![Plant Diversity Affects Performance of Invasive Thistles in Restored](http://s1.studyres.com/store/data/017443558_1-f694e3d9cf9f0e7b248bdbf29787d7cd-300x300.png)
Plant Diversity Affects Performance of Invasive Thistles in Restored
... establish in an ecosystem where there is an available niche. It can take advantage of a recent disturbance or opening caused by fire, flooding or overgrazing. If there are no natural enemies to control its population, whether it is insects, herbivores, or pathogens, an invasive may be more successfu ...
... establish in an ecosystem where there is an available niche. It can take advantage of a recent disturbance or opening caused by fire, flooding or overgrazing. If there are no natural enemies to control its population, whether it is insects, herbivores, or pathogens, an invasive may be more successfu ...
The Zone of Pyroclastic Deposits
... No historic eruption demonstrated how volcanoes changed history more than did that of Thera, today known as Santorini (about 1623 B.C.). This date was determined by carbon dating of horse bones and is a bit earlier than that determined by historical methods. Today, the remnant islands form an archip ...
... No historic eruption demonstrated how volcanoes changed history more than did that of Thera, today known as Santorini (about 1623 B.C.). This date was determined by carbon dating of horse bones and is a bit earlier than that determined by historical methods. Today, the remnant islands form an archip ...
Volume 2, Chapter 12-4: Terrestrial Insects: Hemimetabola
... Vance (1978) added further to the explanation of seeming exceptions. He took the position that one means by which two closely related species can co-exist is by having "suitable differences in spatial refuges from the predator, differences in appearance and/or location which induce frequency-depende ...
... Vance (1978) added further to the explanation of seeming exceptions. He took the position that one means by which two closely related species can co-exist is by having "suitable differences in spatial refuges from the predator, differences in appearance and/or location which induce frequency-depende ...
Sand Hill Arthropods in Canadian Grasslands
... disturbance has served to allow dispersal of sand-adapted organisms between dune fields. Intergrades between two subspecies of the tiger beetle Cicindela limbata Say are found only along sandy road cuts in the vicinity of La Ronge, Saskatchewan (Acorn 1992). Sand borrow pits and stockpiles are also ...
... disturbance has served to allow dispersal of sand-adapted organisms between dune fields. Intergrades between two subspecies of the tiger beetle Cicindela limbata Say are found only along sandy road cuts in the vicinity of La Ronge, Saskatchewan (Acorn 1992). Sand borrow pits and stockpiles are also ...
spatial variation in molluscan assemblages from coralline turfs of
... sieve. All molluscs retained on the 500 mm sieve were sorted and identified using a binocular microscope (12 magnification). Although there are other taxa associated with these mat-like habitats, molluscan assemblages were the main focus because they are numerically-dominant, encompass important func ...
... sieve. All molluscs retained on the 500 mm sieve were sorted and identified using a binocular microscope (12 magnification). Although there are other taxa associated with these mat-like habitats, molluscan assemblages were the main focus because they are numerically-dominant, encompass important func ...
Investigation of sympatric speciation as the outcome of competition
... Sympatric speciation, the emergence of new species in the absence of geographic isolation, is one of the most controversial issues in evolutionary biology. Although today the plausibility of the occurrence of sympatric speciation is theoretically acknowledged, its underlying mechanisms are still unk ...
... Sympatric speciation, the emergence of new species in the absence of geographic isolation, is one of the most controversial issues in evolutionary biology. Although today the plausibility of the occurrence of sympatric speciation is theoretically acknowledged, its underlying mechanisms are still unk ...
Freshwater Mussels Pacific Northwest
... other benthic macroinvertebrates52,89,106. Their vertical and horizontal movements help stir sediments and increase the exchange of oxygen and nutrients between the sediment and water108. They serve a function similar to earthworms in your garden by allowing sediment to retain more organic matter an ...
... other benthic macroinvertebrates52,89,106. Their vertical and horizontal movements help stir sediments and increase the exchange of oxygen and nutrients between the sediment and water108. They serve a function similar to earthworms in your garden by allowing sediment to retain more organic matter an ...
UNIT 2 Practice TEST
... a. It is initiated by pioneer species. b. It often involves species changing the environment so that they can no longer thrive and must be replaced by other species. c. It generally results in more complex, more self-sustaining stages than the preceding ones. d. It is an orderly progression from pio ...
... a. It is initiated by pioneer species. b. It often involves species changing the environment so that they can no longer thrive and must be replaced by other species. c. It generally results in more complex, more self-sustaining stages than the preceding ones. d. It is an orderly progression from pio ...
A trophic cascade induced by predatory ants in a figfig wasp
... different developmental stages The results of the ant survey (see above) showed that Oecophylla smaragdina was the most common species in Xishuangbanna. In our next survey, we recorded the number of O. smaragdina ants on each fruit cluster and NPFWs on the surface of figs at different developmental ...
... different developmental stages The results of the ant survey (see above) showed that Oecophylla smaragdina was the most common species in Xishuangbanna. In our next survey, we recorded the number of O. smaragdina ants on each fruit cluster and NPFWs on the surface of figs at different developmental ...
American Mink (Mustela vison) and its impact on native species in
... al. 2002). The Grey has out-competed the native Red, which is believed to be inferior in terms of foraging ability, thus limiting its competitive efficiency (Bryce et al. 2002). In its native range of North America, the Grey competes with multiple species of squirrel. The Red only competed intraspec ...
... al. 2002). The Grey has out-competed the native Red, which is believed to be inferior in terms of foraging ability, thus limiting its competitive efficiency (Bryce et al. 2002). In its native range of North America, the Grey competes with multiple species of squirrel. The Red only competed intraspec ...
Surveys of Species at Risk and their Associated Habitats in the
... create Clowhom Reservoir, resulting in the loss of lowland riparian forests and wetlands. There is an urgent need to map and assess remaining wetland and riparian areas in the Clowhom watershed, survey associated species at risk, and identify and carry out restoration and enhancement activities to b ...
... create Clowhom Reservoir, resulting in the loss of lowland riparian forests and wetlands. There is an urgent need to map and assess remaining wetland and riparian areas in the Clowhom watershed, survey associated species at risk, and identify and carry out restoration and enhancement activities to b ...
Direct and indirect effects of the introduced alga Sargassum
... Kelp growth experiment. I used a kelp growth experiment at 2 sites in July 2000 to test the hypothesis that Sargassum muticum negatively affects kelp growth. I used the native kelp Laminaria bongardiana (formerly L. groenlandica), which was the most common kelp at the 2 removal experiment sites, as ...
... Kelp growth experiment. I used a kelp growth experiment at 2 sites in July 2000 to test the hypothesis that Sargassum muticum negatively affects kelp growth. I used the native kelp Laminaria bongardiana (formerly L. groenlandica), which was the most common kelp at the 2 removal experiment sites, as ...
ABSTRACT Title of Document:
... being there for me, you are wonderful friends and I’m so lucky to have you. Athena and Apollo, I miss you guys. You always listened so patiently and knew when I needed a hug. Auggie, you are doing a great job holding down the fort and taking on the role of best dog ever. Mousecar de la Joya, say no ...
... being there for me, you are wonderful friends and I’m so lucky to have you. Athena and Apollo, I miss you guys. You always listened so patiently and knew when I needed a hug. Auggie, you are doing a great job holding down the fort and taking on the role of best dog ever. Mousecar de la Joya, say no ...
Halting the illegal trade of cites species from world heritage
... WWF is one of the world’s largest and most experienced independent conservation organizations, with over 5 million supporters and a global network active in more than 100 countries. WWF’s mission is to stop the degradation of the planet’s natural environment and to build a future in which humans liv ...
... WWF is one of the world’s largest and most experienced independent conservation organizations, with over 5 million supporters and a global network active in more than 100 countries. WWF’s mission is to stop the degradation of the planet’s natural environment and to build a future in which humans liv ...
journal.pone.0170
... 11], or by the presence of a third competitive species that may moderate the effects of the competition (like e.g., grayling Thymallus thymallus [9], or perch Perca fluviatilis, [11]. Arctic charr is the World´s northernmost freshwater species, are typically cold-water adapted [12–13], and thereby s ...
... 11], or by the presence of a third competitive species that may moderate the effects of the competition (like e.g., grayling Thymallus thymallus [9], or perch Perca fluviatilis, [11]. Arctic charr is the World´s northernmost freshwater species, are typically cold-water adapted [12–13], and thereby s ...
pdf file
... environment…. How living things change what they do or what they are to survive in a particular environment. In this the organism is not a passive recipient of external circumstances; the relationship is interactive. adaptive radiation - The evolutionary divergence of a single ancestor species into ...
... environment…. How living things change what they do or what they are to survive in a particular environment. In this the organism is not a passive recipient of external circumstances; the relationship is interactive. adaptive radiation - The evolutionary divergence of a single ancestor species into ...
white rock wind farm pty limited
... The study area is situated within the Border Rivers/Gwyder Catchment Management Area (CMA). The Inverell Local Government Area’s natural environment consists of open forests, woodlands, riparian communities, sedgelands, wetlands and aquatic habitats. Broader district and regional conservation areas ...
... The study area is situated within the Border Rivers/Gwyder Catchment Management Area (CMA). The Inverell Local Government Area’s natural environment consists of open forests, woodlands, riparian communities, sedgelands, wetlands and aquatic habitats. Broader district and regional conservation areas ...
Ocinebrellus inornatus_Duckwall_2009
... ability to feed is determined by its ability to drill a hole through the shell of its prey, it is limited to prey with shells that can be easily drilled through. The shell thickness of the prey is the main deterrent of oyster drill success. They are limited to preying upon individuals with shell thi ...
... ability to feed is determined by its ability to drill a hole through the shell of its prey, it is limited to prey with shells that can be easily drilled through. The shell thickness of the prey is the main deterrent of oyster drill success. They are limited to preying upon individuals with shell thi ...
On the Status of Vermin - DigitalCommons@CalPoly
... Unfortunately, data are not available over a sufficiently long period to estimate long term trend patters or what might be considered as normal populations fluctuations.” (Ibid., 56) If the 1979 harvest is far below the 1983 objective, there would need to be a great population boost to maintain the ...
... Unfortunately, data are not available over a sufficiently long period to estimate long term trend patters or what might be considered as normal populations fluctuations.” (Ibid., 56) If the 1979 harvest is far below the 1983 objective, there would need to be a great population boost to maintain the ...
Biodiversity and resilience of ecosystem functions
... governed by both ecological and social factors (e.g. business demand-supply chains), in this article, we focus on the proximate biological processes such as productivity, pest control, pollination that determine the supply of ecosystem services. Effect traits: Attributes of the individuals of a spec ...
... governed by both ecological and social factors (e.g. business demand-supply chains), in this article, we focus on the proximate biological processes such as productivity, pest control, pollination that determine the supply of ecosystem services. Effect traits: Attributes of the individuals of a spec ...
Positive interactions between the lichen Usnea antarctica
... microclimatic conditions beneath their canopies, we measured temperature, soil moisture and nutrient content within and outside cushions at both study sites. In addition, we recorded a daily cycle of temperature and photosynthetic active radiation (PAR) within and outside cushions of U. antarctica. ...
... microclimatic conditions beneath their canopies, we measured temperature, soil moisture and nutrient content within and outside cushions at both study sites. In addition, we recorded a daily cycle of temperature and photosynthetic active radiation (PAR) within and outside cushions of U. antarctica. ...
Stoichiometry of nutrient excretion by fish: interspecific variation in a
... to explore how nutrient release by fish follows stoichiometric predictions. Gizzard shad (Dorosoma cepedianum ) are facultative detritivores (Yako et al. 1996) that are found in most reservoirs, natural lakes and large rivers in the lower midwest and southern United States (Johnson et al. 1988, Vann ...
... to explore how nutrient release by fish follows stoichiometric predictions. Gizzard shad (Dorosoma cepedianum ) are facultative detritivores (Yako et al. 1996) that are found in most reservoirs, natural lakes and large rivers in the lower midwest and southern United States (Johnson et al. 1988, Vann ...
Volcanism and arthropods: a review
... chlorine and fluoride gasses. Fine ash particles are dispersed several thousand kilometers by wind, while larger particles settle closer to the volcano (Ayris & Delmelle 2012). The frequency of volcanic disturbances that affect a given area may be high in some regions. In fact, fifteen volcanoes hav ...
... chlorine and fluoride gasses. Fine ash particles are dispersed several thousand kilometers by wind, while larger particles settle closer to the volcano (Ayris & Delmelle 2012). The frequency of volcanic disturbances that affect a given area may be high in some regions. In fact, fifteen volcanoes hav ...
effects of algal and herbivore diversity on the partitioning of biomass
... of each algal species in monoculture and polyculture using correlation coefficients. I calculated correlations for bottles without herbivores (after 7, 30, and 60 d), and for bottles with herbivores (after 60 d), and applied sequential Bonferroni correction to determine the statistical significance ...
... of each algal species in monoculture and polyculture using correlation coefficients. I calculated correlations for bottles without herbivores (after 7, 30, and 60 d), and for bottles with herbivores (after 60 d), and applied sequential Bonferroni correction to determine the statistical significance ...
The Mineral Nutrition of Wild Plants Revisited: A Re
... whereas detrital P is mostly ester-bonded and often soluble. Due to the production of extracellular phosphatases, this phosphorus may quickly become available for plant uptake again (Hunt et al., 1983; Howarth, 1988) whereas carbon-bonded N may be immobilized for a long time. This would promote N-li ...
... whereas detrital P is mostly ester-bonded and often soluble. Due to the production of extracellular phosphatases, this phosphorus may quickly become available for plant uptake again (Hunt et al., 1983; Howarth, 1988) whereas carbon-bonded N may be immobilized for a long time. This would promote N-li ...
Bifrenaria
![](https://commons.wikimedia.org/wiki/Special:FilePath/Bifrenaria_tyrianthina_Orchi_01.jpg?width=300)
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.