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Full-Text Articles in Physical Sciences and Mathematics
Heavy Grazing Significantly Reduced The Temporal Stability Of Aboveground Biomass, X. Ju, T. T. Shen, Q. Wu, G. D. Han
Heavy Grazing Significantly Reduced The Temporal Stability Of Aboveground Biomass, X. Ju, T. T. Shen, Q. Wu, G. D. Han
IGC Proceedings (1997-2023)
The stability of a plant community is the embodiment of the dynamic balance achieved by the interaction between populations in the form of competition or mutual benefit. Temporal stability refers to the ratio of the average value to the variance of the biomass of the population or community. For grassland ecosystems, the stability of the grassland plant community is the basis for its survival and functional performance, and is the key factor affecting its structure and function. In order to study the impact of grazing on the temporal stability of aboveground biomass of desert steppe, this study used a completely …
Effects Of Different Grazing Intensities On Grasshopper Communities In Stipa Breviflora Desert Steppe, Guodong Han, Tingting Shen
Effects Of Different Grazing Intensities On Grasshopper Communities In Stipa Breviflora Desert Steppe, Guodong Han, Tingting Shen
IGC Proceedings (1997-2023)
As a common method of grassland management, grazing plays an important role in grassland conservation. Grasshoppers and large herbivores are integral parts of grassland biodiversity and food webs. However, to some extent there is still room for further research on how grasshoppers cope with grazing by large herbivores. A field grazing experiment in Stipa breviflora desert steppe in Inner Mongolia, China to investigate the effects of sheep grazing intensity on the abundance and richness of locust population and community. The grazing experiment started in 2004, and the grasshopper population and community were investigated in 2021. The results showed that: Grazing …
Plant Species Richness At Three Levels Of Range Potential In Semi-Steppe Vegetation Of Iran, Mansour Mesdaghi
Plant Species Richness At Three Levels Of Range Potential In Semi-Steppe Vegetation Of Iran, Mansour Mesdaghi
IGC Proceedings (1997-2023)
Semi-steppe vegetation with a mean annual precipitation of 250 mm covers 18.5% of Iran (Pabot, 1967). Under full protection, bunch grasses are dominant in this grassland ecosystem. Golestan National Park, (100,000 ha), is representative of this semi-steppe vegetation zone. It has been protected for 40 years and can be considered as a reference area (RA) of semi-steppe vegetation. Under moderate grazing the The Gorokhoud Protected Area acts as a buffer zone to the National Park, with grazing based on permits issued by the Range and Forest Organisation. Parts of the protected area can be considered as a key area (KA), …
N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann
N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann
IGC Proceedings (1997-2023)
Leaching of N and P from extensively managed grasslands on organic soils varies considerably. In environmentally sensitive areas it is important to diminish leaching by appropriate agricultural management. In Denmark low grazing intensity and management without fertilisation have been given a high priority. The type of soil has not been equally in focus, and it seems that the effect of cutting, compared to grazing, resulting in a higher removal of nutrients (e.g. Benke et al., 1992) can be used more strategically. The objective of this case study was to combine data from management strategies with data from leaching examinations …
Leaf Appearance And Elongation In Panicum Maximum Cv. Tanzania Tillers Of Varying Ages, Domicio Nascimento Jr., Rogério T. Barbosa, Valéria P. B. Euclides, S. C. Da Silva, R. A. Torres
Leaf Appearance And Elongation In Panicum Maximum Cv. Tanzania Tillers Of Varying Ages, Domicio Nascimento Jr., Rogério T. Barbosa, Valéria P. B. Euclides, S. C. Da Silva, R. A. Torres
IGC Proceedings (1997-2023)
A sward may be considered as a tiller population of varying ages and sizes, and these different age groups are likely to present distinct behaviour in terms of growth and herbage production. However, there is very little information on how tiller age, in association with grazing management practices (e.g. frequency and intensity of grazing), alter morphogenetic characteristics and, therefore, herbage production. Against this background, the present experiment had the objective to evaluate leaf appearance and elongation in Panicum maximum cv. Tanzania tillers of different age groups when submitted to intermittent grazing regimes.
The Impact Of Vegetation Structure And Spatial Heterogeneity On Invertebrate Biodiversity Within Upland Landscapes, L. Cole, M. L. Pollock, D. Robertson, J. P. Holland, D. I. Mccraken
The Impact Of Vegetation Structure And Spatial Heterogeneity On Invertebrate Biodiversity Within Upland Landscapes, L. Cole, M. L. Pollock, D. Robertson, J. P. Holland, D. I. Mccraken
IGC Proceedings (1997-2023)
Livestock grazing influences vegetation structure and composition at both the patch and wider landscape scale (Milne et al., 1998), and this may have effects on upland invertebrate communities, which in turn influence bird abundance and distribution (Fuller & Gough, 1999; Cole et al., 2002). Of particular importance are open grasslands and wet flushes where invertebrates are abundant and more accessible to birds. However, there have been few studies of invertebrates associated with upland habitats, and most of these have focused on heather moorland, blanket bog, or very fine-scaled structure within grasslands (Dennis et al. 1997; 1998; 2001). This …
Yield Components In A Signal Grass-Clitoria Mixture Grazed At Different Herbage Allowance, R. Jiménez-Guillen, S. Rojas-Hernández, J. Olivares-Pérez, A. Martínez-Hernández, J. Pérez-Pérez
Yield Components In A Signal Grass-Clitoria Mixture Grazed At Different Herbage Allowance, R. Jiménez-Guillen, S. Rojas-Hernández, J. Olivares-Pérez, A. Martínez-Hernández, J. Pérez-Pérez
IGC Proceedings (1997-2023)
A Signal grass-Clitoria mixture provides good quality forage in the dry tropic of southern Mexico. However, its response in leaf and stem yields to grazing at different daily herbage allowances is not well documented. The objective of this study was to determine available and residual leaf and stem yields in a Signal grass (Brachiaria decumbens)-Clitoria (Clitoria ternatea) mixture grazed at different daily herbage allowance.
N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. L. Nielsen, C. C. Hoffmann
N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. L. Nielsen, C. C. Hoffmann
IGC Proceedings (1997-2023)
Leaching of N and P from extensively managed grasslands on organic soils varies considerably. In environmentally sensitive areas it is important to diminish leaching by appropriate agricultural management. In Denmark low grazing intensity and management without fertilisation have been given a high priority. The type of soil has not been equally in focus, and it seems that the effect of cutting, compared with grazing, results in a higher removal of nutrients (e.g. Benke et al., 1992) can be used more strategically. The objective of this case study was to combine data from management strategies with data from leaching studies …
Effect Of A Grazing Intensity Gradient On Primary Production And Soil Nitrogen Mineralisation In A Humid Grassland Of Western France, N. Rossignol, A. Bonis, J-B. Bouzillé
Effect Of A Grazing Intensity Gradient On Primary Production And Soil Nitrogen Mineralisation In A Humid Grassland Of Western France, N. Rossignol, A. Bonis, J-B. Bouzillé
IGC Proceedings (1997-2023)
Large herbivores have a major influence on the structure and the functions of humid grasslands and especially on primary production. Earlier work on the study site showed that grazing intensity was spatially varied and created a diversity of vegetation patches in the grassland (Loucougaray, 2003). The first objective of this study was to determine whether the variation in grazing intensity led to variation of primary production within the three plant communities located at three topographic levels in the grassland. The second objective was to determine whether a relationship linked primary production variation and net soil nitrogen (N) mineralisation.
Performance Of Nellore Cattle Under Two Grazing Management Systems, L. De A. Corrêa, Maurício M. De Alencar, Rogério T. Barbosa, P. F. Barbosa, Geraldo M. Da Cruz, I. U. Packer, C. A. Cordeiro
Performance Of Nellore Cattle Under Two Grazing Management Systems, L. De A. Corrêa, Maurício M. De Alencar, Rogério T. Barbosa, P. F. Barbosa, Geraldo M. Da Cruz, I. U. Packer, C. A. Cordeiro
IGC Proceedings (1997-2023)
The objective of this study was to evaluate the effects of grazing intensification on birth weight (BW), weaning weight (WW, standartized to 205 days), average daily gain from birth to weaning (ADG), and gestation length (GL) of calves, cow weight at calving (CWC) and at weaning (CWW), cow condition score at calving (CCC) and at weaning (CCW), and BW/CWC (BWR), WW/CWC (WWRC) and WW/CWW (WWRW) ratios. One hundred and sixty eight Nellore calves born in 1998 and 1999, out of dams maintained in two grazing management systems were evaluated: an extensive 1.0 animal unity (AU). ha-1 system on unfertilized …
Structural Stability Of Short Latency Alfalfa-Based Pastures In The Humid Pampa, Argentina, R. O. Refi, B. Martín
Structural Stability Of Short Latency Alfalfa-Based Pastures In The Humid Pampa, Argentina, R. O. Refi, B. Martín
IGC Proceedings (1997-2023)
The aim of this study was to search the effects of grazing intensity and nitrogen fertilization on the structural stability of a mixed pasture composed by alfalfa (latency group 9), brome grass, tall fescue and white clover, sown in April 1997. Rotational grazing was carried out with dairy cattle with high intensity (HI: up to 3-4 cm) or moderate intensity (LI: up to 8-10 cm), whenever the alfalfa showed basal regrowth. According to a split-plot design, grazing intensities were subdivided to assign three levels of nitrogen fertilization: N0, without fertilization; N1 with 50 kg N/ha per year; and N2 with …
Yields And Sward Characteristics Of Timothy Cultivars Under Grazing, H. T. Kunelius, G. H. Dürr, K. B. Mcrae, S. A. E. Fillmore
Yields And Sward Characteristics Of Timothy Cultivars Under Grazing, H. T. Kunelius, G. H. Dürr, K. B. Mcrae, S. A. E. Fillmore
IGC Proceedings (1997-2023)
Seven timothy (Phleum pratense L.) cultivars were evaluated over three pasture seasons under rotational grazing to 7 or 11 cm post-grazing heights and regrowth periods of four to seven weeks. There was a trend for the pasture type timothy cultivars to outyield Champ timothy (check). Dry matter yields were lower for the 7 cm than 11 cm post-grazing height. Although the overall cultivar x post-grazing height interaction was not significant (P > 0.05), there was variability in grazing tolerance among timothy cultivars. Yield of Kahu was maintained and vegetative tiller density of Kahu increased over the experimental period under 7 …
Effects Of Grazing On Wind Driven Matter Fluxes In The Xilingele Grassland, Inner Mongolia, C. Hoffmann, R. Funk
Effects Of Grazing On Wind Driven Matter Fluxes In The Xilingele Grassland, Inner Mongolia, C. Hoffmann, R. Funk
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Cattle Grazing On Native Forage Biomass Yield In Extensive Grazing Systems Of Southern Bolivia, H. Alzérreca, M. Miranda, Svenja Marquardt, Michael Kreuzer, Andrea C. Mayer
Effect Of Cattle Grazing On Native Forage Biomass Yield In Extensive Grazing Systems Of Southern Bolivia, H. Alzérreca, M. Miranda, Svenja Marquardt, Michael Kreuzer, Andrea C. Mayer
IGC Proceedings (1997-2023)
No abstract provided.
Suitable Grazing Methods For The Stipa Bungeana Grassland In Southern Ningxia Foothills, Jinhua Wang, Binyu Zhang, Chengjiang Dai, Shouding Shi
Suitable Grazing Methods For The Stipa Bungeana Grassland In Southern Ningxia Foothills, Jinhua Wang, Binyu Zhang, Chengjiang Dai, Shouding Shi
IGC Proceedings (1997-2023)
No abstract provided.
Evaluation Of Lamb Performance And Forage Quality In Rotational Grazing Systems, Yuping Rong, L. X. Zhao
Evaluation Of Lamb Performance And Forage Quality In Rotational Grazing Systems, Yuping Rong, L. X. Zhao
IGC Proceedings (1997-2023)
No abstract provided.
Effects Of Grazing Intensity On Vegetation Cover And Soil Properties In Central Alborz, Hamid Jalilvand, Reza Tamartash, Mohammadreza Tatian, Golriz Hosainzadeh
Effects Of Grazing Intensity On Vegetation Cover And Soil Properties In Central Alborz, Hamid Jalilvand, Reza Tamartash, Mohammadreza Tatian, Golriz Hosainzadeh
IGC Proceedings (1997-2023)
No abstract provided.
Live Weight Gain Of Beef Cattle Steers On Panicum Maximum Cv. Tanzania Subjected To Intensities Of Rotational Grazing, Domicio Nascimento Jr., G. S. Difante, Valéria P. B. Euclides, Sila C. Da Silva, R. A. Torres
Live Weight Gain Of Beef Cattle Steers On Panicum Maximum Cv. Tanzania Subjected To Intensities Of Rotational Grazing, Domicio Nascimento Jr., G. S. Difante, Valéria P. B. Euclides, Sila C. Da Silva, R. A. Torres
IGC Proceedings (1997-2023)
No abstract provided.
Modeling The Impact Of Grazing On Water Budgets, Ying Zhao, Stephan Peth, Julia Krümmelbein, Bettina Ketzer, Yingzhi Gao, Christian Bernhofer, Rainer Horn
Modeling The Impact Of Grazing On Water Budgets, Ying Zhao, Stephan Peth, Julia Krümmelbein, Bettina Ketzer, Yingzhi Gao, Christian Bernhofer, Rainer Horn
IGC Proceedings (1997-2023)
No abstract provided.
Effects Of Cattle Grazing On Survival And Regrowth Of Miscanthus Sinensis Tillers, T. Takahashi, T. Shishido, Shin-Ichiro Ogura, S. Sato
Effects Of Cattle Grazing On Survival And Regrowth Of Miscanthus Sinensis Tillers, T. Takahashi, T. Shishido, Shin-Ichiro Ogura, S. Sato
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Grazing Gradients On Soil Microbe Variation In Inner Mongolia Steppe, Xiaoyu Wang, Mengli Zhao, Guodong Han
Effect Of Grazing Gradients On Soil Microbe Variation In Inner Mongolia Steppe, Xiaoyu Wang, Mengli Zhao, Guodong Han
IGC Proceedings (1997-2023)
No abstract provided.
Changes In Sward Composition Under Different Grazing Management, V. Pavlů, Michal Hejcman, L. Pavlů, Jan Gaisler
Changes In Sward Composition Under Different Grazing Management, V. Pavlů, Michal Hejcman, L. Pavlů, Jan Gaisler
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Grazing Intensity On Photosynthesis And Soil Respiration Of Alpine Grassland In Tibet, Y. F. Wan, Q. Z. Gao, Y. Li, X. B. Qin, W. Z. Jiancun, B. S. Wang
Effect Of Grazing Intensity On Photosynthesis And Soil Respiration Of Alpine Grassland In Tibet, Y. F. Wan, Q. Z. Gao, Y. Li, X. B. Qin, W. Z. Jiancun, B. S. Wang
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Grazing Intensity And Time On Diet Composition And Intake Of Herbage In Grazing Sheep, Honglian Hu, Dexun Lu, Yongzhi Liu, Yakui Li
Effect Of Grazing Intensity And Time On Diet Composition And Intake Of Herbage In Grazing Sheep, Honglian Hu, Dexun Lu, Yongzhi Liu, Yakui Li
IGC Proceedings (1997-2023)
No abstract provided.
Evaluation Of Grazing Intensity Effects On Mineral Nutrients Grassland Soils (A Case Study Grassland Golestan Province Of Iran), S. Ghanbari Shourkaie
Evaluation Of Grazing Intensity Effects On Mineral Nutrients Grassland Soils (A Case Study Grassland Golestan Province Of Iran), S. Ghanbari Shourkaie
IGC Proceedings (1997-2023)
No abstract provided.
Comparison Of Forage Quality Of Astragalus Effusus Bunge At Three Growth Stage, Management Systems, Gelavij Zamani Dadaneh, Ataollah Ebrahimi
Comparison Of Forage Quality Of Astragalus Effusus Bunge At Three Growth Stage, Management Systems, Gelavij Zamani Dadaneh, Ataollah Ebrahimi
IGC Proceedings (1997-2023)
No abstract provided.
Impact Of Grazing Intensity On Feed Intake, Herbage Mass, And Animal Productivity In The Steppe Of Inner Mongolia, China, K. Müller, L. Lin, T. Glindemann, C. Wang, Anne Schiborra, P. Schönbach, H. W. Wan, B. M. Tas, M. Gierus, Friedhelm Taube, A. Susenbeth
Impact Of Grazing Intensity On Feed Intake, Herbage Mass, And Animal Productivity In The Steppe Of Inner Mongolia, China, K. Müller, L. Lin, T. Glindemann, C. Wang, Anne Schiborra, P. Schönbach, H. W. Wan, B. M. Tas, M. Gierus, Friedhelm Taube, A. Susenbeth
IGC Proceedings (1997-2023)
No abstract provided.
Evaluation Of Impacts Of Livestock Grazing Intensity On Plant Biodiversity In The Western Chang Tang National Natural Reserve, Tibet, China, Tsechoe Dorji, L. J. Fox, C. E. Richard
Evaluation Of Impacts Of Livestock Grazing Intensity On Plant Biodiversity In The Western Chang Tang National Natural Reserve, Tibet, China, Tsechoe Dorji, L. J. Fox, C. E. Richard
IGC Proceedings (1997-2023)
No abstract provided.
Effect Of Grazing On Soil Structure And Consequences For Soil Mechanical And Hydraulic Propertiesin Inner Mongolia, A. Reszkowska, J. Krümmelbein, S. Peth, L. Gan, X. Peng, R. Horn
Effect Of Grazing On Soil Structure And Consequences For Soil Mechanical And Hydraulic Propertiesin Inner Mongolia, A. Reszkowska, J. Krümmelbein, S. Peth, L. Gan, X. Peng, R. Horn
IGC Proceedings (1997-2023)
No abstract provided.
Changes In Plant Communities By Grazing In Northern Mongolian Grassland And Assessment Of Nomads, K. Kakinuma, S. Takatsuki
Changes In Plant Communities By Grazing In Northern Mongolian Grassland And Assessment Of Nomads, K. Kakinuma, S. Takatsuki
IGC Proceedings (1997-2023)
No abstract provided.