Artistic and Historical Monuments: Threatened Ecosystems
... three substances they secrete: carbon dioxide, lichen compounds with complex properties, and oxalic acid. Carbon dioxide, produced through respiration, when in an aqueous environment produces an acid solution that, although weak, can solubilize relatively insoluble salts such as calcium and magnesiu ...
... three substances they secrete: carbon dioxide, lichen compounds with complex properties, and oxalic acid. Carbon dioxide, produced through respiration, when in an aqueous environment produces an acid solution that, although weak, can solubilize relatively insoluble salts such as calcium and magnesiu ...
Biodiversity for kids - Teacher`s Guide
... places they live (ecosystems). In referring to schoolyard biodiversity you will be talking about all the different kinds of plants and animals found in the school. An important aspect of biodiversity that is not always apparent is the interconnectedness between all species, in other words the way in ...
... places they live (ecosystems). In referring to schoolyard biodiversity you will be talking about all the different kinds of plants and animals found in the school. An important aspect of biodiversity that is not always apparent is the interconnectedness between all species, in other words the way in ...
Resource Depletion and Habitat Segregation by Competitors Under
... depleted over the course of the experiment, and a single size class of foragers. Below, we use the "minimize ulf" hypothesis to develop a model which predicts how depletable resources will be structured by a single size class using two sites differing in predation hazard. The model is then extended ...
... depleted over the course of the experiment, and a single size class of foragers. Below, we use the "minimize ulf" hypothesis to develop a model which predicts how depletable resources will be structured by a single size class using two sites differing in predation hazard. The model is then extended ...
Crop Domestication and Its Impact on Naturally Selected Trophic
... selected by humans for desirable traits and to be adapted to the conditions of cultivation (52, 133). There is accumulating evidence that crop domestication has profoundly altered tritrophic interactions between plants, insects, and their natural enemies. In general, domesticated crop plants tend to ...
... selected by humans for desirable traits and to be adapted to the conditions of cultivation (52, 133). There is accumulating evidence that crop domestication has profoundly altered tritrophic interactions between plants, insects, and their natural enemies. In general, domesticated crop plants tend to ...
Single-species models for many
... the cycles19–21). Mink and muskrat series were analysed because there is evidence that they are causally involved in a distinct cycle19, as were the mountain and brown hare series22. (3) To conform to the discrete-time theory, series were excluded if maturation takes less than one year and breeding ...
... the cycles19–21). Mink and muskrat series were analysed because there is evidence that they are causally involved in a distinct cycle19, as were the mountain and brown hare series22. (3) To conform to the discrete-time theory, series were excluded if maturation takes less than one year and breeding ...
Biotic and abiotic interactions controlling starfish
... Directly or indirectly, the role of sea water temperature may be a factor causing the formation of starfish aggregations. Fluctuations in the numbers of Asterias juveniles in the Bay of Douarnenez during our study were correlated with water temperatures in Brittany (Guillou, 1990). From 1981 to 1984 ...
... Directly or indirectly, the role of sea water temperature may be a factor causing the formation of starfish aggregations. Fluctuations in the numbers of Asterias juveniles in the Bay of Douarnenez during our study were correlated with water temperatures in Brittany (Guillou, 1990). From 1981 to 1984 ...
Droughtinduced woody plant mortality in an encroached semiarid
... Methods: Following an exceptional drought from 1951 to 1957, a study was conducted to quantify rates of mortality for various woody plant species. In 2011, we repeated this study within three long-term grazing treatments that were established in 1948. Ten transects were established in each treatment ...
... Methods: Following an exceptional drought from 1951 to 1957, a study was conducted to quantify rates of mortality for various woody plant species. In 2011, we repeated this study within three long-term grazing treatments that were established in 1948. Ten transects were established in each treatment ...
Transformations - NSDL Project Archive
... Too ambitious a task E.g.Trying to translate all critters in ADW or translation without vocabulary rules ...
... Too ambitious a task E.g.Trying to translate all critters in ADW or translation without vocabulary rules ...
Effects of shading on relative competitive
... and the Sphagnum species present in open areas, such as S. fallax, are considered less shade-tolerant (Fenton & Bergeron 2006), having lower ...
... and the Sphagnum species present in open areas, such as S. fallax, are considered less shade-tolerant (Fenton & Bergeron 2006), having lower ...
Energy flow of a boreal intertidal ecosystem, the Sylt
... between the components of the system. Second, we examined the functional processes (e.g. cycling of material, trophic efficiencies) and global ecosystem properties (e.g. total system activity, development capacity, ascendancy) by means of network analysis. Finally, we compared the output results der ...
... between the components of the system. Second, we examined the functional processes (e.g. cycling of material, trophic efficiencies) and global ecosystem properties (e.g. total system activity, development capacity, ascendancy) by means of network analysis. Finally, we compared the output results der ...
Presentation
... • Pink hibiscus mealybug (PHM) has been a major pest in the Caribbean basin • PHM appeared in Florida in June 2002 • No eradication attempt was made • Biological controls of PHM are determined to work well ...
... • Pink hibiscus mealybug (PHM) has been a major pest in the Caribbean basin • PHM appeared in Florida in June 2002 • No eradication attempt was made • Biological controls of PHM are determined to work well ...
12 Wildlife Habitat Tips for Small Acreages - MP478
... species you want to encourage. It is useful to target your habitat management toward specific species or feature species. Those habitat manage ment practices which benefit a feature species will also likely benefit a host of other wildlife requiring similar habitat. Conversely, some habi tat pract ...
... species you want to encourage. It is useful to target your habitat management toward specific species or feature species. Those habitat manage ment practices which benefit a feature species will also likely benefit a host of other wildlife requiring similar habitat. Conversely, some habi tat pract ...
SHELLFISH AQUACULTURE - In Praise of Sustainable Economies
... (capture + culture) has increased continuously and substantially over the past half century, rising from approximately 1 million tonnes in 1950 to about 11 million tonnes in 1999. This growth is primarily due to aquaculture (Anderson 2002). As the global population continues to grow, demand and prod ...
... (capture + culture) has increased continuously and substantially over the past half century, rising from approximately 1 million tonnes in 1950 to about 11 million tonnes in 1999. This growth is primarily due to aquaculture (Anderson 2002). As the global population continues to grow, demand and prod ...
Ecosystem consequences of diversity depend on food chain length
... focuses on beds of eelgrass (Zostera marina), the northern hemisphere’s most widespread and abundant benthic marine plant (Fig. 1). Submerged macrophytes provide several important ecosystem services, stabilizing mobile sediments, creating essential three-dimensional habitat for fishery and forage sp ...
... focuses on beds of eelgrass (Zostera marina), the northern hemisphere’s most widespread and abundant benthic marine plant (Fig. 1). Submerged macrophytes provide several important ecosystem services, stabilizing mobile sediments, creating essential three-dimensional habitat for fishery and forage sp ...
Organisms and food webs in rock pools
... and exposure to pollutants were studied by comparing rock pool Gummurus duebeni and littoral G. oceanicus with different tolerance to abiotic stress. Physiological and life history responses of rock pool Duphniu magna to different salinities were examined, Experimental systems, originating from natu ...
... and exposure to pollutants were studied by comparing rock pool Gummurus duebeni and littoral G. oceanicus with different tolerance to abiotic stress. Physiological and life history responses of rock pool Duphniu magna to different salinities were examined, Experimental systems, originating from natu ...
ecosystem
... • Gaseous carbon, oxygen, sulfur, and nitrogen occur in the atmosphere and cycle globally • Less mobile elements such as phosphorus, potassium, and calcium cycle on a more local level ...
... • Gaseous carbon, oxygen, sulfur, and nitrogen occur in the atmosphere and cycle globally • Less mobile elements such as phosphorus, potassium, and calcium cycle on a more local level ...
The Nitrogen Cycle
... converted to ammonia (NH3) and then to ammonium (NH4+) Ammonia is an organic form of nitrogen, so it can not be absorbed by plants Ammonium is created when ammonia combines with a hydrogen ion (H+) Natural or industrial processes (such as lightning and bacteria) cause free nitrogen to combine with o ...
... converted to ammonia (NH3) and then to ammonium (NH4+) Ammonia is an organic form of nitrogen, so it can not be absorbed by plants Ammonium is created when ammonia combines with a hydrogen ion (H+) Natural or industrial processes (such as lightning and bacteria) cause free nitrogen to combine with o ...
Shoreline Erosion Site Inspection Report: Sherwood Forest Property
... native stabilizing plants. Switchgrass (Panicum vigatum) is the most highly recommended species for a situation like this. It has very strong fibrous roots that grow seven times as long as the above ground material. These grasses very effectively stabilize shoreline sediments and are attractive, oft ...
... native stabilizing plants. Switchgrass (Panicum vigatum) is the most highly recommended species for a situation like this. It has very strong fibrous roots that grow seven times as long as the above ground material. These grasses very effectively stabilize shoreline sediments and are attractive, oft ...
Definitions of Biodiversity and Measures of Its Value
... surviving representatives and the single surviving species of a particular genus, the latter would trump the former. There is now near-uniform agreement that not all species can be maintained given the many needs of a human population at six billion and growing and the political realities that growt ...
... surviving representatives and the single surviving species of a particular genus, the latter would trump the former. There is now near-uniform agreement that not all species can be maintained given the many needs of a human population at six billion and growing and the political realities that growt ...
FLOW Unit 1: Food Web Overview - the National Sea Grant Library
... snake and aquatic plant populations? (This food chain will also be disrupted in a chain reaction. First, the water snake population will increase, and second, the water snakes will eat and deplete herbivores. Third, since the herbivores have been depleted, aquatic plant populations will increase.) 5 ...
... snake and aquatic plant populations? (This food chain will also be disrupted in a chain reaction. First, the water snake population will increase, and second, the water snakes will eat and deplete herbivores. Third, since the herbivores have been depleted, aquatic plant populations will increase.) 5 ...
Compensation masks trophic cascades in complex food
... and Wise, 2001). Given that human actions are disproportionately altering biomass of top predators (Estes et al, 2011), there is a pressing need to understand under what circumstances such changes will or won’t cascade through complex food webs (Terborgh et al, ...
... and Wise, 2001). Given that human actions are disproportionately altering biomass of top predators (Estes et al, 2011), there is a pressing need to understand under what circumstances such changes will or won’t cascade through complex food webs (Terborgh et al, ...
Production - Palomar College
... groups than any other type of economy – caring for siblings – fetching water – hauling fuel ...
... groups than any other type of economy – caring for siblings – fetching water – hauling fuel ...
AP Environmental Science - East Pennsboro Area School District
... Compare the energy efficiencies of the extraction and conversion of different fuels. Discuss the uses and consequences of using coal, oil, natural gas, and nuclear energy. Describe strategies to conserve energy and increase energy efficiency. Describe the environmental and economic options we must a ...
... Compare the energy efficiencies of the extraction and conversion of different fuels. Discuss the uses and consequences of using coal, oil, natural gas, and nuclear energy. Describe strategies to conserve energy and increase energy efficiency. Describe the environmental and economic options we must a ...
University of Idaho - Idaho Rangeland Resource Commission
... creates areas of rangeland that are overgrazed. Range plants are designed to withstand some grazing. In fact, proper grazing can improve the health of many types of rangeland. However, if too much green material is removed from plants, they cannot recover from grazing and overgrazing occurs. Overgra ...
... creates areas of rangeland that are overgrazed. Range plants are designed to withstand some grazing. In fact, proper grazing can improve the health of many types of rangeland. However, if too much green material is removed from plants, they cannot recover from grazing and overgrazing occurs. Overgra ...