Báo cáo lâm nghiệp: "Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks" pptx
Báo cáo lâm nghiệp: "Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks" pptx
... species across seasons.Our effort was focused on understanding the mechanisms that explain variance in lepidopteran communities in various seasonal guilds on different oaks. e main study goal ... the main life-history traits of lepidopteran larvae and other parameters that may explain species variance in seasonal guilds on different oak species via cluster analysis and ordination method.STUDY ... Lepidoptera in different seasonal guilds was ex-plained by the same factors across the host growing season. In tropical forest systems T-S et al. (2003) found that seasonality significantly in u-enced...
- 9
- 424
- 0
Báo cáo lâm nghiệp: " Zygotic embryogenesis and empty seed formation in European larch (Larix decidua Mill.)" pptx
... additional factors affectingempty seed production. In addition to the lack of pollination, other pre-zygoticevents are known to influence mating success. These includepollination with non-viable ... degeneration is permanently high fol-lowing consanguineous mating, should be eliminated. Suchconsistent selection might contribute to a significant increase in vital seed proportion and thus, ... MinistryTable II. Percentage of ovules with complete degeneration of embryos depending on mode of pollination and clone.Pollination Clone Proportion of ovules with the complete degeneration...
- 6
- 273
- 0
Báo cáo lâm nghiệp: " Environmental factors influencing streamwater composition on sandstone (Vosges Mountains)" pptx
... streams from the proportion originating fromrain [24]. This calculation illustrates a range of rain contribu-tion to stream concentrations: 7 to 70% of stream Ca concen-trations (average 31%), 3 ... ele-ments in rain is negatively correlated to annual rainfall andtheir concentration by evapotranspiration decreases when an-nual precipitation increases. These two factors explain thestrong negative ... acid-ification in the Vosges Mountains: relation to bedrock and vegeta-tion cover, in: Landmann G., Bonneau M. (Eds.), Forest decline andatmospheric deposition effects in the French mountains, Springer,Berlin,...
- 8
- 263
- 0
Báo cáo lâm nghiệp: "Ecophysiological factors contributing to the distributions of several Quercus species in the intermountain west" docx
... common garden con-ditions allows us a means of teasing out the factors that have contributed to the loss ofone parental species and therefore gain astronger insight into ... macrocarpa and Q turbinella from summer-dry habitats. Instead it appears thatreliance on summer monsoon events is one of the critical factors influencing loss of these oaks ... sites in the intermountain west.leaf conductance / monsoon / carbon isotope ratio / oak / QuercusRésumé — Facteurs écophysiologiques contribuant à la distribution...
- 12
- 377
- 0
Báo cáo lâm nghiệp: "Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti-Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts" pps
... by an individual collecting of adults. During sweeping and beating, 30 sweepings or beatings were carried out in each locality. Caught psocids were sucked into the exhauster and stored in a ... species dispersion. is unit remains without change in various parts of axes. e DCA ordination method has a quite heuristic character. Interpretation of axes and ordination positions of particular ... is presented in this study. e research was conducted in years 1997–2001.Material was obtained from the permanent sam-pling sites during the vegetation period (from the beginning of May up...
- 8
- 666
- 0
Báo cáo lâm nghiệp: "Complex study of foliage nutrient status in ash fertilized Scots pine stands in Lithuani" pptx
... 0.06N concentration in mineral topsoil (%)N concentration in the cur.yr. needles, (%) in 2002 in 2004Lineární (in 2002) Lineární (in 2004)Fig. 5. Correlations of N concentrations in the ... concentration in soil solution (mg L/1)N concentration in the cur.yr. Needles (%)20 cm depth50 cm depthLineární (20 cm depth)Lineární (50 cm depth)Fig. 6. Correlations of N concentrations ... the control and other treatments. As an increase in N concentrations in the needles was determined, but K concentrations decreased and P did not change, the N/P/K relations in the control...
- 12
- 409
- 0
Báo cáo lâm nghiệp: "Amounts of throughfall and lysimetric water in a sub-mountain beech forest in the Kremnické vrchy Mts" ppt
... evident that the functioning of the individual ecosystems must be understood in the context of their interactions. Nothing in the living environ-ment operates separately. e individual compo-nents ... show some dis-tinct differences in the precipitation activity between Table 1. Amounts of lysimetric percolation and precipitation depth (in mm)Partial plotsControl plot Clear felling(stocking ... 0.05). is in u-ence manifested in the individual soil horizons was less conspicuous. Research oriented in this way cannot however omit the physiological processes running in inter-action with...
- 5
- 400
- 0
Báo cáo lâm nghiệp: "The proposal of biotic hazard zones in selected spruce dominated regions in Slovakia" pptx
... hazard zones and spruce stand proportions within the zones in the Low Tatras regionZoneZone area (ha)Proportion in total area of the region (%)Proportion of spruce stands (ha)Proportion of ... regionFig. 3. Biotic hazard zones in the Orava region Table 3. e areas of biotic hazard zones and spruce stand proportions within the zones in the Orava regionZoneZone area (ha)Proportion ... infestation from spreading outside the zone. is could limit the ef-ficiency of control measures.e primary purpose in zone C is to minimize the initiation of infestation. Control measures reduc-ing...
- 7
- 433
- 0
Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt
... smallest among stands of the Pieniny Mountains, but in spite of the growing up stage, it was similar to increments in other Carpathian stands as well as in some sample plots in Badin, Dobročský ... with increment of managed forests of identical species composition and site conditions.Generally, in natural and primeval forests, stands being in the growing up stage reach the highest increment ... 13.8% (Table 5).DISCUSSIONe values of three processes: loss, recruitment, and increment, determined during this study, contain important information which may be in- terpreted from the ecological...
- 12
- 362
- 0
Báo cáo lâm nghiệp: "The evolution of natural floodplain forests in South Moravia between 1973 and 2005" pptx
... preserving only variability within the individual plots in time.e projection of variability in the woody synu-sia onto the herb synusia was done through relevé scores on 4 ordination axes ... pannonicae-Ulmetum carpinetosum (Simon 1957) Džatko 1972. Only in damp hollows, the plant communities incline to the sub-association Fraxineto pannonicae-Ulmetum caricetosum Soó in Aszód 1963 corr. ... recede. e ordination analysis (Fig. 3) suggests the reces-sion of water-demanding species in time, and on the other hand, also an increase in the wood flora species on sites not in uenced by...
- 15
- 320
- 0
Từ khóa: Nghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPđề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giảiBiện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANNGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDEPhối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọPhát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninhPhát hiện xâm nhập dựa trên thuật toán k meansNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Tổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2chuong 1 tong quan quan tri rui roNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtBÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀMMÔN TRUYỀN THÔNG MARKETING TÍCH HỢP