Rapid, landscape scale responses in riparian tundra
... extensive exclosure experiment was run for three years on river sediment plains along two river catchments in low-arctic Norway. The river catchments were similar in species pools but differed in species abundance composition of both plants and vertebrate herbivores. Biomass of forbs, deciduous shru ...
... extensive exclosure experiment was run for three years on river sediment plains along two river catchments in low-arctic Norway. The river catchments were similar in species pools but differed in species abundance composition of both plants and vertebrate herbivores. Biomass of forbs, deciduous shru ...
Pseudomys novaehollandiae, New Holland Mouse
... • Predation by feral cats (severe, especially in association with frequent fire): feral Domestic Cats (Felis catus) occur through entire range of this species, including Flinders Island. Cats are significant predators of native mice, but probably significantly affect subpopulations only when the hab ...
... • Predation by feral cats (severe, especially in association with frequent fire): feral Domestic Cats (Felis catus) occur through entire range of this species, including Flinders Island. Cats are significant predators of native mice, but probably significantly affect subpopulations only when the hab ...
Willow-characterised shrub vegetation in tundra and its relation to
... years 2007–2008 I was offered a possibility to work at the Botanical museum of Helsinki. During this time Teuvo Ahti helped me with lichen identication and Henry Väre with willow specimens. When staying in Rovaniemi, I was offered accommodation and laboratory facilities by the Finnish Forest Resear ...
... years 2007–2008 I was offered a possibility to work at the Botanical museum of Helsinki. During this time Teuvo Ahti helped me with lichen identication and Henry Väre with willow specimens. When staying in Rovaniemi, I was offered accommodation and laboratory facilities by the Finnish Forest Resear ...
Clonal growth and plant species abundance - Clo-Pla
... species, potential reproduction, rather than just measuring morphological traits that may or may not influence reproductive potential. Although there can be a number of issues regarding data from these records (e.g. reproduction assessments not necessarily fully quantitative, small sample sizes, wee ...
... species, potential reproduction, rather than just measuring morphological traits that may or may not influence reproductive potential. Although there can be a number of issues regarding data from these records (e.g. reproduction assessments not necessarily fully quantitative, small sample sizes, wee ...
Riparian forestry management and adult stream insects
... predation. Isolated individual or small groups of trees can play an important role as markers for swarming species (Peng et al., 1992b). However. the extent to which variation in microclimatic conditions is reduced within forestry relative to open ground is highly dependent on the size of the forest ...
... predation. Isolated individual or small groups of trees can play an important role as markers for swarming species (Peng et al., 1992b). However. the extent to which variation in microclimatic conditions is reduced within forestry relative to open ground is highly dependent on the size of the forest ...
Biodiversity and ecosystem functioning in angiosperm
... Diversity can be divided into α diversity, which is defined as local richness, for example populations in patches or communities within-habitats, β diversity, which is the change in diversity in local populations or communities between habitats, and γ diversity that incorporates both α and β diversi ...
... Diversity can be divided into α diversity, which is defined as local richness, for example populations in patches or communities within-habitats, β diversity, which is the change in diversity in local populations or communities between habitats, and γ diversity that incorporates both α and β diversi ...
temporospatial distributions of elk, mule deer, and cattle: resource
... Nonetheless, important theoretical and applied questions regarding competition remain unresolved. We tested hypotheses concerning resource partitioning, habitat selection, and competition among free-ranging cattle, Rocky Mountain elk (C. e. nelsoni), and Rocky Mountain mule deer (O. h. hemionus). We ...
... Nonetheless, important theoretical and applied questions regarding competition remain unresolved. We tested hypotheses concerning resource partitioning, habitat selection, and competition among free-ranging cattle, Rocky Mountain elk (C. e. nelsoni), and Rocky Mountain mule deer (O. h. hemionus). We ...
Feral cats and the fitoaty: first population assessment of the black
... Kelly 2011; Farris et al. 2012, 2014, 2015b) and provide the first photographic data of the presence of feral cats and the recently described fitoaty across this region, including photographic captures that allow for ecological and morphological comparison of both cats across eastern rainforest habi ...
... Kelly 2011; Farris et al. 2012, 2014, 2015b) and provide the first photographic data of the presence of feral cats and the recently described fitoaty across this region, including photographic captures that allow for ecological and morphological comparison of both cats across eastern rainforest habi ...
The phenology of growth and reproduction in plants
... of plant life-cycles, and has been studied on every scale, from the level of the community (Murali & Sukumar 1994) to that of the individual flower (Herrera 1995a). In most plant communities, although at least some species will be in flower throughout the growing season, there is a tendency for peak ...
... of plant life-cycles, and has been studied on every scale, from the level of the community (Murali & Sukumar 1994) to that of the individual flower (Herrera 1995a). In most plant communities, although at least some species will be in flower throughout the growing season, there is a tendency for peak ...
environmental impacts from snowmobile use
... death rates for aquatic insects and amphibians (Charette et. al.,1990). The impact of the spring release of pollutants may have far-reaching consequences for surrounding watersheds. Acidity fluctuations can disable a watershed's ability to regulate its own pH level, which could trigger system-wide p ...
... death rates for aquatic insects and amphibians (Charette et. al.,1990). The impact of the spring release of pollutants may have far-reaching consequences for surrounding watersheds. Acidity fluctuations can disable a watershed's ability to regulate its own pH level, which could trigger system-wide p ...
Primary Succession and Ecosystem Rehabilitation
... reduce crop production through flooding or indirectly reduce visits by tourists. Both consequences disrupt the local economy but efforts to restore crops and revive tourism can stimulate economic development. In the growing field of ecological economics, resources are assigned values, the maintenanc ...
... reduce crop production through flooding or indirectly reduce visits by tourists. Both consequences disrupt the local economy but efforts to restore crops and revive tourism can stimulate economic development. In the growing field of ecological economics, resources are assigned values, the maintenanc ...
Are We Putting Our Fish in Hot Water?
... Because freshwater ecosystems continuously channel precipitation from the surrounding landscape through the interconnected lakes, rivers, and wetlands that lie below, they can be surprisingly sensitive to distant activities. Increasing human water needs and extensive land alteration has contributed ...
... Because freshwater ecosystems continuously channel precipitation from the surrounding landscape through the interconnected lakes, rivers, and wetlands that lie below, they can be surprisingly sensitive to distant activities. Increasing human water needs and extensive land alteration has contributed ...
Sc 10 Ecology Unit Notes ppt
... - predation plays an important role in shaping communities. - help to control the size of prey populations. - maintain diversity in an ecosystem. ...
... - predation plays an important role in shaping communities. - help to control the size of prey populations. - maintain diversity in an ecosystem. ...
Species introduction a major topic in vegetation
... grazing. All these studies come from the Baltic state Estonia where, as in many other regions of Eastern Europe, large-scale abandonment of peripheral agricultural land had started in Soviet times and was further accelerated after the transition to a market economy. Since the country joined the EU, ...
... grazing. All these studies come from the Baltic state Estonia where, as in many other regions of Eastern Europe, large-scale abandonment of peripheral agricultural land had started in Soviet times and was further accelerated after the transition to a market economy. Since the country joined the EU, ...
The role of herbivores in mediating responses of tundra ecosystems
... Arctic tundra ecosystems are currently encountering more rapid warming than lower latitudes (ACIA, 2005; Serreze & Barry, 2011). In general, diversity within and among plant communities is a prerequisite for maintenance of ecosystem functioning (Isbell et al., 2011). Tundra ecosystems are relatively ...
... Arctic tundra ecosystems are currently encountering more rapid warming than lower latitudes (ACIA, 2005; Serreze & Barry, 2011). In general, diversity within and among plant communities is a prerequisite for maintenance of ecosystem functioning (Isbell et al., 2011). Tundra ecosystems are relatively ...
perennial pepperweed Lepidium latifolium L.
... effective herbicides cannot be applied near or over water. No biological control agents have been introduced to control perennial pepperweed because there are several important cultivated crops in the same family (canola, mustard, cabbage, and kale) as well as several threatened and endangered, nati ...
... effective herbicides cannot be applied near or over water. No biological control agents have been introduced to control perennial pepperweed because there are several important cultivated crops in the same family (canola, mustard, cabbage, and kale) as well as several threatened and endangered, nati ...
Ecosystem Approach to Marine Fisheries Management
... predictions regarding ecosystems near carrying capacity (Christensen and Pauly, 1998). Conversely, this theory can now be used to predict the effect of fisheries on ecosystems, which tend to reduce their maturity, as illustrated by the comparison of Ecopath models for the Eastern Bering Sea in the 1 ...
... predictions regarding ecosystems near carrying capacity (Christensen and Pauly, 1998). Conversely, this theory can now be used to predict the effect of fisheries on ecosystems, which tend to reduce their maturity, as illustrated by the comparison of Ecopath models for the Eastern Bering Sea in the 1 ...
Conservation biology
... conservation help sustain biodiversity • Conservation biology has attempted to sustain the biodiversity of entire communities, ecosystems, and landscapes • Ecosystem management is part of landscape ecology, which seeks to make biodiversity conservation part of land-use planning ...
... conservation help sustain biodiversity • Conservation biology has attempted to sustain the biodiversity of entire communities, ecosystems, and landscapes • Ecosystem management is part of landscape ecology, which seeks to make biodiversity conservation part of land-use planning ...
Habitat selection by nocturnal passerine migrants en route
... It has been suggested that stopover locations are selected by migrants during daylight hours, most likely early in the morning (Moore et al. 1995; Moore and Aborn 2000). It is assumed that ‘morning flights’ reported for many passerine nocturnal migrants, when they fly low above the vegetation in the m ...
... It has been suggested that stopover locations are selected by migrants during daylight hours, most likely early in the morning (Moore et al. 1995; Moore and Aborn 2000). It is assumed that ‘morning flights’ reported for many passerine nocturnal migrants, when they fly low above the vegetation in the m ...
Dear Colleague
... 103. What observable variables can be used to assess the distance of a population from a “tipping-point” beyond which it is in jeopardy of extinction? 104. Can we accurately predict the “extinction debt” from the loss and fragmentation of natural habitats, and can we find ways to forestall paying it ...
... 103. What observable variables can be used to assess the distance of a population from a “tipping-point” beyond which it is in jeopardy of extinction? 104. Can we accurately predict the “extinction debt” from the loss and fragmentation of natural habitats, and can we find ways to forestall paying it ...
RIVER CONSERVATION: CHALLENGES AND OPPORTUNITIES
... enjoy catching and eating fish, whether they are native or nonnative. Unfortunately, invasions in freshwater ecosystems can cause extensive problems for regional economies, human health, and the integrity of ecosystems. Many of the largest losses are caused by invertebrates that live in freshwaters ...
... enjoy catching and eating fish, whether they are native or nonnative. Unfortunately, invasions in freshwater ecosystems can cause extensive problems for regional economies, human health, and the integrity of ecosystems. Many of the largest losses are caused by invertebrates that live in freshwaters ...
Tipton Kangaroo Rat - Bakersfield Habitat Conservation Plan
... animals per hectare (January; rainy season) and 5.5 animals per hectare (May; dry season). Other studies at Lemoore calculated densities of 1.5 ± 0.5 animals per hectare overall and 13.5 ± 4.4 animals per hectare in focus areas. A study at the Highway 41 and Jackson Avenue site near Naval Air Statio ...
... animals per hectare (January; rainy season) and 5.5 animals per hectare (May; dry season). Other studies at Lemoore calculated densities of 1.5 ± 0.5 animals per hectare overall and 13.5 ± 4.4 animals per hectare in focus areas. A study at the Highway 41 and Jackson Avenue site near Naval Air Statio ...
Tabbimoble Swamp Nature Reserve
... Tabbimoble Swamp Nature Reserve is situated south of Woodburn on the NSW North Coast. It covers 1074 hectares and was established in 1999. The reserve is part of an important corridor of lowland coastal vegetation, protecting swamp sclerophyll forest and freshwater wetland endangered ecological comm ...
... Tabbimoble Swamp Nature Reserve is situated south of Woodburn on the NSW North Coast. It covers 1074 hectares and was established in 1999. The reserve is part of an important corridor of lowland coastal vegetation, protecting swamp sclerophyll forest and freshwater wetland endangered ecological comm ...
Beyond Yield: Plant Disease in the Context of
... and chlorothalonil were all found to alter one or more parameters of nutrient cycling but the effects were fungicide specific and shifted when soils were amended with organic matter (18). It also appears that the effects of particular compounds may be synergistic (26). There is little doubt that fun ...
... and chlorothalonil were all found to alter one or more parameters of nutrient cycling but the effects were fungicide specific and shifted when soils were amended with organic matter (18). It also appears that the effects of particular compounds may be synergistic (26). There is little doubt that fun ...
Multiple prey traits, multiple predators: keys to understanding
... traits. Selection differentials are the univariate equivalents of selection gradients (Lande and Arnold, 1983) and describe the total intensity of selection acting on a trait (direct and indirect selection). When fitness is survivorship, a selection differential is simply the difference in a standar ...
... traits. Selection differentials are the univariate equivalents of selection gradients (Lande and Arnold, 1983) and describe the total intensity of selection acting on a trait (direct and indirect selection). When fitness is survivorship, a selection differential is simply the difference in a standar ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.