The Complete Book Here
... The plants listed in this book are drought-adapted and drought-tolerant, but that does not mean that they evolved without moisture. Nearly every plant has a period of growth and a natural period of dormancy. The challenge is to ensure proper moisture when they are growing (water need) and reducing m ...
... The plants listed in this book are drought-adapted and drought-tolerant, but that does not mean that they evolved without moisture. Nearly every plant has a period of growth and a natural period of dormancy. The challenge is to ensure proper moisture when they are growing (water need) and reducing m ...
Passive and Active Restoration Strategies to Activate Soil
... a pronounced annual water deficit derived from the Precipitation/Evaporation ratio of 0.63. The landscape consists of hills with a low to medium slope formed from sediments from the Tertiary. The soils are alkaline and classified as Typic Ustorthents (USDA soil taxonomy); the most dominant soil use ...
... a pronounced annual water deficit derived from the Precipitation/Evaporation ratio of 0.63. The landscape consists of hills with a low to medium slope formed from sediments from the Tertiary. The soils are alkaline and classified as Typic Ustorthents (USDA soil taxonomy); the most dominant soil use ...
FEEDBACK IN THE PLANT-SOIL SYSTEM Joan G
... The literature from which we explore the extent of plant-soil feedback is highly heterogeneous, as might be expected for a subject covering such a wide range of disciplines and analytic scales. We do not exhaustively examine each pathway of interaction but use recent review articles. The literature ...
... The literature from which we explore the extent of plant-soil feedback is highly heterogeneous, as might be expected for a subject covering such a wide range of disciplines and analytic scales. We do not exhaustively examine each pathway of interaction but use recent review articles. The literature ...
Review article Annual intercrops: an alternative pathway for
... component crops (Willey, 1985). Yield advantage occurs because growth resources such as light, water, and nutrients are more completely absorbed and converted to crop biomass by the intercrop over time and space as a result of differences in competitive ability for growth resources between the compo ...
... component crops (Willey, 1985). Yield advantage occurs because growth resources such as light, water, and nutrients are more completely absorbed and converted to crop biomass by the intercrop over time and space as a result of differences in competitive ability for growth resources between the compo ...
Variable Phytotoxic Effects of Thymus vulgaris (Lamiaceae
... by either nonphenolic (geraniol, a-terpineol, cis-sabinene hydrate, linalool, or 1,8-cineole) or phenolic (carvacrol and thymol) monoterpenes. Using the geraniol, cis-sabinene hydrate, and the two phenolic chemotypes, we tested three hypotheses: (1) chemotypes vary in their influences on germination ...
... by either nonphenolic (geraniol, a-terpineol, cis-sabinene hydrate, linalool, or 1,8-cineole) or phenolic (carvacrol and thymol) monoterpenes. Using the geraniol, cis-sabinene hydrate, and the two phenolic chemotypes, we tested three hypotheses: (1) chemotypes vary in their influences on germination ...
battling bitou bush for biodiversity
... aims to remove bitou bush from surrounding areas to prevent re-infestation while controlling recruitment in stages 1 and 2. Control techniques include aerial and ground application of herbicides, biological control, physical removal, slashing and burning. Fencing and planting may also be required to ...
... aims to remove bitou bush from surrounding areas to prevent re-infestation while controlling recruitment in stages 1 and 2. Control techniques include aerial and ground application of herbicides, biological control, physical removal, slashing and burning. Fencing and planting may also be required to ...
Three^way interactions between Acacia, large mammalian herbivores
... that of Coe & Coe (1987) showed that ingestion by herbivores causes an increase in germination. Acacia pods are readily consumed by large herbivores. Up to 92% of A. tortilis pods and 76.2% of A. nilotica pods are consumed by herbivores (Miller, 1994b). Rohner & Ward (1999) found that the number of ...
... that of Coe & Coe (1987) showed that ingestion by herbivores causes an increase in germination. Acacia pods are readily consumed by large herbivores. Up to 92% of A. tortilis pods and 76.2% of A. nilotica pods are consumed by herbivores (Miller, 1994b). Rohner & Ward (1999) found that the number of ...
effects of competition on resource availability and growth of a
... grasslands prior to European settlement. It is currently distributed throughout lower elevation ranges from the California coast to the Sierra Nevada foothills and generally on nonarable lowland soils or foothill range lands (Huenneke 1989). All target plants in this study were grown from seed colle ...
... grasslands prior to European settlement. It is currently distributed throughout lower elevation ranges from the California coast to the Sierra Nevada foothills and generally on nonarable lowland soils or foothill range lands (Huenneke 1989). All target plants in this study were grown from seed colle ...
Caring for our Country 2012-13 Community Action Grants
... This project will address a significant threat to the biodiversity and habitat values of the Timbarra River by ...
... This project will address a significant threat to the biodiversity and habitat values of the Timbarra River by ...
Agroecology and the Search for a Truly Sustainable Agriculture
... among farmers. Meanwhile, it is also degrading the planet’s life support systems, and increasing alienation of peoples from nature and the historic, cultural and natural connection of farmers and all other people to the sources of food and sustenance. Finally, it is also destroying the economic and ...
... among farmers. Meanwhile, it is also degrading the planet’s life support systems, and increasing alienation of peoples from nature and the historic, cultural and natural connection of farmers and all other people to the sources of food and sustenance. Finally, it is also destroying the economic and ...
Effects of Insect Herbivory on Plant Architecture, Flowering
... rarely have any form of vegetative or asexual reproduction, these plants cannot maintain their ...
... rarely have any form of vegetative or asexual reproduction, these plants cannot maintain their ...
[PDF 253.96KB]
... bag pairs were located in the cultivated area of each field; one pair at the apex of four transect lines running at 90° from the field centre and four others located along each transect line at a distance 35 m from the crop edge. A further five bag pairs were located in the field margins (headlands) ...
... bag pairs were located in the cultivated area of each field; one pair at the apex of four transect lines running at 90° from the field centre and four others located along each transect line at a distance 35 m from the crop edge. A further five bag pairs were located in the field margins (headlands) ...
Tragedy of the commons as a result of root competition
... 1 We develop and test a game-theoretic model for considering the effects of intra- and interplant competition on root proliferation and reproductive yield. 2 We predict that if space and resources per individual are held constant, plants should produce more roots per individual and less reproductive ...
... 1 We develop and test a game-theoretic model for considering the effects of intra- and interplant competition on root proliferation and reproductive yield. 2 We predict that if space and resources per individual are held constant, plants should produce more roots per individual and less reproductive ...
Costs of two non-mutualistic species in a yucca/yucca moth mutualism
... Y. schottii is unusual among yuccas in being pollinated by two dierent yucca moths, Tegeticula yuccasella (Riley) and Parategeticula pollenifera (Davis). Nearly all yucca species are associated with Tegeticula moths; P. pollenifera is found only on Y. schottii and Y. elephantipes (Davis 1967). Here ...
... Y. schottii is unusual among yuccas in being pollinated by two dierent yucca moths, Tegeticula yuccasella (Riley) and Parategeticula pollenifera (Davis). Nearly all yucca species are associated with Tegeticula moths; P. pollenifera is found only on Y. schottii and Y. elephantipes (Davis 1967). Here ...
11 Impact of weeds on threatened biodiversity in New South Wales
... Wales (NSW) and the NSW Department of Environment and Conservation (DEC) for allowing access to internal data sets, listings of NSW threatened species and to the determinations of the NSW Scientific Committee. The authors also thank: Shaan Gresser (DEC) for compiling the initial data set and for ent ...
... Wales (NSW) and the NSW Department of Environment and Conservation (DEC) for allowing access to internal data sets, listings of NSW threatened species and to the determinations of the NSW Scientific Committee. The authors also thank: Shaan Gresser (DEC) for compiling the initial data set and for ent ...
The Melaleuca Menace
... difficult to extinguish. Melaleuca trees are fire‐adapted: not only does fire often not kill them, but fire also promotes their spread by inducing the release of seeds and creating ideal soil conditions for seedling establishment. 4. Invasive to pastures ‐ Melaleuca grows in upland ...
... difficult to extinguish. Melaleuca trees are fire‐adapted: not only does fire often not kill them, but fire also promotes their spread by inducing the release of seeds and creating ideal soil conditions for seedling establishment. 4. Invasive to pastures ‐ Melaleuca grows in upland ...
Granivory of invasive, naturalized, and native plants in communities
... Abstract. Seed predation is an important biotic filter that can influence abundance and spatial distributions of native species through differential effects on recruitment. This filter may also influence the relative abundance of nonnative plants within habitats and the communities’ susceptibility to in ...
... Abstract. Seed predation is an important biotic filter that can influence abundance and spatial distributions of native species through differential effects on recruitment. This filter may also influence the relative abundance of nonnative plants within habitats and the communities’ susceptibility to in ...
3. MANAGING CRESTED WHEATGRASS in Native
... for up to five years, which allows the number of seeds in the soil to accumulate. Crested wheatgrass stands in southeastern Alberta that were 29 to 38 years old, contained 100 to 410 seeds/ m2 in the surface soil. • Good seedling establishment: Seedlings are vigorous and develop in 8 to 12 days unde ...
... for up to five years, which allows the number of seeds in the soil to accumulate. Crested wheatgrass stands in southeastern Alberta that were 29 to 38 years old, contained 100 to 410 seeds/ m2 in the surface soil. • Good seedling establishment: Seedlings are vigorous and develop in 8 to 12 days unde ...
Weed Ecology in Natural and Agricultural Systems
... fere with human land use; colonizers are successful at establishing following disturbance; and invaders are species introduced into their non-native habitat. There is substantial overlap among these terms. A plant may be considered as only one of these, or it may be included in all of these categori ...
... fere with human land use; colonizers are successful at establishing following disturbance; and invaders are species introduced into their non-native habitat. There is substantial overlap among these terms. A plant may be considered as only one of these, or it may be included in all of these categori ...
Models of a four-species annual weed community : growth
... me from the start. They taught me to expect no less than excellence from myself, and I learned much from their examples: my mom's hunger for achievement and perfection, my dad's commitment, patience, and endurance (and his copies of American Scientist at a key point in my early education). Second, I ...
... me from the start. They taught me to expect no less than excellence from myself, and I learned much from their examples: my mom's hunger for achievement and perfection, my dad's commitment, patience, and endurance (and his copies of American Scientist at a key point in my early education). Second, I ...
Foliage shedding in deciduous forests lifts up long
... counterparts (20). Hence, seeds that escape sparser canopies are likely to continue their upward trajectories to higher levels above the surface, where they encounter increasingly higher mean winds. The overall effect on LDD of these two conflicting mechanisms is difficult to quantify, thereby limit ...
... counterparts (20). Hence, seeds that escape sparser canopies are likely to continue their upward trajectories to higher levels above the surface, where they encounter increasingly higher mean winds. The overall effect on LDD of these two conflicting mechanisms is difficult to quantify, thereby limit ...
Action
... * Update database on a regular basis. Develop management policies and practices that do not compromise the ecological integrity of the bushland. * Continue environmental checklist procedures for each hazard reduction burn or clearing operation. * Development of an annual hazard reduction program. * ...
... * Update database on a regular basis. Develop management policies and practices that do not compromise the ecological integrity of the bushland. * Continue environmental checklist procedures for each hazard reduction burn or clearing operation. * Development of an annual hazard reduction program. * ...
Tillage, Crop Rotation, and Cultural Practice Effects on Dryland Soil
... ter use as a result of increased soil water conservation from residue accumulation at the soil surface compared to CT [11,12]. Continuous cropping of diversified crops in the rotation can efficiently utilize water and nutrients and sustain yields compared to monocropping in water-limited dryland far ...
... ter use as a result of increased soil water conservation from residue accumulation at the soil surface compared to CT [11,12]. Continuous cropping of diversified crops in the rotation can efficiently utilize water and nutrients and sustain yields compared to monocropping in water-limited dryland far ...
EVALUATION OF ECOLOGICAL RISK TO POPULATIONS OF A
... grasslands in the Sand Hills of central Nebraska, USA (Louda et al. 1997, Louda 2000a), in sites without the targeted exotic thistles (Lamp and McCarty 1981, Louda et al. 1990). Weevil numbers in the flower heads of Platte thistle (C. canescens) increased exponentially over three years (Louda 1998) ...
... grasslands in the Sand Hills of central Nebraska, USA (Louda et al. 1997, Louda 2000a), in sites without the targeted exotic thistles (Lamp and McCarty 1981, Louda et al. 1990). Weevil numbers in the flower heads of Platte thistle (C. canescens) increased exponentially over three years (Louda 1998) ...
- Wiley Online Library
... 2004). However, it is less clear how often these changes in ecosystem processes and microbial composition cascade to native plants in the community (Reinhart & Callaway 2006; van der Putten et al. 2007). The ability to predict when and where non-native species will have lasting impacts on native com ...
... 2004). However, it is less clear how often these changes in ecosystem processes and microbial composition cascade to native plants in the community (Reinhart & Callaway 2006; van der Putten et al. 2007). The ability to predict when and where non-native species will have lasting impacts on native com ...