Life Science Unit
... 1. Were the numbers of plants and animals in the different areas (including your local area) similar or different? Explain your answer. 2. You looked at different areas and predicted if animals or plants had the most matter. Was there a pattern in your predictions among these different areas? For ...
... 1. Were the numbers of plants and animals in the different areas (including your local area) similar or different? Explain your answer. 2. You looked at different areas and predicted if animals or plants had the most matter. Was there a pattern in your predictions among these different areas? For ...
The Riparian Buffer as a Stormwater Best Management Practice
... and surface soil layers, removing it from runoff; pesticides are formed into gases by the anaerobic conditions in leaf litter and surface soil layers or are taken up as nutrients by plants and trees, removing them from runoff; pesticides are also transformed and biodegraded.24 Buffers have multipl ...
... and surface soil layers, removing it from runoff; pesticides are formed into gases by the anaerobic conditions in leaf litter and surface soil layers or are taken up as nutrients by plants and trees, removing them from runoff; pesticides are also transformed and biodegraded.24 Buffers have multipl ...
The Manipulation of Plant Toxins by a Food
... these compounds (Swift et al. 1979, Stout 1989). Herbivorous animals that hoard food may take advantage of these natural preservatives by biasing their cache with plants high in these chemicals. Moreover, stored plant material with high concentrations of secondary compounds may facilitate the preser ...
... these compounds (Swift et al. 1979, Stout 1989). Herbivorous animals that hoard food may take advantage of these natural preservatives by biasing their cache with plants high in these chemicals. Moreover, stored plant material with high concentrations of secondary compounds may facilitate the preser ...
Do changes in berry crops drive population fluctuations in small C
... changes in this ecosystem (Boonstra et al. 2001). The food habits of these 4 species differ dramatically (Bergman and Krebs 1993; Dyke 1971; Martell and Macaulay 1981; Reich 1981; West 1982), and this is associated with their different habitat preferences. Microtus oeconomus and M. pennsylvanicus pr ...
... changes in this ecosystem (Boonstra et al. 2001). The food habits of these 4 species differ dramatically (Bergman and Krebs 1993; Dyke 1971; Martell and Macaulay 1981; Reich 1981; West 1982), and this is associated with their different habitat preferences. Microtus oeconomus and M. pennsylvanicus pr ...
Ecological Effects of Pesticides
... more species in the food-web. The many connections that a keystone species holds means that it maintains the organization and structure of entire communities. The loss of a keystone species results in a range of dramatic cascading effects that alters trophic dynamics, other food-web connections and ...
... more species in the food-web. The many connections that a keystone species holds means that it maintains the organization and structure of entire communities. The loss of a keystone species results in a range of dramatic cascading effects that alters trophic dynamics, other food-web connections and ...
Fisheries catches and the carrying capacity of marine ecosystems in
... the southeast, primary production is mainly driven by seasonal upwelling of nutrient-rich, cold subtropical waters pumped by alongshore winds and by cyclonic vortexes originated from the Brazil Current (Bakun and Parrish, 1990; Matsuura, 1995). The southern part of the Brazilian coast is under the i ...
... the southeast, primary production is mainly driven by seasonal upwelling of nutrient-rich, cold subtropical waters pumped by alongshore winds and by cyclonic vortexes originated from the Brazil Current (Bakun and Parrish, 1990; Matsuura, 1995). The southern part of the Brazilian coast is under the i ...
The impact of nitrogen deposition on acid grasslands in the Atlantic
... Pearson and Stewart, 1993; Sheppard and Leith, 2002). Concentrations of ammonia high enough to cause direct toxicity are quite rare in Europe and generally only occur in the immediate vicinity of point sources. However, at lower levels, the effects of N deposition on vegetation can still be observed ...
... Pearson and Stewart, 1993; Sheppard and Leith, 2002). Concentrations of ammonia high enough to cause direct toxicity are quite rare in Europe and generally only occur in the immediate vicinity of point sources. However, at lower levels, the effects of N deposition on vegetation can still be observed ...
Introduction to Watershed Ecology
... texture (see Definitions below). Soils often vary substantially from place to place within a watershed, and among different watersheds. To describe their differences, soils are classified into soil orders (see Soil Orders box). Knowing the basic differences among types of soils can be useful for und ...
... texture (see Definitions below). Soils often vary substantially from place to place within a watershed, and among different watersheds. To describe their differences, soils are classified into soil orders (see Soil Orders box). Knowing the basic differences among types of soils can be useful for und ...
natural selection favors rapid reproductive
... seed numbers would indicate that quick flowering is adaptive in a given environment. Such work can greatly enhance traditional measures of phenological variation along high altitude snowmelt gradients by directly testing hypotheses about the adaptive significance of flowering quickly or slowly in di ...
... seed numbers would indicate that quick flowering is adaptive in a given environment. Such work can greatly enhance traditional measures of phenological variation along high altitude snowmelt gradients by directly testing hypotheses about the adaptive significance of flowering quickly or slowly in di ...
The ecological module of BOATS-1.0
... group. We employ groups since they allow us to make use of well-studied growth and mortality characteristics of fish of different asymptotic size (Andersen and Beyer, 2006; Maury and Poggiale, 2013). We work with a finite number of groups as opposed to a continuum (as in Andersen and Beyer, 2006; Ma ...
... group. We employ groups since they allow us to make use of well-studied growth and mortality characteristics of fish of different asymptotic size (Andersen and Beyer, 2006; Maury and Poggiale, 2013). We work with a finite number of groups as opposed to a continuum (as in Andersen and Beyer, 2006; Ma ...
Our Natural Heritage, Bioregional Pride
... In the curriculum we refer to four ecological regions and their corresponding ecosystems. The names of these ecosystems are based on their vegetative communities, for instance, chaparral. However, an ecosystem is made up of all biotic and abiotic elements and their interactions. In other words, when ...
... In the curriculum we refer to four ecological regions and their corresponding ecosystems. The names of these ecosystems are based on their vegetative communities, for instance, chaparral. However, an ecosystem is made up of all biotic and abiotic elements and their interactions. In other words, when ...
Natural History of Fungi
... The fungus must facilitate photosynthesis in the alga by providing ample sunlight, carbon dioxide, and water. In foliose or leaf-like lichens, the fungus has adapted a form that is resembles modern plant leaves. The fungus provides the upper and lower surface scaffolding to support a middle layer ri ...
... The fungus must facilitate photosynthesis in the alga by providing ample sunlight, carbon dioxide, and water. In foliose or leaf-like lichens, the fungus has adapted a form that is resembles modern plant leaves. The fungus provides the upper and lower surface scaffolding to support a middle layer ri ...
sample
... 13. Richard is an avid gardener who spends a lot of time caring for the plants in his garden. To minimize damage from pests from his garden, Richard uses a pesticide spray. At first the spray is very effective and kills off most of the insects that he sees on his vegetable plants. However, after a ...
... 13. Richard is an avid gardener who spends a lot of time caring for the plants in his garden. To minimize damage from pests from his garden, Richard uses a pesticide spray. At first the spray is very effective and kills off most of the insects that he sees on his vegetable plants. However, after a ...
Natural enemy interactions constrain pest control in complex
... provision (15, 18, 21, 22), despite the documented importance of landscapes in regulating species functional diversity (5, 6, 23–25). Given the implications for landscape-wide effectiveness of biological control and other biodiversity-dependent services, scaling up the interaction mechanisms of func ...
... provision (15, 18, 21, 22), despite the documented importance of landscapes in regulating species functional diversity (5, 6, 23–25). Given the implications for landscape-wide effectiveness of biological control and other biodiversity-dependent services, scaling up the interaction mechanisms of func ...
Owl Clover Leads a Complex Life - Habeck
... is accelerated. The Owl Clover gains water, minerals and energy from the host plant. Being an annual, Owl Clover has a relatively small root system, so getting extra food really helps its growth rate. This host-parasite relationship is called heterotrophy, the opposite of autotrophy. Being semi-par ...
... is accelerated. The Owl Clover gains water, minerals and energy from the host plant. Being an annual, Owl Clover has a relatively small root system, so getting extra food really helps its growth rate. This host-parasite relationship is called heterotrophy, the opposite of autotrophy. Being semi-par ...
pdf file
... fuels, primarily coal, are the principal sources of increased sulfur oxides. These sources, plus the transportation sector, are the major originators of increased nitrogen oxides. The problem of acid rain not only has increased with population and industrial growth, it has become more widespread. Th ...
... fuels, primarily coal, are the principal sources of increased sulfur oxides. These sources, plus the transportation sector, are the major originators of increased nitrogen oxides. The problem of acid rain not only has increased with population and industrial growth, it has become more widespread. Th ...
4.0 weed control - University of Hawaii at Manoa
... colonization need to be planted with native species or a temporary cover species in order to exclude more aggressive weeds and eventually achieve forest canopy closure. Regular site monitoring and follow-up management of restoration sites and adjacent areas is necessary for long-term success (Porteo ...
... colonization need to be planted with native species or a temporary cover species in order to exclude more aggressive weeds and eventually achieve forest canopy closure. Regular site monitoring and follow-up management of restoration sites and adjacent areas is necessary for long-term success (Porteo ...
Do species and functional groups differ in acquisition
... that under elevated CO2 (H7a ). Under elevated CO2, reduced leaf level water loss could minimize the decline in percentage soil water compared to that experienced in the high N treatment (H7b ). Although there are an increasing number of tests of the CO2 × N interaction hypothesis in general and of ...
... that under elevated CO2 (H7a ). Under elevated CO2, reduced leaf level water loss could minimize the decline in percentage soil water compared to that experienced in the high N treatment (H7b ). Although there are an increasing number of tests of the CO2 × N interaction hypothesis in general and of ...
Environmental variation has stronger effects than plant genotype on
... 4. In greenhouse experiments, we detected heritable variation in O. biennis for above-ground and below-ground growth, and O. biennis varied genetically in response to competition, indicating the potential for adaptive evolution in response to selection by competitors. 5. Variation among O. biennis g ...
... 4. In greenhouse experiments, we detected heritable variation in O. biennis for above-ground and below-ground growth, and O. biennis varied genetically in response to competition, indicating the potential for adaptive evolution in response to selection by competitors. 5. Variation among O. biennis g ...
environmental science and engineering
... 23. What are the advantages of rain water harvesting? Ans: Advantages of rain water harvesting – Reduction in the use of current for pumping water, increase the availability of water from the wells, rise in ground water levels, minimizing soil erosion and flood hazards, upgrading social and environm ...
... 23. What are the advantages of rain water harvesting? Ans: Advantages of rain water harvesting – Reduction in the use of current for pumping water, increase the availability of water from the wells, rise in ground water levels, minimizing soil erosion and flood hazards, upgrading social and environm ...
Grasshoppers: Life Cycle, Damage Asessment and Management
... Clear-winged grasshopper has been on average, the most economically important species of grasshopper in Canada, although over the years its importance relative to other species has changed gradually. The first record from the Prairie Provinces was from Saskatchewan in 1800. Clear-winged grasshoppers ...
... Clear-winged grasshopper has been on average, the most economically important species of grasshopper in Canada, although over the years its importance relative to other species has changed gradually. The first record from the Prairie Provinces was from Saskatchewan in 1800. Clear-winged grasshoppers ...
Aquaculture: global status and trends
... (i) Freshwater ponds and tanks Freshwaters were the source for 60 per cent of the world aquaculture production in 2008 (56% by value), despite they only constituting 3 per cent of the planet’s waters and only 0.3 per cent of that being surface water (figure 4). Of this, 65.9 per cent were carp and o ...
... (i) Freshwater ponds and tanks Freshwaters were the source for 60 per cent of the world aquaculture production in 2008 (56% by value), despite they only constituting 3 per cent of the planet’s waters and only 0.3 per cent of that being surface water (figure 4). Of this, 65.9 per cent were carp and o ...
Species interactions and energy transfer in aquatic food webs
... the true diet components undergo before they are eventually measured either in the stomach or as isotope composition of a consumers tissue. DNA sequences of dietary items may be modified or partly broken by the time they are measured in a consumer gut (King et al. 2008, Thomas et al. 2014), and simi ...
... the true diet components undergo before they are eventually measured either in the stomach or as isotope composition of a consumers tissue. DNA sequences of dietary items may be modified or partly broken by the time they are measured in a consumer gut (King et al. 2008, Thomas et al. 2014), and simi ...
626.pdf
... axillary buds (Cook and Stoddart 1958; Hyder 1972; Briske 1986). When the apical meristem is removed by grazing, leaf replacement originates from axillary buds, which require the greatest time interval following defoliation (Briske 1986). In contrast to the Great Plains, sagebrush-steppe plant comm ...
... axillary buds (Cook and Stoddart 1958; Hyder 1972; Briske 1986). When the apical meristem is removed by grazing, leaf replacement originates from axillary buds, which require the greatest time interval following defoliation (Briske 1986). In contrast to the Great Plains, sagebrush-steppe plant comm ...