The Holocene history of mediterraneantype plant communities, Little Desert National Park, Victoria, Australia

The Holocene ◽  
2001 ◽  
Vol 11 (6) ◽  
pp. 691-697 ◽  
Author(s):  
I. Thomas ◽  
N. J. Enright ◽  
C. E. Kenyon
Author(s):  
П.С. Белянин ◽  
Н.И. Белянина

На основе палинологических данных, восстановлена история развития природной среды аккумулятивной равнины в кутовой части Уссурийского залива за последние 5350 кал. л. Определены особенности структуры растительного покрова в завершающую фазу оптимума голоцена, а также при разнонаправленных климатических флуктуациях позднего голоцена. В завершающую фазу оптимума голоцена широколиственные растения в горном обрамлении были распространены более широко, чем в настоящее время. На аккумулятивной равнине преобладали мелколиственные растительные сообщества с доминированием березы обыкновенной, гибридных берез и ольхи. Похолодание, начавшееся в конце среднего и продолжившееся в начале позднего голоцена, привело к сокращению в растительности широколиственных растений и более широкому распространению мелколиственных. В конце позднего голоцена в кутовой части Уссурийского залива сложились природные условия, обусловившие формирование современной структуры растительности. Based on the palynological data, the history of vegetation on the accumulative plain in the inner part of the Ussuri Bay was reconstructed. Features of the structure of the vegetation cover during the final phase of the Holocene optimum and at multidirectional climatic fluctuations in the Late Holocene were identified. Broad-leaf plants in the final phase of the Holocene were more widely-spread on the surrounding mountain than at present. On the accumulative plains grassy meadows with small-leaf plant communities dominated. Deterioration of natural conditions during the transition to the Late Holocene caused a decrease in vegetation of broad- leaved plants and in an increase in the role of small-plants. At the end of the Late Holocene natural conditions developed in the inner part of the Ussuri Bay, that conditioned the formation of the modern structure of vegetation.


Author(s):  
Terence Young ◽  
Alan MacEachern ◽  
Lary Dilsaver

This essay explores the evolving international relationship of the two national park agencies that in 1968 began to offer joint training classes for protected-area managers from around the world. Within the British settler societies that dominated nineteenth century park-making, the United States’ National Park Service (NPS) and Canada’s National Parks Branch were the most closely linked and most frequently cooperative. Contrary to campfire myths and nationalist narratives, however, the relationship was not a one-way flow of information and motivation from the US to Canada. Indeed, the latter boasted a park bureaucracy before the NPS was established. The relationship of the two nations’ park leaders in the half century leading up to 1968 demonstrates the complexity of defining the influences on park management and its diffusion from one country to another.


Author(s):  
Alan D. Roe

Into Russian Nature examines the history of the Russian national park movement. Russian biologists and geographers had been intrigued with the idea of establishing national parks before the Great October Revolution but pushed the Soviet government successfully to establish nature reserves (zapovedniki) during the USSR’s first decades. However, as the state pushed scientists to make zapovedniki more “useful” during the 1930s, some of the system’s staunchest defenders started supporting tourism in them. In the decades after World War II, the USSR experienced a tourism boom and faced a chronic shortage of tourism facilities. Also during these years, Soviet scientists took active part in Western-dominated international environmental protection organizations, where they became more familiar with national parks. In turn, they enthusiastically promoted parks for the USSR as a means to reconcile environmental protection and economic development goals, bring international respect to Soviet nature protection efforts, and help instill a love for the country’s nature and a desire to protect it in Russian/Soviet citizens. By the late 1980s, their supporters pushed transformative, and in some cases quixotic, park proposals. At the same time, national park opponents presented them as an unaffordable luxury during a time of economic struggle, especially after the USSR’s collapse. Despite unprecedented collaboration with international organizations, Russian national parks received little governmental support as they became mired in land-use conflicts with local populations. While the history of Russia’s national parks illustrates a bold attempt at reform, the state’s failure’s to support them has left Russian park supporters deeply disillusioned.


2000 ◽  
Vol 62 (2) ◽  
pp. 90-104 ◽  
Author(s):  
J. M. Espíndola ◽  
J. L. Macías ◽  
R. I. Tilling ◽  
M. F. Sheridan

The Holocene ◽  
2016 ◽  
Vol 27 (5) ◽  
pp. 651-664 ◽  
Author(s):  
Krystyna Milecka ◽  
Grzegorz Kowalewski ◽  
Barbara Fiałkiewicz-Kozieł ◽  
Mariusz Gałka ◽  
Mariusz Lamentowicz ◽  
...  

Wetlands are very vulnerable ecosystems and sensitive to changes in the ground water table. For the last few thousand years, hydrological balance has also been influenced by human activity. To improve their cropping features, drainage activity and fertilizing were applied. The drainage process led to an abrupt change of environment, the replacement of plant communities and the entire ecosystem. The problem of carbon sequestration is very important nowadays. A higher accumulation rate is related to higher carbon accumulation, but the intensity of carbon sequestration depends on the type of mire, habitat, and climatic zone. The main aim of this article was an examination of the changes in poor-fen ecosystem during the last 200 years in relation to natural and anthropogenic factors, using paleoecological methods (pollen and macrofossils). The second aim was a detailed investigation of the sedimentary record to aid our understanding of carbon sequestration in the poor fen of temperate zone. This case study shows that fens in temperate zones, in comparison with boreal ones, show higher carbon accumulation rates which have been especially intensive over the last few decades. To reconstruct vegetation changes, detailed palynological and macrofossil analyses were done. A 200-year history of the mire revealed that it was influenced by human activity to much degree. However, despite the nearby settlement and building of the drainage ditch, the precious species and plant communities still occur.


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