標(biāo)題: Titlebook: Vegetation and Production Ecology of an Alaskan Arctic Tundra; Larry L. Tieszen Book 1978 Springer-Verlag New York Inc. 1978 Assimilat.Flo [打印本頁] 作者: 瘦削 時間: 2025-3-21 18:31
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作者: 無法破譯 時間: 2025-3-21 22:19
Vegetation and Production Ecology of an Alaskan Arctic Tundra作者: 不能平靜 時間: 2025-3-22 00:32
Seasonal Dynamics of Above- and Belowground Production of Vascular Plants at Barrow, Alaskarova (1958) clearly has documented maximum belowground standing crops of over 800 g m. in U.S.S.R. arctic tundra sites. Dennis and Johnson (1970) reported belowground standing crops at Barrow of up to 1435 g m., and Khodachek (1969) measured belowground standing crops as high as 4700 g m. in the wes作者: thalamus 時間: 2025-3-22 07:38
Floristics, Phytogeography, and Ecology of Arctic Alaskan Bryophytes reach 600. This prediction is an educated guess in that (1) several as yet undescribed species are in hand, (2) some species of uncertain identity, and still not identified, are omitted from the count, (3) new and capable bryologists are entering the field, (4) the enormous, difficult, and untidy g作者: 懶惰民族 時間: 2025-3-22 12:11 作者: 諄諄教誨 時間: 2025-3-22 14:55 作者: Buttress 時間: 2025-3-22 17:48 作者: 犬儒主義者 時間: 2025-3-22 21:24 作者: 咒語 時間: 2025-3-23 02:54 作者: 墻壁 時間: 2025-3-23 05:50 作者: GIDDY 時間: 2025-3-23 13:30 作者: monogamy 時間: 2025-3-23 16:11 作者: 抱狗不敢前 時間: 2025-3-23 18:54 作者: 使聲音降低 時間: 2025-3-23 22:18 作者: Hallowed 時間: 2025-3-24 04:55
W. C. Oechel,B. Sveinbj?rnssonecorders erhalten hat, sucht in der Vorkaufphase Informationen, um das für ihn geeignete Ger?t zu finden. Aufgrund der Sprungwerbung des Herstellers X und der Pr?sentations in einem Phono- Fachgesch?ft f?llt der Entschlu? zum Kauf des Ger?tes XY. Die guten Erfahrungen, die der K?ufer in der Nachkauf作者: misanthrope 時間: 2025-3-24 10:34 作者: 使增至最大 時間: 2025-3-24 12:36 作者: MAG 時間: 2025-3-24 16:30 作者: 射手座 時間: 2025-3-24 19:33
Larry L. TieszenSchwerf?lligkeit, unverst?ndlicher Vielschreiberei und unproduktiven Papierverbrauchs einbringt. Ob mit Recht oder nicht, einmal wurden diese Arbeiten unter dem Druck des Augenblicks für n?tig befunden und laufen dann nach gleichem Schema in den eingefahrenen Gleisen innerbetrieblicher Gewohnheit un作者: 注入 時間: 2025-3-25 01:59 作者: PUT 時間: 2025-3-25 03:24 作者: 清醒 時間: 2025-3-25 09:08
J. G. Dennis,L. L. Tieszen,M. A. Vettere Zeitdruck und Rollenkonflikte) keinen, einen geringen oder sogar einen hemmenden Einfluss auf die Tendenz zum Alkoholkonsum. Demgegenüber erwiesen sich die Kontrollamitionen bzw. die Distanzierungsunf?higkeit als relativ starker Pr?diktor. Hierbei ist allerdings einschr?nkend zu berücksichtigen, d作者: Stress 時間: 2025-3-25 12:20 作者: 蚊帳 時間: 2025-3-25 19:05
W. C. Oechel,B. Sveinbj?rnssonussen versuchen. Für den Einsatz der jeweils geeignetsten Marketing-Instrumente sind neben den verfolgten Zielen Kenntnisse über die Wirkungen der Marketing-Instrumente auf (potentielle) K?ufer bzw. Marktpartner au?erordentlich wichtig. Ans?tze zur Beschreibung und Erkl?rung des Verhaltens von K?ufe作者: 熱烈的歡迎 時間: 2025-3-25 21:00
John J. Koranda,Bruce Clegg,Marshall Stuartissenschaftlern an Universit?ten und Fachhochschulen geeignet. Es bietet in einem integrierten Kurs eine Einarbeitung in das juristische Denken und Arbeiten auf dem Gebiet des Zivilrechts. W?hrend herk?mmliche Anf?ngerliteratur entweder auf die Stoffdarstellung in lehrbuchartiger Form oder aber auf 作者: macular-edema 時間: 2025-3-26 00:51 作者: 大氣層 時間: 2025-3-26 05:09
0070-8356 Barrow, Alaska. The volume summarizes the most significant results and interpretations of the pri- mary producer projects conducted in the U.S. IBP Tundra Biome Program (1970-1974). Original data reports are available from the authors and can serve as detailed references for interested tundra resear作者: 郊外 時間: 2025-3-26 09:00
Vegetation, Floristics, and Phytogeography of Northern Alaskay, and since floras differ from place to place, tundra, as it might apply to vegetation, is an ambiguous term (Griggs, 1934). Depending upon one’s frame of reference, it is possible to develop three basic stereotypes: a steppe-desert, a heathland, and a bog and meadow landscape. All are correct; treelessness is the shared feature.作者: BOOR 時間: 2025-3-26 14:48 作者: Wordlist 時間: 2025-3-26 19:16
Photosynthesis in the Principal Barrow, Alaska, Species: A Summary of Field and Laboratory Responses temperatures, a suggestion which differs from the review and theoretical consideration provided by Warren Wilson (1966). One of the main limitations to primary production in this system may be simply the short duration of the growing season.作者: Adenocarcinoma 時間: 2025-3-26 21:45
Some Aspects of Water Relations of Arctic and Alpine RegionsJarvis (1963) stressed the importance of knowing the interrelationships between leaf resistance, water potential, and water content, before the water relations of a species could be understood. Hence, to study the effects of plant water relations on plant distribution and production the total soil-plant-atmosphere system should be characterized.作者: 騙子 時間: 2025-3-27 02:50 作者: 強(qiáng)行引入 時間: 2025-3-27 07:48 作者: 描述 時間: 2025-3-27 11:02
The Role of Algae in Tundra Soils965). Although taxonomic synonymity must be considered (Prescott, 1964), between 3000 and 4000 species have been identified for the North American Arctic and Subarctic (Prescott, 1959, 1963a). They are a substantial component of the soil vegetal mass (Tikhomirov, 1971), and their importance at Barrow is recognized.作者: 深淵 時間: 2025-3-27 13:39 作者: 合乎習(xí)俗 時間: 2025-3-27 18:45 作者: 橫條 時間: 2025-3-27 22:17
Spatial and Temporal Variation of the Vegetation and Its Production, Barrow, Alaska and plant succession of the International Biological Programme (IBP) Tundra Biome site at Barrow, Alaska. It provides a framework against which the detailed physiological and modeling experiments of other production studies in this volume can be viewed. The pragmatic decisions of the program focuse作者: 胰臟 時間: 2025-3-28 02:59 作者: myriad 時間: 2025-3-28 10:06
Floristics, Phytogeography, and Ecology of Arctic Alaskan Bryophytessts compiled from the literature or based, at least in part, on actual field exploration and original investigation (Murray, 1974; Murray and Murray, 1974, 1978; Rastorfer, 1972; Rastorfer et al., 1973; Smith, 1974; Worley, 1970; Worley and Iwatsuki, 1970, 1971; Steere, 1978). The bryophyte flora of作者: osteopath 時間: 2025-3-28 11:56 作者: 影響帶來 時間: 2025-3-28 17:50 作者: Nebulous 時間: 2025-3-28 19:00
The Role of Algae in Tundra Soils, 1965; Foged, 1971; Hilliard and Tash, 1966; Kalff, 1967, 1970; Kling, 1972; Maruyama, 1967; Prescott, 1953, 1954, 1963a,b,c; Prescott and Vinyard, 1965). Although taxonomic synonymity must be considered (Prescott, 1964), between 3000 and 4000 species have been identified for the North American Arc作者: Immobilize 時間: 2025-3-29 00:33
Ecto- and Endomycorrhizae of Arctic Plants at Barrow, Alaskaozlowski, 1973). The early research dealt with ectomycorrhizal fungi and a series of experiments clearly indicated that greater uptake of nitrogen and phosphorus from infertile soils occurred when mycorrhizae were present. Nutritional studies of selected mycorrhizal fungi by Palmer and Hacskaylo (19作者: GORGE 時間: 2025-3-29 06:36
Photosynthesis in the Principal Barrow, Alaska, Species: A Summary of Field and Laboratory Responseset meadow system is capable of accumulating 100 g of dry matter aboveground in a 55-day period (Tieszen, 1972). This production results in a minimal efficiency of primary production of 0.46%. This comparatively high efficiency suggests that the process of photosynthesis is adapted to the low ambient作者: 上下倒置 時間: 2025-3-29 08:53
Primary Production Processes in Arctic Bryophytes at Barrow, Alaska; Webber, 1974, 1978; Rastorfer, 1978). For example, bryophytes comprise 91% of the aboveground biomass in a sedge-moss meadow in Western Taimyr, and an average of 38% of the aboveground biomass for all IBP tundra sites reported by Wielgolaski (1972). In drier tundra areas, however, moss cover drops作者: 悠然 時間: 2025-3-29 12:31 作者: defray 時間: 2025-3-29 17:33 作者: 皮薩 時間: 2025-3-29 21:38
Some Aspects of Water Relations of Arctic and Alpine Regionsa and to assess the possible role of water limitation on primary production in these two ecosystems. At low leaf water potentials, water limitation of production may occur by stomatal closure restricting water loss and photosynthesis or by reduced growth because of decreased cell turgor. Jarvis and 作者: hypertension 時間: 2025-3-30 03:22
Radio-Tracer Measurement of Transpiration in Tundra Vegetation, Barrow, Alaskaation and equipment. Micro-meteorological data may be used to estimate the potential evapotranspirational flux (Pruitt, 1971) and large weighing lysimeters (Pruit and Angus, 1960) have been employed in agricultural and university research facilities (Armijo et al., 1972) to make this measurement gra作者: fulcrum 時間: 2025-3-30 05:11
Simulation of the Effect of the Tundra Vascular Plant Canopy on the Productivity of Four Plant Specis. Low temperatures, low solar and infrared irradiances, high wind speeds, permanently frozen subsoil, and impeded water drainage restrict the development of the vegetation by affecting plant growth and development, vegetation composition, and soil faunal activity and decomposition (Bliss, 1956; Bil作者: idiopathic 時間: 2025-3-30 10:49 作者: ticlopidine 時間: 2025-3-30 14:25
Introductionted to the immediate environmental concerns of Northern Alaska. Rather than undertake applied projects, we conducted basic ecological experiments whose results could be useful in solving environmental problems.作者: BROW 時間: 2025-3-30 17:04
Primary Production Processes in Arctic Bryophytes at Barrow, Alaskar . for numerous IBP tundra sites. This compares to values of 9 to 382 g dry wt m. yr. for vascular plants. In select antarctic areas, however, production of bryophytes may reach 1000 g dry wt m. yr. (Clarke et al., 1971).作者: CLIFF 時間: 2025-3-30 22:19
Meteorological Assessment of CO2 Exchange over an Alaskan Arctic Tundratantly, it responds to CO. exchange at the community level of integration so that extrapolation from individual plant data is not required to obtain estimates for the entire plant community. In effect, this approach integrates primary producer and decomposer components of an ecosystem.作者: 我要威脅 時間: 2025-3-31 01:12
978-1-4612-6309-8Springer-Verlag New York Inc. 1978作者: arbovirus 時間: 2025-3-31 07:04
