Definitions
... • Some minimum number of species is essential for maintaining ecosystem function under constant conditions • A larger number of species is probably required for maintaining ecosystems in changing environments • Determining which species have significant impact on which processes in which ecosystem r ...
... • Some minimum number of species is essential for maintaining ecosystem function under constant conditions • A larger number of species is probably required for maintaining ecosystems in changing environments • Determining which species have significant impact on which processes in which ecosystem r ...
Caddisflies: Architects Under Water
... An entirely different strategy is followed by the case-making families. These larvae forage actively for food and build portable cases, which they carry with them as they move over the stream bottom (Figs. 4, 10). Principal foods of case-making larvae include decaying plant materials such as leaves ...
... An entirely different strategy is followed by the case-making families. These larvae forage actively for food and build portable cases, which they carry with them as they move over the stream bottom (Figs. 4, 10). Principal foods of case-making larvae include decaying plant materials such as leaves ...
LIST OF ABSTRACTS - Wisconsin AFS > Home
... Abstract: Cisco (Coregonus artedi) are important prey for several economicallyimportant sportfish species, particularly lake trout (Salvelinus namaycush), muskellunge (Esox masquinongy) and walleye (Sander vitreus). Unfortunately, cisco appear to be declining in parts of the Midwest. Wisconsin has 1 ...
... Abstract: Cisco (Coregonus artedi) are important prey for several economicallyimportant sportfish species, particularly lake trout (Salvelinus namaycush), muskellunge (Esox masquinongy) and walleye (Sander vitreus). Unfortunately, cisco appear to be declining in parts of the Midwest. Wisconsin has 1 ...
Reproductive dynamics of three amphibian species in
... These species typically thrive in widely varying environments (Joly & Morand, 1994; Morand & Joly, 1995). To reduce predation pressure at the larval stage, many amphibian species breed in fish-free habitats that exhibit large fluctuations of their flooding conditions (Hecnar & M’closkey, 1997; Smith ...
... These species typically thrive in widely varying environments (Joly & Morand, 1994; Morand & Joly, 1995). To reduce predation pressure at the larval stage, many amphibian species breed in fish-free habitats that exhibit large fluctuations of their flooding conditions (Hecnar & M’closkey, 1997; Smith ...
Traits underpinning desiccation resistance explain distribution
... water mass and time and was expressed as the proportion of initial water content that was lost per hour. The relationship between water mass and time was linear for all species with R2 varying from 0.75 to 0.99. Fatal water loss was expressed as the proportion of the initial water content that was l ...
... water mass and time and was expressed as the proportion of initial water content that was lost per hour. The relationship between water mass and time was linear for all species with R2 varying from 0.75 to 0.99. Fatal water loss was expressed as the proportion of the initial water content that was l ...
Chapter 4
... - Severely degraded systems cease to function • Ecological restoration = efforts to restore communities • Restoration is informed by restoration ecology = the science of restoring an area to an earlier condition - To restore the system’s functionality (i.e. filtering of water by a wetland) - It is d ...
... - Severely degraded systems cease to function • Ecological restoration = efforts to restore communities • Restoration is informed by restoration ecology = the science of restoring an area to an earlier condition - To restore the system’s functionality (i.e. filtering of water by a wetland) - It is d ...
- New Zealand Ecological Society
... significantly in lowland and montane areas in response to the expansion of agriculture. Currently only about 10% remain (McGlone 2009), and most of these are severely modified, with significant ingress of exotic plant species. The conservation management of wetlands is challenging because of the hig ...
... significantly in lowland and montane areas in response to the expansion of agriculture. Currently only about 10% remain (McGlone 2009), and most of these are severely modified, with significant ingress of exotic plant species. The conservation management of wetlands is challenging because of the hig ...
TideZoneGuide - Fitzgerald Marine Reserve
... of the ocean during earthquake activity. (Several large cracks in the earth called geological faults, all part of the greater San Andreas fault system, run through the reserve and out into the ocean.) When the rocks rose above the surface of the ocean, the waves began wearing them away through erosi ...
... of the ocean during earthquake activity. (Several large cracks in the earth called geological faults, all part of the greater San Andreas fault system, run through the reserve and out into the ocean.) When the rocks rose above the surface of the ocean, the waves began wearing them away through erosi ...
CHAPTER 7: Freshwater
... Runoff from fertilizers used in commercial agriculture or private yards adds large amounts of nitrogen and phosphorus to freshwater ecosystems. This can be especially problematic in lowland areas and in lakes or rivers with developed shores. The added nutrients lead to excess growth of algae (which ...
... Runoff from fertilizers used in commercial agriculture or private yards adds large amounts of nitrogen and phosphorus to freshwater ecosystems. This can be especially problematic in lowland areas and in lakes or rivers with developed shores. The added nutrients lead to excess growth of algae (which ...
Manuscript for Marine Ecology Progress Series
... characterized based on latitude (Menge & Lubchenco 1981, Broitman et al. 2001). In more distinctly tropical areas of the eastern Pacific (located north of the equator, with usually warm water and low nutrient levels), intertidal communities tend to be dominated by crustose algae (SibajaCordero & Cor ...
... characterized based on latitude (Menge & Lubchenco 1981, Broitman et al. 2001). In more distinctly tropical areas of the eastern Pacific (located north of the equator, with usually warm water and low nutrient levels), intertidal communities tend to be dominated by crustose algae (SibajaCordero & Cor ...
AGE 301: PHYSICAL GEOGRAPHY
... In this lesson, the characteristics and global distribution of three fundamental climatic elements, namely temperature, evaporation and precipitation will be discussed. In Physical Geography II, climate was defined as the average conditions of the atmosphere near the earth’s surface over a period of ...
... In this lesson, the characteristics and global distribution of three fundamental climatic elements, namely temperature, evaporation and precipitation will be discussed. In Physical Geography II, climate was defined as the average conditions of the atmosphere near the earth’s surface over a period of ...
Full-text PDF - Association for the Sciences of Limnology
... comments at length on one of the more conspicuous maldanids, C. torquata. Its maximum density per unit volume of scdiment was the largest of all species encountered, although the variation over the total study area was considerable. He concludes that its abundance is associated with depth and with t ...
... comments at length on one of the more conspicuous maldanids, C. torquata. Its maximum density per unit volume of scdiment was the largest of all species encountered, although the variation over the total study area was considerable. He concludes that its abundance is associated with depth and with t ...
Organisms and Their Environment
... One of the most important things about a species’ niche is how the species gets its energy. Ecologists study the flow of energy through communities to discover nutritional relationships between organisms. Autotrophs The ultimate source of energy for all life is the sun. Plants use the sun’s energy t ...
... One of the most important things about a species’ niche is how the species gets its energy. Ecologists study the flow of energy through communities to discover nutritional relationships between organisms. Autotrophs The ultimate source of energy for all life is the sun. Plants use the sun’s energy t ...
Slide 1
... Large zooplankton are superior competitors for food (phytoplankton) because of greater filtering efficiency Planktivorous fish selectively consume large-bodied, competitively superior plankton ...
... Large zooplankton are superior competitors for food (phytoplankton) because of greater filtering efficiency Planktivorous fish selectively consume large-bodied, competitively superior plankton ...
351 - Teaching Biology and Science Blog
... __F_ 1. Biotic factors in a habitat include all the physical aspects as well as the living organisms. __F__ 2. Biotic factors of a habitat include all abiotic factors. __T__ 3. A change in the number of predators or prey in a food web can alter the entire ecosystem in which they live. __F__ 4. A lon ...
... __F_ 1. Biotic factors in a habitat include all the physical aspects as well as the living organisms. __F__ 2. Biotic factors of a habitat include all abiotic factors. __T__ 3. A change in the number of predators or prey in a food web can alter the entire ecosystem in which they live. __F__ 4. A lon ...
Wildlife - Georgia Envirothon
... includes everything living in the pond. Populations in a community are connected by relationships, such as predator-prey or parasite-host among others. These relationships are very important in understanding the roles wildlife play in their community and the population number that can be supported i ...
... includes everything living in the pond. Populations in a community are connected by relationships, such as predator-prey or parasite-host among others. These relationships are very important in understanding the roles wildlife play in their community and the population number that can be supported i ...
the water framework directive: using fish as a management tool
... consistency across all EU states, and this must be achieved through an intercalibration process. It appears to have been assumed that much more was known about fish communities than was actually known and that some form of ecological monitoring of this element was in place in European rivers, lakes ...
... consistency across all EU states, and this must be achieved through an intercalibration process. It appears to have been assumed that much more was known about fish communities than was actually known and that some form of ecological monitoring of this element was in place in European rivers, lakes ...