摘要:

A quantitative study was made on occurrence, density, seasonal periodicity, and associations of 27 species of harpacticoid copepods collected from. 6 species of marine algae at Island Bay, Wellington, New Zealand, from April 1973 to March 1974.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515702

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

The reproductive status of 20 species of alga‐dwelling harpacticoid copepods at Island Bay, Wellington, New Zealand, was investigated from April 1973 to March 1974. These data form the first comprehensive account of the breeding regime in natural populations of truly phytal species.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515703

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

The pea crabPinnotheres novaezelandiaeFilhol (Brachyura: Pinnotheridac) infests the musselPerna canaliculus(Gmelin) in Wellington Harbour. The crab passes through the same post‐planktonic stages as other pea crabs. The number of eggs hatching increases over summer, although females can be found incubating eggs at any time of the year. Shellfish below the level of low water neap tide are more heavily infested than those above this level. Damage to the host is restricted to erosion of the demibranchs and nodule formation on the mantle.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515704

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Substrate and infauna samples were taken at four tidal levels (mean high water springs, high mid beach, low mid beach, and mean low water neaps) with a 0.0625 m2quadrat at 14 North Island beaches in New Zealand. The distributions of Peracarida (Crustacea) were correlated with sediment type, tidal height, and degree of exposure; sampling began in March 1972 and was completed in November 1973.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515705

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Axiothella serratan. sp. (Polychaeta: Maldanidae) is described and illustrated from intertidal sands of Porirua Harbour, New Zealand (41° 6′ S, 174° 52′ E). It has 22 setigerous segments, and lacks asetigerous preanal segments; the mid‐ventral anal cirrus is conspicuously lengthened. The species is compared with otherAxiothellaspecies.A. cataliniaHartman, 1969 is herein transferred toMaldanella.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515706

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Semidiurnal variations in the depth of the thermocline observed near the shelf edge north‐west of Cape Egmont are probably caused bv an internal tide generated at around 200 m depth over the continental slope. The observations suggest that in this region an internal tide, with amplitude of about 20 m, propagates onto the shelf with a speed of approximately 0.5 m·s−1and a wavelength of about 22 km.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515707

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Aquifers occur in basalt deposits infilling valleys in the Western Springs catchment of Auckland City, and they discharge into small streams incised along the edges of major lava flows. Total run‐off from the area is >0.261 m3·s−1. Analyses by standard methods of twelve subsurface and surface waters show that flowing groundwaters have a low level of pollution (dissolved oxygen x = 7.6 mg·l−1, abuminoid nitrogenx =0.038 mg·l−1, and total solids x = 188 mg·l−1). Surface waters and stagnant groundwater have high, but varying levels of biological activity. Although much of the dissolved solid content of all the waters (e.g., Ca2+, Mg2+, Na+, K+, SiO2) is consistent with the chemistry of the rocks of the catchment, particularly the glassy volcanic tuffs, for surface waters various sources of pollution also make significant contributions (e.g., leaking sewers, sewage overflows, combustion of fossil fuels, fertilisers, zoo animals). Apart from its iron level, the moderate volume (∼.0.13 m3·s−1) of flowing groundwater is of suitable quality for domestic, industrial and irrigation needs.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515708

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Phosphorus and nitrogen were measured in stream run‐off from the four catchments of the Taita Experimental Basin (41° 11′ S, 174° 58′ E). The land is used as exotic conifer forest, native forest, and hill pasture. Multiple regression analysis was used to estimate chemical losses per unit area in floods and at low flows.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515709

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

A method of aging the elephant fishCallorhinchus miliiBory de St Vincent 1823, is described. Alternating light and dark layers, seen in cross‐sections of the dorsal spine, are assumed to be laid down annually as in other fish. Ages obtained from spine sections are identical with ages obtained from interpretation of modal peaks in the length‐frequency graphs. Males mature at 3 y old, at approximately 50 cm fork length; females at 4.5 y old and 70 cm. The significance of this in relation to the New Zealand fishery for elephant fish is discussed.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515710

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

The age of pufferfishUranostoma richei(Freminville) in Lyttelton Harbour, South Island, New Zealand is described from analyses of length‐frequency distributions and growth zones in otoliths. Length‐frequency analysis is adequate only for aging smaller fish. The validity of using growth zones in otoliths is checked by examining the pattern and time of zone formation. Length‐weight relationships are established and growth rates calculated. Compared with males, females grow faster (2.4cm·y−1; 2.1 for males), attain a larger size (to 18 cm and 120 g; 12 cm and 40 g for males) and live longer (to 7 y; 5 for males).

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515711

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor