Class A Foam Mixing and Application Equipment
... straight bore and combination. When using adjustable flow rate nozzles with manually regulated proportioning systems, changing the nozzle flow rate requires adjustment to the proportioner. These type of nozzles produce a wet foam that is most effectively used for direct and indirect attack and overh ...
... straight bore and combination. When using adjustable flow rate nozzles with manually regulated proportioning systems, changing the nozzle flow rate requires adjustment to the proportioner. These type of nozzles produce a wet foam that is most effectively used for direct and indirect attack and overh ...
Rhododendron in Snowdonia - Snowdonia National Park Authority
... both moorland and heathland is widespread in areas such as the Migneint, the Berwyn Mountains and Mynydd Hiraethog, all of which are protected under either national or European law due to their ecological importance. Whilst the majority of these habitats are to be found in upland areas, they can als ...
... both moorland and heathland is widespread in areas such as the Migneint, the Berwyn Mountains and Mynydd Hiraethog, all of which are protected under either national or European law due to their ecological importance. Whilst the majority of these habitats are to be found in upland areas, they can als ...
The habitat condition data dictionary
... West and east side of the Cascade Mountains, coastal watersheds, large rivers (Columbia) and small tributaries in urban and rural watersheds ...
... West and east side of the Cascade Mountains, coastal watersheds, large rivers (Columbia) and small tributaries in urban and rural watersheds ...
Oulanka Research Station, FINLAND September 8th – 11th, 2014
... Björn Malmqvist was one of the Nordic region’s leading stream and river ecologists, who combined a love of traditional, species-focused natural history with strongly question driven research, which drew on his broad knowledge of the wider ecological literature. This is demonstrated above all by the ...
... Björn Malmqvist was one of the Nordic region’s leading stream and river ecologists, who combined a love of traditional, species-focused natural history with strongly question driven research, which drew on his broad knowledge of the wider ecological literature. This is demonstrated above all by the ...
On the carrying capacity for large ungulates of African savanna
... The effect of pastoral management on the standing crop biomass of large ungulates, an index of carrying capacity, is analysed at a regional level by using data compiled from published sources covering east and south Africa. The effect of primary production is controlled for by using two environmenta ...
... The effect of pastoral management on the standing crop biomass of large ungulates, an index of carrying capacity, is analysed at a regional level by using data compiled from published sources covering east and south Africa. The effect of primary production is controlled for by using two environmenta ...
chapt13_lecture
... • The shelf is an important area for larvae and juveniles of many species as well as adults. • A wide variety of organisms can be found on/in the continental shelf. Some of the most common includes sponges, cnidarians, worms, molluscs, fish and echinoderms. ...
... • The shelf is an important area for larvae and juveniles of many species as well as adults. • A wide variety of organisms can be found on/in the continental shelf. Some of the most common includes sponges, cnidarians, worms, molluscs, fish and echinoderms. ...
Factors Influencing Macroinvertebrate Diversity and Community
... Temporary rock pools can present an obvious challenge to any aquatic organisms that reside in them. Because rock pools are temporary they typically pass through three distinct phases: filling, aquatic and drying. Each phase may contain different fauna and flora groups (Therriault and Kolsa 2001). Du ...
... Temporary rock pools can present an obvious challenge to any aquatic organisms that reside in them. Because rock pools are temporary they typically pass through three distinct phases: filling, aquatic and drying. Each phase may contain different fauna and flora groups (Therriault and Kolsa 2001). Du ...
Inventory of aquatic plants in the Danube Delta: a pilot study
... The aquatic macrophytes were surveyed in September 1999 in 37 survey units distributed in the Danube Delta as follows: two units, 1800 m length, located on the left side of the Tulcea arm (miles 35 and 34); 13 units, 1000 m length, located on the left and right side of the Sf. Gheorghe arm (river km ...
... The aquatic macrophytes were surveyed in September 1999 in 37 survey units distributed in the Danube Delta as follows: two units, 1800 m length, located on the left side of the Tulcea arm (miles 35 and 34); 13 units, 1000 m length, located on the left and right side of the Sf. Gheorghe arm (river km ...
The State of South Africa`s Biodiversity 2012
... lubricates the economy, and it allows people to live better, healthier lives. We often don’t realise, though, that the natural environment is also a kind of ‘infrastructure’. It’s more intricate and sophisticated than the built environment that we value so highly, and it’s even more critical to our ...
... lubricates the economy, and it allows people to live better, healthier lives. We often don’t realise, though, that the natural environment is also a kind of ‘infrastructure’. It’s more intricate and sophisticated than the built environment that we value so highly, and it’s even more critical to our ...
Floodplains - Missouri Stream Team
... rougher the floodplain, the slower the floodwaters will become when moving across the land. Rough boundaries, or hydraulic roughness, between flowing water and the land surface slow down more floodwater energy than smooth boundaries. Flood height, or water level, topography and vegetation control hy ...
... rougher the floodplain, the slower the floodwaters will become when moving across the land. Rough boundaries, or hydraulic roughness, between flowing water and the land surface slow down more floodwater energy than smooth boundaries. Flood height, or water level, topography and vegetation control hy ...
Sample Chapter Anthropogenic Impacts
... organisms in San Francisco Bay are mainly introduced forms, with more than 200 nonindigenous species now inhabiting bay waters and wetland habitat (Kennish, 2000). Some exotic species inhabiting estuaries have been accidentally introduced via ballast water or some other means. Nearly all estuaries a ...
... organisms in San Francisco Bay are mainly introduced forms, with more than 200 nonindigenous species now inhabiting bay waters and wetland habitat (Kennish, 2000). Some exotic species inhabiting estuaries have been accidentally introduced via ballast water or some other means. Nearly all estuaries a ...
Meta-ecosystems: a theoretical framework for a spatial ecosystem
... primary productivity and species diversity at both the local and landscape or regional scales. Significant exchanges of materials and organisms also occur at the interface between terrestrial and aquatic ecosystems. Secondary productivity in rivers and lakes is often supported by litter inputs from ...
... primary productivity and species diversity at both the local and landscape or regional scales. Significant exchanges of materials and organisms also occur at the interface between terrestrial and aquatic ecosystems. Secondary productivity in rivers and lakes is often supported by litter inputs from ...
Energetic Adaptations Along a Broad Latitudinal Gradient
... continues to emerge that local adaptations involving tradeoffs between growth and other physical or behavioral traits lead to different distributions of reaction norms among populations, with important consequences for patterns of community composition across broad environmental gradients. We are sp ...
... continues to emerge that local adaptations involving tradeoffs between growth and other physical or behavioral traits lead to different distributions of reaction norms among populations, with important consequences for patterns of community composition across broad environmental gradients. We are sp ...
Managing arid zone natural resources in Australia for spatial and
... patterns are often accentuated by the frequent correlation of resource concentrations such as those of nutrients with moving water, and of soil types with landscape position (Pickup 1985; Stafford Smith and Morton 1990). These forms of redistribution happen at many scales from metres through to whol ...
... patterns are often accentuated by the frequent correlation of resource concentrations such as those of nutrients with moving water, and of soil types with landscape position (Pickup 1985; Stafford Smith and Morton 1990). These forms of redistribution happen at many scales from metres through to whol ...
Blowing in the wind: how many roads can a phytoplanktont walk
... continental waters and facilitating inter-basin transfer, increasing water hardness due to sand erosion, and herbicide use. In this case, a direct relationship between toxic blooms and the increased external nutrients loadings (eutrophication) could not be supported. Increasing evidence substantiate ...
... continental waters and facilitating inter-basin transfer, increasing water hardness due to sand erosion, and herbicide use. In this case, a direct relationship between toxic blooms and the increased external nutrients loadings (eutrophication) could not be supported. Increasing evidence substantiate ...
Physical factors influencing active emergence of meiofauna from
... gradient. Leaving the sediment and moving in the water column (either actively or by the help of currents; Armonies 1988b) may improve the physical environment without much energy expenditure. Laboratory studies of oxygen, temperature, salinity and light exposure effects on the meiobenthic emergence ...
... gradient. Leaving the sediment and moving in the water column (either actively or by the help of currents; Armonies 1988b) may improve the physical environment without much energy expenditure. Laboratory studies of oxygen, temperature, salinity and light exposure effects on the meiobenthic emergence ...
Two-year temporal response of benthic macrofauna and sediments
... Abstract: Hypoxia is the depletion of dissolved oxygen below 2 mg O2/L. Relatively few studies on hypoxia and its effects on benthic macrofauna have been done in tropical marine ecosystems. This study describes the temporal response of the water column, sediments and macrofauna to seasonal hypoxia i ...
... Abstract: Hypoxia is the depletion of dissolved oxygen below 2 mg O2/L. Relatively few studies on hypoxia and its effects on benthic macrofauna have been done in tropical marine ecosystems. This study describes the temporal response of the water column, sediments and macrofauna to seasonal hypoxia i ...
Fact sheet Blue green algae
... Nutrient availability - phosphorus and nitrogen are the main nutrients that contribute to the formation of blue-green algae. Temperature and light - blooms generally occur in the warmer months due to increased water temperature and optimal light conditions. Water changes temperature at different dep ...
... Nutrient availability - phosphorus and nitrogen are the main nutrients that contribute to the formation of blue-green algae. Temperature and light - blooms generally occur in the warmer months due to increased water temperature and optimal light conditions. Water changes temperature at different dep ...
The Community Builder: Beaver`s Role in the Ecological Community
... not only their well-being, but that of others as well. They are building communities. The community builder. We can learn from the beaver – learn to understand and work with the place; be flexible and adapt to the organic and ever-changing environment; work hard, efficiently, instinctively; create s ...
... not only their well-being, but that of others as well. They are building communities. The community builder. We can learn from the beaver – learn to understand and work with the place; be flexible and adapt to the organic and ever-changing environment; work hard, efficiently, instinctively; create s ...
A comparison of alpha and beta diversity patterns of ferns
... vascular plant cover (Kessler et al, in press; Gabriel and Bates 2005). These studies, however, did not separate liverworts from mosses, nor between epiphytic and terrestrial species. Overall, numerous studies have found that patterns of alpha diversity between different higher level taxa show only ...
... vascular plant cover (Kessler et al, in press; Gabriel and Bates 2005). These studies, however, did not separate liverworts from mosses, nor between epiphytic and terrestrial species. Overall, numerous studies have found that patterns of alpha diversity between different higher level taxa show only ...
140818 PPR Redef of Anthroposphere R7.1
... omnivores and top predators, and we are 100% dependent on it to live. Our continued existence depends on a wide range of species located throughout the tropic web, from the bacteria in the soil that fix nitrogen, to the worms that aerate the soil, to the great variety of plants and animals that we u ...
... omnivores and top predators, and we are 100% dependent on it to live. Our continued existence depends on a wide range of species located throughout the tropic web, from the bacteria in the soil that fix nitrogen, to the worms that aerate the soil, to the great variety of plants and animals that we u ...
Envir. Exam 2 Study Guide
... Know how humans use levees, dikes, aqueducts, and dams to control water Levees- large bank built up on each side of the river, dike- built to prevent ocean waters from flooding adjacent land, aqueducts- are canals or ditches used to carry, water from one location to another, damsbarrier that runs ...
... Know how humans use levees, dikes, aqueducts, and dams to control water Levees- large bank built up on each side of the river, dike- built to prevent ocean waters from flooding adjacent land, aqueducts- are canals or ditches used to carry, water from one location to another, damsbarrier that runs ...
Habitats and species diversity: relationships in the Danube Delta
... environment of the Black Sea and the presence of a large continental shelf. The shelf is gently inclined offshore (9.80 per mile on the eastern meridian 31°), reaches a depth of about 200 m, and has the greatest width in the north-western part of the Black Sea, just in front of the mouth of the Danu ...
... environment of the Black Sea and the presence of a large continental shelf. The shelf is gently inclined offshore (9.80 per mile on the eastern meridian 31°), reaches a depth of about 200 m, and has the greatest width in the north-western part of the Black Sea, just in front of the mouth of the Danu ...
River ecosystem
The ecosystem of a river is the river viewed as a system operating in its natural environment, and includes biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions.River ecosystems are prime examples of lotic ecosystems. Lotic refers to flowing water, from the Latin lotus, washed. Lotic waters range from springs only a few centimeters wide to major rivers kilometers in width. Much of this article applies to lotic ecosystems in general, including related lotic systems such as streams and springs. Lotic ecosystems can be contrasted with lentic ecosystems, which involve relatively still terrestrial waters such as lakes and ponds. Together, these two fields form the more general study area of freshwater or aquatic ecology. The following unifying characteristics make the ecology of running waters unique from that of other aquatic habitats. Flow is unidirectional. There is a state of continuous physical change. There is a high degree of spatial and temporal heterogeneity at all scales (microhabitats). Variability between lotic systems is quite high. The biota is specialized to live with flow conditions.↑ ↑ ↑ ↑