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Utakura River
The Utakura River is a river of the Northland Region of New Zealand's North Island. It flows west from its sources northwest of Kaikohe, reaching the Waihou River at the point where it widens to become an arm of the Hokianga Harbour. Long and short-fin eels, smelt, īnanga The common galaxias (''Galaxias maculatus'') or inanga (from the Māori ''īnanga'') is a very widespread Southern Hemisphere fish in the family Galaxiidae. It is a slim, narrow fish with a forked tail and a mottled, spotty pattern, typically ..., torrentfish and redfin bully live in the river. The river is assessed as fair, in a scale between good and poor, as it suffers from turbidity and e-coli and phosphorus pollution. See also * List of rivers of New Zealand References External links * Far North District Rivers of the Northland Region Rivers of New Zealand {{Northland-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Ōmāpere
Lake Ōmāpere is the largest lake in the Northland Region of New Zealand. It is located to the North of Kaikohe. The lake sits within the Kaikohe-Bay of Islands volcanic field. The lake was formed when an ancient lava flow blocked a valley, forming the northern shoreline. It is five kilometres in length and covers 12.3 km², however it is only 2.6 metres deep (and as low as 1.5 m during summer). The lake has few inflow streams, mostly in the southern part of the lake. The Utakura River (south-western margin) is the main outflow which goes to the Hokianga Harbour. The lake catchment is predominantly pasture, with a few areas of native scrub and mature bush. Culture and history Lake Ōmāpere is of great cultural and environmental value to Māori tangata whenua. In May 1845 the Battle of Puketutu, an engagement of the Flagstaff War, occurred at the pā of Hone Heke at Puketutu, on the shores of Lake Ōmāpere. The lake level was lowered between 1903 and 1929, but by 1947 silti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Galaxias
The common galaxias (''Galaxias maculatus'') or inanga (from the Māori ''īnanga'') is a very widespread Southern Hemisphere fish in the family Galaxiidae. It is a slim, narrow fish with a forked tail and a mottled, spotty pattern, typically about long when fully grown. It lives in fresh water, but spawns at river mouths and spends the first six months of its life at sea, returning en masse in spring. Its vernacular names include cowfish, jollytail, common jollytail, eel gudgeon, inaka, native trout, pulangi, puye, slippery tarki, spotted minnow, Falklands minnow and whitebait. Description Common galaxias have iridescent silver eyes, undersides, and gill covers, and some have an iridescent green stripe along the top of their bodies which can be intermittently seen as they swim. Their specific name ''maculatus'' ("spotted") comes from the pattern of dark-mottled, leopard-like spots on an olive-brown background along their upper bodies. This pattern ranges from very subtle to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far North District
The Far North District is the northernmost territorial authority district of New Zealand, consisting of the northern part of the Northland Peninsula in the North Island. It stretches from North Cape and Cape Reinga / Te Rerenga Wairua in the north, down to the Bay of Islands, the Hokianga and the town of Kaikohe. The Far North District Council is based in Kaikohe, and has nine ward councillors representing three wards: Te Hiku (in the north), Kaikohe/Hokianga (in the west), Bay of Islands/Whangaroa (in the east). The council is led by the current mayor of Far North, Moko Tepania, who entered the role in 2022. Geography The Far North District is the largest of three territorial authorities making up the Northland Region. The district stretches from the capes and bays at the northern tip of the Aupouri Peninsula past Ninety Mile Beach to the main body of the Northland Peninsula, where it encompasses the Parengarenga Harbour, Whangaroa Harbour and Bay of Islands (on the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of New Zealand
This is a list of all waterways named as rivers in New Zealand. A * Aan River * Acheron River (Canterbury) * Acheron River (Marlborough) * Ada River * Adams River * Ahaura River * Ahuriri River * Ahuroa River * Akatarawa River * Ākitio River * Alexander River * Alfred River * Allen River * Alma River * Alph River (Ross Dependency) * Anatoki River * Anatori River * Anaweka River * Anne River * Anti Crow River * Aongatete River * Aorangiwai River * Aorere River * Aparima River * Arahura River * Arapaoa River * Araparera River * Arawhata River * Arnold River * Arnst River * Aropaoanui River * Arrow River * Arthur River * Ashburton River / Hakatere * Ashley River / Rakahuri * Avoca River (Canterbury) * Avoca River (Hawke's Bay) * Avon River / Ōtākaro * Avon River (Marlborough) * Awakari River * Awakino River (Canterbury) and its East and West branches * Awakino River (Northland) * Awakino River (Waikato) * Awanui River * Awapoko River * Awarau River * A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pollution
Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants are introduced into these water bodies. Water pollution can be attributed to one of four sources: sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. It can be grouped into surface water pollution (either fresh water pollution or marine pollution) or groundwater pollution. For example, releasing inadequately treated wastewater into natural waters can lead to degradation of these aquatic ecosystems. Water pollution can also lead to water-borne diseases for people using polluted water for drinking, bathing, washing or irrigation. Water pollution reduces the ability of the body of water to provide the ecosystem services (such as drinking water) that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escherichia Coli
''Escherichia coli'' (),Wells, J. C. (2000) Longman Pronunciation Dictionary. Harlow ngland Pearson Education Ltd. also known as ''E. coli'' (), is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus ''Escherichia'' that is commonly found in the lower intestine of warm-blooded organisms. Most ''E. coli'' strains are harmless, but some serotypes ( EPEC, ETEC etc.) can cause serious food poisoning in their hosts, and are occasionally responsible for food contamination incidents that prompt product recalls. Most strains do not cause disease in humans and are part of the normal microbiota of the gut; such strains are harmless or even beneficial to humans (although these strains tend to be less studied than the pathogenic ones). For example, some strains of ''E. coli'' benefit their hosts by producing vitamin K2 or by preventing the colonization of the intestine by pathogenic bacteria. These mutually beneficial relationships between ''E. col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secchi Disk
The Secchi disk (or Secchi disc), as created in 1865 by Angelo Secchi, is a plain white, circular disk in diameter used to measure water transparency or turbidity in bodies of water. The disc is mounted on a pole or line, and lowered slowly down in the water. The depth at which the disk is no longer visible is taken as a measure of the transparency of the water. This measure is known as the Secchi depth and is related to water turbidity. Since its invention, the disk has also been used in a modified, smaller diameter, black and white design to measure freshwater transparency. Similar disks, with a black-and-yellow pattern, are used as fiducial markers on vehicles in crash tests, crash-test dummies, and other kinetic experiments. History The original Secchi disk was a plain white disk and was used in the Mediterranean Sea. Today, a plain white, diameter Secchi disk remains the standard design used in marine studies. In 1899 George C. Whipple modified the original all-white Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redfin Bully
The redfin bully (''Gobiomorphus huttoni'') is a species of freshwater fish in the family Eleotridae endemic to New Zealand. Being amphidromous, it spends part of its life cycle at sea. Males have distinctive bright red patterns and stripes on their fins. Adults grow to an average of total length, with a maximum of . Description Male redfin bullies are the most colourful freshwater fish in New Zealand, with bright red markings on the dorsal, anal, and tail fins, as well as the body and cheeks. Additionally, males have a bluish-green stripe on the outer edge of the first dorsal fin. Only the males have the red colouring; the females have the same patterns, but with brown in place of red. Redfin bullies of both sexes have distinctive diagonal stripes on their cheeks. These stripes are very useful for positive identification, as they are visible in small (about 30 mm long) and very pale fish. ''G. huttoni'' reaches a length of 120 mm. Males are larger than females. Dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torrentfish
The torrentfish (''Cheimarrichthys fosteri''), or panoko (Māori), is an amphidromous freshwater fish that is endemic to New Zealand. Torrentfish are well adapted to life in shallow, fast-flowing riffles and rapids. They grow to a maximum of in total length, but more commonly reach . Description Torrentfish are stocky, with a flattened underside, arched back and a broad, downward-tapering head with eyes set high. The lower jaw is very undercut and is surrounded by a fleshy upper lip – an adaptation for picking invertebrates off the surface of stones. The fins are very robust. The pectoral fins are very large and triangular, angled so that water flowing over them presses the fish against the riverbed, helping them to stay in position in fast-flowing water. The pelvic fins are set underneath the head. The dorsal and anal fins have very long bases, the dorsal fin extending for nearly half of the body length. The tail fin is short and truncated or slightly forked, suited to sudden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Smelt
The New Zealand smelt (''Retropinna retropinna''), also known as the New Zealand common smelt, New Zealand cucumber fish, or silveries is a smelt of the family Retropinnidae, found only in New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ... at shallow depths in estuaries and rivers. Their length is between 8 and 13 cm. Species description ''Retropinna retropinna'' are elongated silver green fish with clear fins, just larger than palm size. Smelt can be identified by the adipose fin, a small fleshy nub, located halfway between the dorsal fin and the tail. Scales, a forked tail and a distinct “cucumber smell” are other ways of distinguishing Smelt from other species. There are two species of smelt in New Zealand, the common smelt and Stokell's smelt which can only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waihou River (Northland)
The Waihou River is located in the northern North Island of New Zealand. Its former name, Thames River, was bestowed by Captain James Cook in November 1769, when he explored of the river from the mouth. An older Māori name was "Wai Kahou Rounga". A 1947 New Zealand Geographic Board, Geographic Board enquiry ruled that the official name would be Waihou. Geography The river flows north for from the Mamaku Ranges past the towns of Putāruru, Te Aroha, Paeroa and Turua, before reaching the Firth of Thames at the south end of the Hauraki Gulf near the town of Thames, New Zealand, Thames. In its lower reaches, the river and the nearby Piako River form the wide alluvial Hauraki Plains. Just before the river reaches the ocean, New Zealand State Highway 25, State Highway 25 crosses the river over the Kopu Bridge, which was the longest single lane bridge in the country at and the only remaining swing bridge on a New Zealand state highway. The bridge was infamous for the queues of veh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short-finned Eel
The short-finned eel (''Anguilla australis''), also known as the shortfin eel, is one of the 15 species of eel in the family Anguillidae. It is native to the lakes, dams and coastal rivers of south-eastern Australia, New Zealand, and much of the South Pacific, including New Caledonia, Norfolk Island, Lord Howe Island, Tahiti, and Fiji. Description The body of the adult short-finned eel is long and snakelike, roughly tubular and the head is small, with the jaws reaching back to below the eye or further. The dorsal (top) and anal (bottom) fins are of roughly equal length. The colour varies considerably from one individual to another; a deep olive-green is typical but it can be much lighter; golden or even (rarely) yellowish. There are no markings of note, but the underside is pale, often silvery, and the fins greenish. When full grown, they reach about 90 cm. The short-finned eel has a typical regeneration time of 15 to 30 years for females and it reaches a maximum size of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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