Lecture: Concepts of Regeneration
... Some species (for example, many pines) require a mineral seedbed – Mineral seed beds can created by natural disturbances (i.e. fire) or site preparation treatments ...
... Some species (for example, many pines) require a mineral seedbed – Mineral seed beds can created by natural disturbances (i.e. fire) or site preparation treatments ...
PODCAST OUTLINE: THE CLUB MOSSES (LYCOPODIOPHYTA) 1
... 5. Reproductive attributes of sporophyte A. Strobili B. Sporangia C. Spores ...
... 5. Reproductive attributes of sporophyte A. Strobili B. Sporangia C. Spores ...
Lecture: Concepts of Regeneration
... Some species (for example, many pines) require a mineral seedbed – Mineral seed beds can created by natural disturbances (i.e. fire) or site preparation treatments ...
... Some species (for example, many pines) require a mineral seedbed – Mineral seed beds can created by natural disturbances (i.e. fire) or site preparation treatments ...
A Field Manual for Seed Collectors SEED COLLECTING FOR THE
... It is critical to the value of the seed collections that the species is accurately identified, thus collectors are requested to enter comprehensive identification notes on the field data form. If a local expert is not available to identify species, plant identification guides should be used instead. ...
... It is critical to the value of the seed collections that the species is accurately identified, thus collectors are requested to enter comprehensive identification notes on the field data form. If a local expert is not available to identify species, plant identification guides should be used instead. ...
第12章 生活史Life Histories
... Plants vary widely in the number of offspring they produce,ranging from those that produce many small seeds to those that produce a few large seeds. ...
... Plants vary widely in the number of offspring they produce,ranging from those that produce many small seeds to those that produce a few large seeds. ...
Seed Storage - University of Georgia
... heat tolerant than Hemlocks grown from Pennsylvania seed sources. ...
... heat tolerant than Hemlocks grown from Pennsylvania seed sources. ...
common burdock - Ministry of Forests, Lands and Natural Resource
... occurs in riparian areas that have moist, fertile soils with high nitrogen contents. Distribution: Established throughout much of Canada and the US. It is frequent in coastal, west-central, and southern BC from low- to mid-elevations (Douglas et al. 1998). Burdock is a major concern in the Okanagan, ...
... occurs in riparian areas that have moist, fertile soils with high nitrogen contents. Distribution: Established throughout much of Canada and the US. It is frequent in coastal, west-central, and southern BC from low- to mid-elevations (Douglas et al. 1998). Burdock is a major concern in the Okanagan, ...
Lesson 5: Population structure and plant
... Through the animal and vegetable kingdoms, nature has scattered the seeds of life abroad with the most profuse and liberal hand. She has been comparatively sparing in the room and nourishment necessary to rear them. Their germs of existence contained in this spot of earth, with ample food, and ample ...
... Through the animal and vegetable kingdoms, nature has scattered the seeds of life abroad with the most profuse and liberal hand. She has been comparatively sparing in the room and nourishment necessary to rear them. Their germs of existence contained in this spot of earth, with ample food, and ample ...
Patterns of Behavior
... “chisel-like” bill, dexterous feet for holding nuts while perched in a tree, and expandable gular pouch (esophagus) for transporting multiple seeds at one time. Nut trees also facilitate this relationship with seed shape and size that affords being transported, and a smooth shell which allows for pa ...
... “chisel-like” bill, dexterous feet for holding nuts while perched in a tree, and expandable gular pouch (esophagus) for transporting multiple seeds at one time. Nut trees also facilitate this relationship with seed shape and size that affords being transported, and a smooth shell which allows for pa ...
A wetland oasis – Fortescue Marsh Inside this issue
... high. The species is related to Grevillea crithmifolia but has hairy branchlets, smaller leaves and hard-coated seed pods with irregular projections. Grevillea murex was first collected north of Three Springs by C. Chapman in 1975, with subsequent collections made between there and the Mingenew–Mora ...
... high. The species is related to Grevillea crithmifolia but has hairy branchlets, smaller leaves and hard-coated seed pods with irregular projections. Grevillea murex was first collected north of Three Springs by C. Chapman in 1975, with subsequent collections made between there and the Mingenew–Mora ...
Numbat - Department of Parks and Wildlife
... Numbats are solitary and t erritorial. Home ranges (area of occupancy) are exclusive of other individuals of the same sex, with male home ranges overlapping female home ranges. Home range sizes vary from 25-50 ha, but males roam in search of females over a larger area prior to the onset of breeding. ...
... Numbats are solitary and t erritorial. Home ranges (area of occupancy) are exclusive of other individuals of the same sex, with male home ranges overlapping female home ranges. Home range sizes vary from 25-50 ha, but males roam in search of females over a larger area prior to the onset of breeding. ...
1. Large Processes with Small Targets: Rarity and Pollination in
... 2003) might have a starting point similar to that of herbivores that, over evolutionary time, have been converted into pollinators. Even some pathogenic fungi have been found playing a role in pollination in the Lambir Hills environment (Sakai et al. 2000). The transition from pathogen or herbivore ...
... 2003) might have a starting point similar to that of herbivores that, over evolutionary time, have been converted into pollinators. Even some pathogenic fungi have been found playing a role in pollination in the Lambir Hills environment (Sakai et al. 2000). The transition from pathogen or herbivore ...
Download chapter 3
... stabilization plans for more information). Plant populations units (PUs) For the Oahu plants, the OIP followed the basic population size criteria developed by the Hawaii and Pacific Plants Recovery Coordinating Committee (HPPRCC 1994), the same criteria used in the MIP (see paragraphs below). Becaus ...
... stabilization plans for more information). Plant populations units (PUs) For the Oahu plants, the OIP followed the basic population size criteria developed by the Hawaii and Pacific Plants Recovery Coordinating Committee (HPPRCC 1994), the same criteria used in the MIP (see paragraphs below). Becaus ...
Quercus garryana - University of Washington
... Collection restrictions or guidelines Acorns ripen from late August to November. This is a masting species that only produces heavy acorn crops periodically. Seeds must be kept moist between collection and sowing to ensure viability. (Silvics of North America) Seed germination Seeds are not dormant ...
... Collection restrictions or guidelines Acorns ripen from late August to November. This is a masting species that only produces heavy acorn crops periodically. Seeds must be kept moist between collection and sowing to ensure viability. (Silvics of North America) Seed germination Seeds are not dormant ...
How did this mutualism evolve?
... Evolution of syndromes for a subset of pollinators, e.g. bat-pollinated flowers are white, open for easy access, high amounts of nectar at night, lots of pollen to compensate for high nectar costs ...
... Evolution of syndromes for a subset of pollinators, e.g. bat-pollinated flowers are white, open for easy access, high amounts of nectar at night, lots of pollen to compensate for high nectar costs ...
Boneseed (Chyrsantemoides monilifera subsp. monilifera, best
... Biology and ecological notes: Boneseed is not widely grazed in Australia compared to populations in South Africa, which are often heavily attacked by a range of plant-eating species. In Australia, it is eaten by generalist insects that cause minor damage. Boneseed is a relatively short-lived shrub ( ...
... Biology and ecological notes: Boneseed is not widely grazed in Australia compared to populations in South Africa, which are often heavily attacked by a range of plant-eating species. In Australia, it is eaten by generalist insects that cause minor damage. Boneseed is a relatively short-lived shrub ( ...
UAA Natural Heritage Program, Weed Ranking Project (PDF)
... soil and vegetation increases greatly seedling emergence and establishment of bull thistle. Potential for long-distance dispersal: Most seeds fall within three feet of the parent plant, but up to 10 percent may travel distances with little wind (Klinkhamer et al. 1988). Potential to be spread by hum ...
... soil and vegetation increases greatly seedling emergence and establishment of bull thistle. Potential for long-distance dispersal: Most seeds fall within three feet of the parent plant, but up to 10 percent may travel distances with little wind (Klinkhamer et al. 1988). Potential to be spread by hum ...
Consumer-Resource Interactions I
... number of susceptible individuals declines, R < 1 and the epidemic declines. Vaccinations decrease the number of susceptible people and thwart the epidemic growth of a disease. In the simplest version of this model (single generation), oscillations don’t occur because there is no production of new ...
... number of susceptible individuals declines, R < 1 and the epidemic declines. Vaccinations decrease the number of susceptible people and thwart the epidemic growth of a disease. In the simplest version of this model (single generation), oscillations don’t occur because there is no production of new ...
021
... Because Urera has separate male and female plants and is wind-pollinated, it is susceptible to low seed set when populations become low within a small area. As a result, it may have difficulty recovering naturally even if direct threats are removed (Magnacca). In addition to the habitat alteration, ...
... Because Urera has separate male and female plants and is wind-pollinated, it is susceptible to low seed set when populations become low within a small area. As a result, it may have difficulty recovering naturally even if direct threats are removed (Magnacca). In addition to the habitat alteration, ...
- Smithsonian Tropical Research Institute
... to refine their estimate of the true decline in seed movement. Frugivores disperse an unknown number of seeds between fruiting conspecifics as they move between fruiting trees. The proportion of such seeds—found beneath a seed-bearing conspecific that was not their genetic mother—was significantly l ...
... to refine their estimate of the true decline in seed movement. Frugivores disperse an unknown number of seeds between fruiting conspecifics as they move between fruiting trees. The proportion of such seeds—found beneath a seed-bearing conspecific that was not their genetic mother—was significantly l ...
Final Report - Rufford Small Grants
... 3. Briefly describe the three most important outcomes of your project. We verified in the reciprocal transplant experiment that there is no influence of the seed origin, maternal effect and genetic difference, in the seedling establishment in the two locations for both populations of Euterpe edulis ...
... 3. Briefly describe the three most important outcomes of your project. We verified in the reciprocal transplant experiment that there is no influence of the seed origin, maternal effect and genetic difference, in the seedling establishment in the two locations for both populations of Euterpe edulis ...
Recommendations for the Collection and Use of Native Plants
... Collect ripe seeds (firm, plump, and dry). Seeds are usually ripe six to eight weeks after flowering. Usually the stem will be brown and dry. Make sure you label seed when you collect them. Make sure seeds are dry before storing and then store in a cool, dry place. Heat and moisture will deteriorate ...
... Collect ripe seeds (firm, plump, and dry). Seeds are usually ripe six to eight weeks after flowering. Usually the stem will be brown and dry. Make sure you label seed when you collect them. Make sure seeds are dry before storing and then store in a cool, dry place. Heat and moisture will deteriorate ...
Allele Frequency Lab: Variation in a Pumpkin Species
... population and cause evolution to occur. Introduction: Allele frequency refers to how often an allele occurs in a population. Allele frequencies can change in a population over time, depending on the ‘selective forces’ shaping that population. Predation, food availability, and disease are all exampl ...
... population and cause evolution to occur. Introduction: Allele frequency refers to how often an allele occurs in a population. Allele frequencies can change in a population over time, depending on the ‘selective forces’ shaping that population. Predation, food availability, and disease are all exampl ...
Banksia brownii
Banksia brownii, commonly known as Feather-leaved Banksia or Brown's Banksia, is a species of shrub that grows in southwest Western Australia. An attractive plant with fine feathery leaves and large red-brown flower spikes, it usually grows as an upright bush around two metres (7 ft) high, but can also occur as a small tree or a low spreading shrub. First collected in 1829 and published the following year, it is placed in Banksia subgenus Banksia, section Oncostylis, series Spicigerae. There are two genetically distinct forms.B. brownii occurs naturally only in two population clusters between Albany and the Stirling Range in southwest Western Australia. In the Stirling Range it occurs among heath on rocky mountain slopes; further south it occurs among Jarrah woodland in shallow nutrient-poor sand. It is rare and endangered in its natural habitat, with all major populations currently threatened by Phytophthora cinnamomi dieback, a disease to which the species is highly susceptible. Other threats include loss of habitat, commercial exploitation and changes to the fire regime.Highly valued by Australia's horticultural and cut flower industries, B. brownii is widely cultivated in areas not exposed to dieback. It prefers a sheltered position in soil with good drainage, and must be provided with some moisture over summer.