|
Agathis Australis
''Agathis australis'', commonly known by its Māori name kauri (), is a coniferous tree in the family '' Araucariaceae'', found north of 38°S in the northern regions of New Zealand's North Island. It is the largest (by volume) but not tallest species of tree in New Zealand, standing up to 50 m tall in the emergent layer above the forest's main canopy. The tree has smooth bark and small narrow leaves. Other common names to distinguish ''A. australis'' from other members of ''Agathis'' are southern kauri and New Zealand kauri. With its novel soil interaction and regeneration pattern it can compete with faster growing angiosperms. Because it is such a conspicuous species, forest containing kauri is generally known as kauri forest, although kauri need not be the most abundant tree. In the warmer northern climate, kauri forests have a higher species richness than those found further south. Kauri even act as a foundation species that modify the soil under their canopy to cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Don
David Don (21 December 1799 – 15 December 1841) was a Scottish botanist. Biography David Don was born on 21 December 1799 at Doo Hillock, Forfar, Angus, Scotland to Caroline Clementina Stuart, and her husband George Don of Forfar. His older brother was George Don, also a botanist. His father was a curator at the Royal Botanic Garden, Leith Walk, Edinburgh. Don was Professor of Botany at King's College London from 1836 to 1841, and librarian at the Linnean Society of London from 1822 to 1841. He described several of the major conifers discovered in the period, including first descriptions of coast redwood (''Taxodium sempervirens'' D. Don; now ''Sequoia sempervirens'' (D. Don) Endl.), Bristlecone Fir (''Pinus bracteata'' D. Don, now ''Abies bracteata'' (D. Don) A. Poit.), Grand Fir (''Pinus grandis'' Douglas ex D. Don; now ''Abies grandis'' (Douglas ex D. Don) Lindl.) and Coulter Pine (''Pinus coulteri'' D. Don), and was the first to treat Sugi (''Cupressus japonica'' Thu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Canopy
In biology, the canopy is the aboveground portion of a plant cropping or crop, formed by the collection of individual plant crowns. In forest ecology, canopy also refers to the upper layer or habitat zone, formed by mature tree crowns and including other biological organisms (epiphytes, lianas, arboreal animals, etc.). The communities that inhabit the canopy layer are thought to be involved in maintaining forest diversity, resilience, and functioning. Sometimes the term canopy is used to refer to the extent of the outer layer of leaves of an individual tree or group of trees. Shade trees normally have a dense canopy that blocks light from lower growing plants. Observation Early observations of canopies were made from the ground using binoculars or by examining fallen material. Researchers would sometimes erroneously rely on extrapolation by using more reachable samples taken from the understory. In some cases, they would use unconventional methods such as chairs suspe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Forest Service
The New Zealand Forest Service was originally established in 1919 as the State Forest Service. The State Forest Service changed its name to the New Zealand Forest Service in 1949, at about the same time that the Forests Act of 1949 passed through Parliament. History The New Zealand Forest Service was responsible for the management of New Zealand's state-owned forests, including forestry, conservation and recreational functions, and was abolished in 1987. Abolition The New Zealand Forest Service was abolished in 1987. *Its environmental and conservation functions were taken over by the newly established Department of Conservation. *The logging operation and associated land was passed into the Forestry Corporation of New Zealand. *The policy advice, biosecurity functions and remaining Crown forests on leased Māori land passed to the Ministry for Primary Industries. *The logging operations and some land was sold, or leased to private logging companies in what were described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waipoua Forest
Waipoua Forest is a forest, on the west coast of the Northland Region of New Zealand's North Island. It preserves some of the best examples of kauri forest remaining in New Zealand. It is notable for having two of the largest living kauri trees, '' Tāne Mahuta'' and '' Te Matua Ngahere''. The forest was declared a sanctuary in 1952. A community-based volunteer organisation, the Waipoua Forest Trust, helps maintain the forest. The sanctuary is bordered to the south by the Professor W.R McGregor Reserve, named after W. R. McGregor (1894–1977). In the 1940s, McGregor successfully campaigned to end logging of the forest and to have it declared a sanctuary, a status it achieved in 1952. Today, the forest is a significant drawcard for visitors to Northland, with approximately 200,000 people visiting Tāne Mahuta every year. This has led to concerns about the health of the forest and the spread of kauri dieback disease. There are also easy walking tracks to Te Matua Ngahere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Information New Zealand
Toitū Te Whenua Land Information New Zealand (LINZ) is the public service department of New Zealand charged with geographical information and surveying functions as well as handling land titles, and managing Crown land and property. The minister responsible is the Minister for Land Information, and was formerly the Minister of Survey and Land Information. LINZ was established in 1996 following the restructure of the Department of Survey and Land Information (DOSLI), which was itself one of the successor organisations to the Department of Lands and Survey. The New Zealand Geographic Board secretariat is part of LINZ and provides the Board with administrative and research assistance and advice. The Minister for Land Information is Damien O'Connor. Gaye Searancke was appointed Chief Executive of Land Information New Zealand in August 2019. She succeeded Andrew Crisp, who had been in the post since 2016. Nature and scope of functions LINZ's purpose is to: *Maintain and build co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury Bay
Mercury Bay is a large V-shaped bay on the eastern coast of the Coromandel Peninsula on the North Island of New Zealand. It was named by the English navigator Captain James Cook during his exploratory expeditions. It was first named ''Te-Whanganui-a-Hei'', the great bay of Hei, by the Māori. On 9 November 1769 Cook landed on the shores of the bay to observe a Transit of Mercury. In 1919 an area of land around Shakespeare Cliff was set aside, and a small memorial was constructed, based on the erroneous notion that it was the location of Cook's observations. But the actual site of Cook's landing and observation was the eastern end of Cook's Beach, near the Purangi estuary. A smaller memorial plinth was established there also. The brig ''Trial'' and the schooner ''Brothers'' were attacked by Māori on 20 August 1815 in Mercury Bay, when several sailors were killed. The bay was the resting place of HMS ''Buffalo'', a ship that transported passengers and prisoners to Australia tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waihou River
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 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, 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 vehicles travelling to and from the Coromandel Peninsula u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hauraki Gulf
The Hauraki Gulf / Tīkapa Moana is a coastal feature of the North Island of New Zealand. It has an area of 4000 km2, Zeldisl, J. R. et al. (1995) Salp grazing: effects on phytoplankton abundance, vertical distribution and taxonomic composition in a coastal habitat. Marine Ecology Progress Series, Vol. 126, p 267-283 and lies between, in anticlockwise order, the , the Hauraki Plains, the , and [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tararu
Tararu is a former gold-mining village on the west coast of the Coromandel Peninsula of New Zealand. State Highway 25 runs through it; Te Puru being about to the north, and Thames about to the south. Tararu has a boat ramp, a 91-dwelling retirement village, a store, 2 motels, a holiday park and is the northern terminus of the Thames Connector bus. The Category 1 former Thames North School opened on 25 January 1878, closed in 1971 and was taken over by Thames Coromandel Council in 1978. It is now Thames Art Gallery. In the 2013 census, Tararu's population was 525, made up of 210 in meshblock 1048800, 138 (1048900), 48 (1048700), 39 (1049000) and 90 (1049100). Tararu is connected to the Thames water supply. Tararu Stream The Tararu Stream drains a steep hilly catchment of in the Coromandel Range with regenerating native vegetation and scrub. Most of the village lies on the stream's alluvial fan on the Firth of Thames coast. Tararu suffered severe flooding during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequoiadendron Giganteum
''Sequoiadendron giganteum'' (giant sequoia; also known as giant redwood, Sierra redwood, Sierran redwood, California big tree, Wellingtonia or simply big treea nickname also used by John Muir) is the sole living species in the genus '' Sequoiadendron'', and one of three species of coniferous trees known as redwoods, classified in the family Cupressaceae in the subfamily Sequoioideae, together with ''Sequoia sempervirens'' (coast redwood) and '' Metasequoia glyptostroboides'' (dawn redwood). Giant sequoia specimens are the most massive trees on Earth. The common use of the name ''sequoia'' usually refers to ''Sequoiadendron giganteum'', which occurs naturally only in groves on the western slopes of the Sierra Nevada mountain range of California. The giant sequoia is listed as an endangered species by the IUCN, with fewer than 80,000 trees remaining. Since its last assessment as an endangered species in 2011, it was estimated that another 13–19% of the population (or 9,761–13 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollination
Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, birds, and bats; water; wind; and even plants themselves, when self-pollination occurs within a closed flower. Pollination often occurs within a species. When pollination occurs between species, it can produce hybrid offspring in nature and in plant breeding work. In angiosperms, after the pollen grain (gametophyte) has landed on the stigma, it germinates and develops a pollen tube which grows down the style until it reaches an ovary. Its two gametes travel down the tube to where the gametophyte(s) containing the female gametes are held within the carpel. After entering an ovum cell through the micropyle, one male nucleus fuses with the polar bodies to produce the endosperm tissues, while the other fuses with the ovule to produce the embryo. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development. Processes such as insemination or pollination which happen before the fusion of gametes are also sometimes informally called fertilisation. The cycle of fertilisation and development of new individuals is called sexual reproduction. During double fertilisation in angiosperms the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. History In Antiquity, Aristotle conceived the formation of new individuals through fusion of male and female fluids, with form and function emerging gradually, in a mode called by him as epigenetic. In 1784, Spallanzani established the need of interaction between the female's ovum and male's sperm to form a zygote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
