 (lower intertidal, Site B) Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaophamus macroura polychaete 0 1 0 2 0 0.6 0.89 Cirolana arcuata sea louse E l i d e (larvae) f.w. beetle larvae 0 0 l' 0 0 0.2 0.45 Glycera americana polychaete 1 1 0 () 0 0.4 0.55 Haustoriussp. amphipod Orbiniapapilkisa polychaete 1 0 2 0 0 0.6 0.89 Palaemon affinis common shrimp I 0 0 0 0 D i 0.45 Paphies subtriangulata tuatua

J Pseudonerine sp. worm Cauinanassafliholi ghost shrimp Traveria olens Iworm 0 1 0 0 0 0.2 0.45

Sampling Site C13 (lower intertidal, Site C) Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaophamus macroura polychaete 0 0 l 0 2 0.6 0.89 Cirolana arcuata sea louse 0 1 0 0 0 0 2 0.45 Elmidae (larvae) f.w. beetle larvae Glycera americana 1polychaete 0 0 2 0 1 0.6 0.89 Hav.szorius .cp. lamphipod 2 1 0 1 1 1 0 0 84 Orbinia papillosa polychaete 2 0 1 0 0 0.6 0.89 Palaenwn affinis common shrimp Paphies subtriangulata tuatua 0 0 0 I 0 0.2 0.45 Pseudonerine sp. worm 0 0 I 0 0 0.2 0.45 C'ailinanassaJUholi ghost shrimp 0 0 0 0 1 0.2 0.45 Traveria olens worm 0 2 0 2 0 1 0.8 1.10

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I

Brian T Coffey and Associates Limited, Whangamata.


Sampling Site AS2 (subtidal 2 m, Site A) Animals common names 1_rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Agluophamus ,nacroura polychaete 0 1 0 0 0 0.2 0.45 Glycera wnericwia polychaete I 0 1 0 1 0.6 0.55 Nactea harn'igiwia nut shell Orbiniapapillosa polychaete 3 0 I 1 0 1.0 1.22 Ovalipes catharus paddle crab

• Pagurus novaezelandiae hermit crab Palaemon affinis common shrimp 0 2 0 0 1 0.6 0.89 Paphies subtriangulata tuatua 1 0 1 0 0 0.4 0.55 Traveria olens worm

Sampling Site BS2 (subt dat 2 m Site B) Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaopho.mus macroura polychacte 0 I 0 0 0 0.2 0.45 Glycera wnericana polychaete 0 1 1 0 0 0.4 0.55 Nuclea hartvigiana nut shell 1 2 0 2 0 1.0 JXYJ Orbinia papillosa polychaete 2 I 9 1 0 0.8 0.84 Ovalipes cat/torus paddle crab Pa gurus novaezelandiae hermit crab Paluemon affinis common shrimp 0 0 0 1 0 0.2 0.45 Paphies subtriangulata tuatua 0 I 0 0 0 0.2 045 Traveria olens worm 0 0 0 0 1 0.2 0.45

Sampling Site CS2 (subtidal 2 m Site C) Animals common names rep-#1 rep#2 rep#3 rep#4 rep#5 average stdev

Aglaophamus macroura polychaete Glycera americana polychaete 1 0 0 0 1 0.4 0.55 Nuclea hartvigiana nut shell 0 2 0 0 1 0.6 0.89 Orbiniapapillosa polychaete 0 I 0 1 0 0 4 0.55 Ovalipes catharus paddle crab p Pagurus novaezelandiae hermit crab 0 0 1 0 0 U 0.45 Palaemon affinis common shrimp 0 1 0 0 0 0.2 0.45 Paphies subtriangulata tuatua 0 1 0 0 0 0.2 0.45 Traveria olens worm 0 2 0 1 0 0.6 0.89

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I Brian T. Coffey and Associates Limited, Whangamata.

JR Appendix 13. Quadrat Data

Sampling Site AS3 (subtidal flats 300 m offshore)

I Animals common names rcp#1 1 rep2 rep#3 rcp#4 rep#5 javerage stdev Aglaophnmus ,nacroura polychaete 1 0 0 2 1 0.8 0.84 Glcera americana polychaete 0 1 0 1 0 0.4 0.55

' Nuclea harrvigiana nut shell 3 0 i 4 0 1.6 1.82 Orbiniapapillosa polychaete 0 3 1 0 1 1.0 1.22 Ovalipes catharus paddle crab p

I Pagurus novaezelandiae hermit crab 0 0 0 1 0 0.2 0.45 Pat'aemon affinis common shrimp 0 0 0 0 2 0.4 0.89 Tawera spissa morning star shell 0 0 0 2 0 0.4 0.89 Traveria a lens worm

Sampling Site BS3 (subtidal flats 300 m offshore)

I Animals common names rep#1 rep#2 rep#3 rep#4 rep#5 average stdev

Agiaophamu.smacroura polychaete 1 0 2 0 0 0.6 0.89 Glvcera americana polychaete 0 0 0

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0 0.2 0.45

I Nuclea harivigiana nut shell 3

- - 4 0 I 1.8 1.64

Orbiniapapillosa polychaete 2 u 0 0 0.6 0.89 Ovalipes catharus paddle crab p Pagurus novaezelandiae hermit crab 0 0 0 0 2 0.4 0.89 Palaemon affinis common shrimp 0 0 0 2 0 0.4 0.89

- Tawera spissa morning star shell 0 0 1 0 1 0 4 0.55 Traveriaolens worm l 0 0 0 0 0.2 0.45

Id Sampling Site CS3 (subtidal flats 300 m offshore)

Animals common names rep#1 replt2 rep#3 I rep#4 I rep#5 averagel stdev Aglaophamus macroura polychaete 0 I 0 0 0 0.2 0.45 -d Glycera americana polychaete 1 0 1 2 0 0.8 0.84 Nuclea hartvigiana nut shell 2 1 3 2 0 1.6 1.14 Orbinia papillosa polychaete 0 3 0 1 0 0.8 1.30

I Ovalipes catharus paddle crab p p Pagurus novaezelandiae hermit crab 0 0 1 0 0 0.2 0.45 Palaemon affinis common shrimp 0 2 0 2 0 0.8 1.10 Tawera spissa morning star shell 0 1 0 0 0 0.2 0.45

• Traveria d e n s worm 0 0 1 I 0 0.4 0.55

I I

Brian T. Coffey and Associates Limited, Whangamata

ECOlOGICAL. ASSESSMENT...ghost shrimp Callinanassa fliholi are generally characteristic of the lower...

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